diff options
| author | Dimitry Andric <dim@FreeBSD.org> | 2011-05-02 19:34:44 +0000 |
|---|---|---|
| committer | Dimitry Andric <dim@FreeBSD.org> | 2011-05-02 19:34:44 +0000 |
| commit | 6b943ff3a3f8617113ecbf611cf0f8957e4e19d2 (patch) | |
| tree | fc5f365fb9035b2d0c622bbf06c9bbe8627d7279 /test/CodeGen/ARM/carry.ll | |
| parent | d0e4e96dc17a6c1c6de3340842c80f0e187ba349 (diff) | |
Notes
Diffstat (limited to 'test/CodeGen/ARM/carry.ll')
| -rw-r--r-- | test/CodeGen/ARM/carry.ll | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/test/CodeGen/ARM/carry.ll b/test/CodeGen/ARM/carry.ll index a6a7ed6af184..9b90408cc4db 100644 --- a/test/CodeGen/ARM/carry.ll +++ b/test/CodeGen/ARM/carry.ll @@ -19,3 +19,20 @@ entry: %tmp2 = sub i64 %tmp1, %b ret i64 %tmp2 } + +; add with live carry +define i64 @f3(i32 %al, i32 %bl) { +; CHECK: f3: +; CHECK: adds r +; CHECK: adcs r +; CHECK: adc r +entry: + ; unsigned wide add + %aw = zext i32 %al to i64 + %bw = zext i32 %bl to i64 + %cw = add i64 %aw, %bw + ; ch == carry bit + %ch = lshr i64 %cw, 32 + %dw = add i64 %ch, %bw + ret i64 %dw +} |