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| author | Ulrich Weigand <uweigand@de.ibm.com> | 2003-10-17 13:36:48 +0000 |
|---|---|---|
| committer | Ulrich Weigand <uweigand@gcc.gnu.org> | 2003-10-17 13:36:48 +0000 |
| commit | 2051c897803c7632570b098abc8a2b8fb4c42144 (patch) | |
| tree | 535c53128775bc8275707387d0b3e0f1f2e28dfe /gcc/combine.c | |
| parent | b1177d691d174e4af10475798f9d12c6c93d003a (diff) | |
| download | gcc-2051c897803c7632570b098abc8a2b8fb4c42144.zip gcc-2051c897803c7632570b098abc8a2b8fb4c42144.tar.gz gcc-2051c897803c7632570b098abc8a2b8fb4c42144.tar.bz2 | |
combine.c (simplify_set): Do not clear out undobuf.other_insn already set elsewhere.
* combine.c (simplify_set): Do not clear out undobuf.other_insn
already set elsewhere.
From-SVN: r72602
Diffstat (limited to 'gcc/combine.c')
| -rw-r--r-- | gcc/combine.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/gcc/combine.c b/gcc/combine.c index cac585a..c36d922 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -5084,10 +5084,12 @@ simplify_set (rtx x) undobuf.other_insn. */ if (new_code != old_code) { + int other_changed_previously = other_changed; unsigned HOST_WIDE_INT mask; SUBST (*cc_use, gen_rtx_fmt_ee (new_code, GET_MODE (*cc_use), dest, const0_rtx)); + other_changed = 1; /* If the only change we made was to change an EQ into an NE or vice versa, OP0 has only one bit that might be nonzero, and OP1 @@ -5097,7 +5099,7 @@ simplify_set (rtx x) if (((old_code == NE && new_code == EQ) || (old_code == EQ && new_code == NE)) - && ! other_changed && op1 == const0_rtx + && ! other_changed_previously && op1 == const0_rtx && GET_MODE_BITSIZE (GET_MODE (op0)) <= HOST_BITS_PER_WIDE_INT && exact_log2 (mask = nonzero_bits (op0, GET_MODE (op0))) >= 0) { @@ -5107,13 +5109,11 @@ simplify_set (rtx x) && ! check_asm_operands (pat))) { PUT_CODE (*cc_use, old_code); - other_insn = 0; + other_changed = 0; op0 = gen_binary (XOR, GET_MODE (op0), op0, GEN_INT (mask)); } } - - other_changed = 1; } if (other_changed) |