diff options
| author | Segher Boessenkool <segher@kernel.crashing.org> | 2018-09-19 19:38:11 +0200 |
|---|---|---|
| committer | Segher Boessenkool <segher@gcc.gnu.org> | 2018-09-19 19:38:11 +0200 |
| commit | ebdf17cb73df8e9759c9fd6d0afc0329c0072cd8 (patch) | |
| tree | 741490327756b0c522aed4b2649b87ae85571e1b /gcc/combine.c | |
| parent | fce33808678df40cce69c15141926342f8a6f47e (diff) | |
combine: Use correct mode in new comparison (PR86902)
This code in try_combine uses the wrong mode. This fails (with RTL
checking) in trunk, but not in any released branches.
PR rtl-optimization/86902
* combine.c (try_combine): When changing the CC mode used, don't change
an unrelated mode in other_insn to that new CC mode.
From-SVN: r264426
Diffstat (limited to 'gcc/combine.c')
| -rw-r--r-- | gcc/combine.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/gcc/combine.c b/gcc/combine.c index a2649b6d5a1..60cfe972aaf 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -3310,7 +3310,7 @@ try_combine (rtx_insn *i3, rtx_insn *i2, rtx_insn *i1, rtx_insn *i0, { /* Replace cc_use_loc with entire new RTX. */ SUBST (*cc_use_loc, - gen_rtx_fmt_ee (compare_code, compare_mode, + gen_rtx_fmt_ee (compare_code, GET_MODE (*cc_use_loc), newpat_dest, const0_rtx)); undobuf.other_insn = cc_use_insn; } @@ -3319,7 +3319,7 @@ try_combine (rtx_insn *i3, rtx_insn *i2, rtx_insn *i1, rtx_insn *i0, /* Just replace the CC reg with a new mode. */ SUBST (XEXP (*cc_use_loc, 0), newpat_dest); undobuf.other_insn = cc_use_insn; - } + } } /* Now we modify the current newpat: |