From 14ce3fde046ad0e9f4266a611a2f3a040b976749 Mon Sep 17 00:00:00 2001 From: Sanjay Patel Date: Mon, 16 Sep 2019 12:19:18 +0000 Subject: [PATCH] [InstCombine] add icmp tests with extra uses; NFC llvm-svn: 371979 --- llvm/test/Transforms/InstCombine/icmp.ll | 34 ++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) diff --git a/llvm/test/Transforms/InstCombine/icmp.ll b/llvm/test/Transforms/InstCombine/icmp.ll index 1e38a7b..02c26ef 100644 --- a/llvm/test/Transforms/InstCombine/icmp.ll +++ b/llvm/test/Transforms/InstCombine/icmp.ll @@ -728,6 +728,23 @@ define i1 @test37(i32 %x, i32 %y, i32 %z) { ret i1 %c } +define i1 @test37_extra_uses(i32 %x, i32 %y, i32 %z) { +; CHECK-LABEL: @test37_extra_uses( +; CHECK-NEXT: [[LHS:%.*]] = sub nsw i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: call void @foo(i32 [[LHS]]) +; CHECK-NEXT: [[RHS:%.*]] = sub nsw i32 [[X]], [[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, %y + call void @foo(i32 %lhs) + %rhs = sub nsw i32 %x, %z + call void @foo(i32 %rhs) + %c = icmp sgt i32 %lhs, %rhs + ret i1 %c +} + ; X - Y > X - Z -> Z > Y if there is no overflow. define i1 @test38(i32 %x, i32 %y, i32 %z) { ; CHECK-LABEL: @test38( @@ -740,6 +757,23 @@ define i1 @test38(i32 %x, i32 %y, i32 %z) { ret i1 %c } +define i1 @test38_extra_uses(i32 %x, i32 %y, i32 %z) { +; CHECK-LABEL: @test38_extra_uses( +; CHECK-NEXT: [[LHS:%.*]] = sub nuw i32 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: call void @foo(i32 [[LHS]]) +; CHECK-NEXT: [[RHS:%.*]] = sub nuw i32 [[X]], [[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, %y + call void @foo(i32 %lhs) + %rhs = sub nuw i32 %x, %z + call void @foo(i32 %rhs) + %c = icmp ugt i32 %lhs, %rhs + ret i1 %c +} + ; PR9343 #1 define i1 @test39(i32 %X, i32 %Y) { ; CHECK-LABEL: @test39( -- 2.7.4