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| author | uweigand <uweigand@138bc75d-0d04-0410-961f-82ee72b054a4> | 2005-08-16 02:01:27 +0000 |
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| committer | uweigand <uweigand@138bc75d-0d04-0410-961f-82ee72b054a4> | 2005-08-16 02:01:27 +0000 |
| commit | a6d172351baf937eb1c5d59f03bf375826d2ea2f (patch) | |
| tree | d52536bec4c05305394b57881adc3110a3ce1cc5 /gcc/simplify-rtx.c | |
| parent | c988bb4e1e5afdf744a6aa65ff00db69d30f038d (diff) | |
| download | gcc-a6d172351baf937eb1c5d59f03bf375826d2ea2f.tar.gz | |
* simplify-rtx.c (simplify_const_relational_operation): When
extracting arguments of a COMPARE, recompute the mode as well.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@103143 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/simplify-rtx.c')
| -rw-r--r-- | gcc/simplify-rtx.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/gcc/simplify-rtx.c b/gcc/simplify-rtx.c index e3e29991af8..ca9d9dab4a5 100644 --- a/gcc/simplify-rtx.c +++ b/gcc/simplify-rtx.c @@ -3014,7 +3014,17 @@ simplify_const_relational_operation (enum rtx_code code, /* If op0 is a compare, extract the comparison arguments from it. */ if (GET_CODE (op0) == COMPARE && op1 == const0_rtx) - op1 = XEXP (op0, 1), op0 = XEXP (op0, 0); + { + op1 = XEXP (op0, 1); + op0 = XEXP (op0, 0); + + if (GET_MODE (op0) != VOIDmode) + mode = GET_MODE (op0); + else if (GET_MODE (op1) != VOIDmode) + mode = GET_MODE (op1); + else + return 0; + } /* We can't simplify MODE_CC values since we don't know what the actual comparison is. */ |