Initially forgotten-to-svn-add test case for r177279.

llvm-svn: 177280

1 files changed, 14 insertions, 0 deletions

diff --git a/llvm/test/Transforms/EarlyCSE/floatingpoint.ll b/llvm/test/Transforms/EarlyCSE/floatingpoint.ll
new file mode 100644
index 00000000000..2abecd74b63
--- /dev/null
+++ b/llvm/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
+}