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| author | Tom de Vries <tom@codesourcery.com> | 2011-11-22 20:55:01 +0000 |
|---|---|---|
| committer | Tom de Vries <vries@gcc.gnu.org> | 2011-11-22 20:55:01 +0000 |
| commit | 2db036a74e64d79cf7f1a23527ed720add2fa4b7 (patch) | |
| tree | 737e03bbd0a1a9e5ecb2b417e9a01a85cc4cf2e1 /gcc | |
| parent | 8733916b600980c3c3b2603f7127dbf10c8a09f5 (diff) | |
| download | gcc-2db036a74e64d79cf7f1a23527ed720add2fa4b7.zip gcc-2db036a74e64d79cf7f1a23527ed720add2fa4b7.tar.gz gcc-2db036a74e64d79cf7f1a23527ed720add2fa4b7.tar.bz2 | |
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
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/sched-deps.c | 10 |
2 files changed, 14 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index df93891..4c7eca4d 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -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. diff --git a/gcc/sched-deps.c b/gcc/sched-deps.c index a778721..043204a 100644 --- a/gcc/sched-deps.c +++ b/gcc/sched-deps.c @@ -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) { |