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| author | Jakub Jelinek <jakub@redhat.com> | 2018-03-02 10:16:50 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2018-03-02 10:16:50 +0100 |
| commit | ec2d71214f90e21675a5abbe5b532273f7b11ded (patch) | |
| tree | 3d15c0641b451c63150370c5e946ac77cb1d82d3 /gcc/cfgcleanup.c | |
| parent | be86d201598e3b653acc6db1542b0c799c401e09 (diff) | |
re PR rtl-optimization/84614 (wrong code with u16->u128 extension at aarch64 -fno-split-wide-types -g3 --param=max-combine-insns=3)
PR target/84614
* rtl.h (prev_real_nondebug_insn, next_real_nondebug_insn): New
prototypes.
* emit-rtl.c (next_real_insn, prev_real_insn): Fix up function
comments.
(next_real_nondebug_insn, prev_real_nondebug_insn): New functions.
* cfgcleanup.c (try_head_merge_bb): Use prev_real_nondebug_insn
instead of a loop around prev_real_insn.
* combine.c (move_deaths): Use prev_real_nondebug_insn instead of
prev_real_insn.
* gcc.dg/pr84614.c: New test.
From-SVN: r258129
Diffstat (limited to 'gcc/cfgcleanup.c')
| -rw-r--r-- | gcc/cfgcleanup.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/gcc/cfgcleanup.c b/gcc/cfgcleanup.c index 6892d806e53..4f721537eb2 100644 --- a/gcc/cfgcleanup.c +++ b/gcc/cfgcleanup.c @@ -2448,9 +2448,7 @@ try_head_merge_bb (basic_block bb) max_match--; if (max_match == 0) return false; - do - e0_last_head = prev_real_insn (e0_last_head); - while (DEBUG_INSN_P (e0_last_head)); + e0_last_head = prev_real_nondebug_insn (e0_last_head); } if (max_match == 0) |