[Reassociate] Canonicalize operands of vector binary operators.

Prior to this commit fmul and fadd binary operators were being canonicalized for
both scalar and vector versions.  We now canonicalize add, mul, and, or, and xor
vector instructions.

llvm-svn: 222006

1 files changed, 50 insertions, 2 deletions

diff --git a/llvm/test/Transforms/Reassociate/fast-ReassociateVector.ll b/llvm/test/Transforms/Reassociate/fast-ReassociateVector.ll
index ab38edae0c4..eeae096bf94 100644
--- a/llvm/test/Transforms/Reassociate/fast-ReassociateVector.ll
+++ b/llvm/test/Transforms/Reassociate/fast-ReassociateVector.ll
@@ -11,11 +11,11 @@ define <4 x float> @test1() {
   ret <4 x float> %tmp2
 }
 
-; We don't currently commute integer vector operations.
+; Commute integer vector operations.
 define <2 x i32> @test2(<2 x i32> %x, <2 x i32> %y) {
 ; CHECK-LABEL: test2
 ; CHECK-NEXT: %tmp1 = add <2 x i32> %x, %y
-; CHECK-NEXT: %tmp2 = add <2 x i32> %y, %x
+; CHECK-NEXT: %tmp2 = add <2 x i32> %x, %y
 ; CHECK-NEXT: %tmp3 = add <2 x i32> %tmp1, %tmp2
 
   %tmp1 = add <2 x i32> %x, %y
@@ -23,3 +23,51 @@ define <2 x i32> @test2(<2 x i32> %x, <2 x i32> %y) {
   %tmp3 = add <2 x i32> %tmp1, %tmp2
   ret <2 x i32> %tmp3
 }
+
+define <2 x i32> @test3(<2 x i32> %x, <2 x i32> %y) {
+; CHECK-LABEL: test3
+; CHECK-NEXT: %tmp1 = mul <2 x i32> %x, %y
+; CHECK-NEXT: %tmp2 = mul <2 x i32> %x, %y
+; CHECK-NEXT: %tmp3 = mul <2 x i32> %tmp1, %tmp2
+
+  %tmp1 = mul <2 x i32> %x, %y
+  %tmp2 = mul <2 x i32> %y, %x
+  %tmp3 = mul <2 x i32> %tmp1, %tmp2
+  ret <2 x i32> %tmp3
+}
+
+define <2 x i32> @test4(<2 x i32> %x, <2 x i32> %y) {
+; CHECK-LABEL: test4
+; CHECK-NEXT: %tmp1 = and <2 x i32> %x, %y
+; CHECK-NEXT: %tmp2 = and <2 x i32> %x, %y
+; CHECK-NEXT: %tmp3 = and <2 x i32> %tmp1, %tmp2
+
+  %tmp1 = and <2 x i32> %x, %y
+  %tmp2 = and <2 x i32> %y, %x
+  %tmp3 = and <2 x i32> %tmp1, %tmp2
+  ret <2 x i32> %tmp3
+}
+
+define <2 x i32> @test5(<2 x i32> %x, <2 x i32> %y) {
+; CHECK-LABEL: test5
+; CHECK-NEXT: %tmp1 = or <2 x i32> %x, %y
+; CHECK-NEXT: %tmp2 = or <2 x i32> %x, %y
+; CHECK-NEXT: %tmp3 = or <2 x i32> %tmp1, %tmp2
+
+  %tmp1 = or <2 x i32> %x, %y
+  %tmp2 = or <2 x i32> %y, %x
+  %tmp3 = or <2 x i32> %tmp1, %tmp2
+  ret <2 x i32> %tmp3
+}
+
+define <2 x i32> @test6(<2 x i32> %x, <2 x i32> %y) {
+; CHECK-LABEL: test6
+; CHECK-NEXT: %tmp1 = xor <2 x i32> %x, %y
+; CHECK-NEXT: %tmp2 = xor <2 x i32> %x, %y
+; CHECK-NEXT: %tmp3 = xor <2 x i32> %tmp1, %tmp2
+
+  %tmp1 = xor <2 x i32> %x, %y
+  %tmp2 = xor <2 x i32> %y, %x
+  %tmp3 = xor <2 x i32> %tmp1, %tmp2
+  ret <2 x i32> %tmp3
+}