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, 14 insertions, 0 deletions

diff --git a/test/Transforms/EarlyCSE/floatingpoint.ll b/test/Transforms/EarlyCSE/floatingpoint.ll
new file mode 100644
index 0000000000..2abecd74b6
--- /dev/null
+++ b/test/Transforms/EarlyCSE/floatingpoint.ll
@@ -0,0 +1,14 @@
+; RUN: opt < %s -S -early-cse | FileCheck %s
+
+; Ensure we don't simplify away additions vectors of +0.0's (same as scalars).
+define <4 x float> @fV( <4 x float> %a) {
+       ; CHECK: %b = fadd <4 x float> %a, zeroinitializer
+       %b = fadd  <4 x float> %a, <float 0.0,float 0.0,float 0.0,float 0.0>
+       ret <4 x float> %b
+}
+
+define <4 x float> @fW( <4 x float> %a) {
+       ; CHECK: ret <4 x float> %a
+       %b = fadd  <4 x float> %a, <float -0.0,float -0.0,float -0.0,float -0.0>
+       ret <4 x float> %b
+}