On vxworks, isunordered is defined as a macro that ultimately calls a
_Fpcomp function, that GCC doesn't recognize as a builtin, so it
can't optimize accordingly.
Use __builtin_isunordered instead to get the desired code for the
test.
Regstrapped on x86_64-linux-gnu. Also tested on aarch64-vx7r2 with
gcc-12. Ok to install?
for gcc/testsuite/ChangeLog
* gcc.target/aarch64/pred-not-gen-4.c: Drop math.h include,
call builtin.
---
.../gcc.target/aarch64/sve/pred-not-gen-4.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/gcc/testsuite/gcc.target/aarch64/sve/pred-not-gen-4.c
b/gcc/testsuite/gcc.target/aarch64/sve/pred-not-gen-4.c
index 0001dd3fc211f..1845bd3f0f704 100644
--- a/gcc/testsuite/gcc.target/aarch64/sve/pred-not-gen-4.c
+++ b/gcc/testsuite/gcc.target/aarch64/sve/pred-not-gen-4.c
@@ -1,12 +1,10 @@
/* { dg-do compile } */
/* { dg-options "-O3" } */
-#include <math.h>
-
void f13(double * restrict z, double * restrict w, double * restrict x, double
* restrict y, int n)
{
for (int i = 0; i < n; i++) {
- z[i] = (isunordered(w[i], 0)) ? x[i] + w[i] : y[i] - w[i];
+ z[i] = (__builtin_isunordered(w[i], 0)) ? x[i] + w[i] : y[i] - w[i];
}
}
--
Alexandre Oliva, happy hacker https://FSFLA.org/blogs/lxo/
Free Software Activist GNU Toolchain Engineer
Disinformation flourishes because many people care deeply about injustice
but very few check the facts. Ask me about <https://stallmansupport.org>
