1; RUN: llc < %s -mtriple=x86_64-linux | FileCheck %s
2; RUN: llc < %s -mtriple=x86_64-win32 | FileCheck %s
3
4; Reuse the flags value from the add instructions instead of emitting separate
5; testl instructions.
6
7; Use the flags on the add.
8
9; CHECK-LABEL: test1:
10;     CHECK: addl
11; CHECK-NOT: test
12;     CHECK: cmovnsl
13;     CHECK: ret
14
15define i32 @test1(i32* %x, i32 %y, i32 %a, i32 %b) nounwind {
16	%tmp2 = load i32, i32* %x, align 4		; <i32> [#uses=1]
17	%tmp4 = add i32 %tmp2, %y		; <i32> [#uses=1]
18	%tmp5 = icmp slt i32 %tmp4, 0		; <i1> [#uses=1]
19	%tmp.0 = select i1 %tmp5, i32 %a, i32 %b		; <i32> [#uses=1]
20	ret i32 %tmp.0
21}
22
23declare void @foo(i32)
24
25; Don't use the flags result of the and here, since the and has no
26; other use. A simple test is better.
27
28; CHECK-LABEL: test2:
29; CHECK: testb   $16, {{%dil|%cl}}
30
31define void @test2(i32 %x) nounwind {
32  %y = and i32 %x, 16
33  %t = icmp eq i32 %y, 0
34  br i1 %t, label %true, label %false
35true:
36  call void @foo(i32 %x)
37  ret void
38false:
39  ret void
40}
41
42; Do use the flags result of the and here, since the and has another use.
43
44; CHECK-LABEL: test3:
45;      CHECK: andl    $16, %e
46; CHECK-NEXT: jne
47
48define void @test3(i32 %x) nounwind {
49  %y = and i32 %x, 16
50  %t = icmp eq i32 %y, 0
51  br i1 %t, label %true, label %false
52true:
53  call void @foo(i32 %y)
54  ret void
55false:
56  ret void
57}
58