6573521f08
A long-standing bug in gcc turns out to cause problems with unpatched Linux versions due to improved optimization enabled by gcc 4.9. The upstream fix missed the gcc-4.9.1 cut-off. It's also been applied upstream to the 4.8 branch so is being added for OE's 4.8 as well. (From OE-Core rev: 06f911894a367f395139c2b0d6c2ba6371398478) Signed-off-by: Peter A. Bigot <pab@pabigot.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
37 lines
1.3 KiB
Diff
37 lines
1.3 KiB
Diff
From 8dfe30973ab03f0480f1e249f320e78f210dc230 Mon Sep 17 00:00:00 2001
|
|
From: rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4>
|
|
Date: Thu, 17 Jul 2014 07:49:44 +0000
|
|
Subject: [PATCH] 2014-07-17 Richard Biener <rguenther@suse.de>
|
|
|
|
PR rtl-optimization/61801
|
|
* sched-deps.c (sched_analyze_2): For ASM_OPERANDS and
|
|
ASM_INPUT don't set reg_pending_barrier if it appears in a
|
|
debug-insn.
|
|
|
|
|
|
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_8-branch@212740 138bc75d-0d04-0410-961f-82ee72b054a4
|
|
|
|
Upstream-Status: Backport [https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61801]
|
|
Signed-off-by: Peter A. Bigot <pab@pabigot.com>
|
|
|
|
---
|
|
gcc/sched-deps.c | 3 ++-
|
|
|
|
diff --git a/gcc/sched-deps.c b/gcc/sched-deps.c
|
|
index 07857f2..4ac2542 100644
|
|
--- a/gcc/sched-deps.c
|
|
+++ b/gcc/sched-deps.c
|
|
@@ -2744,7 +2744,8 @@ sched_analyze_2 (struct deps_desc *deps, rtx x, rtx insn)
|
|
Consider for instance a volatile asm that changes the fpu rounding
|
|
mode. An insn should not be moved across this even if it only uses
|
|
pseudo-regs because it might give an incorrectly rounded result. */
|
|
- if (code != ASM_OPERANDS || MEM_VOLATILE_P (x))
|
|
+ if ((code != ASM_OPERANDS || MEM_VOLATILE_P (x))
|
|
+ && !DEBUG_INSN_P (insn))
|
|
reg_pending_barrier = TRUE_BARRIER;
|
|
|
|
/* For all ASM_OPERANDS, we must traverse the vector of input operands.
|
|
--
|
|
1.8.5.5
|
|
|