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authorBen Cheng <bccheng@google.com>2014-03-25 22:37:19 -0700
committerBen Cheng <bccheng@google.com>2014-03-25 22:37:19 -0700
commit1bc5aee63eb72b341f506ad058502cd0361f0d10 (patch)
treec607e8252f3405424ff15bc2d00aa38dadbb2518 /gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/pta-ptrarith-1.c
parent283a0bf58fcf333c58a2a92c3ebbc41fb9eb1fdb (diff)
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Initial checkin of GCC 4.9.0 from trunk (r208799).
Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba
Diffstat (limited to 'gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/pta-ptrarith-1.c')
-rw-r--r--gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/pta-ptrarith-1.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/pta-ptrarith-1.c b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/pta-ptrarith-1.c
new file mode 100644
index 000000000..d4121122b
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/pta-ptrarith-1.c
@@ -0,0 +1,26 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fno-tree-forwprop -fno-tree-ccp -fdump-tree-ealias" } */
+
+extern void abort (void);
+struct X {
+ int *p;
+ int *q;
+ int *r;
+};
+int __attribute__((noinline))
+foo(int i, int j, int k, int off)
+{
+ struct X x;
+ int **p, *q;
+ x.p = &i;
+ x.q = &j;
+ x.r = &k;
+ p = &x.q;
+ p += 1;
+ /* *p points to { k } */
+ q = *p;
+ return *q;
+}
+
+/* { dg-final { scan-tree-dump "q_. = { k }" "ealias" } } */
+/* { dg-final { cleanup-tree-dump "ealias" } } */