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1; RUN: opt < %s -gvn -S | FileCheck %s
2;
3
4%0 = type { i64, i1 }
5
6define i64 @test1(i64 %a, i64 %b) nounwind ssp {
7entry:
8  %uadd = tail call %0 @llvm.uadd.with.overflow.i64(i64 %a, i64 %b)
9  %uadd.0 = extractvalue %0 %uadd, 0
10  %add1 = add i64 %a, %b
11  ret i64 %add1
12}
13
14; CHECK: @test1
15; CHECK-NOT: add1
16; CHECK: ret
17
18define i64 @test2(i64 %a, i64 %b) nounwind ssp {
19entry:
20  %usub = tail call %0 @llvm.usub.with.overflow.i64(i64 %a, i64 %b)
21  %usub.0 = extractvalue %0 %usub, 0
22  %sub1 = sub i64 %a, %b
23  ret i64 %sub1
24}
25
26; CHECK: @test2
27; CHECK-NOT: sub1
28; CHECK: ret
29
30define i64 @test3(i64 %a, i64 %b) nounwind ssp {
31entry:
32  %umul = tail call %0 @llvm.umul.with.overflow.i64(i64 %a, i64 %b)
33  %umul.0 = extractvalue %0 %umul, 0
34  %mul1 = mul i64 %a, %b
35  ret i64 %mul1
36}
37
38; CHECK: @test3
39; CHECK-NOT: mul1
40; CHECK: ret
41
42define i64 @test4(i64 %a, i64 %b) nounwind ssp {
43entry:
44  %sadd = tail call %0 @llvm.sadd.with.overflow.i64(i64 %a, i64 %b)
45  %sadd.0 = extractvalue %0 %sadd, 0
46  %add1 = add i64 %a, %b
47  ret i64 %add1
48}
49
50; CHECK: @test4
51; CHECK-NOT: add1
52; CHECK: ret
53
54define i64 @test5(i64 %a, i64 %b) nounwind ssp {
55entry:
56  %ssub = tail call %0 @llvm.ssub.with.overflow.i64(i64 %a, i64 %b)
57  %ssub.0 = extractvalue %0 %ssub, 0
58  %sub1 = sub i64 %a, %b
59  ret i64 %sub1
60}
61
62; CHECK: @test5
63; CHECK-NOT: sub1
64; CHECK: ret
65
66define i64 @test6(i64 %a, i64 %b) nounwind ssp {
67entry:
68  %smul = tail call %0 @llvm.smul.with.overflow.i64(i64 %a, i64 %b)
69  %smul.0 = extractvalue %0 %smul, 0
70  %mul1 = mul i64 %a, %b
71  ret i64 %mul1
72}
73
74; CHECK: @test6
75; CHECK-NOT: mul1
76; CHECK: ret
77
78declare void @exit(i32) noreturn
79declare %0 @llvm.uadd.with.overflow.i64(i64, i64) nounwind readnone
80declare %0 @llvm.usub.with.overflow.i64(i64, i64) nounwind readnone
81declare %0 @llvm.umul.with.overflow.i64(i64, i64) nounwind readnone
82declare %0 @llvm.sadd.with.overflow.i64(i64, i64) nounwind readnone
83declare %0 @llvm.ssub.with.overflow.i64(i64, i64) nounwind readnone
84declare %0 @llvm.smul.with.overflow.i64(i64, i64) nounwind readnone
85
86