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| author | Richard Kenner <kenner@gcc.gnu.org> | 1995-10-03 13:58:18 -0400 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 1995-10-03 13:58:18 -0400 |
| commit | 15448afcc8d3fb975a4f1b2dec1e2a5f00279ab1 (patch) | |
| tree | 4a1f7fafeadc37860167f15aa725808f6515c6c2 /gcc | |
| parent | 15a7a8ec1ca0f604648b545b6603d3eae9f8185f (diff) | |
| download | gcc-15448afcc8d3fb975a4f1b2dec1e2a5f00279ab1.zip gcc-15448afcc8d3fb975a4f1b2dec1e2a5f00279ab1.tar.gz gcc-15448afcc8d3fb975a4f1b2dec1e2a5f00279ab1.tar.bz2 | |
(simplify_rtx): In code that attempts to simplify conditional expressions...
(simplify_rtx): In code that attempts to simplify conditional
expressions, if the result is an NE around another comparison, return
the original expression.
From-SVN: r10428
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/combine.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/gcc/combine.c b/gcc/combine.c index aa30445..8e46de0 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -3057,6 +3057,9 @@ simplify_rtx (x, op0_mode, last, in_dest) rtx cop1 = const0_rtx; enum rtx_code cond_code = simplify_comparison (NE, &cond, &cop1); + if (cond_code == NE && GET_RTX_CLASS (GET_CODE (cond)) == '<') + return x; + /* Simplify the alternative arms; this may collapse the true and false arms to store-flag values. */ true = subst (true, pc_rtx, pc_rtx, 0, 0); |