diff options
| author | Dimitry Andric <dim@FreeBSD.org> | 2017-06-26 20:32:52 +0000 |
|---|---|---|
| committer | Dimitry Andric <dim@FreeBSD.org> | 2017-06-26 20:32:52 +0000 |
| commit | 08bbd35a80bf7765fe0d3043f9eb5a2f2786b649 (patch) | |
| tree | 80108f0f128657f8623f8f66ad9735b4d88e7b47 /test/CodeGen/ARM/v6m-umul-with-overflow.ll | |
| parent | 7c7aba6e5fef47a01a136be655b0a92cfd7090f6 (diff) | |
Diffstat (limited to 'test/CodeGen/ARM/v6m-umul-with-overflow.ll')
| -rw-r--r-- | test/CodeGen/ARM/v6m-umul-with-overflow.ll | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/test/CodeGen/ARM/v6m-umul-with-overflow.ll b/test/CodeGen/ARM/v6m-umul-with-overflow.ll new file mode 100644 index 000000000000..4e3146d71102 --- /dev/null +++ b/test/CodeGen/ARM/v6m-umul-with-overflow.ll @@ -0,0 +1,16 @@ +; RUN: llc < %s -mtriple=thumbv6m-none-eabi | FileCheck %s + +define i1 @unsigned_multiplication_did_overflow(i32, i32) { +; CHECK-LABEL: unsigned_multiplication_did_overflow: +entry-block: + %2 = tail call { i32, i1 } @llvm.umul.with.overflow.i32(i32 %0, i32 %1) + %3 = extractvalue { i32, i1 } %2, 1 + ret i1 %3 + +; CHECK: mov{{s?}} r2, r1 +; CHECK: mov{{s?}} r1, #0 +; CHECK: mov{{s?}} r3, {{#0|r1}} +; CHECK: bl __aeabi_lmul +} + +declare { i32, i1 } @llvm.umul.with.overflow.i32(i32, i32) |