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| author | Eric Botcazou <ebotcazou@libertysurf.fr> | 2007-04-19 13:19:16 +0200 |
|---|---|---|
| committer | Eric Botcazou <ebotcazou@gcc.gnu.org> | 2007-04-19 11:19:16 +0000 |
| commit | d47a8b8331c719df4f7c44af84eec7a63092a440 (patch) | |
| tree | 7a67687eb802bd0acdf8b565692414e4370ea6b1 /gcc/sched-deps.c | |
| parent | a777d6e96715af95b710dc3fbd2f7ef3b5d7a767 (diff) | |
| download | gcc-d47a8b8331c719df4f7c44af84eec7a63092a440.tar.gz | |
re PR rtl-optimization/29841 (ICE with scheduling and __builtin_trap)
PR rtl-optimization/29841
* cfgbuild.c (control_flow_insn_p): Return TRUE for unconditional
trap instructions.
* sched-deps.c (sched_analyze_insn): Prevent all non-jump instructions
that may cause control flow transfer from being moved.
From-SVN: r123970
Diffstat (limited to 'gcc/sched-deps.c')
| -rw-r--r-- | gcc/sched-deps.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/gcc/sched-deps.c b/gcc/sched-deps.c index c3dc5793d23..5a6a30a63c7 100644 --- a/gcc/sched-deps.c +++ b/gcc/sched-deps.c @@ -1598,8 +1598,12 @@ sched_analyze_insn (struct deps *deps, rtx x, rtx insn) /* If this instruction can throw an exception, then moving it changes where block boundaries fall. This is mighty confusing elsewhere. - Therefore, prevent such an instruction from being moved. */ - if (can_throw_internal (insn)) + Therefore, prevent such an instruction from being moved. Same for + non-jump instructions that define block boundaries. + ??? Unclear whether this is still necessary in EBB mode. If not, + add_branch_dependences should be adjusted for RGN mode instead. */ + if (((CALL_P (insn) || JUMP_P (insn)) && can_throw_internal (insn)) + || (NONJUMP_INSN_P (insn) && control_flow_insn_p (insn))) reg_pending_barrier = MOVE_BARRIER; /* Add dependencies if a scheduling barrier was found. */ |