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re PR rtl-optimization/50764 (ICE: in maybe_record_trace_start, at dwarf2cfi.c:2243 with -O2 -fsched2-use-superblocks -ftree-tail-merge) 

2011-11-22  Tom de Vries  <tom@codesourcery.com>

	PR rtl-optimization/50764
	* sched-deps.c (sched_analyze_insn): Make sure frame-related insns are
	not moved past preceding jump.

From-SVN: r181639
This commit is contained in:
Tom de Vries 2011-11-22 20:55:01 +00:00 committed by Tom de Vries
parent 8733916b60
commit 2db036a74e
2 changed files with 14 additions and 2 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2011-11-22 Tom de Vries <tom@codesourcery.com>
PR rtl-optimization/50764
* sched-deps.c (sched_analyze_insn): Make sure frame-related insns are
not moved past preceding jump.
2011-11-22 Jeff Law <law@redhat.com>
* doc/contrib.texi: Add entry for David Binderman.

10
gcc/sched-deps.c
View File

@ -2812,8 +2812,14 @@ sched_analyze_insn (struct deps_desc *deps, rtx x, rtx insn)
during prologue generation and avoid marking the frame pointer setup
as frame-related at all. */
if (RTX_FRAME_RELATED_P (insn))
deps->sched_before_next_jump
= alloc_INSN_LIST (insn, deps->sched_before_next_jump);
{
/* Make sure prologue insn is scheduled before next jump. */
deps->sched_before_next_jump
= alloc_INSN_LIST (insn, deps->sched_before_next_jump);
/* Make sure epilogue insn is scheduled after preceding jumps. */
add_dependence_list (insn, deps->pending_jump_insns, 1, REG_DEP_ANTI);
}
if (code == COND_EXEC)
{