[Bug middle-end/86511] [9 Regression] Unordered comparisons are expanded with branchless code

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86511

--- Comment #4 from Uroš Bizjak <ubizjak at gmail dot com> ---
This patch fixes inf-compare-[78].c testsuite failures on alphaev68 for me:

--cut here--
diff --git a/gcc/expmed.c b/gcc/expmed.c
index b01e1946898a..f114eb45e01f 100644
--- a/gcc/expmed.c
+++ b/gcc/expmed.c
@@ -6038,6 +6038,11 @@ emit_store_flag (rtx target, enum rtx_code code, rtx
op0, rtx op1,
       if (!HAVE_conditional_move)
        return 0;

+      /* Do not turn a trapping comparison into a non-trapping one.  */
+      if ((code != EQ && code != NE && code != UNEQ && code != LTGT)
+         && flag_trapping_math)
+       return 0;
+
       /* Try using a setcc instruction for ORDERED/UNORDERED, followed by a
         conditional move.  */
       tem = emit_store_flag_1 (subtarget, first_code, op0, op1, mode, 0,
--cut here--