[OE-core] [thud][PATCH v2] gcc: CVE fix for gcc <CVE-2019-15847>
akuster808
akuster808 at gmail.com
Tue Sep 17 20:52:32 UTC 2019
On 9/16/19 10:31 PM, Mikko.Rapeli at bmw.de wrote:
> On Mon, Sep 16, 2019 at 08:37:28PM +0000, Muminul Islam wrote:
>> Signed-off-by: Muminul Islam <muislam at microsoft.com>
>> ---
>> meta/recipes-devtools/gcc/gcc-8.2.inc | 2 +
>> .../gcc/gcc/0042-CVE-2019-15847_1.patch | 570 ++++++++++++++++
>> .../gcc/gcc/0043-CVE-2019-15847_2.patch | 640 ++++++++++++++++++
>> 3 files changed, 1212 insertions(+)
>> create mode 100644 meta/recipes-devtools/gcc/gcc/0042-CVE-2019-15847_1.patch
>> create mode 100644 meta/recipes-devtools/gcc/gcc/0043-CVE-2019-15847_2.patch
>>
>> diff --git a/meta/recipes-devtools/gcc/gcc-8.2.inc b/meta/recipes-devtools/gcc/gcc-8.2.inc
>> index 866a77558b..cab494989e 100644
>> --- a/meta/recipes-devtools/gcc/gcc-8.2.inc
>> +++ b/meta/recipes-devtools/gcc/gcc-8.2.inc
>> @@ -70,6 +70,8 @@ SRC_URI = "\
>> file://0039-Fix-for-testsuite-failure.patch \
>> file://0040-Re-introduce-spe-commandline-options.patch \
>> file://0041-ARC-fix-spec-gen.patch \
>> + file://0042-CVE-2019-15847_1.patch \
>> + file://0043-CVE-2019-15847_2.patch \
>> ${BACKPORTS} \
>> "
>> BACKPORTS = "\
>> diff --git a/meta/recipes-devtools/gcc/gcc/0042-CVE-2019-15847_1.patch b/meta/recipes-devtools/gcc/gcc/0042-CVE-2019-15847_1.patch
>> new file mode 100644
>> index 0000000000..edebf2fb41
>> --- /dev/null
>> +++ b/meta/recipes-devtools/gcc/gcc/0042-CVE-2019-15847_1.patch
>> @@ -0,0 +1,570 @@
>> +From 3efdb8c4afcbc5e07d33b05ab8c2bf88f42f4890 Mon Sep 17 00:00:00 2001
>> +From: segher <segher at 138bc75d-0d04-0410-961f-82ee72b054a4>
>> +Date: Thu, 22 Aug 2019 19:36:21 +0000
>> +Subject: [PATCH] rs6000: Use unspec_volatile for darn (PR91481)
>> +Reply-To: muislam at microsoft.com
>> +
>> +Every call to darn should deliver a *new* random number; such calls
>> +should not be CSEd together. So they should be unspec_volatile, not
>> +plain unspec.
>> +
>> + PR target/91481
>> + * config/rs6000/rs6000.md (unspec): Delete UNSPEC_DARN, UNSPEC_DARN_32,
>> + and UNSPEC_DARN_RAW.
>> + (unspecv): New enumerator values UNSPECV_DARN, UNSPECV_DARN_32, and
>> + UNSPECV_DARN_RAW.
>> + (darn_32): Use an unspec_volatile, and UNSPECV_DARN_32.
>> + (darn_raw): Use an unspec_volatile, and UNSPECV_DARN_RAW.
>> + (darn): Use an unspec_volatile, and UNSPECV_DARN.
>> +
>> +git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@274835 138bc75d-0d04-0410-961f-82ee72b054a4
>> +Signed-off-by: Muminul Islam <muislam at microsoft.com>
>> +
>> +CVE: CVE-2019-15847
>> +Upstream-Status: Backport
>> +---
>> + gcc/ChangeLog | 336 +++++++++++++++++++++++++++++++++++-
>> + gcc/config/rs6000/rs6000.md | 169 +++++++++++++++++-
>> + 2 files changed, 503 insertions(+), 2 deletions(-)
>> +
>> +diff --git a/gcc/ChangeLog b/gcc/ChangeLog
>> +index b93dae5dfb0..dc22d7e43b7 100644
>> +--- a/gcc/ChangeLog
>> ++++ b/gcc/ChangeLog
> This changelog is not correct for only fixing PR 91481.
>
> Because every upstream commit basically adds to the changelog and makes
> all cherry-picks and backports fail, I would be fine in omitting
> any changes to it in patches like this.
I agree, We have done this with other toolchain backports.
- armin
>
> -Mikko
>
>> +@@ -1,4 +1,338 @@
>> +-2018-07-26 Release Manager
>> ++2019-08-22 Segher Boessenkool <segher at kernel.crashing.org>
>> ++
>> ++ PR target/91481
>> ++ * config/rs6000/rs6000.md (unspec): Delete UNSPEC_DARN, UNSPEC_DARN_32,
>> ++ and UNSPEC_DARN_RAW.
>> ++ (unspecv): New enumerator values UNSPECV_DARN, UNSPECV_DARN_32, and
>> ++ UNSPECV_DARN_RAW.
>> ++ (darn_32): Use an unspec_volatile, and UNSPECV_DARN_32.
>> ++ (darn_raw): Use an unspec_volatile, and UNSPECV_DARN_RAW.
>> ++ (darn): Use an unspec_volatile, and UNSPECV_DARN.
>> ++
>> ++2019-08-22 Segher Boessenkool <segher at kernel.crashing.org>
>> ++
>> ++ * config/rs6000/altivec.md (unspec): Delete UNSPEC_DARN, UNSPEC_DARN_32,
>> ++ UNSPEC_DARN_RAW, UNSPEC_CMPRB, UNSPEC_CMPRB2, UNSPEC_CMPEQB; move to...
>> ++ * config/rs6000/rs6000.md (unspec): ... here.
>> ++ * config/rs6000/altivec.md (darn_32, darn_raw, darn, cmprb,
>> ++ *cmprb_internal, setb_signed, setb_unsigned, cmprb2, *cmprb2_internal,
>> ++ cmpeqb, *cmpeqb_internal): Delete, move to...
>> ++ * config/rs6000/rs6000.md (darn_32, darn_raw, darn, cmprb,
>> ++ *cmprb_internal, setb_signed, setb_unsigned, cmprb2, *cmprb2_internal,
>> ++ cmpeqb, *cmpeqb_internal): ... here.
>> ++
>> ++2019-08-22 Kyrylo Tkachov <kyrylo.tkachov at arm.com>
>> ++
>> ++ * config/arm/arm_acle.h: Use arch=armv8-a+crc+simd pragma for CRC32
>> ++ intrinsics if __ARM_FP.
>> ++ Use __ARM_FEATURE_CRC32 ifdef guard.
>> ++
>> ++2019-08-22 Wilco Dijkstra <wdijkstr at arm.com>
>> ++
>> ++ * config/arm/arm.md (neon_for_64bits): Remove.
>> ++ (avoid_neon_for_64bits): Remove.
>> ++ (arm_adddi3): Always split early.
>> ++ (arm_subdi3): Always split early.
>> ++ (negdi2): Remove Neon expansion.
>> ++ (split zero_extend): Split before reload.
>> ++ (split sign_extend): Split before reload.
>> ++
>> ++2019-08-22 Wilco Dijkstra <wdijkstr at arm.com>
>> ++
>> ++ * config/arm/iterators.md (qhs_extenddi_cstr): Update.
>> ++ (qhs_extenddi_cstr): Likewise.
>> ++ * config/arm/arm.md (ashldi3): Always expand early.
>> ++ (ashlsi3): Likewise.
>> ++ (ashrsi3): Likewise.
>> ++ (zero_extend<mode>di2): Remove Neon variants.
>> ++ (extend<mode>di2): Likewise.
>> ++ * config/arm/neon.md (ashldi3_neon_noclobber): Remove.
>> ++ (signed_shift_di3_neon): Likewise.
>> ++ (unsigned_shift_di3_neon): Likewise.
>> ++ (ashrdi3_neon_imm_noclobber): Likewise.
>> ++ (lshrdi3_neon_imm_noclobber): Likewise.
>> ++ (<shift>di3_neon): Likewise.
>> ++ (split extend): Remove DI extend split patterns.
>> ++
>> ++2019-08-22 Wilco Dijkstra <wdijkstr at arm.com>
>> ++
>> ++ * config/arm/arm.md (split and/eor/ior): Remove Neon check.
>> ++ (split not): Add DImode not splitter.
>> ++ (anddi3): Remove pattern.
>> ++ (anddi3_insn): Likewise.
>> ++ (anddi_zesidi_di): Likewise.
>> ++ (anddi_sesdi_di): Likewise.
>> ++ (anddi_notdi_di): Likewise.
>> ++ (anddi_notzesidi_di): Likewise.
>> ++ (anddi_notsesidi_di): Likewise.
>> ++ (iordi3): Likewise.
>> ++ (iordi3_insn): Likewise.
>> ++ (iordi_zesidi_di): Likewise.
>> ++ (iordi_sesidi_di): Likewise.
>> ++ (xordi3): Likewise.
>> ++ (xordi3_insn): Likewise.
>> ++ (xordi_sesidi_di): Likewise.
>> ++ (xordi_zesidi_di): Likewise.
>> ++ (one_cmpldi2): Likewise.
>> ++ (one_cmpldi2_insn): Likewise.
>> ++ * config/arm/constraints.md: Remove De, Df, Dg constraints.
>> ++ * config/arm/iwmmxt.md (iwmmxt_iordi3): Remove general register
>> ++ alternative.
>> ++ (iwmmxt_xordi3): Likewise.
>> ++ (iwmmxt_anddi3): Likewise.
>> ++ * config/arm/neon.md (orndi3_neon): Remove pattern.
>> ++ (anddi_notdi_di): Likewise.
>> ++ * config/arm/predicates.md (arm_anddi_operand_neon): Remove.
>> ++ (arm_iordi_operand_neon): Likewise.
>> ++ (arm_xordi_operand_neon): Likewise.
>> ++ * config/arm/thumb2.md(iordi_notdi_di): Remove pattern.
>> ++ (iordi_notzesidi_di): Likewise.
>> ++ (iordi_notdi_zesidi): Likewise.
>> ++ (iordi_notsesidi_di): Likewise.
>> ++
>> ++2019-08-22 Richard Earnshaw <rearnsha at arm.com>
>> ++
>> ++ * config/arm/arm.md (iorsi3_compare0): Add alternative for 16-bit thumb
>> ++ insn.
>> ++ (iorsi3_compare0_scratch): Likewise.
>> ++
>> ++2019-08-22 Sylvia Taylor <sylvia.taylor at arm.com>
>> ++
>> ++ * config/aarch64/aarch64-simd-builtins.def:
>> ++ (ld1x4): New.
>> ++ (st1x4): Likewise.
>> ++ * config/aarch64/aarch64-simd.md:
>> ++ (aarch64_ld1x4<VALLDIF:mode>): New pattern.
>> ++ (aarch64_st1x4<VALLDIF:mode>): Likewise.
>> ++ (aarch64_ld1_x4_<mode>): Likewise.
>> ++ (aarch64_st1_x4_<mode>): Likewise.
>> ++ * config/aarch64/arm_neon.h:
>> ++ (vld1_s8_x4): New function.
>> ++ (vld1q_s8_x4): Likewise.
>> ++ (vld1_s16_x4): Likewise.
>> ++ (vld1q_s16_x4): Likewise.
>> ++ (vld1_s32_x4): Likewise.
>> ++ (vld1q_s32_x4): Likewise.
>> ++ (vld1_u8_x4): Likewise.
>> ++ (vld1q_u8_x4): Likewise.
>> ++ (vld1_u16_x4): Likewise.
>> ++ (vld1q_u16_x4): Likewise.
>> ++ (vld1_u32_x4): Likewise.
>> ++ (vld1q_u32_x4): Likewise.
>> ++ (vld1_f16_x4): Likewise.
>> ++ (vld1q_f16_x4): Likewise.
>> ++ (vld1_f32_x4): Likewise.
>> ++ (vld1q_f32_x4): Likewise.
>> ++ (vld1_p8_x4): Likewise.
>> ++ (vld1q_p8_x4): Likewise.
>> ++ (vld1_p16_x4): Likewise.
>> ++ (vld1q_p16_x4): Likewise.
>> ++ (vld1_s64_x4): Likewise.
>> ++ (vld1_u64_x4): Likewise.
>> ++ (vld1_p64_x4): Likewise.
>> ++ (vld1q_s64_x4): Likewise.
>> ++ (vld1q_u64_x4): Likewise.
>> ++ (vld1q_p64_x4): Likewise.
>> ++ (vld1_f64_x4): Likewise.
>> ++ (vld1q_f64_x4): Likewise.
>> ++ (vst1_s8_x4): Likewise.
>> ++ (vst1q_s8_x4): Likewise.
>> ++ (vst1_s16_x4): Likewise.
>> ++ (vst1q_s16_x4): Likewise.
>> ++ (vst1_s32_x4): Likewise.
>> ++ (vst1q_s32_x4): Likewise.
>> ++ (vst1_u8_x4): Likewise.
>> ++ (vst1q_u8_x4): Likewise.
>> ++ (vst1_u16_x4): Likewise.
>> ++ (vst1q_u16_x4): Likewise.
>> ++ (vst1_u32_x4): Likewise.
>> ++ (vst1q_u32_x4): Likewise.
>> ++ (vst1_f16_x4): Likewise.
>> ++ (vst1q_f16_x4): Likewise.
>> ++ (vst1_f32_x4): Likewise.
>> ++ (vst1q_f32_x4): Likewise.
>> ++ (vst1_p8_x4): Likewise.
>> ++ (vst1q_p8_x4): Likewise.
>> ++ (vst1_p16_x4): Likewise.
>> ++ (vst1q_p16_x4): Likewise.
>> ++ (vst1_s64_x4): Likewise.
>> ++ (vst1_u64_x4): Likewise.
>> ++ (vst1_p64_x4): Likewise.
>> ++ (vst1q_s64_x4): Likewise.
>> ++ (vst1q_u64_x4): Likewise.
>> ++ (vst1q_p64_x4): Likewise.
>> ++ (vst1_f64_x4): Likewise.
>> ++ (vst1q_f64_x4): Likewise.
>> ++
>> ++2019-08-22 Prathamesh Kulkarni <prathamesh.kulkarni at linaro.org>
>> ++
>> ++ * config/aarch64/aarch64-sve.md (vcond_mask): Add "@".
>> ++
>> ++2019-08-22 Prathamesh Kulkarni <prathamesh.kulkarni at linaro.org>
>> ++ Richard Sandiford <richard.sandiford at arm.com>
>> ++
>> ++ PR target/88839
>> ++ * config/aarch64/aarch64.c (aarch64_evpc_sel): New function.
>> ++ (aarch64_expand_vec_perm_const_1): Call aarch64_evpc_sel.
>> ++
>> ++2019-08-21 Prathamesh Kulkarni <prathamesh.kulkarni at linaro.org>
>> ++
>> ++ PR target/90724
>> ++ * config/aarch64/aarch64.c (aarch64_gen_compare_reg_maybe_ze): Force y
>> ++ in reg if it fails aarch64_plus_operand predicate.
>> ++
>> ++2019-08-21 Richard Biener <rguenther at suse.de>
>> ++
>> ++ PR tree-optimization/91482
>> ++ * tree-ssa-ccp.c (ccp_folder::fold_stmt): Remove useless
>> ++ BUILT_IN_ASSUME_ALIGNED calls.
>> ++
>> ++2019-08-21 Richard Biener <rguenther at suse.de>
>> ++
>> ++ PR target/91498
>> ++ PR target/91503
>> ++ * config/i386/i386-features.c
>> ++ (general_scalar_chain::make_vector_copies): Copy stack temporary
>> ++ rtx when using it multiple times.
>> ++ (general_scalar_chain::convert_reg): Likewise.
>> ++
>> ++2019-08-20 Bernd Edlinger <bernd.edlinger at hotmail.de>
>> ++
>> ++ * function.c (assign_parm_find_stack_rtl): Use known_eq instead of ==.
>> ++
>> ++2019-08-20 Matthew Beliveau <mbelivea at redhat.com>
>> ++
>> ++ * tree-ssa-dse.c (dse_optimize_redundant_stores): Improved check to
>> ++ catch more redundant zero initialization cases.
>> ++ (dse_dom_walker::dse_optimize_stmt): Likewise.
>> ++
>> ++2019-08-20 Richard Biener <rguenther at suse.de>
>> ++
>> ++ PR lto/91307
>> ++ * ipa.c (cgraph_build_static_cdtor_1): Use names not recognizable
>> ++ by collect2 when targetm.have_ctors_dtors which avoids dragging
>> ++ in temporary filenames from LTO input objects.
>> ++
>> ++2019-08-20 Richard Biener <rguenther at suse.de>
>> ++
>> ++ PR tree-optimization/37242
>> ++ * tree-ssa-sccvn.c (visit_nary_op): Also CSE (T)(a + b)
>> ++ to (T)a + (T)b if we know that a + b does not overflow.
>> ++
>> ++2019-08-20 Eric Botcazou <ebotcazou at adacore.com>
>> ++
>> ++ PR rtl-optimization/91347
>> ++ * dse.c (scan_insn): Call add_wild_read for non-const/memset tail calls
>> ++ before reload if HARD_FRAME_POINTER_IS_ARG_POINTER.
>> ++
>> ++2019-08-20 Richard Sandiford <richard.sandiford at arm.com>
>> ++
>> ++ * calls.h (function_arg_info): Add a pass_by_reference field,
>> ++ defaulting to false.
>> ++ * calls.c (apply_pass_by_reference_rules): Set pass_by_reference
>> ++ when applying pass-by-reference semantics.
>> ++ (initialize_argument_information): Likewise.
>> ++ (emit_library_call_value_1): Likewise.
>> ++ * function.c (assign_parm_data_one): Remove passed_pointer field.
>> ++ (assign_parm_find_data_types): Don't set it.
>> ++ (assign_parm_find_stack_rtl, assign_parm_adjust_stack_rtl)
>> ++ (assign_parm_setup_reg, assign_parms, gimplify_parameters): Use
>> ++ arg.pass_by_reference instead of passed_pointer.
>> ++
>> ++2019-08-20 Richard Sandiford <richard.sandiford at arm.com>
>> ++
>> ++ * calls.c (emit_library_call_value_1): Merge arg and orig_arg
>> ++ into a single function_arg_info, updating its fields when we
>> ++ apply pass-by-reference and promotion semantics. Use the
>> ++ function_arg_info to track the mode rather than keeping it in
>> ++ a separate local variable.
>> ++ (initialize_argument_information): Likewise. Base the final
>> ++ arg_to_skip on this new function_arg_info rather than creating
>> ++ a new one from scratch.
>> ++
>> ++2019-08-20 Richard Sandiford <richard.sandiford at arm.com>
>> ++
>> ++ * function.c (assign_parm_data_one): Replace passed_type,
>> ++ promoted_mode and named_arg with a function_arg_info field.
>> ++ (assign_parm_find_data_types): Remove local variables and
>> ++ assign directly to "data". Make data->passed_mode shadow
>> ++ data->arg.mode until promotion, then assign the promoted
>> ++ mode to data->arg.mode.
>> ++ (assign_parms_setup_varargs, assign_parm_find_entry_rtl)
>> ++ (assign_parm_find_stack_rtl, assign_parm_adjust_entry_rtl)
>> ++ (assign_parm_remove_parallels, assign_parm_setup_block_p)
>> ++ (assign_parm_setup_block, assign_parm_setup_reg)
>> ++ (assign_parm_setup_stack, assign_parms, gimplify_parameters): Use
>> ++ arg.mode instead of promoted_mode, arg.type instead of passed_type
>> ++ and arg.named instead of named_arg. Use data->arg for
>> ++ function_arg_info structures that had the field values passed_type,
>> ++ promoted_mode and named_arg. Base other function_arg_infos on
>> ++ data->arg, changing the necessary properties.
>> ++
>> ++2019-08-20 Richard Sandiford <richard.sandiford at arm.com>
>> ++
>> ++ * calls.h (apply_pass_by_reference_rules): Declare.
>> ++ * calls.c (apply_pass_by_reference_rules): New function.
>> ++ * config/c6x/c6x.c (c6x_call_saved_register_used): Use it.
>> ++ * config/rs6000/rs6000-call.c (rs6000_parm_needs_stack): Likewise.
>> ++ * config/s390/s390.c (s390_call_saved_register_used): Likewise.
>> ++ * function.c (assign_parm_find_data_types): Likewise.
>> ++ * var-tracking.c (prepare_call_arguments): Likewise.
>> ++
>> ++2019-08-20 Richard Sandiford <richard.sandiford at arm.com>
>> ++
>> ++ * target.def (must_pass_in_stack): Take a function_arg_info instead
>> ++ of a mode and a type.
>> ++ * doc/tm.texi: Regenerate.
>> ++ * calls.h (must_pass_in_stack_var_size): Take a function_arg_info
>> ++ instead of a mode and a type.
>> ++ (must_pass_in_stack_var_size_or_pad): Likewise.
>> ++ * calls.c (must_pass_in_stack_var_size): Likewise.
>> ++ (must_pass_in_stack_var_size_or_pad): Likewise.
>> ++ (initialize_argument_information): Update call to
>> ++ targetm.calls.must_pass_in_stack.
>> ++ (must_pass_va_arg_on_stack): Likewise.
>> ++ * function.c (assign_parm_find_entry_rtl): Likewise.
>> ++ * targhooks.c (hook_pass_by_reference_must_pass_in_stack): Likewise.
>> ++ * config/alpha/alpha.c (alpha_function_arg): Likewise.
>> ++ (alpha_function_arg_advance): Likewise.
>> ++ * config/cr16/cr16.c (cr16_function_arg): Likewise.
>> ++ (cr16_function_arg_advance): Likewise.
>> ++ * config/cris/cris.c (cris_pass_by_reference): Likewise.
>> ++ (cris_arg_partial_bytes): Likewise.
>> ++ * config/iq2000/iq2000.c (iq2000_pass_by_reference): Likewise.
>> ++ * config/lm32/lm32.c (lm32_function_arg): Likewise.
>> ++ * config/mcore/mcore.c (mcore_num_arg_regs): Likewise.
>> ++ (mcore_function_arg, mcore_arg_partial_bytes): Likewise.
>> ++ * config/mips/mips.c (mips_pass_by_reference): Likewise.
>> ++ * config/mmix/mmix.c (mmix_function_arg_advance): Likewise.
>> ++ (mmix_function_arg_1, mmix_pass_by_reference): Likewise.
>> ++ * config/sh/sh.c (sh_pass_by_reference): Likewise.
>> ++ * config/stormy16/stormy16.c (xstormy16_function_arg): Likewise.
>> ++ * config/xtensa/xtensa.c (xtensa_function_arg_advance): Likewise.
>> ++ * config/arm/arm.c (arm_must_pass_in_stack): Take a function_arg_info
>> ++ instead of a mode and a type.
>> ++ * config/fr30/fr30.c (fr30_must_pass_in_stack): Likewise.
>> ++ (fr30_num_arg_regs): Likewise.
>> ++ (fr30_setup_incoming_varargs): Update calls accordingly.
>> ++ (fr30_arg_partial_bytes, fr30_function_arg): Likewise.
>> ++ (fr30_function_arg_advance): Likewise.
>> ++ * config/frv/frv.c (frv_must_pass_in_stack): Take a function_arg_info
>> ++ instead of a mode and a type.
>> ++ * config/gcn/gcn.c (num_arg_regs): Likewise.
>> ++ (gcn_function_arg, gcn_function_arg_advance): Update calls to
>> ++ num_arg_regs and targetm.calls.must_pass_in_stack.
>> ++ (gcn_arg_partial_bytes): Likewise.
>> ++ * config/i386/i386.c (ix86_must_pass_in_stack): Take a
>> ++ function_arg_info instead of a mode and a type.
>> ++ (classify_argument): Update call accordingly.
>> ++ * config/nds32/nds32.c (nds32_must_pass_in_stack): Take a
>> ++ function_arg_info instead of a mode and a type.
>> ++ * config/rs6000/rs6000-internal.h (rs6000_must_pass_in_stack):
>> ++ Likewise.
>> ++ * config/rs6000/rs6000-call.c (rs6000_must_pass_in_stack): Likewise.
>> ++ (rs6000_parm_needs_stack): Update call accordingly.
>> ++ (setup_incoming_varargs): Likewise.
>> +
>> + * GCC 8.2.0 released.
>> +
>> +diff --git a/gcc/config/rs6000/rs6000.md b/gcc/config/rs6000/rs6000.md
>> +index 60058814b8a..d706c6ecd1a 100644
>> +--- a/gcc/config/rs6000/rs6000.md
>> ++++ b/gcc/config/rs6000/rs6000.md
>> +@@ -138,6 +138,9 @@
>> + UNSPEC_STACK_CHECK
>> + UNSPEC_FUSION_P9
>> + UNSPEC_FUSION_ADDIS
>> ++ UNSPEC_CMPRB
>> ++ UNSPEC_CMPRB2
>> ++ UNSPEC_CMPEQB
>> + UNSPEC_ADD_ROUND_TO_ODD
>> + UNSPEC_SUB_ROUND_TO_ODD
>> + UNSPEC_MUL_ROUND_TO_ODD
>> +@@ -162,6 +165,9 @@
>> + UNSPECV_EH_RR ; eh_reg_restore
>> + UNSPECV_ISYNC ; isync instruction
>> + UNSPECV_MFTB ; move from time base
>> ++ UNSPECV_DARN ; darn 1 (deliver a random number)
>> ++ UNSPECV_DARN_32 ; darn 2
>> ++ UNSPECV_DARN_RAW ; darn 0
>> + UNSPECV_NLGR ; non-local goto receiver
>> + UNSPECV_MFFS ; Move from FPSCR
>> + UNSPECV_MTFSF ; Move to FPSCR Fields
>> +@@ -14603,7 +14609,168 @@
>> + [(set_attr "type" "veccmp")
>> + (set_attr "size" "128")])
>> +
>> +-
>> ++;; Miscellaneous ISA 3.0 (power9) instructions
>> ++(define_insn "darn_32"
>> ++ [(set (match_operand:SI 0 "register_operand" "=r")
>> ++ (unspec_volatile:SI [(const_int 0)] UNSPECV_DARN_32))]
>> ++ "TARGET_P9_MISC"
>> ++ "darn %0,0"
>> ++ [(set_attr "type" "integer")])
>> ++
>> ++(define_insn "darn_raw"
>> ++ [(set (match_operand:DI 0 "register_operand" "=r")
>> ++ (unspec_volatile:DI [(const_int 0)] UNSPECV_DARN_RAW))]
>> ++ "TARGET_P9_MISC && TARGET_64BIT"
>> ++ "darn %0,2"
>> ++ [(set_attr "type" "integer")])
>> ++
>> ++(define_insn "darn"
>> ++ [(set (match_operand:DI 0 "register_operand" "=r")
>> ++ (unspec_volatile:DI [(const_int 0)] UNSPECV_DARN))]
>> ++ "TARGET_P9_MISC && TARGET_64BIT"
>> ++ "darn %0,1"
>> ++ [(set_attr "type" "integer")])
>> ++
>> ++;; Test byte within range.
>> ++;;
>> ++;; The bytes of operand 1 are organized as xx:xx:xx:vv, where xx
>> ++;; represents a byte whose value is ignored in this context and
>> ++;; vv, the least significant byte, holds the byte value that is to
>> ++;; be tested for membership within the range specified by operand 2.
>> ++;; The bytes of operand 2 are organized as xx:xx:hi:lo.
>> ++;;
>> ++;; Return in target register operand 0 a value of 1 if lo <= vv and
>> ++;; vv <= hi. Otherwise, set register operand 0 to 0.
>> ++;;
>> ++;; Though the instructions to which this expansion maps operate on
>> ++;; 64-bit registers, the current implementation only operates on
>> ++;; SI-mode operands as the high-order bits provide no information
>> ++;; that is not already available in the low-order bits. To avoid the
>> ++;; costs of data widening operations, future enhancements might allow
>> ++;; DI mode for operand 0 and/or might allow operand 1 to be QI mode.
>> ++(define_expand "cmprb"
>> ++ [(set (match_dup 3)
>> ++ (unspec:CC [(match_operand:SI 1 "gpc_reg_operand" "r")
>> ++ (match_operand:SI 2 "gpc_reg_operand" "r")]
>> ++ UNSPEC_CMPRB))
>> ++ (set (match_operand:SI 0 "gpc_reg_operand" "=r")
>> ++ (if_then_else:SI (lt (match_dup 3)
>> ++ (const_int 0))
>> ++ (const_int -1)
>> ++ (if_then_else (gt (match_dup 3)
>> ++ (const_int 0))
>> ++ (const_int 1)
>> ++ (const_int 0))))]
>> ++ "TARGET_P9_MISC"
>> ++{
>> ++ operands[3] = gen_reg_rtx (CCmode);
>> ++})
>> ++
>> ++;; The bytes of operand 1 are organized as xx:xx:xx:vv, where xx
>> ++;; represents a byte whose value is ignored in this context and
>> ++;; vv, the least significant byte, holds the byte value that is to
>> ++;; be tested for membership within the range specified by operand 2.
>> ++;; The bytes of operand 2 are organized as xx:xx:hi:lo.
>> ++;;
>> ++;; Set bit 1 (the GT bit, 0x4) of CR register operand 0 to 1 if
>> ++;; lo <= vv and vv <= hi. Otherwise, set the GT bit to 0. The other
>> ++;; 3 bits of the target CR register are all set to 0.
>> ++(define_insn "*cmprb_internal"
>> ++ [(set (match_operand:CC 0 "cc_reg_operand" "=y")
>> ++ (unspec:CC [(match_operand:SI 1 "gpc_reg_operand" "r")
>> ++ (match_operand:SI 2 "gpc_reg_operand" "r")]
>> ++ UNSPEC_CMPRB))]
>> ++ "TARGET_P9_MISC"
>> ++ "cmprb %0,0,%1,%2"
>> ++ [(set_attr "type" "logical")])
>> ++
>> ++;; Set operand 0 register to -1 if the LT bit (0x8) of condition
>> ++;; register operand 1 is on. Otherwise, set operand 0 register to 1
>> ++;; if the GT bit (0x4) of condition register operand 1 is on.
>> ++;; Otherwise, set operand 0 to 0. Note that the result stored into
>> ++;; register operand 0 is non-zero iff either the LT or GT bits are on
>> ++;; within condition register operand 1.
>> ++(define_insn "setb_signed"
>> ++ [(set (match_operand:SI 0 "gpc_reg_operand" "=r")
>> ++ (if_then_else:SI (lt (match_operand:CC 1 "cc_reg_operand" "y")
>> ++ (const_int 0))
>> ++ (const_int -1)
>> ++ (if_then_else (gt (match_dup 1)
>> ++ (const_int 0))
>> ++ (const_int 1)
>> ++ (const_int 0))))]
>> ++ "TARGET_P9_MISC"
>> ++ "setb %0,%1"
>> ++ [(set_attr "type" "logical")])
>> ++
>> ++(define_insn "setb_unsigned"
>> ++ [(set (match_operand:SI 0 "gpc_reg_operand" "=r")
>> ++ (if_then_else:SI (ltu (match_operand:CCUNS 1 "cc_reg_operand" "y")
>> ++ (const_int 0))
>> ++ (const_int -1)
>> ++ (if_then_else (gtu (match_dup 1)
>> ++ (const_int 0))
>> ++ (const_int 1)
>> ++ (const_int 0))))]
>> ++ "TARGET_P9_MISC"
>> ++ "setb %0,%1"
>> ++ [(set_attr "type" "logical")])
>> ++
>> ++;; Test byte within two ranges.
>> ++;;
>> ++;; The bytes of operand 1 are organized as xx:xx:xx:vv, where xx
>> ++;; represents a byte whose value is ignored in this context and
>> ++;; vv, the least significant byte, holds the byte value that is to
>> ++;; be tested for membership within the range specified by operand 2.
>> ++;; The bytes of operand 2 are organized as hi_1:lo_1:hi_2:lo_2.
>> ++;;
>> ++;; Return in target register operand 0 a value of 1 if (lo_1 <= vv and
>> ++;; vv <= hi_1) or if (lo_2 <= vv and vv <= hi_2). Otherwise, set register
>> ++;; operand 0 to 0.
>> ++;;
>> ++;; Though the instructions to which this expansion maps operate on
>> ++;; 64-bit registers, the current implementation only operates on
>> ++;; SI-mode operands as the high-order bits provide no information
>> ++;; that is not already available in the low-order bits. To avoid the
>> ++;; costs of data widening operations, future enhancements might allow
>> ++;; DI mode for operand 0 and/or might allow operand 1 to be QI mode.
>> ++(define_expand "cmprb2"
>> ++ [(set (match_dup 3)
>> ++ (unspec:CC [(match_operand:SI 1 "gpc_reg_operand" "r")
>> ++ (match_operand:SI 2 "gpc_reg_operand" "r")]
>> ++ UNSPEC_CMPRB2))
>> ++ (set (match_operand:SI 0 "gpc_reg_operand" "=r")
>> ++ (if_then_else:SI (lt (match_dup 3)
>> ++ (const_int 0))
>> ++ (const_int -1)
>> ++ (if_then_else (gt (match_dup 3)
>> ++ (const_int 0))
>> ++ (const_int 1)
>> ++ (const_int 0))))]
>> ++ "TARGET_P9_MISC"
>> ++{
>> ++ operands[3] = gen_reg_rtx (CCmode);
>> ++})
>> ++
>> ++;; The bytes of operand 1 are organized as xx:xx:xx:vv, where xx
>> ++;; represents a byte whose value is ignored in this context and
>> ++;; vv, the least significant byte, holds the byte value that is to
>> ++;; be tested for membership within the ranges specified by operand 2.
>> ++;; The bytes of operand 2 are organized as hi_1:lo_1:hi_2:lo_2.
>> ++;;
>> ++;; Set bit 1 (the GT bit, 0x4) of CR register operand 0 to 1 if
>> ++;; (lo_1 <= vv and vv <= hi_1) or if (lo_2 <= vv and vv <= hi_2).
>> ++;; Otherwise, set the GT bit to 0. The other 3 bits of the target
>> ++;; CR register are all set to 0.
>> ++(define_insn "*cmprb2_internal"
>> ++ [(set (match_operand:CC 0 "cc_reg_operand" "=y")
>> ++ (unspec:CC [(match_operand:SI 1 "gpc_reg_operand" "r")
>> ++ (match_operand:SI 2 "gpc_reg_operand" "r")]
>> ++ UNSPEC_CMPRB2))]
>> ++ "TARGET_P9_MISC"
>> ++ "cmprb %0,1,%1,%2"
>> ++ [(set_attr "type" "logical")])
>> ++
>> +
>> + (include "sync.md")
>> + (include "vector.md")
>> +--
>> +2.23.0
>> +
>> diff --git a/meta/recipes-devtools/gcc/gcc/0043-CVE-2019-15847_2.patch b/meta/recipes-devtools/gcc/gcc/0043-CVE-2019-15847_2.patch
>> new file mode 100644
>> index 0000000000..8d1bc7a6fd
>> --- /dev/null
>> +++ b/meta/recipes-devtools/gcc/gcc/0043-CVE-2019-15847_2.patch
>> @@ -0,0 +1,640 @@
>> +From 3efdb8c4afcbc5e07d33b05ab8c2bf88f42f4890 Mon Sep 17 00:00:00 2001
>> +From: segher <segher at 138bc75d-0d04-0410-961f-82ee72b054a4>
>> +Date: Thu, 22 Aug 2019 19:36:21 +0000
>> +Subject: [PATCH 1/2] rs6000: Use unspec_volatile for darn (PR91481)
>> +Reply-To: muislam at microsoft.com
>> +
>> +Every call to darn should deliver a *new* random number; such calls
>> +should not be CSEd together. So they should be unspec_volatile, not
>> +plain unspec.
>> +
>> + PR target/91481
>> + * config/rs6000/rs6000.md (unspec): Delete UNSPEC_DARN, UNSPEC_DARN_32,
>> + and UNSPEC_DARN_RAW.
>> + (unspecv): New enumerator values UNSPECV_DARN, UNSPECV_DARN_32, and
>> + UNSPECV_DARN_RAW.
>> + (darn_32): Use an unspec_volatile, and UNSPECV_DARN_32.
>> + (darn_raw): Use an unspec_volatile, and UNSPECV_DARN_RAW.
>> + (darn): Use an unspec_volatile, and UNSPECV_DARN.
>> +
>> +git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@274835 138bc75d-0d04-0410-961f-82ee72b054a4
>> +Signed-off-by: Muminul Islam <muislam at microsoft.com>
>> +
>> +CVE: CVE-2019-15847
>> +Upstream-Status: Backport
>> +---
>> + gcc/ChangeLog | 336 +++++++++++++++++++++++++++++++++++-
>> + gcc/config/rs6000/rs6000.md | 169 +++++++++++++++++-
>> + 2 files changed, 503 insertions(+), 2 deletions(-)
>> +
>> +diff --git a/gcc/ChangeLog b/gcc/ChangeLog
>> +index b93dae5dfb0..dc22d7e43b7 100644
>> +--- a/gcc/ChangeLog
>> ++++ b/gcc/ChangeLog
>> +@@ -1,4 +1,338 @@
>> +-2018-07-26 Release Manager
>> ++2019-08-22 Segher Boessenkool <segher at kernel.crashing.org>
>> ++
>> ++ PR target/91481
>> ++ * config/rs6000/rs6000.md (unspec): Delete UNSPEC_DARN, UNSPEC_DARN_32,
>> ++ and UNSPEC_DARN_RAW.
>> ++ (unspecv): New enumerator values UNSPECV_DARN, UNSPECV_DARN_32, and
>> ++ UNSPECV_DARN_RAW.
>> ++ (darn_32): Use an unspec_volatile, and UNSPECV_DARN_32.
>> ++ (darn_raw): Use an unspec_volatile, and UNSPECV_DARN_RAW.
>> ++ (darn): Use an unspec_volatile, and UNSPECV_DARN.
>> ++
>> ++2019-08-22 Segher Boessenkool <segher at kernel.crashing.org>
>> ++
>> ++ * config/rs6000/altivec.md (unspec): Delete UNSPEC_DARN, UNSPEC_DARN_32,
>> ++ UNSPEC_DARN_RAW, UNSPEC_CMPRB, UNSPEC_CMPRB2, UNSPEC_CMPEQB; move to...
>> ++ * config/rs6000/rs6000.md (unspec): ... here.
>> ++ * config/rs6000/altivec.md (darn_32, darn_raw, darn, cmprb,
>> ++ *cmprb_internal, setb_signed, setb_unsigned, cmprb2, *cmprb2_internal,
>> ++ cmpeqb, *cmpeqb_internal): Delete, move to...
>> ++ * config/rs6000/rs6000.md (darn_32, darn_raw, darn, cmprb,
>> ++ *cmprb_internal, setb_signed, setb_unsigned, cmprb2, *cmprb2_internal,
>> ++ cmpeqb, *cmpeqb_internal): ... here.
>> ++
>> ++2019-08-22 Kyrylo Tkachov <kyrylo.tkachov at arm.com>
>> ++
>> ++ * config/arm/arm_acle.h: Use arch=armv8-a+crc+simd pragma for CRC32
>> ++ intrinsics if __ARM_FP.
>> ++ Use __ARM_FEATURE_CRC32 ifdef guard.
>> ++
>> ++2019-08-22 Wilco Dijkstra <wdijkstr at arm.com>
>> ++
>> ++ * config/arm/arm.md (neon_for_64bits): Remove.
>> ++ (avoid_neon_for_64bits): Remove.
>> ++ (arm_adddi3): Always split early.
>> ++ (arm_subdi3): Always split early.
>> ++ (negdi2): Remove Neon expansion.
>> ++ (split zero_extend): Split before reload.
>> ++ (split sign_extend): Split before reload.
>> ++
>> ++2019-08-22 Wilco Dijkstra <wdijkstr at arm.com>
>> ++
>> ++ * config/arm/iterators.md (qhs_extenddi_cstr): Update.
>> ++ (qhs_extenddi_cstr): Likewise.
>> ++ * config/arm/arm.md (ashldi3): Always expand early.
>> ++ (ashlsi3): Likewise.
>> ++ (ashrsi3): Likewise.
>> ++ (zero_extend<mode>di2): Remove Neon variants.
>> ++ (extend<mode>di2): Likewise.
>> ++ * config/arm/neon.md (ashldi3_neon_noclobber): Remove.
>> ++ (signed_shift_di3_neon): Likewise.
>> ++ (unsigned_shift_di3_neon): Likewise.
>> ++ (ashrdi3_neon_imm_noclobber): Likewise.
>> ++ (lshrdi3_neon_imm_noclobber): Likewise.
>> ++ (<shift>di3_neon): Likewise.
>> ++ (split extend): Remove DI extend split patterns.
>> ++
>> ++2019-08-22 Wilco Dijkstra <wdijkstr at arm.com>
>> ++
>> ++ * config/arm/arm.md (split and/eor/ior): Remove Neon check.
>> ++ (split not): Add DImode not splitter.
>> ++ (anddi3): Remove pattern.
>> ++ (anddi3_insn): Likewise.
>> ++ (anddi_zesidi_di): Likewise.
>> ++ (anddi_sesdi_di): Likewise.
>> ++ (anddi_notdi_di): Likewise.
>> ++ (anddi_notzesidi_di): Likewise.
>> ++ (anddi_notsesidi_di): Likewise.
>> ++ (iordi3): Likewise.
>> ++ (iordi3_insn): Likewise.
>> ++ (iordi_zesidi_di): Likewise.
>> ++ (iordi_sesidi_di): Likewise.
>> ++ (xordi3): Likewise.
>> ++ (xordi3_insn): Likewise.
>> ++ (xordi_sesidi_di): Likewise.
>> ++ (xordi_zesidi_di): Likewise.
>> ++ (one_cmpldi2): Likewise.
>> ++ (one_cmpldi2_insn): Likewise.
>> ++ * config/arm/constraints.md: Remove De, Df, Dg constraints.
>> ++ * config/arm/iwmmxt.md (iwmmxt_iordi3): Remove general register
>> ++ alternative.
>> ++ (iwmmxt_xordi3): Likewise.
>> ++ (iwmmxt_anddi3): Likewise.
>> ++ * config/arm/neon.md (orndi3_neon): Remove pattern.
>> ++ (anddi_notdi_di): Likewise.
>> ++ * config/arm/predicates.md (arm_anddi_operand_neon): Remove.
>> ++ (arm_iordi_operand_neon): Likewise.
>> ++ (arm_xordi_operand_neon): Likewise.
>> ++ * config/arm/thumb2.md(iordi_notdi_di): Remove pattern.
>> ++ (iordi_notzesidi_di): Likewise.
>> ++ (iordi_notdi_zesidi): Likewise.
>> ++ (iordi_notsesidi_di): Likewise.
>> ++
>> ++2019-08-22 Richard Earnshaw <rearnsha at arm.com>
>> ++
>> ++ * config/arm/arm.md (iorsi3_compare0): Add alternative for 16-bit thumb
>> ++ insn.
>> ++ (iorsi3_compare0_scratch): Likewise.
>> ++
>> ++2019-08-22 Sylvia Taylor <sylvia.taylor at arm.com>
>> ++
>> ++ * config/aarch64/aarch64-simd-builtins.def:
>> ++ (ld1x4): New.
>> ++ (st1x4): Likewise.
>> ++ * config/aarch64/aarch64-simd.md:
>> ++ (aarch64_ld1x4<VALLDIF:mode>): New pattern.
>> ++ (aarch64_st1x4<VALLDIF:mode>): Likewise.
>> ++ (aarch64_ld1_x4_<mode>): Likewise.
>> ++ (aarch64_st1_x4_<mode>): Likewise.
>> ++ * config/aarch64/arm_neon.h:
>> ++ (vld1_s8_x4): New function.
>> ++ (vld1q_s8_x4): Likewise.
>> ++ (vld1_s16_x4): Likewise.
>> ++ (vld1q_s16_x4): Likewise.
>> ++ (vld1_s32_x4): Likewise.
>> ++ (vld1q_s32_x4): Likewise.
>> ++ (vld1_u8_x4): Likewise.
>> ++ (vld1q_u8_x4): Likewise.
>> ++ (vld1_u16_x4): Likewise.
>> ++ (vld1q_u16_x4): Likewise.
>> ++ (vld1_u32_x4): Likewise.
>> ++ (vld1q_u32_x4): Likewise.
>> ++ (vld1_f16_x4): Likewise.
>> ++ (vld1q_f16_x4): Likewise.
>> ++ (vld1_f32_x4): Likewise.
>> ++ (vld1q_f32_x4): Likewise.
>> ++ (vld1_p8_x4): Likewise.
>> ++ (vld1q_p8_x4): Likewise.
>> ++ (vld1_p16_x4): Likewise.
>> ++ (vld1q_p16_x4): Likewise.
>> ++ (vld1_s64_x4): Likewise.
>> ++ (vld1_u64_x4): Likewise.
>> ++ (vld1_p64_x4): Likewise.
>> ++ (vld1q_s64_x4): Likewise.
>> ++ (vld1q_u64_x4): Likewise.
>> ++ (vld1q_p64_x4): Likewise.
>> ++ (vld1_f64_x4): Likewise.
>> ++ (vld1q_f64_x4): Likewise.
>> ++ (vst1_s8_x4): Likewise.
>> ++ (vst1q_s8_x4): Likewise.
>> ++ (vst1_s16_x4): Likewise.
>> ++ (vst1q_s16_x4): Likewise.
>> ++ (vst1_s32_x4): Likewise.
>> ++ (vst1q_s32_x4): Likewise.
>> ++ (vst1_u8_x4): Likewise.
>> ++ (vst1q_u8_x4): Likewise.
>> ++ (vst1_u16_x4): Likewise.
>> ++ (vst1q_u16_x4): Likewise.
>> ++ (vst1_u32_x4): Likewise.
>> ++ (vst1q_u32_x4): Likewise.
>> ++ (vst1_f16_x4): Likewise.
>> ++ (vst1q_f16_x4): Likewise.
>> ++ (vst1_f32_x4): Likewise.
>> ++ (vst1q_f32_x4): Likewise.
>> ++ (vst1_p8_x4): Likewise.
>> ++ (vst1q_p8_x4): Likewise.
>> ++ (vst1_p16_x4): Likewise.
>> ++ (vst1q_p16_x4): Likewise.
>> ++ (vst1_s64_x4): Likewise.
>> ++ (vst1_u64_x4): Likewise.
>> ++ (vst1_p64_x4): Likewise.
>> ++ (vst1q_s64_x4): Likewise.
>> ++ (vst1q_u64_x4): Likewise.
>> ++ (vst1q_p64_x4): Likewise.
>> ++ (vst1_f64_x4): Likewise.
>> ++ (vst1q_f64_x4): Likewise.
>> ++
>> ++2019-08-22 Prathamesh Kulkarni <prathamesh.kulkarni at linaro.org>
>> ++
>> ++ * config/aarch64/aarch64-sve.md (vcond_mask): Add "@".
>> ++
>> ++2019-08-22 Prathamesh Kulkarni <prathamesh.kulkarni at linaro.org>
>> ++ Richard Sandiford <richard.sandiford at arm.com>
>> ++
>> ++ PR target/88839
>> ++ * config/aarch64/aarch64.c (aarch64_evpc_sel): New function.
>> ++ (aarch64_expand_vec_perm_const_1): Call aarch64_evpc_sel.
>> ++
>> ++2019-08-21 Prathamesh Kulkarni <prathamesh.kulkarni at linaro.org>
>> ++
>> ++ PR target/90724
>> ++ * config/aarch64/aarch64.c (aarch64_gen_compare_reg_maybe_ze): Force y
>> ++ in reg if it fails aarch64_plus_operand predicate.
>> ++
>> ++2019-08-21 Richard Biener <rguenther at suse.de>
>> ++
>> ++ PR tree-optimization/91482
>> ++ * tree-ssa-ccp.c (ccp_folder::fold_stmt): Remove useless
>> ++ BUILT_IN_ASSUME_ALIGNED calls.
>> ++
>> ++2019-08-21 Richard Biener <rguenther at suse.de>
>> ++
>> ++ PR target/91498
>> ++ PR target/91503
>> ++ * config/i386/i386-features.c
>> ++ (general_scalar_chain::make_vector_copies): Copy stack temporary
>> ++ rtx when using it multiple times.
>> ++ (general_scalar_chain::convert_reg): Likewise.
>> ++
>> ++2019-08-20 Bernd Edlinger <bernd.edlinger at hotmail.de>
>> ++
>> ++ * function.c (assign_parm_find_stack_rtl): Use known_eq instead of ==.
>> ++
>> ++2019-08-20 Matthew Beliveau <mbelivea at redhat.com>
>> ++
>> ++ * tree-ssa-dse.c (dse_optimize_redundant_stores): Improved check to
>> ++ catch more redundant zero initialization cases.
>> ++ (dse_dom_walker::dse_optimize_stmt): Likewise.
>> ++
>> ++2019-08-20 Richard Biener <rguenther at suse.de>
>> ++
>> ++ PR lto/91307
>> ++ * ipa.c (cgraph_build_static_cdtor_1): Use names not recognizable
>> ++ by collect2 when targetm.have_ctors_dtors which avoids dragging
>> ++ in temporary filenames from LTO input objects.
>> ++
>> ++2019-08-20 Richard Biener <rguenther at suse.de>
>> ++
>> ++ PR tree-optimization/37242
>> ++ * tree-ssa-sccvn.c (visit_nary_op): Also CSE (T)(a + b)
>> ++ to (T)a + (T)b if we know that a + b does not overflow.
>> ++
>> ++2019-08-20 Eric Botcazou <ebotcazou at adacore.com>
>> ++
>> ++ PR rtl-optimization/91347
>> ++ * dse.c (scan_insn): Call add_wild_read for non-const/memset tail calls
>> ++ before reload if HARD_FRAME_POINTER_IS_ARG_POINTER.
>> ++
>> ++2019-08-20 Richard Sandiford <richard.sandiford at arm.com>
>> ++
>> ++ * calls.h (function_arg_info): Add a pass_by_reference field,
>> ++ defaulting to false.
>> ++ * calls.c (apply_pass_by_reference_rules): Set pass_by_reference
>> ++ when applying pass-by-reference semantics.
>> ++ (initialize_argument_information): Likewise.
>> ++ (emit_library_call_value_1): Likewise.
>> ++ * function.c (assign_parm_data_one): Remove passed_pointer field.
>> ++ (assign_parm_find_data_types): Don't set it.
>> ++ (assign_parm_find_stack_rtl, assign_parm_adjust_stack_rtl)
>> ++ (assign_parm_setup_reg, assign_parms, gimplify_parameters): Use
>> ++ arg.pass_by_reference instead of passed_pointer.
>> ++
>> ++2019-08-20 Richard Sandiford <richard.sandiford at arm.com>
>> ++
>> ++ * calls.c (emit_library_call_value_1): Merge arg and orig_arg
>> ++ into a single function_arg_info, updating its fields when we
>> ++ apply pass-by-reference and promotion semantics. Use the
>> ++ function_arg_info to track the mode rather than keeping it in
>> ++ a separate local variable.
>> ++ (initialize_argument_information): Likewise. Base the final
>> ++ arg_to_skip on this new function_arg_info rather than creating
>> ++ a new one from scratch.
>> ++
>> ++2019-08-20 Richard Sandiford <richard.sandiford at arm.com>
>> ++
>> ++ * function.c (assign_parm_data_one): Replace passed_type,
>> ++ promoted_mode and named_arg with a function_arg_info field.
>> ++ (assign_parm_find_data_types): Remove local variables and
>> ++ assign directly to "data". Make data->passed_mode shadow
>> ++ data->arg.mode until promotion, then assign the promoted
>> ++ mode to data->arg.mode.
>> ++ (assign_parms_setup_varargs, assign_parm_find_entry_rtl)
>> ++ (assign_parm_find_stack_rtl, assign_parm_adjust_entry_rtl)
>> ++ (assign_parm_remove_parallels, assign_parm_setup_block_p)
>> ++ (assign_parm_setup_block, assign_parm_setup_reg)
>> ++ (assign_parm_setup_stack, assign_parms, gimplify_parameters): Use
>> ++ arg.mode instead of promoted_mode, arg.type instead of passed_type
>> ++ and arg.named instead of named_arg. Use data->arg for
>> ++ function_arg_info structures that had the field values passed_type,
>> ++ promoted_mode and named_arg. Base other function_arg_infos on
>> ++ data->arg, changing the necessary properties.
>> ++
>> ++2019-08-20 Richard Sandiford <richard.sandiford at arm.com>
>> ++
>> ++ * calls.h (apply_pass_by_reference_rules): Declare.
>> ++ * calls.c (apply_pass_by_reference_rules): New function.
>> ++ * config/c6x/c6x.c (c6x_call_saved_register_used): Use it.
>> ++ * config/rs6000/rs6000-call.c (rs6000_parm_needs_stack): Likewise.
>> ++ * config/s390/s390.c (s390_call_saved_register_used): Likewise.
>> ++ * function.c (assign_parm_find_data_types): Likewise.
>> ++ * var-tracking.c (prepare_call_arguments): Likewise.
>> ++
>> ++2019-08-20 Richard Sandiford <richard.sandiford at arm.com>
>> ++
>> ++ * target.def (must_pass_in_stack): Take a function_arg_info instead
>> ++ of a mode and a type.
>> ++ * doc/tm.texi: Regenerate.
>> ++ * calls.h (must_pass_in_stack_var_size): Take a function_arg_info
>> ++ instead of a mode and a type.
>> ++ (must_pass_in_stack_var_size_or_pad): Likewise.
>> ++ * calls.c (must_pass_in_stack_var_size): Likewise.
>> ++ (must_pass_in_stack_var_size_or_pad): Likewise.
>> ++ (initialize_argument_information): Update call to
>> ++ targetm.calls.must_pass_in_stack.
>> ++ (must_pass_va_arg_on_stack): Likewise.
>> ++ * function.c (assign_parm_find_entry_rtl): Likewise.
>> ++ * targhooks.c (hook_pass_by_reference_must_pass_in_stack): Likewise.
>> ++ * config/alpha/alpha.c (alpha_function_arg): Likewise.
>> ++ (alpha_function_arg_advance): Likewise.
>> ++ * config/cr16/cr16.c (cr16_function_arg): Likewise.
>> ++ (cr16_function_arg_advance): Likewise.
>> ++ * config/cris/cris.c (cris_pass_by_reference): Likewise.
>> ++ (cris_arg_partial_bytes): Likewise.
>> ++ * config/iq2000/iq2000.c (iq2000_pass_by_reference): Likewise.
>> ++ * config/lm32/lm32.c (lm32_function_arg): Likewise.
>> ++ * config/mcore/mcore.c (mcore_num_arg_regs): Likewise.
>> ++ (mcore_function_arg, mcore_arg_partial_bytes): Likewise.
>> ++ * config/mips/mips.c (mips_pass_by_reference): Likewise.
>> ++ * config/mmix/mmix.c (mmix_function_arg_advance): Likewise.
>> ++ (mmix_function_arg_1, mmix_pass_by_reference): Likewise.
>> ++ * config/sh/sh.c (sh_pass_by_reference): Likewise.
>> ++ * config/stormy16/stormy16.c (xstormy16_function_arg): Likewise.
>> ++ * config/xtensa/xtensa.c (xtensa_function_arg_advance): Likewise.
>> ++ * config/arm/arm.c (arm_must_pass_in_stack): Take a function_arg_info
>> ++ instead of a mode and a type.
>> ++ * config/fr30/fr30.c (fr30_must_pass_in_stack): Likewise.
>> ++ (fr30_num_arg_regs): Likewise.
>> ++ (fr30_setup_incoming_varargs): Update calls accordingly.
>> ++ (fr30_arg_partial_bytes, fr30_function_arg): Likewise.
>> ++ (fr30_function_arg_advance): Likewise.
>> ++ * config/frv/frv.c (frv_must_pass_in_stack): Take a function_arg_info
>> ++ instead of a mode and a type.
>> ++ * config/gcn/gcn.c (num_arg_regs): Likewise.
>> ++ (gcn_function_arg, gcn_function_arg_advance): Update calls to
>> ++ num_arg_regs and targetm.calls.must_pass_in_stack.
>> ++ (gcn_arg_partial_bytes): Likewise.
>> ++ * config/i386/i386.c (ix86_must_pass_in_stack): Take a
>> ++ function_arg_info instead of a mode and a type.
>> ++ (classify_argument): Update call accordingly.
>> ++ * config/nds32/nds32.c (nds32_must_pass_in_stack): Take a
>> ++ function_arg_info instead of a mode and a type.
>> ++ * config/rs6000/rs6000-internal.h (rs6000_must_pass_in_stack):
>> ++ Likewise.
>> ++ * config/rs6000/rs6000-call.c (rs6000_must_pass_in_stack): Likewise.
>> ++ (rs6000_parm_needs_stack): Update call accordingly.
>> ++ (setup_incoming_varargs): Likewise.
>> +
>> + * GCC 8.2.0 released.
>> +
>> +diff --git a/gcc/config/rs6000/rs6000.md b/gcc/config/rs6000/rs6000.md
>> +index 60058814b8a..d706c6ecd1a 100644
>> +--- a/gcc/config/rs6000/rs6000.md
>> ++++ b/gcc/config/rs6000/rs6000.md
>> +@@ -138,6 +138,9 @@
>> + UNSPEC_STACK_CHECK
>> + UNSPEC_FUSION_P9
>> + UNSPEC_FUSION_ADDIS
>> ++ UNSPEC_CMPRB
>> ++ UNSPEC_CMPRB2
>> ++ UNSPEC_CMPEQB
>> + UNSPEC_ADD_ROUND_TO_ODD
>> + UNSPEC_SUB_ROUND_TO_ODD
>> + UNSPEC_MUL_ROUND_TO_ODD
>> +@@ -162,6 +165,9 @@
>> + UNSPECV_EH_RR ; eh_reg_restore
>> + UNSPECV_ISYNC ; isync instruction
>> + UNSPECV_MFTB ; move from time base
>> ++ UNSPECV_DARN ; darn 1 (deliver a random number)
>> ++ UNSPECV_DARN_32 ; darn 2
>> ++ UNSPECV_DARN_RAW ; darn 0
>> + UNSPECV_NLGR ; non-local goto receiver
>> + UNSPECV_MFFS ; Move from FPSCR
>> + UNSPECV_MTFSF ; Move to FPSCR Fields
>> +@@ -14603,7 +14609,168 @@
>> + [(set_attr "type" "veccmp")
>> + (set_attr "size" "128")])
>> +
>> +-
>> ++;; Miscellaneous ISA 3.0 (power9) instructions
>> ++(define_insn "darn_32"
>> ++ [(set (match_operand:SI 0 "register_operand" "=r")
>> ++ (unspec_volatile:SI [(const_int 0)] UNSPECV_DARN_32))]
>> ++ "TARGET_P9_MISC"
>> ++ "darn %0,0"
>> ++ [(set_attr "type" "integer")])
>> ++
>> ++(define_insn "darn_raw"
>> ++ [(set (match_operand:DI 0 "register_operand" "=r")
>> ++ (unspec_volatile:DI [(const_int 0)] UNSPECV_DARN_RAW))]
>> ++ "TARGET_P9_MISC && TARGET_64BIT"
>> ++ "darn %0,2"
>> ++ [(set_attr "type" "integer")])
>> ++
>> ++(define_insn "darn"
>> ++ [(set (match_operand:DI 0 "register_operand" "=r")
>> ++ (unspec_volatile:DI [(const_int 0)] UNSPECV_DARN))]
>> ++ "TARGET_P9_MISC && TARGET_64BIT"
>> ++ "darn %0,1"
>> ++ [(set_attr "type" "integer")])
>> ++
>> ++;; Test byte within range.
>> ++;;
>> ++;; The bytes of operand 1 are organized as xx:xx:xx:vv, where xx
>> ++;; represents a byte whose value is ignored in this context and
>> ++;; vv, the least significant byte, holds the byte value that is to
>> ++;; be tested for membership within the range specified by operand 2.
>> ++;; The bytes of operand 2 are organized as xx:xx:hi:lo.
>> ++;;
>> ++;; Return in target register operand 0 a value of 1 if lo <= vv and
>> ++;; vv <= hi. Otherwise, set register operand 0 to 0.
>> ++;;
>> ++;; Though the instructions to which this expansion maps operate on
>> ++;; 64-bit registers, the current implementation only operates on
>> ++;; SI-mode operands as the high-order bits provide no information
>> ++;; that is not already available in the low-order bits. To avoid the
>> ++;; costs of data widening operations, future enhancements might allow
>> ++;; DI mode for operand 0 and/or might allow operand 1 to be QI mode.
>> ++(define_expand "cmprb"
>> ++ [(set (match_dup 3)
>> ++ (unspec:CC [(match_operand:SI 1 "gpc_reg_operand" "r")
>> ++ (match_operand:SI 2 "gpc_reg_operand" "r")]
>> ++ UNSPEC_CMPRB))
>> ++ (set (match_operand:SI 0 "gpc_reg_operand" "=r")
>> ++ (if_then_else:SI (lt (match_dup 3)
>> ++ (const_int 0))
>> ++ (const_int -1)
>> ++ (if_then_else (gt (match_dup 3)
>> ++ (const_int 0))
>> ++ (const_int 1)
>> ++ (const_int 0))))]
>> ++ "TARGET_P9_MISC"
>> ++{
>> ++ operands[3] = gen_reg_rtx (CCmode);
>> ++})
>> ++
>> ++;; The bytes of operand 1 are organized as xx:xx:xx:vv, where xx
>> ++;; represents a byte whose value is ignored in this context and
>> ++;; vv, the least significant byte, holds the byte value that is to
>> ++;; be tested for membership within the range specified by operand 2.
>> ++;; The bytes of operand 2 are organized as xx:xx:hi:lo.
>> ++;;
>> ++;; Set bit 1 (the GT bit, 0x4) of CR register operand 0 to 1 if
>> ++;; lo <= vv and vv <= hi. Otherwise, set the GT bit to 0. The other
>> ++;; 3 bits of the target CR register are all set to 0.
>> ++(define_insn "*cmprb_internal"
>> ++ [(set (match_operand:CC 0 "cc_reg_operand" "=y")
>> ++ (unspec:CC [(match_operand:SI 1 "gpc_reg_operand" "r")
>> ++ (match_operand:SI 2 "gpc_reg_operand" "r")]
>> ++ UNSPEC_CMPRB))]
>> ++ "TARGET_P9_MISC"
>> ++ "cmprb %0,0,%1,%2"
>> ++ [(set_attr "type" "logical")])
>> ++
>> ++;; Set operand 0 register to -1 if the LT bit (0x8) of condition
>> ++;; register operand 1 is on. Otherwise, set operand 0 register to 1
>> ++;; if the GT bit (0x4) of condition register operand 1 is on.
>> ++;; Otherwise, set operand 0 to 0. Note that the result stored into
>> ++;; register operand 0 is non-zero iff either the LT or GT bits are on
>> ++;; within condition register operand 1.
>> ++(define_insn "setb_signed"
>> ++ [(set (match_operand:SI 0 "gpc_reg_operand" "=r")
>> ++ (if_then_else:SI (lt (match_operand:CC 1 "cc_reg_operand" "y")
>> ++ (const_int 0))
>> ++ (const_int -1)
>> ++ (if_then_else (gt (match_dup 1)
>> ++ (const_int 0))
>> ++ (const_int 1)
>> ++ (const_int 0))))]
>> ++ "TARGET_P9_MISC"
>> ++ "setb %0,%1"
>> ++ [(set_attr "type" "logical")])
>> ++
>> ++(define_insn "setb_unsigned"
>> ++ [(set (match_operand:SI 0 "gpc_reg_operand" "=r")
>> ++ (if_then_else:SI (ltu (match_operand:CCUNS 1 "cc_reg_operand" "y")
>> ++ (const_int 0))
>> ++ (const_int -1)
>> ++ (if_then_else (gtu (match_dup 1)
>> ++ (const_int 0))
>> ++ (const_int 1)
>> ++ (const_int 0))))]
>> ++ "TARGET_P9_MISC"
>> ++ "setb %0,%1"
>> ++ [(set_attr "type" "logical")])
>> ++
>> ++;; Test byte within two ranges.
>> ++;;
>> ++;; The bytes of operand 1 are organized as xx:xx:xx:vv, where xx
>> ++;; represents a byte whose value is ignored in this context and
>> ++;; vv, the least significant byte, holds the byte value that is to
>> ++;; be tested for membership within the range specified by operand 2.
>> ++;; The bytes of operand 2 are organized as hi_1:lo_1:hi_2:lo_2.
>> ++;;
>> ++;; Return in target register operand 0 a value of 1 if (lo_1 <= vv and
>> ++;; vv <= hi_1) or if (lo_2 <= vv and vv <= hi_2). Otherwise, set register
>> ++;; operand 0 to 0.
>> ++;;
>> ++;; Though the instructions to which this expansion maps operate on
>> ++;; 64-bit registers, the current implementation only operates on
>> ++;; SI-mode operands as the high-order bits provide no information
>> ++;; that is not already available in the low-order bits. To avoid the
>> ++;; costs of data widening operations, future enhancements might allow
>> ++;; DI mode for operand 0 and/or might allow operand 1 to be QI mode.
>> ++(define_expand "cmprb2"
>> ++ [(set (match_dup 3)
>> ++ (unspec:CC [(match_operand:SI 1 "gpc_reg_operand" "r")
>> ++ (match_operand:SI 2 "gpc_reg_operand" "r")]
>> ++ UNSPEC_CMPRB2))
>> ++ (set (match_operand:SI 0 "gpc_reg_operand" "=r")
>> ++ (if_then_else:SI (lt (match_dup 3)
>> ++ (const_int 0))
>> ++ (const_int -1)
>> ++ (if_then_else (gt (match_dup 3)
>> ++ (const_int 0))
>> ++ (const_int 1)
>> ++ (const_int 0))))]
>> ++ "TARGET_P9_MISC"
>> ++{
>> ++ operands[3] = gen_reg_rtx (CCmode);
>> ++})
>> ++
>> ++;; The bytes of operand 1 are organized as xx:xx:xx:vv, where xx
>> ++;; represents a byte whose value is ignored in this context and
>> ++;; vv, the least significant byte, holds the byte value that is to
>> ++;; be tested for membership within the ranges specified by operand 2.
>> ++;; The bytes of operand 2 are organized as hi_1:lo_1:hi_2:lo_2.
>> ++;;
>> ++;; Set bit 1 (the GT bit, 0x4) of CR register operand 0 to 1 if
>> ++;; (lo_1 <= vv and vv <= hi_1) or if (lo_2 <= vv and vv <= hi_2).
>> ++;; Otherwise, set the GT bit to 0. The other 3 bits of the target
>> ++;; CR register are all set to 0.
>> ++(define_insn "*cmprb2_internal"
>> ++ [(set (match_operand:CC 0 "cc_reg_operand" "=y")
>> ++ (unspec:CC [(match_operand:SI 1 "gpc_reg_operand" "r")
>> ++ (match_operand:SI 2 "gpc_reg_operand" "r")]
>> ++ UNSPEC_CMPRB2))]
>> ++ "TARGET_P9_MISC"
>> ++ "cmprb %0,1,%1,%2"
>> ++ [(set_attr "type" "logical")])
>> ++
>> +
>> + (include "sync.md")
>> + (include "vector.md")
>> +--
>> +2.23.0
>> +
>> +
>> +From 650317c9974024bd33d533740450189c3d6540b0 Mon Sep 17 00:00:00 2001
>> +From: segher <segher at 138bc75d-0d04-0410-961f-82ee72b054a4>
>> +Date: Fri, 23 Aug 2019 22:19:40 +0000
>> +Subject: [PATCH 2/2] rs6000: New darn testcase (PR91481)
>> +Reply-To: muislam at microsoft.com
>> +
>> +We used to implement darn with unspecs, not unspec_volatiles, which
>> +means two darn instructions could be CSEd together.
>> +
>> +This testcase tests it by adding together four random numbers. If all
>> +is well that means we get four darn instructions, because such a small
>> +loop is unrolled fine at -O2 already. If things go bad, combine will
>> +combine it all to one darn and a shift left by two.
>> +
>> +gcc/testsuite/
>> + PR target/91481
>> + * gcc.target/powerpc/darn-3.c: New testcase.
>> +
>> +git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@274889 138bc75d-0d04-0410-961f-82ee72b054a4
>> +Signed-off-by: Muminul Islam <muislam at microsoft.com>
>> +
>> +CVE: CVE-2019-15847
>> +Upstream-Status: Backport
>> +---
>> + gcc/testsuite/ChangeLog | 7 ++++++-
>> + gcc/testsuite/gcc.target/powerpc/darn-3.c | 16 ++++++++++++++++
>> + 2 files changed, 22 insertions(+), 1 deletion(-)
>> + create mode 100644 gcc/testsuite/gcc.target/powerpc/darn-3.c
>> +
>> +diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
>> +index b80ff889f15..47ed83e50e6 100644
>> +--- a/gcc/testsuite/ChangeLog
>> ++++ b/gcc/testsuite/ChangeLog
>> +@@ -1,4 +1,9 @@
>> +-2018-07-26 Release Manager
>> ++2019-08-23 Segher Boessenkool <segher at kernel.crashing.org>
>> ++
>> ++ PR target/91481
>> ++ * gcc.target/powerpc/darn-3.c: New testcase.
>> ++
>> ++2019-08-23 Marek Polacek <polacek at redhat.com>
>> +
>> + * GCC 8.2.0 released.
>> +
>> +diff --git a/gcc/testsuite/gcc.target/powerpc/darn-3.c b/gcc/testsuite/gcc.target/powerpc/darn-3.c
>> +new file mode 100644
>> +index 00000000000..477901fde70
>> +--- /dev/null
>> ++++ b/gcc/testsuite/gcc.target/powerpc/darn-3.c
>> +@@ -0,0 +1,16 @@
>> ++/* { dg-do compile { target { powerpc*-*-* } } } */
>> ++/* { dg-skip-if "" { powerpc*-*-aix* } } */
>> ++/* { dg-options "-O2 -mdejagnu-cpu=power9" } */
>> ++
>> ++static int darn32(void) { return __builtin_darn_32(); }
>> ++
>> ++int four(void)
>> ++{
>> ++ int sum = 0;
>> ++ int i;
>> ++ for (i = 0; i < 4; i++)
>> ++ sum += darn32();
>> ++ return sum;
>> ++}
>> ++
>> ++/* { dg-final { scan-assembler-times {(?n)\mdarn .*,0\M} 4 } } */
>> +--
>> +2.23.0
>> +
>> --
>> 2.23.0
>>
>> --
>> _______________________________________________
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>> Openembedded-core at lists.openembedded.org
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