[OE-core] [PATCH v2] gcc: backport tow patches to fix ICE in dwarf2out_var_location
jackie.huang at windriver.com
jackie.huang at windriver.com
Fri Oct 31 14:41:49 UTC 2014
From: Jackie Huang <jackie.huang at windriver.com>
The first patch fixes the ICE in dwarf2out_var_location, at
dwarf2out.c.
r212171:
* except.c (emit_note_eh_region_end): New helper function.
(convert_to_eh_region_ranges): Use emit_note_eh_region_end to
emit EH_REGION_END note.
* jump.c (cleanup_barriers): Do not split a call and its
corresponding CALL_ARG_LOCATION note.
But it introduced a regression issue:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63348
so backport the fix for the regression as well:
r215613:
PR rtl-optimization/63348
* emit-rtl.c (try_split): Do not emit extra barrier.
Signed-off-by: Jackie Huang <jackie.huang at windriver.com>
---
meta/recipes-devtools/gcc/gcc-4.9.inc | 2 +
.../gcc/gcc-4.9/0058-gcc-r212171.patch | 113 +++++++++++++++++++++
.../0059-gcc-PR-rtl-optimization-63348.patch | 59 +++++++++++
3 files changed, 174 insertions(+)
create mode 100644 meta/recipes-devtools/gcc/gcc-4.9/0058-gcc-r212171.patch
create mode 100644 meta/recipes-devtools/gcc/gcc-4.9/0059-gcc-PR-rtl-optimization-63348.patch
diff --git a/meta/recipes-devtools/gcc/gcc-4.9.inc b/meta/recipes-devtools/gcc/gcc-4.9.inc
index 9a66cd2..8769128 100644
--- a/meta/recipes-devtools/gcc/gcc-4.9.inc
+++ b/meta/recipes-devtools/gcc/gcc-4.9.inc
@@ -71,6 +71,8 @@ SRC_URI = "\
file://0054-gcc-Makefile.in-fix-parallel-building-failure.patch \
file://0055-PR-rtl-optimization-61801.patch \
file://0056-top-level-reorder_gcc-bug-61144.patch \
+ file://0058-gcc-r212171.patch \
+ file://0059-gcc-PR-rtl-optimization-63348.patch \
"
SRC_URI[md5sum] = "fddf71348546af523353bd43d34919c1"
SRC_URI[sha256sum] = "d334781a124ada6f38e63b545e2a3b8c2183049515a1abab6d513f109f1d717e"
diff --git a/meta/recipes-devtools/gcc/gcc-4.9/0058-gcc-r212171.patch b/meta/recipes-devtools/gcc/gcc-4.9/0058-gcc-r212171.patch
new file mode 100644
index 0000000..4b312d4
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-4.9/0058-gcc-r212171.patch
@@ -0,0 +1,113 @@
+From ca03cf1b133d66eb978c68f6dbc345e9aabcba88 Mon Sep 17 00:00:00 2001
+From: uros <uros at 138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Mon, 30 Jun 2014 19:30:52 +0000
+Subject: [PATCH] r212171
+
+* except.c (emit_note_eh_region_end): New helper
+ function. (convert_to_eh_region_ranges): Use
+ emit_note_eh_region_end to emit EH_REGION_END note.
+ * jump.c (cleanup_barriers): Do not split a call and its
+ corresponding CALL_ARG_LOCATION note.
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@212171 138bc75d-0d04-0410-961f-82ee72b054a4
+
+Upstream-status: Backport [https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=212171]
+Signed-off-by: Baoshan Pang <baoshan.pang at windriver.com>
+---
+ gcc/except.c | 23 ++++++++++++++++++-----
+ gcc/jump.c | 19 +++++++++++++++----
+ 2 files changed, 33 insertions(+), 9 deletions(-)
+
+diff --git a/gcc/except.c b/gcc/except.c
+index dc5c1d2..7ac114f 100644
+--- a/gcc/except.c
++++ b/gcc/except.c
+@@ -2466,6 +2466,20 @@ add_call_site (rtx landing_pad, int action, int section)
+ return call_site_base + crtl->eh.call_site_record_v[section]->length () - 1;
+ }
+
++static rtx
++emit_note_eh_region_end (rtx insn)
++{
++ rtx next = NEXT_INSN (insn);
++
++ /* Make sure we do not split a call and its corresponding
++ CALL_ARG_LOCATION note. */
++ if (next && NOTE_P (next)
++ && NOTE_KIND (next) == NOTE_INSN_CALL_ARG_LOCATION)
++ insn = next;
++
++ return emit_note_after (NOTE_INSN_EH_REGION_END, insn);
++}
++
+ /* Turn REG_EH_REGION notes back into NOTE_INSN_EH_REGION notes.
+ The new note numbers will not refer to region numbers, but
+ instead to call site entries. */
+@@ -2544,8 +2558,8 @@ convert_to_eh_region_ranges (void)
+ note = emit_note_before (NOTE_INSN_EH_REGION_BEG,
+ first_no_action_insn_before_switch);
+ NOTE_EH_HANDLER (note) = call_site;
+- note = emit_note_after (NOTE_INSN_EH_REGION_END,
+- last_no_action_insn_before_switch);
++ note
++ = emit_note_eh_region_end (last_no_action_insn_before_switch);
+ NOTE_EH_HANDLER (note) = call_site;
+ gcc_assert (last_action != -3
+ || (last_action_insn
+@@ -2569,8 +2583,7 @@ convert_to_eh_region_ranges (void)
+ first_no_action_insn = NULL_RTX;
+ }
+
+- note = emit_note_after (NOTE_INSN_EH_REGION_END,
+- last_action_insn);
++ note = emit_note_eh_region_end (last_action_insn);
+ NOTE_EH_HANDLER (note) = call_site;
+ }
+
+@@ -2617,7 +2630,7 @@ convert_to_eh_region_ranges (void)
+
+ if (last_action >= -1 && ! first_no_action_insn)
+ {
+- note = emit_note_after (NOTE_INSN_EH_REGION_END, last_action_insn);
++ note = emit_note_eh_region_end (last_action_insn);
+ NOTE_EH_HANDLER (note) = call_site;
+ }
+
+diff --git a/gcc/jump.c b/gcc/jump.c
+index 9418f65..a5e5f52 100644
+--- a/gcc/jump.c
++++ b/gcc/jump.c
+@@ -121,15 +121,26 @@ rebuild_jump_labels_chain (rtx chain)
+ static unsigned int
+ cleanup_barriers (void)
+ {
+- rtx insn, next, prev;
+- for (insn = get_insns (); insn; insn = next)
++ rtx insn;
++ for (insn = get_insns (); insn; insn = NEXT_INSN (insn))
+ {
+- next = NEXT_INSN (insn);
+ if (BARRIER_P (insn))
+ {
+- prev = prev_nonnote_insn (insn);
++ rtx prev = prev_nonnote_insn (insn);
+ if (!prev)
+ continue;
++
++ if (CALL_P (prev))
++ {
++ /* Make sure we do not split a call and its corresponding
++ CALL_ARG_LOCATION note. */
++ rtx next = NEXT_INSN (prev);
++
++ if (NOTE_P (next)
++ && NOTE_KIND (next) == NOTE_INSN_CALL_ARG_LOCATION)
++ prev = next;
++ }
++
+ if (BARRIER_P (prev))
+ delete_insn (insn);
+ else if (prev != PREV_INSN (insn))
+--
+1.7.9.5
+
diff --git a/meta/recipes-devtools/gcc/gcc-4.9/0059-gcc-PR-rtl-optimization-63348.patch b/meta/recipes-devtools/gcc/gcc-4.9/0059-gcc-PR-rtl-optimization-63348.patch
new file mode 100644
index 0000000..6d24aa4
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-4.9/0059-gcc-PR-rtl-optimization-63348.patch
@@ -0,0 +1,59 @@
+From 6eae3e637fcc22d21b51d44d61e3a9cb4825e776 Mon Sep 17 00:00:00 2001
+From: Jackie Huang <jackie.huang at windriver.com>
+Date: Thu, 30 Oct 2014 20:37:14 -0700
+Subject: [PATCH]PR rtl-optimization/63348
+
+PR rtl-optimization/63348
+* emit-rtl.c (try_split): Do not emit extra barrier.
+
+Note: this patch is to fix the side effect introduced by r212171 which was reported at:
+https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63348
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@215613 138bc75d-0d04-0410-961f-82ee72b054a4
+
+Upstream-status: Backport [https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=215613]
+Signed-off-by: Baoshan Pang <baoshan.pang at windriver.com>
+Signed-off-by: Jackie Huang <jackie.huang at windriver.com>
+---
+ gcc/emit-rtl.c | 11 -----------
+ 1 files changed, 0 insertions(+), 11 deletions(-)
+
+diff --git a/gcc/emit-rtl.c b/gcc/emit-rtl.c
+index 4736f8d..ae69dbd 100644
+--- a/gcc/emit-rtl.c
++++ b/gcc/emit-rtl.c
+@@ -3422,7 +3422,6 @@ try_split (rtx pat, rtx trial, int last)
+ {
+ rtx before = PREV_INSN (trial);
+ rtx after = NEXT_INSN (trial);
+- int has_barrier = 0;
+ rtx note, seq, tem;
+ int probability;
+ rtx insn_last, insn;
+@@ -3441,14 +3440,6 @@ try_split (rtx pat, rtx trial, int last)
+
+ split_branch_probability = -1;
+
+- /* If we are splitting a JUMP_INSN, it might be followed by a BARRIER.
+- We may need to handle this specially. */
+- if (after && BARRIER_P (after))
+- {
+- has_barrier = 1;
+- after = NEXT_INSN (after);
+- }
+-
+ if (!seq)
+ return trial;
+
+@@ -3594,8 +3585,6 @@ try_split (rtx pat, rtx trial, int last)
+ tem = emit_insn_after_setloc (seq, trial, INSN_LOCATION (trial));
+
+ delete_insn (trial);
+- if (has_barrier)
+- emit_barrier_after (tem);
+
+ /* Recursively call try_split for each new insn created; by the
+ time control returns here that insn will be fully split, so
+--
+1.7.1
+
--
2.0.0
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