xref: /llvm-project/llvm/test/CodeGen/Generic/add-with-overflow-128.ll (revision dbbbf73c96bcbf1ffd712fdb2fd2be70c5ada8da) 
1; RUN: llc < %s
2
3@ok = internal constant [4 x i8] c"%d\0A\00"
4@no = internal constant [4 x i8] c"no\0A\00"
5
6define i1 @func1(i128 signext %v1, i128 signext %v2) nounwind {
7entry:
8  %t = call {i128, i1} @llvm.sadd.with.overflow.i128(i128 %v1, i128 %v2)
9  %sum = extractvalue {i128, i1} %t, 0
10  %sum32 = trunc i128 %sum to i32
11  %obit = extractvalue {i128, i1} %t, 1
12  br i1 %obit, label %overflow, label %normal
13
14normal:
15  %t1 = tail call i32 (i8*, ...)* @printf( i8* getelementptr ([4 x i8]* @ok, i32 0, i32 0), i32 %sum32 ) nounwind
16  ret i1 true
17
18overflow:
19  %t2 = tail call i32 (i8*, ...)* @printf( i8* getelementptr ([4 x i8]* @no, i32 0, i32 0) ) nounwind
20  ret i1 false
21}
22
23define i1 @func2(i128 zeroext %v1, i128 zeroext %v2) nounwind {
24entry:
25  %t = call {i128, i1} @llvm.uadd.with.overflow.i128(i128 %v1, i128 %v2)
26  %sum = extractvalue {i128, i1} %t, 0
27  %sum32 = trunc i128 %sum to i32
28  %obit = extractvalue {i128, i1} %t, 1
29  br i1 %obit, label %carry, label %normal
30
31normal:
32  %t1 = tail call i32 (i8*, ...)* @printf( i8* getelementptr ([4 x i8]* @ok, i32 0, i32 0), i32 %sum32 ) nounwind
33  ret i1 true
34
35carry:
36  %t2 = tail call i32 (i8*, ...)* @printf( i8* getelementptr ([4 x i8]* @no, i32 0, i32 0) ) nounwind
37  ret i1 false
38}
39
40declare i32 @printf(i8*, ...) nounwind
41declare {i128, i1} @llvm.sadd.with.overflow.i128(i128, i128)
42declare {i128, i1} @llvm.uadd.with.overflow.i128(i128, i128)
43