diff gcc/testsuite/gcc.dg/vect/vect-live-slp-3.c @ 111:04ced10e8804

gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
parents
children 84e7813d76e9
line wrap: on
line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/vect/vect-live-slp-3.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,73 @@
+/* { dg-require-effective-target vect_long } */
+/* { dg-additional-options "-fno-tree-scev-cprop" } */
+
+#include "tree-vect.h"
+
+/* Statement in SLP vectorization used outside the loop.
+   NOTE: SCEV disabled to ensure the live operation is not removed before
+   vectorization.  */
+#define LIVELOOP(RET) \
+__attribute__ ((noinline)) long \
+liveloop##RET (int n, long *x, long *y) \
+{ \
+  long n0, n1, n2, n3; \
+  int j; \
+  for (j = 0; j < n; ++j) \
+    { \
+      n0 = x[(j*4)]; \
+      n1 = x[(j*4)+1]; \
+      n2 = x[(j*4)+2]; \
+      n3 = x[(j*4)+3]; \
+      y[(j*4)] = n0 + 1; \
+      y[(j*4)+1] = n1 + 2; \
+      y[(j*4)+2] = n2 + 3; \
+      y[(j*4)+3] = n3 + 4; \
+    } \
+  return n##RET; \
+}
+
+LIVELOOP (0)
+LIVELOOP (1)
+LIVELOOP (2)
+LIVELOOP (3)
+typedef long (*FP)(int n, long *x, long *y);
+const FP llf[]= {&liveloop0, &liveloop1, &liveloop2, &liveloop3};
+
+#define MAX 153
+
+int
+main (void)
+{
+  long a[MAX*4];
+  long b[MAX*4];
+  int i;
+
+  check_vect ();
+
+  for (i=0; i<MAX*4; i++)
+    {
+      __asm__ volatile ("");
+      a[i] = i;
+    }
+
+  for (i=0; i<4; i++)
+    {
+      __asm__ volatile ("");
+
+      int ret = llf[i] (MAX, a, b);
+
+      if (ret != (MAX * 4) - 4 + i)
+	abort ();
+
+      for (i=0; i<MAX*4; i++)
+	{
+	  __asm__ volatile ("");
+	  if (b[i] != i + (i%4) + 1)
+	    abort ();
+	}
+    }
+}
+
+/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 4 "vect" } } */
+/* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 4 "vect" } } */
+/* { dg-final { scan-tree-dump-times "vec_stmt_relevant_p: stmt live but not relevant" 4 "vect" } } */