Add a couple of missed optimizations on integer vectors. Multiply and divide

by 1, as well as multiply by -1.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60182 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 11 insertions, 0 deletions

diff --git a/test/Transforms/InstCombine/2008-11-27-MultiplyIntVec.ll b/test/Transforms/InstCombine/2008-11-27-MultiplyIntVec.ll
new file mode 100644
index 0000000..544e9ab
--- /dev/null
+++ b/test/Transforms/InstCombine/2008-11-27-MultiplyIntVec.ll
@@ -0,0 +1,11 @@
+; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep mul
+
+define <2 x i8> @f(<2 x i8> %x) {
+  %A = mul <2 x i8> %x, <i8 1, i8 1>
+  ret <2 x i8> %A
+}
+
+define <2 x i8> @g(<2 x i8> %x) {
+  %A = mul <2 x i8> %x, <i8 -1, i8 -1>
+  ret <2 x i8> %A
+}