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| author | Segher Boessenkool <segher@kernel.crashing.org> | 2016-12-01 03:04:10 +0100 |
|---|---|---|
| committer | Segher Boessenkool <segher@gcc.gnu.org> | 2016-12-01 03:04:10 +0100 |
| commit | 0f09127808018c479214478d3f79e0ac40a3c55b (patch) | |
| tree | c69848023a1231979a3e106f46baf23fb8e7cbdb /gcc/combine.c | |
| parent | e95a3eb3c67bfb9a2d3e954e272545d033e8dd7f (diff) | |
| download | gcc-0f09127808018c479214478d3f79e0ac40a3c55b.zip gcc-0f09127808018c479214478d3f79e0ac40a3c55b.tar.gz gcc-0f09127808018c479214478d3f79e0ac40a3c55b.tar.bz2 | |
combine: Emit a barrier after unconditional trap (PR78607)
After an unconditional trap there should be a barrier. In most cases
one is automatically inserted, but not if the trap is the final insn in
the instruction stream. We need to emit one explicitly.
PR rtl-optimization/78607
* combine.c (try_combine): Emit a barrier after a unconditional trap.
gcc/testsuite/
PR rtl-optimization/78607
* gcc.c-torture/compile/pr78607.c: New testcase.
From-SVN: r243092
Diffstat (limited to 'gcc/combine.c')
| -rw-r--r-- | gcc/combine.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/gcc/combine.c b/gcc/combine.c index a8dae89..faafcb7 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -4627,6 +4627,7 @@ try_combine (rtx_insn *i3, rtx_insn *i2, rtx_insn *i1, rtx_insn *i0, basic_block bb = BLOCK_FOR_INSN (i3); gcc_assert (bb); remove_edge (split_block (bb, i3)); + emit_barrier_after_bb (bb); *new_direct_jump_p = 1; } @@ -4637,6 +4638,7 @@ try_combine (rtx_insn *i3, rtx_insn *i2, rtx_insn *i1, rtx_insn *i0, basic_block bb = BLOCK_FOR_INSN (undobuf.other_insn); gcc_assert (bb); remove_edge (split_block (bb, undobuf.other_insn)); + emit_barrier_after_bb (bb); *new_direct_jump_p = 1; } |