diff options
Diffstat (limited to 'gcc/simplify-rtx.c')
| -rw-r--r-- | gcc/simplify-rtx.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/gcc/simplify-rtx.c b/gcc/simplify-rtx.c index 132b3ab..f49f53d 100644 --- a/gcc/simplify-rtx.c +++ b/gcc/simplify-rtx.c @@ -2220,8 +2220,10 @@ simplify_relational_operation (code, mode, op0, op1) return const0_rtx; /* For modes without NaNs, if the two operands are equal, we know the - result. */ - if (!HONOR_NANS (GET_MODE (trueop0)) && rtx_equal_p (trueop0, trueop1)) + result except if they have side-effects. */ + if (! HONOR_NANS (GET_MODE (trueop0)) + && rtx_equal_p (trueop0, trueop1) + && ! side_effects_p (trueop0)) equal = 1, op0lt = 0, op0ltu = 0, op1lt = 0, op1ltu = 0; /* If the operands are floating-point constants, see if we can fold |