X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=test%2FTransforms%2FReassociate%2Fbasictest.ll;h=086474066c56154ba2317a5629bb5a7c3ff28ce2;hb=daf97333697e1d243e531f4be648b1640d6a58bb;hp=0f137dc8add9db029fcecb63149cc611b5046550;hpb=35239934517c6fcd52e3e965f40e03f74aa4d11d;p=oota-llvm.git

diff --git a/test/Transforms/Reassociate/basictest.ll b/test/Transforms/Reassociate/basictest.ll
index 0f137dc8add..086474066c5 100644
--- a/test/Transforms/Reassociate/basictest.ll
+++ b/test/Transforms/Reassociate/basictest.ll
@@ -179,3 +179,38 @@ define i32 @test12(i32 %X) {
 ; CHECK-NEXT: ret i32
 }
 
+define i32 @test13(i32 %X1, i32 %X2, i32 %X3) {
+  %A = sub i32 0, %X1
+  %B = mul i32 %A, %X2   ; -X1*X2
+  %C = mul i32 %X1, %X3  ; X1*X3
+  %D = add i32 %B, %C    ; -X1*X2 + X1*X3 -> X1*(X3-X2)
+  ret i32 %D
+; CHECK: @test13
+; CHECK-NEXT: sub i32 %X3, %X2
+; CHECK-NEXT: mul i32 {{.*}}, %X1
+; CHECK-NEXT: ret i32
+}
+
+; PR5359
+define i32 @test14(i32 %X1, i32 %X2) {
+  %B = mul i32 %X1, 47   ; X1*47
+  %C = mul i32 %X2, -47  ; X2*-47
+  %D = add i32 %B, %C    ; X1*47 + X2*-47 -> 47*(X1-X2)
+  ret i32 %D
+; CHECK: @test14
+; CHECK-NEXT: sub i32 %X1, %X2
+; CHECK-NEXT: mul i32 {{.*}}, 47
+; CHECK-NEXT: ret i32
+}
+
+; Do not reassociate expressions of type i1
+define i32 @test15(i32 %X1, i32 %X2, i32 %X3) {
+  %A = icmp ne i32 %X1, 0
+  %B = icmp slt i32 %X2, %X3
+  %C = and i1 %A, %B
+  %D = select i1 %C, i32 %X1, i32 0
+  ret i32 %D
+; CHECK: @test15
+; CHECK: and i1 %A, %B
+}
+