; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py ; RUN: llc < %s -mtriple=x86_64-linux | FileCheck %s --check-prefix=LNX ; RUN: llc < %s -mtriple=x86_64-win32 | FileCheck %s --check-prefix=WIN ; Reuse the flags value from the add instructions instead of emitting separate ; testl instructions. ; Use the flags on the add. define i32 @test1(ptr %x, i32 %y, i32 %a, i32 %b) nounwind { ; LNX-LABEL: test1: ; LNX: # %bb.0: ; LNX-NEXT: movl %edx, %eax ; LNX-NEXT: addl (%rdi), %esi ; LNX-NEXT: cmovnsl %ecx, %eax ; LNX-NEXT: retq ; ; WIN-LABEL: test1: ; WIN: # %bb.0: ; WIN-NEXT: movl %r8d, %eax ; WIN-NEXT: addl (%rcx), %edx ; WIN-NEXT: cmovnsl %r9d, %eax ; WIN-NEXT: retq %tmp2 = load i32, ptr %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. define void @test2(i32 %x) nounwind { ; LNX-LABEL: test2: ; LNX: # %bb.0: ; LNX-NEXT: testb $16, %dil ; LNX-NEXT: jne .LBB1_2 ; LNX-NEXT: # %bb.1: # %true ; LNX-NEXT: pushq %rax ; LNX-NEXT: callq foo@PLT ; LNX-NEXT: popq %rax ; LNX-NEXT: .LBB1_2: # %false ; LNX-NEXT: retq ; ; WIN-LABEL: test2: ; WIN: # %bb.0: ; WIN-NEXT: subq $40, %rsp ; WIN-NEXT: testb $16, %cl ; WIN-NEXT: jne .LBB1_2 ; WIN-NEXT: # %bb.1: # %true ; WIN-NEXT: callq foo ; WIN-NEXT: .LBB1_2: # %false ; WIN-NEXT: addq $40, %rsp ; WIN-NEXT: retq %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. define void @test3(i32 %x) nounwind { ; LNX-LABEL: test3: ; LNX: # %bb.0: ; LNX-NEXT: andl $16, %edi ; LNX-NEXT: jne .LBB2_2 ; LNX-NEXT: # %bb.1: # %true ; LNX-NEXT: pushq %rax ; LNX-NEXT: callq foo@PLT ; LNX-NEXT: popq %rax ; LNX-NEXT: .LBB2_2: # %false ; LNX-NEXT: retq ; ; WIN-LABEL: test3: ; WIN: # %bb.0: ; WIN-NEXT: subq $40, %rsp ; WIN-NEXT: andl $16, %ecx ; WIN-NEXT: jne .LBB2_2 ; WIN-NEXT: # %bb.1: # %true ; WIN-NEXT: callq foo ; WIN-NEXT: .LBB2_2: # %false ; WIN-NEXT: addq $40, %rsp ; WIN-NEXT: retq %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 }