[PATCH] Fix PR63738 testcase

[Richard Biener]

Committed.

Richard.

2014-12-01  Richard Biener  rguent...@suse.de

PR tree-optimization/63738
* gcc.dg/torture/pr63738.c: Fix call to setjmp.

Index: gcc/testsuite/gcc.dg/torture/pr63738.c
===
--- gcc/testsuite/gcc.dg/torture/pr63738.c  (revision 218140)
+++ gcc/testsuite/gcc.dg/torture/pr63738.c  (working copy)
@@ -16,7 +16,7 @@ extern long interprete()
   int n;
 
   struct longjmp_buffer raise_buf;
-  _setjmp (raise_buf.buf);
+  setjmp (raise_buf.buf);
 
   plouf();
   sp -= 4;

[PATCH] Fix PR63738

[Richard Biener]

I am testing the following (obvious) patch to avoid generating overlapping
life-ranges for SSA names that occur in abnormal PHIs.

Bootstrap and regtest running on x86_64-unknown-linux-gnu.

Richard.

2014-11-26  Richard Biener  rguent...@suse.de

PR middle-end/63738
* tree-data-ref.c (split_constant_offset_1): Do not follow
SSA edges for SSA names with SSA_NAME_OCCURS_IN_ABNORMAL_PHI.

* gcc.dg/torture/pr63738.c: New testcase.

Index: gcc/tree-data-ref.c
===
--- gcc/tree-data-ref.c (revision 218076)
+++ gcc/tree-data-ref.c (working copy)
@@ -674,6 +674,9 @@ split_constant_offset_1 (tree type, tree
 
 case SSA_NAME:
   {
+   if (SSA_NAME_OCCURS_IN_ABNORMAL_PHI (op0))
+ return false;
+
gimple def_stmt = SSA_NAME_DEF_STMT (op0);
enum tree_code subcode;
 
Index: gcc/testsuite/gcc.dg/torture/pr63738.c
===
--- gcc/testsuite/gcc.dg/torture/pr63738.c  (revision 0)
+++ gcc/testsuite/gcc.dg/torture/pr63738.c  (working copy)
@@ -0,0 +1,27 @@
+/*  { dg-do compile } */
+
+#include setjmp.h
+
+struct longjmp_buffer {
+  jmp_buf buf;
+};
+
+void plouf();
+
+extern long interprete()
+{
+  long * sp;
+  int i;
+  long *args;
+  int n;
+
+  struct longjmp_buffer raise_buf;
+  _setjmp (raise_buf.buf);
+
+  plouf();
+  sp -= 4;
+  for (i = 0; i  n; i++)
+args[i] = sp[10-i];
+  plouf();
+  return 0;
+}