1 files changed, 49 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/prefetch-7.c b/gcc/testsuite/gcc.dg/tree-ssa/prefetch-7.c
new file mode 100644
index 000000000..9e453a7c0
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/prefetch-7.c
@@ -0,0 +1,49 @@
+/* { dg-do compile { target i?86-*-* x86_64-*-* } } */
+/* { dg-require-effective-target ilp32 } */
+/* { dg-require-effective-target sse2 } */
+/* { dg-skip-if "" { i?86-*-* x86_64-*-* } { "-march=*" } { "-march=athlon" } } */
+/* { dg-options "-O2 -fprefetch-loop-arrays -march=athlon -msse2 -mfpmath=sse --param simultaneous-prefetches=100 -fdump-tree-aprefetch-details -fdump-tree-optimized" } */
+
+#define K 1000000
+int a[K];
+
+void test(int *p)
+{
+  unsigned i;
+
+  /* Nontemporal store should not be used here (only write and read temporal
+     prefetches).  */
+  for (i = 0; i < K - 10000; i++)
+    a[i + 10000] = a[i];
+
+  /* Nontemporal store should not be used here (only write and read nontemporal
+     prefetches).  */
+  for (i = 0; i < K - 100000; i++)
+    a[i + 100000] = a[i];
+
+  /* Nontemporal store should be used neither for a nor for p, as we do not know
+     whether they alias or not.  */
+  for (i = 0; i < K; i++)
+    {
+      a[i] = 0;
+      *p++ = 1;
+    }
+
+  /* Nontemporal store should not be used for a, as we do not know whether its
+     value will be reused or not.  */
+  for (i = 0; i < 1000; i++)
+    a[i] = 0;
+}
+
+/* { dg-final { scan-tree-dump-times "Issued prefetch" 5 "aprefetch" } } */
+/* { dg-final { scan-tree-dump-times "Issued nontemporal prefetch" 2 "aprefetch" } } */
+/* { dg-final { scan-tree-dump-times "a nontemporal store" 0 "aprefetch" } } */
+
+/* { dg-final { scan-tree-dump-times "builtin_prefetch" 7 "optimized" } } */
+
+/* { dg-final { scan-assembler-times "prefetchw" 5 } } */
+/* { dg-final { scan-assembler-times "prefetcht" 1 } } */
+/* { dg-final { scan-assembler-times "prefetchnta" 1 } } */
+
+/* { dg-final { cleanup-tree-dump "aprefetch" } } */
+/* { dg-final { cleanup-tree-dump "optimized" } } */