rs6000/test: Adjust some test cases on partial vector [PR96373]

As Richard pointed out in [1] and the testing on Power10, the
proposed fix for PR96373 requires some updates on a few rs6000
test cases which adopt partial vector.  This patch is to fix
all of them with one extra option "-fno-trapping-math" as
Richard suggested.

Besides, the original test case also failed on Power10 without
Richard's proposed fix, this patch adds it together for a bit
better testing coverage.

[1] https://gcc.gnu.org/pipermail/gcc-patches/2023-January/610728.html

	PR target/96373

gcc/testsuite/ChangeLog:

	* gcc.target/powerpc/p9-vec-length-epil-1.c: Add -fno-trapping-math.
	* gcc.target/powerpc/p9-vec-length-epil-2.c: Likewise.
	* gcc.target/powerpc/p9-vec-length-epil-3.c: Likewise.
	* gcc.target/powerpc/p9-vec-length-epil-4.c: Likewise.
	* gcc.target/powerpc/p9-vec-length-epil-5.c: Likewise.
	* gcc.target/powerpc/p9-vec-length-epil-6.c: Likewise.
	* gcc.target/powerpc/p9-vec-length-epil-8.c: Likewise.
	* gcc.target/powerpc/p9-vec-length-full-1.c: Likewise.
	* gcc.target/powerpc/p9-vec-length-full-2.c: Likewise.
	* gcc.target/powerpc/p9-vec-length-full-3.c: Likewise.
	* gcc.target/powerpc/p9-vec-length-full-4.c: Likewise.
	* gcc.target/powerpc/p9-vec-length-full-5.c: Likewise.
	* gcc.target/powerpc/p9-vec-length-full-6.c: Likewise.
	* gcc.target/powerpc/p9-vec-length-full-8.c: Likewise.
	* gcc.target/powerpc/pr96373.c: New test.

15 files changed, 45 insertions, 14 deletions

diff --git a/gcc/testsuite/gcc.target/powerpc/p9-vec-length-epil-1.c b/gcc/testsuite/gcc.target/powerpc/p9-vec-length-epil-1.c
index d248f09..dfcc0e9 100644
--- a/gcc/testsuite/gcc.target/powerpc/p9-vec-length-epil-1.c
+++ b/gcc/testsuite/gcc.target/powerpc/p9-vec-length-epil-1.c
@@ -1,5 +1,5 @@
 /* { dg-do compile { target { lp64 && powerpc_p9vector_ok } } } */
-/* { dg-options "-mdejagnu-cpu=power9 -O2 -ftree-vectorize -fno-vect-cost-model -fno-unroll-loops" } */
+/* { dg-options "-mdejagnu-cpu=power9 -O2 -ftree-vectorize -fno-vect-cost-model -fno-unroll-loops -fno-trapping-math" } */
 
 /* { dg-additional-options "--param=vect-partial-vector-usage=1" } */
 
diff --git a/gcc/testsuite/gcc.target/powerpc/p9-vec-length-epil-2.c b/gcc/testsuite/gcc.target/powerpc/p9-vec-length-epil-2.c
index 9f78a44..e63f1bf 100644
--- a/gcc/testsuite/gcc.target/powerpc/p9-vec-length-epil-2.c
+++ b/gcc/testsuite/gcc.target/powerpc/p9-vec-length-epil-2.c
@@ -1,5 +1,5 @@
 /* { dg-do compile { target { lp64 && powerpc_p9vector_ok } } } */
-/* { dg-options "-mdejagnu-cpu=power9 -O2 -ftree-vectorize -fno-vect-cost-model -fno-unroll-loops" } */
+/* { dg-options "-mdejagnu-cpu=power9 -O2 -ftree-vectorize -fno-vect-cost-model -fno-unroll-loops -fno-trapping-math" } */
 
 /* { dg-additional-options "--param=vect-partial-vector-usage=1" } */
 
diff --git a/gcc/testsuite/gcc.target/powerpc/p9-vec-length-epil-3.c b/gcc/testsuite/gcc.target/powerpc/p9-vec-length-epil-3.c
index a08797f..4a99e3a 100644
--- a/gcc/testsuite/gcc.target/powerpc/p9-vec-length-epil-3.c
+++ b/gcc/testsuite/gcc.target/powerpc/p9-vec-length-epil-3.c
@@ -1,5 +1,5 @@
 /* { dg-do compile { target { lp64 && powerpc_p9vector_ok } } } */
-/* { dg-options "-mdejagnu-cpu=power9 -O2 -ftree-vectorize -fno-vect-cost-model -fno-unroll-loops" } */
+/* { dg-options "-mdejagnu-cpu=power9 -O2 -ftree-vectorize -fno-vect-cost-model -fno-unroll-loops -fno-trapping-math" } */
 
 /* { dg-additional-options "--param=vect-partial-vector-usage=1" } */
 
diff --git a/gcc/testsuite/gcc.target/powerpc/p9-vec-length-epil-4.c b/gcc/testsuite/gcc.target/powerpc/p9-vec-length-epil-4.c
index ad051fb..9fbee6a 100644
--- a/gcc/testsuite/gcc.target/powerpc/p9-vec-length-epil-4.c
+++ b/gcc/testsuite/gcc.target/powerpc/p9-vec-length-epil-4.c
@@ -1,5 +1,5 @@
 /* { dg-do compile { target { lp64 && powerpc_p9vector_ok } } } */
-/* { dg-options "-mdejagnu-cpu=power9 -O2 -ftree-vectorize -fno-vect-cost-model -fno-unroll-loops" } */
+/* { dg-options "-mdejagnu-cpu=power9 -O2 -ftree-vectorize -fno-vect-cost-model -fno-unroll-loops -fno-trapping-math" } */
 
 /* { dg-additional-options "--param=vect-partial-vector-usage=1" } */
 
diff --git a/gcc/testsuite/gcc.target/powerpc/p9-vec-length-epil-5.c b/gcc/testsuite/gcc.target/powerpc/p9-vec-length-epil-5.c
index a24c30fe..d023a99 100644
--- a/gcc/testsuite/gcc.target/powerpc/p9-vec-length-epil-5.c
+++ b/gcc/testsuite/gcc.target/powerpc/p9-vec-length-epil-5.c
@@ -1,5 +1,5 @@
 /* { dg-do compile { target { lp64 && powerpc_p9vector_ok } } } */
-/* { dg-options "-mdejagnu-cpu=power9 -O2 -ftree-vectorize -fno-vect-cost-model -fno-unroll-loops" } */
+/* { dg-options "-mdejagnu-cpu=power9 -O2 -ftree-vectorize -fno-vect-cost-model -fno-unroll-loops -fno-trapping-math" } */
 
 /* { dg-additional-options "--param=vect-partial-vector-usage=1" } */
 
diff --git a/gcc/testsuite/gcc.target/powerpc/p9-vec-length-epil-6.c b/gcc/testsuite/gcc.target/powerpc/p9-vec-length-epil-6.c
index 4eaeb3b..dbce907 100644
--- a/gcc/testsuite/gcc.target/powerpc/p9-vec-length-epil-6.c
+++ b/gcc/testsuite/gcc.target/powerpc/p9-vec-length-epil-6.c
@@ -1,5 +1,5 @@
 /* { dg-do compile { target { lp64 && powerpc_p9vector_ok } } } */
-/* { dg-options "-mdejagnu-cpu=power9 -O2 -ftree-vectorize -fno-vect-cost-model -fno-unroll-loops" } */
+/* { dg-options "-mdejagnu-cpu=power9 -O2 -ftree-vectorize -fno-vect-cost-model -fno-unroll-loops -fno-trapping-math" } */
 
 /* { dg-additional-options "--param=vect-partial-vector-usage=1" } */
 
diff --git a/gcc/testsuite/gcc.target/powerpc/p9-vec-length-epil-8.c b/gcc/testsuite/gcc.target/powerpc/p9-vec-length-epil-8.c
index 8b9c910..e56fd55 100644
--- a/gcc/testsuite/gcc.target/powerpc/p9-vec-length-epil-8.c
+++ b/gcc/testsuite/gcc.target/powerpc/p9-vec-length-epil-8.c
@@ -1,5 +1,5 @@
 /* { dg-do compile { target { lp64 && powerpc_p9vector_ok } } } */
-/* { dg-options "-mdejagnu-cpu=power9 -O2 -ftree-vectorize -fno-vect-cost-model -fno-unroll-loops" } */
+/* { dg-options "-mdejagnu-cpu=power9 -O2 -ftree-vectorize -fno-vect-cost-model -fno-unroll-loops -fno-trapping-math" } */
 
 /* { dg-additional-options "--param=vect-partial-vector-usage=1" } */
 
diff --git a/gcc/testsuite/gcc.target/powerpc/p9-vec-length-full-1.c b/gcc/testsuite/gcc.target/powerpc/p9-vec-length-full-1.c
index 3336752..f01f1c5 100644
--- a/gcc/testsuite/gcc.target/powerpc/p9-vec-length-full-1.c
+++ b/gcc/testsuite/gcc.target/powerpc/p9-vec-length-full-1.c
@@ -1,5 +1,5 @@
 /* { dg-do compile { target { lp64 && powerpc_p9vector_ok } } } */
-/* { dg-options "-mdejagnu-cpu=power9 -O2 -ftree-vectorize -fno-vect-cost-model -fno-unroll-loops" } */
+/* { dg-options "-mdejagnu-cpu=power9 -O2 -ftree-vectorize -fno-vect-cost-model -fno-unroll-loops -fno-trapping-math" } */
 
 /* { dg-additional-options "--param=vect-partial-vector-usage=2" } */
 
diff --git a/gcc/testsuite/gcc.target/powerpc/p9-vec-length-full-2.c b/gcc/testsuite/gcc.target/powerpc/p9-vec-length-full-2.c
index 98abf8b..f546e97 100644
--- a/gcc/testsuite/gcc.target/powerpc/p9-vec-length-full-2.c
+++ b/gcc/testsuite/gcc.target/powerpc/p9-vec-length-full-2.c
@@ -1,5 +1,5 @@
 /* { dg-do compile { target { lp64 && powerpc_p9vector_ok } } } */
-/* { dg-options "-mdejagnu-cpu=power9 -O2 -ftree-vectorize -fno-vect-cost-model -fno-unroll-loops" } */
+/* { dg-options "-mdejagnu-cpu=power9 -O2 -ftree-vectorize -fno-vect-cost-model -fno-unroll-loops -fno-trapping-math" } */
 
 /* { dg-additional-options "--param=vect-partial-vector-usage=2" } */
 
diff --git a/gcc/testsuite/gcc.target/powerpc/p9-vec-length-full-3.c b/gcc/testsuite/gcc.target/powerpc/p9-vec-length-full-3.c
index 0881d1a..65142b3 100644
--- a/gcc/testsuite/gcc.target/powerpc/p9-vec-length-full-3.c
+++ b/gcc/testsuite/gcc.target/powerpc/p9-vec-length-full-3.c
@@ -1,5 +1,5 @@
 /* { dg-do compile { target { lp64 && powerpc_p9vector_ok } } } */
-/* { dg-options "-mdejagnu-cpu=power9 -O2 -ftree-vectorize -fno-vect-cost-model -fno-unroll-loops" } */
+/* { dg-options "-mdejagnu-cpu=power9 -O2 -ftree-vectorize -fno-vect-cost-model -fno-unroll-loops -fno-trapping-math" } */
 
 /* { dg-additional-options "--param=vect-partial-vector-usage=2" } */
 
diff --git a/gcc/testsuite/gcc.target/powerpc/p9-vec-length-full-4.c b/gcc/testsuite/gcc.target/powerpc/p9-vec-length-full-4.c
index 8ce3dc1..a4cc7aa 100644
--- a/gcc/testsuite/gcc.target/powerpc/p9-vec-length-full-4.c
+++ b/gcc/testsuite/gcc.target/powerpc/p9-vec-length-full-4.c
@@ -1,5 +1,5 @@
 /* { dg-do compile { target { lp64 && powerpc_p9vector_ok } } } */
-/* { dg-options "-mdejagnu-cpu=power9 -O2 -ftree-vectorize -fno-vect-cost-model -fno-unroll-loops" } */
+/* { dg-options "-mdejagnu-cpu=power9 -O2 -ftree-vectorize -fno-vect-cost-model -fno-unroll-loops -fno-trapping-math" } */
 
 /* { dg-additional-options "--param=vect-partial-vector-usage=2" } */
 
diff --git a/gcc/testsuite/gcc.target/powerpc/p9-vec-length-full-5.c b/gcc/testsuite/gcc.target/powerpc/p9-vec-length-full-5.c
index f9f58ba..4b0b907 100644
--- a/gcc/testsuite/gcc.target/powerpc/p9-vec-length-full-5.c
+++ b/gcc/testsuite/gcc.target/powerpc/p9-vec-length-full-5.c
@@ -1,5 +1,5 @@
 /* { dg-do compile { target { lp64 && powerpc_p9vector_ok } } } */
-/* { dg-options "-mdejagnu-cpu=power9 -O2 -ftree-vectorize -fno-vect-cost-model -fno-unroll-loops" } */
+/* { dg-options "-mdejagnu-cpu=power9 -O2 -ftree-vectorize -fno-vect-cost-model -fno-unroll-loops -fno-trapping-math" } */
 
 /* { dg-additional-options "--param=vect-partial-vector-usage=2" } */
 
diff --git a/gcc/testsuite/gcc.target/powerpc/p9-vec-length-full-6.c b/gcc/testsuite/gcc.target/powerpc/p9-vec-length-full-6.c
index 5d2357a..65ddf2b 100644
--- a/gcc/testsuite/gcc.target/powerpc/p9-vec-length-full-6.c
+++ b/gcc/testsuite/gcc.target/powerpc/p9-vec-length-full-6.c
@@ -1,5 +1,5 @@
 /* { dg-do compile { target { lp64 && powerpc_p9vector_ok } } } */
-/* { dg-options "-mdejagnu-cpu=power9 -O2 -ftree-vectorize -fno-vect-cost-model -fno-unroll-loops" } */
+/* { dg-options "-mdejagnu-cpu=power9 -O2 -ftree-vectorize -fno-vect-cost-model -fno-unroll-loops -fno-trapping-math" } */
 
 /* { dg-additional-options "--param=vect-partial-vector-usage=2" } */
 
diff --git a/gcc/testsuite/gcc.target/powerpc/p9-vec-length-full-8.c b/gcc/testsuite/gcc.target/powerpc/p9-vec-length-full-8.c
index 1fc2af1..7fe0dd0 100644
--- a/gcc/testsuite/gcc.target/powerpc/p9-vec-length-full-8.c
+++ b/gcc/testsuite/gcc.target/powerpc/p9-vec-length-full-8.c
@@ -1,5 +1,5 @@
 /* { dg-do compile { target { lp64 && powerpc_p9vector_ok } } } */
-/* { dg-options "-mdejagnu-cpu=power9 -O2 -ftree-vectorize -fno-vect-cost-model -fno-unroll-loops" } */
+/* { dg-options "-mdejagnu-cpu=power9 -O2 -ftree-vectorize -fno-vect-cost-model -fno-unroll-loops -fno-trapping-math" } */
 
 /* { dg-additional-options "--param=vect-partial-vector-usage=2" } */
 
diff --git a/gcc/testsuite/gcc.target/powerpc/pr96373.c b/gcc/testsuite/gcc.target/powerpc/pr96373.c
new file mode 100644
index 0000000..f0471b6
--- /dev/null
+++ b/gcc/testsuite/gcc.target/powerpc/pr96373.c
@@ -0,0 +1,31 @@
+/* { dg-do run { target { powerpc*-*-linux* } } } */
+/* { dg-options "-O2 -ftree-vectorize" } */
+
+/* Verify it can run successfully, especially on Power10 and later.   */
+
+#define _GNU_SOURCE
+#include <fenv.h>
+
+__attribute__ ((noipa)) void
+div (double *d, double *s, int n)
+{
+  for (; n; n--, d++, s++)
+    *d = *d / *s;
+}
+
+int main()
+{
+  double d[] = {1,2,3,4,5,6,7,8,9,10,11};
+  double s[] = {11,10,9,8,7,6,5,4,3,2,1};
+
+  feenableexcept(FE_DIVBYZERO|FE_INVALID);
+  div(d, s, 11);
+
+  int i;
+  for (i = 0; i < 11; i++)
+    __builtin_printf(" %f", d[i]);
+
+  __builtin_printf("\n");
+
+  return 0;
+}