testsuite: Add testcase for PR that went latent in GCC 13 [PR107131]

The following testcase is probably latent since r13-3217-gc4d15dddf6b9e.
Adding testcase so that it doesn't silently reappear.

2023-01-13  Jakub Jelinek  <jakub@redhat.com>

	PR target/107131
	* gcc.dg/pr107131.c: New test.

diff --git a/gcc/testsuite/gcc.dg/pr107131.c b/gcc/testsuite/gcc.dg/pr107131.c
new file mode 100644 (file)
index 0000000..458b128
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr107131.c
@@ -0,0 +1,30 @@
+/* PR target/107131 */
+/* { dg-do run } */
+/* { dg-options "-Os -fno-ipa-vrp -fno-tree-bit-ccp -Wno-psabi" } */
+
+typedef unsigned char C;
+typedef unsigned long long __attribute__((__vector_size__ (32))) U;
+typedef unsigned long long __attribute__((__vector_size__ (64))) V;
+
+static __attribute__((__noclone__)) C
+foo (C o, U x, U y, U z)
+{
+  V a = __builtin_shufflevector (x, x, 3, 1, 3, 0, 0, 1, 1, 3);
+  V b = (V) { } >= o;
+  V c = b <= (V)(b >= (V) { 0, 0, 0, 0, 0, 0x90DF0BE3990AC871ULL });
+  U d = __builtin_shufflevector (y, z, 3, 1, 4, 5);
+  V e = a + c;
+  U f = ((union { V v; U u[2]; }) e).u[1] + d;
+  return ((union { U u; C c[32]; }) f).c[9];
+}
+
+int
+main ()
+{
+  if (__SIZEOF_LONG_LONG__ != 8 || __CHAR_BIT__ != 8)
+    return 0;
+  C x = foo (0, (U) { }, (U) { }, (U) { });
+  if (x != 0xff)
+    __builtin_abort();  
+  return 0;
+}