[llvm] r371939 - [InstCombine] add icmp tests with extra uses; NFC

[Sanjay Patel via llvm-commits]

Author: spatel
Date: Sun Sep 15 13:13:27 2019
New Revision: 371939

URL: http://llvm.org/viewvc/llvm-project?rev=371939&view=rev
Log:
[InstCombine] add icmp tests with extra uses; NFC

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

Modified: llvm/trunk/test/Transforms/InstCombine/icmp.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/icmp.ll?rev=371939&r1=371938&r2=371939&view=diff
==============================================================================
--- llvm/trunk/test/Transforms/InstCombine/icmp.ll (original)
+++ llvm/trunk/test/Transforms/InstCombine/icmp.ll Sun Sep 15 13:13:27 2019
@@ -556,6 +556,23 @@ define i1 @test27(i32 %x, i32 %y, i32 %z
   ret i1 %c
 }
 
+define i1 @test27_extra_uses(i32 %x, i32 %y, i32 %z) {
+; CHECK-LABEL: @test27_extra_uses(
+; CHECK-NEXT:    [[LHS:%.*]] = sub nsw i32 [[X:%.*]], [[Z:%.*]]
+; CHECK-NEXT:    call void @foo(i32 [[LHS]])
+; CHECK-NEXT:    [[RHS:%.*]] = sub nsw i32 [[Y:%.*]], [[Z]]
+; CHECK-NEXT:    call void @foo(i32 [[RHS]])
+; CHECK-NEXT:    [[C:%.*]] = icmp sgt i32 [[LHS]], [[RHS]]
+; CHECK-NEXT:    ret i1 [[C]]
+;
+  %lhs = sub nsw i32 %x, %z
+  call void @foo(i32 %lhs)
+  %rhs = sub nsw i32 %y, %z
+  call void @foo(i32 %rhs)
+  %c = icmp sgt i32 %lhs, %rhs
+  ret i1 %c
+}
+
 ; X - Z > Y - Z -> X > Y if there is no overflow.
 define i1 @test28(i32 %x, i32 %y, i32 %z) {
 ; CHECK-LABEL: @test28(
@@ -567,6 +584,23 @@ define i1 @test28(i32 %x, i32 %y, i32 %z
   %c = icmp ugt i32 %lhs, %rhs
   ret i1 %c
 }
+
+define i1 @test28_extra_uses(i32 %x, i32 %y, i32 %z) {
+; CHECK-LABEL: @test28_extra_uses(
+; CHECK-NEXT:    [[LHS:%.*]] = sub nuw i32 [[X:%.*]], [[Z:%.*]]
+; CHECK-NEXT:    call void @foo(i32 [[LHS]])
+; CHECK-NEXT:    [[RHS:%.*]] = sub nuw i32 [[Y:%.*]], [[Z]]
+; CHECK-NEXT:    call void @foo(i32 [[RHS]])
+; CHECK-NEXT:    [[C:%.*]] = icmp ugt i32 [[LHS]], [[RHS]]
+; CHECK-NEXT:    ret i1 [[C]]
+;
+  %lhs = sub nuw i32 %x, %z
+  call void @foo(i32 %lhs)
+  %rhs = sub nuw i32 %y, %z
+  call void @foo(i32 %rhs)
+  %c = icmp ugt i32 %lhs, %rhs
+  ret i1 %c
+}
 
 ; X + Y > X -> Y > 0 if there is no overflow.
 define i1 @test29(i32 %x, i32 %y) {