Merge branch 'master' into gfortran-testdevel/gfortran-test

1 files changed, 28 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/tree-ssa/copy-prop-aggregate-zero-1.c b/gcc/testsuite/gcc.dg/tree-ssa/copy-prop-aggregate-zero-1.c
new file mode 100644
index 0000000..577a5b5
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/copy-prop-aggregate-zero-1.c
@@ -0,0 +1,28 @@
+/* { dg-do compile } */ 
+/* { dg-options "-O1 -fno-tree-sra -fdump-tree-optimized -fdump-tree-forwprop1-details" } */
+
+extern void link_error (void);
+
+/* Check for copyprop on structs with zeroing.  */
+#define vector16 __attribute__((vector_size(64)))
+
+struct g
+{
+  vector16 unsigned char t;
+};
+
+struct g f(void)
+{
+  struct g temp_struct1 ;
+  temp_struct1.t = (vector16 unsigned char){};
+  struct g temp_struct2 = temp_struct1;
+  struct g temp_struct3 = temp_struct2;
+  struct g temp_struct4 = temp_struct3;
+  return temp_struct4;
+}
+
+/* There should be no references to any of "temp_struct*"
+   temporaries.  */
+/* { dg-final { scan-tree-dump-times "temp_struct" 0 "optimized" } } */
+/* Also check that forwprop pass did the copy prop. */
+/* { dg-final { scan-tree-dump-times "after previous" 4 "forwprop1" } } */