diff options
| author | Ed Schouten <ed@FreeBSD.org> | 2009-06-02 17:52:33 +0000 |
|---|---|---|
| committer | Ed Schouten <ed@FreeBSD.org> | 2009-06-02 17:52:33 +0000 |
| commit | 009b1c42aa6266385f2c37e227516b24077e6dd7 (patch) | |
| tree | 64ba909838c23261cace781ece27d106134ea451 /test/CodeGen/Generic/add-with-overflow.ll | |
Notes
Diffstat (limited to 'test/CodeGen/Generic/add-with-overflow.ll')
| -rw-r--r-- | test/CodeGen/Generic/add-with-overflow.ll | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/test/CodeGen/Generic/add-with-overflow.ll b/test/CodeGen/Generic/add-with-overflow.ll new file mode 100644 index 000000000000..5c3d540c5cc2 --- /dev/null +++ b/test/CodeGen/Generic/add-with-overflow.ll @@ -0,0 +1,41 @@ +; RUN: llvm-as < %s | llc +; RUN: llvm-as < %s | llc -fast-isel + +@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) |