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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/vrp08.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/vrp08.c')
-rw-r--r--gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/vrp08.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/vrp08.c b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/vrp08.c
new file mode 100644
index 0000000..193199f
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/vrp08.c
@@ -0,0 +1,24 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fno-tree-fre -fdump-tree-vrp1-details" } */
+
+/* Compile with -fno-tree-fre -O2 to prevent CSEing *p. */
+foo (int a, int *p)
+{
+ int x = *p + 2;
+ int y = *p - 1;
+ int z = *p + 9;
+
+ /* This should be folded to if (1), but only one ASSERT_EXPR should
+ be inserted. */
+ if (p)
+ a = x + y + z;
+ else
+ a = x - y;
+
+ return a;
+}
+/* Target with fno-delete-null-pointer-checks should not fold checks */
+/* { dg-final { scan-tree-dump-times "Folding predicate p_.*to 1" 1 "vrp1" { target { ! keeps_null_pointer_checks } } } } */
+/* { dg-final { scan-tree-dump-times "PREDICATE: p_.* ne_expr 0" 1 "vrp1" { target { ! keeps_null_pointer_checks } } } } */
+/* { dg-final { scan-tree-dump-times "Folding predicate p_.*to 1" 0 "vrp1" { target { keeps_null_pointer_checks } } } } */
+/* { dg-final { cleanup-tree-dump "vrp1" } } */