1; RUN: llc < %s -march=x86 | FileCheck %s
2; <rdar://problem/8449754>
3
4define i32 @test1(i32 %sum, i32 %x) nounwind readnone ssp {
5entry:
6; CHECK-LABEL: test1:
7; CHECK: cmpl %ecx, %eax
8; CHECK-NOT: addl
9; CHECK: adcl $0, %eax
10  %add4 = add i32 %x, %sum
11  %cmp = icmp ult i32 %add4, %x
12  %inc = zext i1 %cmp to i32
13  %z.0 = add i32 %add4, %inc
14  ret i32 %z.0
15}
16
17; Instcombine transforms test1 into test2:
18; CHECK-LABEL: test2:
19; CHECK: movl
20; CHECK-NEXT: addl
21; CHECK-NEXT: adcl $0
22; CHECK-NEXT: ret
23define i32 @test2(i32 %sum, i32 %x) nounwind readnone ssp {
24entry:
25  %uadd = call { i32, i1 } @llvm.uadd.with.overflow.i32(i32 %x, i32 %sum)
26  %0 = extractvalue { i32, i1 } %uadd, 0
27  %cmp = extractvalue { i32, i1 } %uadd, 1
28  %inc = zext i1 %cmp to i32
29  %z.0 = add i32 %0, %inc
30  ret i32 %z.0
31}
32
33; <rdar://problem/12579915>
34define i32 @test3(i32 %x, i32 %y, i32 %res) nounwind uwtable readnone ssp {
35entry:
36  %cmp = icmp ugt i32 %x, %y
37  %dec = sext i1 %cmp to i32
38  %dec.res = add nsw i32 %dec, %res
39  ret i32 %dec.res
40; CHECK-LABEL: test3:
41; CHECK: cmpl
42; CHECK: sbbl
43; CHECK: ret
44}
45
46declare { i32, i1 } @llvm.uadd.with.overflow.i32(i32, i32) nounwind readnone
47