[llvm] r350154 - [InstCombine] [NFC] update testcases for canonicalize MUL with NEG operand

[Chen Zheng via llvm-commits]

Author: shchenz
Date: Sat Dec 29 04:18:15 2018
New Revision: 350154

URL: http://llvm.org/viewvc/llvm-project?rev=350154&view=rev
Log:
[InstCombine] [NFC] update testcases for canonicalize MUL with NEG operand

Modified:
    llvm/trunk/test/Transforms/InstCombine/mul.ll

Modified: llvm/trunk/test/Transforms/InstCombine/mul.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/mul.ll?rev=350154&r1=350153&r2=350154&view=diff
==============================================================================
--- llvm/trunk/test/Transforms/InstCombine/mul.ll (original)
+++ llvm/trunk/test/Transforms/InstCombine/mul.ll Sat Dec 29 04:18:15 2018
@@ -454,14 +454,16 @@ define i32 @test_mul_canonicalize_op0(i3
   ret i32 %mul
 }
 
-define i32 @test_mul_canonicalize_op1(i32 %x, i32 %y) {
+define i32 @test_mul_canonicalize_op1(i32 %x, i32 %z) {
 ; CHECK-LABEL: @test_mul_canonicalize_op1(
-; CHECK-NEXT:    [[NEG:%.*]] = sub i32 0, [[Y:%.*]]
-; CHECK-NEXT:    [[MUL:%.*]] = mul i32 [[NEG]], [[X:%.*]]
+; CHECK-NEXT:    [[Y:%.*]] = mul i32 [[Z:%.*]], 3
+; CHECK-NEXT:    [[NEG:%.*]] = sub i32 0, [[X:%.*]]
+; CHECK-NEXT:    [[MUL:%.*]] = mul i32 [[Y]], [[NEG]]
 ; CHECK-NEXT:    ret i32 [[MUL]]
 ;
-  %neg = sub i32 0, %y
-  %mul = mul i32 %x, %neg
+  %y = mul i32 %z, 3 
+  %neg = sub i32 0, %x
+  %mul = mul i32 %y, %neg
   ret i32 %mul
 }
 
@@ -486,3 +488,16 @@ define <2 x i32> @test_mul_canonicalize_
   %mul = mul <2 x i32> %neg, %y
   ret <2 x i32> %mul
 }
+
+define i32 @test_mul_canonicalize_multiple_uses(i32 %x, i32 %y) {
+; CHECK-LABEL: @test_mul_canonicalize_multiple_uses(
+; CHECK-NEXT:    [[NEG:%.*]] = sub i32 0, [[X:%.*]]
+; CHECK-NEXT:    [[MUL:%.*]] = mul i32 [[NEG]], [[Y:%.*]]
+; CHECK-NEXT:    [[MUL2:%.*]] = mul i32 [[MUL]], [[NEG]]
+; CHECK-NEXT:    ret i32 [[MUL2]]
+;
+  %neg = sub i32 0, %x
+  %mul = mul i32 %neg, %y
+  %mul2 = mul i32 %mul, %neg
+  ret i32 %mul2
+}