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| author | Bill Wendling <isanbard@gmail.com> | 2008-11-26 22:42:19 +0000 |
|---|---|---|
| committer | Bill Wendling <isanbard@gmail.com> | 2008-11-26 22:42:19 +0000 |
| commit | e21815f41b9deda5fa931606ab90aeca33a80ca2 (patch) | |
| tree | a17fc9f4c0c60035cb74f710eb00ed0ba9bfc2f7 /test/CodeGen/X86/add-with-overflow.ll | |
| parent | 3fafd935607844085a23c012e2a8778fa97206a0 (diff) | |
Add x86-specific test for add-with-overflow intrinsics.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60125 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/X86/add-with-overflow.ll')
| -rw-r--r-- | test/CodeGen/X86/add-with-overflow.ll | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/test/CodeGen/X86/add-with-overflow.ll b/test/CodeGen/X86/add-with-overflow.ll new file mode 100644 index 0000000000..8fab46cd62 --- /dev/null +++ b/test/CodeGen/X86/add-with-overflow.ll @@ -0,0 +1,41 @@ +; RUN: llvm-as < %s | llc -march=x86 | grep {jo} | count 1 +; RUN: llvm-as < %s | llc -march=x86 | grep {jc} | count 1 + +@ok = internal constant [4 x i8] c"%d\0A\00" +@no = internal constant [4 x i8] c"no\0A\00" + +define i1 @func1(i32 %v1, i32 %v2) nounwind { +entry: + %t = call {i32, i1} @llvm.sadd.with.overflow.i32(i32 %v1, i32 %v2) + %sum = extractvalue {i32, i1} %t, 0 + %obit = extractvalue {i32, i1} %t, 1 + br i1 %obit, label %overflow, label %normal + +normal: + %t1 = tail call i32 (i8*, ...)* @printf( i8* getelementptr ([4 x i8]* @ok, i32 0, i32 0), i32 %sum ) nounwind + ret i1 true + +overflow: + %t2 = tail call i32 (i8*, ...)* @printf( i8* getelementptr ([4 x i8]* @no, i32 0, i32 0) ) nounwind + ret i1 false +} + +define i1 @func2(i32 %v1, i32 %v2) nounwind { +entry: + %t = call {i32, i1} @llvm.uadd.with.overflow.i32(i32 %v1, i32 %v2) + %sum = extractvalue {i32, i1} %t, 0 + %obit = extractvalue {i32, i1} %t, 1 + br i1 %obit, label %overflow, label %normal + +normal: + %t1 = tail call i32 (i8*, ...)* @printf( i8* getelementptr ([4 x i8]* @ok, i32 0, i32 0), i32 %sum ) nounwind + ret i1 true + +overflow: + %t2 = tail call i32 (i8*, ...)* @printf( i8* getelementptr ([4 x i8]* @no, i32 0, i32 0) ) nounwind + ret i1 false +} + +declare i32 @printf(i8*, ...) nounwind +declare {i32, i1} @llvm.sadd.with.overflow.i32(i32, i32) +declare {i32, i1} @llvm.uadd.with.overflow.i32(i32, i32) |