1 files changed, 129 insertions, 9 deletions
diff --git a/test/Transforms/Reassociate/mulfactor.ll b/test/Transforms/Reassociate/mulfactor.ll
index f279727c99307..6c099b43b363e 100644
--- a/test/Transforms/Reassociate/mulfactor.ll
+++ b/test/Transforms/Reassociate/mulfactor.ll
@@ -1,14 +1,134 @@
-; RUN: opt < %s -reassociate -instcombine -S | grep mul | count 2
+; RUN: opt < %s -reassociate -S | FileCheck %s
 
-; This should have exactly 2 multiplies when we're done.
+define i32 @test1(i32 %a, i32 %b) {
+; CHECK: @test1
+; CHECK: mul i32 %a, %a
+; CHECK-NEXT: mul i32 %a, 2
+; CHECK-NEXT: add
+; CHECK-NEXT: mul
+; CHECK-NEXT: add
+; CHECK-NEXT: ret
 
-define i32 @f(i32 %a, i32 %b) {
-	%tmp.2 = mul i32 %a, %a		; <i32> [#uses=1]
-	%tmp.5 = shl i32 %a, 1		; <i32> [#uses=1]
-	%tmp.6 = mul i32 %tmp.5, %b		; <i32> [#uses=1]
-	%tmp.10 = mul i32 %b, %b		; <i32> [#uses=1]
-	%tmp.7 = add i32 %tmp.6, %tmp.2		; <i32> [#uses=1]
-	%tmp.11 = add i32 %tmp.7, %tmp.10		; <i32> [#uses=1]
+entry:
+	%tmp.2 = mul i32 %a, %a
+	%tmp.5 = shl i32 %a, 1
+	%tmp.6 = mul i32 %tmp.5, %b
+	%tmp.10 = mul i32 %b, %b
+	%tmp.7 = add i32 %tmp.6, %tmp.2
+	%tmp.11 = add i32 %tmp.7, %tmp.10
 	ret i32 %tmp.11
 }
 
+define i32 @test2(i32 %t) {
+; CHECK: @test2
+; CHECK: mul
+; CHECK-NEXT: add
+; CHECK-NEXT: ret
+
+entry:
+	%a = mul i32 %t, 6
+	%b = mul i32 %t, 36
+	%c = add i32 %b, 15
+	%d = add i32 %c, %a
+	ret i32 %d
+}
+
+define i32 @test3(i32 %x) {
+; (x^8)
+; CHECK: @test3
+; CHECK: mul
+; CHECK-NEXT: mul
+; CHECK-NEXT: mul
+; CHECK-NEXT: ret
+
+entry:
+  %a = mul i32 %x, %x
+  %b = mul i32 %a, %x
+  %c = mul i32 %b, %x
+  %d = mul i32 %c, %x
+  %e = mul i32 %d, %x
+  %f = mul i32 %e, %x
+  %g = mul i32 %f, %x
+  ret i32 %g
+}
+
+define i32 @test4(i32 %x) {
+; (x^7)
+; CHECK: @test4
+; CHECK: mul
+; CHECK-NEXT: mul
+; CHECK-NEXT: mul
+; CHECK-NEXT: mul
+; CHECK-NEXT: ret
+
+entry:
+  %a = mul i32 %x, %x
+  %b = mul i32 %a, %x
+  %c = mul i32 %b, %x
+  %d = mul i32 %c, %x
+  %e = mul i32 %d, %x
+  %f = mul i32 %e, %x
+  ret i32 %f
+}
+
+define i32 @test5(i32 %x, i32 %y) {
+; (x^4) * (y^2)
+; CHECK: @test5
+; CHECK: mul
+; CHECK-NEXT: mul
+; CHECK-NEXT: mul
+; CHECK-NEXT: ret
+
+entry:
+  %a = mul i32 %x, %y
+  %b = mul i32 %a, %y
+  %c = mul i32 %b, %x
+  %d = mul i32 %c, %x
+  %e = mul i32 %d, %x
+  ret i32 %e
+}
+
+define i32 @test6(i32 %x, i32 %y, i32 %z) {
+; (x^5) * (y^3) * z
+; CHECK: @test6
+; CHECK: mul
+; CHECK-NEXT: mul
+; CHECK-NEXT: mul
+; CHECK-NEXT: mul
+; CHECK-NEXT: mul
+; CHECK-NEXT: mul
+; CHECK-NEXT: ret
+
+entry:
+  %a = mul i32 %x, %y
+  %b = mul i32 %a, %x
+  %c = mul i32 %b, %y
+  %d = mul i32 %c, %x
+  %e = mul i32 %d, %y
+  %f = mul i32 %e, %x
+  %g = mul i32 %f, %z
+  %h = mul i32 %g, %x
+  ret i32 %h
+}
+
+define i32 @test7(i32 %x, i32 %y, i32 %z) {
+; (x^4) * (y^3) * (z^2)
+; CHECK: @test7
+; CHECK: mul
+; CHECK-NEXT: mul
+; CHECK-NEXT: mul
+; CHECK-NEXT: mul
+; CHECK-NEXT: mul
+; CHECK-NEXT: ret
+
+entry:
+  %a = mul i32 %y, %x
+  %b = mul i32 %a, %z
+  %c = mul i32 %b, %z
+  %d = mul i32 %c, %x
+  %e = mul i32 %d, %y
+  %f = mul i32 %e, %y
+  %g = mul i32 %f, %x
+  %h = mul i32 %g, %x
+  ret i32 %h
+}