26 lines
1.1 KiB
Diff
26 lines
1.1 KiB
Diff
GCC bug fix for <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61801>.
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Initially discussed at
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<http://lists.gnu.org/archive/html/guix-devel/2014-09/msg00283.html>.
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Patch from <https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=212740>.
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2014-07-17 Richard Biener <rguenther@suse.de>
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PR rtl-optimization/61801
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* sched-deps.c (sched_analyze_2): For ASM_OPERANDS and
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ASM_INPUT don't set reg_pending_barrier if it appears in a
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debug-insn.
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--- gcc-4_8-branch/gcc/sched-deps.c 2014/07/17 07:48:49 212739
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+++ gcc-4_8-branch/gcc/sched-deps.c 2014/07/17 07:49:44 212740
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@@ -2744,7 +2744,8 @@
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Consider for instance a volatile asm that changes the fpu rounding
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mode. An insn should not be moved across this even if it only uses
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pseudo-regs because it might give an incorrectly rounded result. */
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- if (code != ASM_OPERANDS || MEM_VOLATILE_P (x))
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+ if ((code != ASM_OPERANDS || MEM_VOLATILE_P (x))
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+ && !DEBUG_INSN_P (insn))
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reg_pending_barrier = TRUE_BARRIER;
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/* For all ASM_OPERANDS, we must traverse the vector of input operands.
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