; RUN: llc < %s -mtriple=x86_64-linux | FileCheck %s ; RUN: llc < %s -mtriple=x86_64-win32 | FileCheck %s ; Reuse the flags value from the add instructions instead of emitting separate ; testl instructions. ; Use the flags on the add. ; CHECK: test1: ; CHECK: addl ; CHECK-NOT: test ; CHECK: cmovnsl ; CHECK: ret define i32 @test1(i32* %x, i32 %y, i32 %a, i32 %b) nounwind { %tmp2 = load i32* %x, align 4 ; <i32> [#uses=1] %tmp4 = add i32 %tmp2, %y ; <i32> [#uses=1] %tmp5 = icmp slt i32 %tmp4, 0 ; <i1> [#uses=1] %tmp.0 = select i1 %tmp5, i32 %a, i32 %b ; <i32> [#uses=1] ret i32 %tmp.0 } declare void @foo(i32) ; Don't use the flags result of the and here, since the and has no ; other use. A simple test is better. ; CHECK: test2: ; CHECK: testb $16, {{%dil|%cl}} define void @test2(i32 %x) nounwind { %y = and i32 %x, 16 %t = icmp eq i32 %y, 0 br i1 %t, label %true, label %false true: call void @foo(i32 %x) ret void false: ret void } ; Do use the flags result of the and here, since the and has another use. ; CHECK: test3: ; CHECK: andl $16, %e ; CHECK-NEXT: jne define void @test3(i32 %x) nounwind { %y = and i32 %x, 16 %t = icmp eq i32 %y, 0 br i1 %t, label %true, label %false true: call void @foo(i32 %y) ret void false: ret void }