Updating branches/google/stable to r178511stable

git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/google/stable@178655 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 30 insertions, 0 deletions

diff --git a/test/Transforms/MergeFunc/phi-speculation1.ll b/test/Transforms/MergeFunc/phi-speculation1.ll
new file mode 100644
index 0000000000..548e5102be
--- /dev/null
+++ b/test/Transforms/MergeFunc/phi-speculation1.ll
@@ -0,0 +1,30 @@
+; REQUIRES: asserts
+; RUN: opt < %s -mergefunc -stats -disable-output 2>&1 | not grep "functions merged"
+
+define i32 @foo1(i32 %x) {
+entry:
+  %A = add i32 %x, 1
+  %B = call i32 @foo1(i32 %A)
+  br label %loop
+loop:
+  %C = phi i32 [%B, %entry], [%D, %loop]
+  %D = add i32 %x, 2
+  %E = icmp ugt i32 %D, 10000
+  br i1 %E, label %loopexit, label %loop
+loopexit:
+  ret i32 %D
+}
+
+define i32 @foo2(i32 %x) {
+entry:
+  %0 = add i32 %x, 1
+  %1 = call i32 @foo2(i32 %0)
+  br label %loop
+loop:
+  %2 = phi i32 [%1, %entry], [%3, %loop]
+  %3 = add i32 %2, 2
+  %4 = icmp ugt i32 %3, 10000
+  br i1 %4, label %loopexit, label %loop
+loopexit:
+  ret i32 %3
+}