New EarlyCSE tests for CSE-ing across commutativity.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165510 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/EarlyCSE/commute.ll b/test/Transforms/EarlyCSE/commute.ll
new file mode 100644 (file)
index 0000000..f84a7dd
--- /dev/null
+++ b/test/Transforms/EarlyCSE/commute.ll
@@ -0,0 +1,66 @@
+; RUN: opt < %s -S -early-cse | FileCheck %s
+
+; CHECK: @test1
+define void @test1(float %A, float %B, float* %PA, float* %PB) {
+  ; CHECK-NEXT: fadd
+  ; CHECK-NEXT: store
+  ; CHECK-NEXT: store
+  ; CHECK-NEXT: ret
+  %C = fadd float %A, %B
+  store float %C, float* %PA
+  %D = fadd float %B, %A
+  store float %D, float* %PB
+  ret void
+}
+
+; CHECK: @test2
+define void @test2(float %A, float %B, i1* %PA, i1* %PB) {
+  ; CHECK-NEXT: fcmp
+  ; CHECK-NEXT: store
+  ; CHECK-NEXT: store
+  ; CHECK-NEXT: ret
+  %C = fcmp eq float %A, %B
+  store i1 %C, i1* %PA
+  %D = fcmp eq float %B, %A
+  store i1 %D, i1* %PB
+  ret void
+}
+
+; CHECK: @test3
+define void @test3(float %A, float %B, i1* %PA, i1* %PB) {
+  ; CHECK-NEXT: fcmp
+  ; CHECK-NEXT: store
+  ; CHECK-NEXT: store
+  ; CHECK-NEXT: ret
+  %C = fcmp uge float %A, %B
+  store i1 %C, i1* %PA
+  %D = fcmp ule float %B, %A
+  store i1 %D, i1* %PB
+  ret void
+}
+
+; CHECK: @test4
+define void @test4(i32 %A, i32 %B, i1* %PA, i1* %PB) {
+  ; CHECK-NEXT: icmp
+  ; CHECK-NEXT: store
+  ; CHECK-NEXT: store
+  ; CHECK-NEXT: ret
+  %C = icmp eq i32 %A, %B
+  store i1 %C, i1* %PA
+  %D = icmp eq i32 %B, %A
+  store i1 %D, i1* %PB
+  ret void
+}
+
+; CHECK: @test5
+define void @test5(i32 %A, i32 %B, i1* %PA, i1* %PB) {
+  ; CHECK-NEXT: icmp
+  ; CHECK-NEXT: store
+  ; CHECK-NEXT: store
+  ; CHECK-NEXT: ret
+  %C = icmp sgt i32 %A, %B
+  store i1 %C, i1* %PA
+  %D = icmp slt i32 %B, %A
+  store i1 %D, i1* %PB
+  ret void
+}