diff options
Diffstat (limited to 'gcc/combine.c')
| -rw-r--r-- | gcc/combine.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/gcc/combine.c b/gcc/combine.c index 99fe499..8d578eb 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -7313,11 +7313,17 @@ known_cond (x, cond, reg, val) if (rtx_equal_p (XEXP (x, 0), reg) && rtx_equal_p (XEXP (x, 1), val)) { if (GET_RTX_CLASS (code) == '<') - return (comparison_dominates_p (cond, code) ? const_true_rtx - : (comparison_dominates_p (cond, - reverse_condition (code)) - ? const0_rtx : x)); + { + if (comparison_dominates_p (cond, code)) + return const_true_rtx; + code = reverse_condition (code); + if (code != UNKNOWN + && comparison_dominates_p (cond, code)) + return const0_rtx; + else + return x; + } else if (code == SMAX || code == SMIN || code == UMIN || code == UMAX) { @@ -10852,7 +10858,8 @@ reversible_comparison_p (x) { if (TARGET_FLOAT_FORMAT != IEEE_FLOAT_FORMAT || flag_fast_math - || GET_CODE (x) == NE || GET_CODE (x) == EQ) + || GET_CODE (x) == NE || GET_CODE (x) == EQ + || GET_CODE (x) == UNORDERED || GET_CODE (x) == ORDERED) return 1; switch (GET_MODE_CLASS (GET_MODE (XEXP (x, 0)))) |