diff options
Diffstat (limited to 'gcc/config/rs6000/rs6000.c')
| -rw-r--r-- | gcc/config/rs6000/rs6000.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c index 848a4ef..46b7dec 100644 --- a/gcc/config/rs6000/rs6000.c +++ b/gcc/config/rs6000/rs6000.c @@ -14831,7 +14831,11 @@ rs6000_emit_p9_fp_minmax (rtx dest, rtx op, rtx true_cond, rtx false_cond) if (rtx_equal_p (op0, true_cond) && rtx_equal_p (op1, false_cond)) ; - else if (rtx_equal_p (op1, true_cond) && rtx_equal_p (op0, false_cond)) + /* Only when NaNs and signed-zeros are not in effect, smax could be + used for `op0 < op1 ? op1 : op0`, and smin could be used for + `op0 > op1 ? op1 : op0`. */ + else if (rtx_equal_p (op1, true_cond) && rtx_equal_p (op0, false_cond) + && !HONOR_NANS (compare_mode) && !HONOR_SIGNED_ZEROS (compare_mode)) max_p = !max_p; else |