Fix a README item: when doing a comparison with the result

[oota-llvm.git] / test / Transforms / Reassociate / basictest.ll

diff --git a/test/Transforms/Reassociate/basictest.ll b/test/Transforms/Reassociate/basictest.ll
index c7d54af1e4be56ee0f6ec0a0986b0eab6a1175ce..086474066c56154ba2317a5629bb5a7c3ff28ce2 100644 (file)
--- a/test/Transforms/Reassociate/basictest.ll
+++ b/test/Transforms/Reassociate/basictest.ll
@@ -88,19 +88,19 @@ define void @test5() {
 }
 
 define i32 @test6() {
-       %tmp.0 = load i32* @a           ; <i32> [#uses=2]
-       %tmp.1 = load i32* @b           ; <i32> [#uses=2]
+       %tmp.0 = load i32* @a
+       %tmp.1 = load i32* @b
         ; (a+b)
-       %tmp.2 = add i32 %tmp.0, %tmp.1         ; <i32> [#uses=1]
-       %tmp.4 = load i32* @c           ; <i32> [#uses=2]
+       %tmp.2 = add i32 %tmp.0, %tmp.1
+       %tmp.4 = load i32* @c
        ; (a+b)+c
-        %tmp.5 = add i32 %tmp.2, %tmp.4                ; <i32> [#uses=1]
+        %tmp.5 = add i32 %tmp.2, %tmp.4
        ; (a+c)
-        %tmp.8 = add i32 %tmp.0, %tmp.4                ; <i32> [#uses=1]
+        %tmp.8 = add i32 %tmp.0, %tmp.4
        ; (a+c)+b
-        %tmp.11 = add i32 %tmp.8, %tmp.1               ; <i32> [#uses=1]
+        %tmp.11 = add i32 %tmp.8, %tmp.1
        ; X ^ X = 0
-        %RV = xor i32 %tmp.5, %tmp.11          ; <i32> [#uses=1]
+        %RV = xor i32 %tmp.5, %tmp.11
        ret i32 %RV
 ; CHECK: @test6
 ; CHECK: ret i32 0
@@ -108,6 +108,7 @@ define i32 @test6() {
 
 ; This should be one add and two multiplies.
 define i32 @test7(i32 %A, i32 %B, i32 %C) {
+ ; A*A*B + A*C*A
        %aa = mul i32 %A, %A
        %aab = mul i32 %aa, %B
        %ac = mul i32 %A, %C
@@ -133,3 +134,83 @@ define i32 @test8(i32 %X, i32 %Y, i32 %Z) {
 ; CHECK-NEXT: %C = sub i32 %Z, %A
 ; CHECK-NEXT: ret i32 %C
 }
+
+
+; PR5458
+define i32 @test9(i32 %X) {
+  %Y = mul i32 %X, 47
+  %Z = add i32 %Y, %Y
+  ret i32 %Z
+; CHECK: @test9
+; CHECK-NEXT: mul i32 %X, 94
+; CHECK-NEXT: ret i32
+}
+
+define i32 @test10(i32 %X) {
+  %Y = add i32 %X ,%X
+  %Z = add i32 %Y, %X
+  ret i32 %Z
+; CHECK: @test10
+; CHECK-NEXT: mul i32 %X, 3
+; CHECK-NEXT: ret i32
+}
+
+define i32 @test11(i32 %W) {
+  %X = mul i32 %W, 127
+  %Y = add i32 %X ,%X
+  %Z = add i32 %Y, %X
+  ret i32 %Z
+; CHECK: @test11
+; CHECK-NEXT: mul i32 %W, 381
+; CHECK-NEXT: ret i32
+}
+
+define i32 @test12(i32 %X) {
+  %A = sub i32 1, %X
+  %B = sub i32 2, %X
+  %C = sub i32 3, %X
+
+  %Y = add i32 %A ,%B
+  %Z = add i32 %Y, %C
+  ret i32 %Z
+; CHECK: @test12
+; CHECK-NEXT: mul i32 %X, -3
+; CHECK-NEXT: add i32{{.*}}, 6
+; 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
+}
+