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| author | Geoffrey Keating <geoffk@redhat.com> | 2001-01-14 10:39:49 +0000 |
|---|---|---|
| committer | Geoffrey Keating <geoffk@gcc.gnu.org> | 2001-01-14 10:39:49 +0000 |
| commit | aa6683f7f16af36263b28faf4cfc947cf4304c97 (patch) | |
| tree | caf19a4bf9883cf30f48c46a4ee9758d16695234 /gcc/combine.c | |
| parent | fce7e199d55908fa9fcaf9613b8f08da0fdcdece (diff) | |
| download | gcc-aa6683f7f16af36263b28faf4cfc947cf4304c97.zip gcc-aa6683f7f16af36263b28faf4cfc947cf4304c97.tar.gz gcc-aa6683f7f16af36263b28faf4cfc947cf4304c97.tar.bz2 | |
combine.c (simplify_comparison): Don't change `code' when can't reverse comparison.
* combine.c (simplify_comparison): Don't change `code' when
can't reverse comparison.
From-SVN: r39007
Diffstat (limited to 'gcc/combine.c')
| -rw-r--r-- | gcc/combine.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/gcc/combine.c b/gcc/combine.c index 055cfc3..30b13c8 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -10710,13 +10710,19 @@ simplify_comparison (code, pop0, pop1) && (STORE_FLAG_VALUE & (((HOST_WIDE_INT) 1 << (GET_MODE_BITSIZE (GET_MODE (op0)) - 1)))) - && (code == LT || (code == GE)))) + && (code == LT || code == GE))) { - code = (code == LT || code == NE - ? GET_CODE (op0) : combine_reversed_comparison_code (op0)); - if (code != UNKNOWN) + enum rtx_code new_code; + if (code == LT || code == NE) + new_code = GET_CODE (op0); + else + new_code = combine_reversed_comparison_code (op0); + + if (new_code != UNKNOWN) { - op0 = tem, op1 = tem1; + code = new_code; + op0 = tem; + op1 = tem1; continue; } } |