[PATCH] rs6000/test: Adjust pr104992.c with vect_int_mod [PR106516]

["Kewen.Lin" <linkw@linux.ibm.com>]

Hi,

As PR106516 shows, we can get unexpected gimple outputs for
function thud on some target which supports modulus operation
for vector int.  This patch introduces one effective target
vect_int_mod for it, then adjusts the test case with it.

Tested on x86_64-redhat-linux and powerpc64{,le}-linux-gnu,
especially powerpc64le Power10.

Is it ok for trunk?

BR,
Kewen
-----
	PR testsuite/106516

gcc/testsuite/ChangeLog:

	* gcc.dg/pr104992.c: Adjust with vect_int_mod.
	* lib/target-supports.exp (check_effective_target_vect_int_mod): New
	proc for effective target vect_int_mod.
---
 gcc/testsuite/gcc.dg/pr104992.c       | 3 ++-
 gcc/testsuite/lib/target-supports.exp | 8 ++++++++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/gcc/testsuite/gcc.dg/pr104992.c b/gcc/testsuite/gcc.dg/pr104992.c
index 217c89a458c..82f8c75559c 100644
--- a/gcc/testsuite/gcc.dg/pr104992.c
+++ b/gcc/testsuite/gcc.dg/pr104992.c
@@ -54,4 +54,5 @@ __attribute__((noipa)) unsigned waldo (unsigned x, unsigned y, unsigned z) {
     return x / y * z == x;
 }

-/* { dg-final {scan-tree-dump-times " % " 9 "optimized" } } */
+/* { dg-final { scan-tree-dump-times " % " 9 "optimized" { target { ! vect_int_mod } } } } */
+/* { dg-final { scan-tree-dump-times " % " 6 "optimized" { target vect_int_mod } } } */
diff --git a/gcc/testsuite/lib/target-supports.exp b/gcc/testsuite/lib/target-supports.exp
index 04a2a8e8659..a4bdd23bed0 100644
--- a/gcc/testsuite/lib/target-supports.exp
+++ b/gcc/testsuite/lib/target-supports.exp
@@ -8239,6 +8239,14 @@ proc check_effective_target_vect_long_mult { } {
     return $answer
 }

+# Return 1 if the target supports vector int modulus, 0 otherwise.
+
+proc check_effective_target_vect_int_mod { } {
+    return [check_cached_effective_target_indexed vect_int_mod {
+      expr { [istarget powerpc*-*-*]
+	     && [check_effective_target_power10_ok] }}]
+}
+
 # Return 1 if the target supports vector even/odd elements extraction, 0 otherwise.

 proc check_effective_target_vect_extract_even_odd { } {
--
2.27.0