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authorSebastian Pop <s.pop@samsung.com>2015-08-28 20:36:58 (GMT)
committerSebastian Pop <s.pop@samsung.com>2015-08-28 21:47:04 (GMT)
commitfa0139c9969e54f37f0add025af87cc21b46ffcb (patch)
tree22bc0625401e4f1eb473c944b11bc9dadc48d2c2 /gcc-4.9/gcc/testsuite/gcc.dg
parentc39d2a2bd89ed7a9ff995f2fc1e2e693fab8ee9f (diff)
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backport patch to fix PR65048
PR tree-optimization/65048 * tree-ssa-threadupdate.c (valid_jump_thread_path): New. (thread_through_all_blocks): Call valid_jump_thread_path. Remove invalid FSM jump-thread paths. PR tree-optimization/65048 * gcc.dg/tree-ssa/ssa-dom-thread-9.c: New.
Diffstat (limited to 'gcc-4.9/gcc/testsuite/gcc.dg')
-rw-r--r--gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ssa-dom-thread-9.c50
1 files changed, 50 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ssa-dom-thread-9.c b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ssa-dom-thread-9.c
new file mode 100644
index 0000000..6be4203
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ssa-dom-thread-9.c
@@ -0,0 +1,50 @@
+/* PR 65048 */
+/* { dg-do compile } */
+/* { dg-options "-O3" } */
+
+int a, b, c, d;
+void fn (void);
+
+int
+foo (x)
+{
+ switch (x)
+ {
+ case 'A':
+ return 'T';
+ case 'U':
+ return 'A';
+ }
+}
+
+void
+bar (int x, int y)
+{
+ switch (c)
+ {
+ case 'U':
+ switch (x)
+ {
+ default:
+ fn ();
+ case 'G':
+ switch (y)
+ {
+ case 'A':
+ d = 7;
+ }
+ }
+ }
+}
+
+void
+baz (void)
+{
+ while (1)
+ {
+ a = foo ();
+ b = foo ();
+ bar (a, b);
+ }
+}
+