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| author | Benjamin Kramer <benny.kra@googlemail.com> | 2011-05-21 18:31:55 +0000 |
|---|---|---|
| committer | Benjamin Kramer <benny.kra@googlemail.com> | 2011-05-21 18:31:55 +0000 |
| commit | 2fd48f2730f20787d35a1b679544a2945becb138 (patch) | |
| tree | 96c45828ce4152d0c34db84e4684c9a2ad86341c /llvm/test | |
| parent | e08fb1dce970029f1889ce77671ce0f22a62e6b4 (diff) | |
| download | bcm5719-llvm-2fd48f2730f20787d35a1b679544a2945becb138.tar.gz bcm5719-llvm-2fd48f2730f20787d35a1b679544a2945becb138.zip | |
Implement mulo x, 2 -> addo x, x in DAGCombiner.
llvm-svn: 131800
Diffstat (limited to 'llvm/test')
| -rw-r--r-- | llvm/test/CodeGen/X86/umul-with-overflow.ll | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/X86/umul-with-overflow.ll b/llvm/test/CodeGen/X86/umul-with-overflow.ll index c9976617a24..84fcbc7f829 100644 --- a/llvm/test/CodeGen/X86/umul-with-overflow.ll +++ b/llvm/test/CodeGen/X86/umul-with-overflow.ll @@ -12,3 +12,27 @@ define i1 @a(i32 %x) zeroext nounwind { ; CHECK: movzbl %al, %eax ; CHECK: ret } + +define i32 @test2(i32 %a, i32 %b) nounwind readnone { +entry: + %tmp0 = add i32 %b, %a + %tmp1 = call { i32, i1 } @llvm.umul.with.overflow.i32(i32 %tmp0, i32 2) + %tmp2 = extractvalue { i32, i1 } %tmp1, 0 + ret i32 %tmp2 +; CHECK: test2: +; CHECK: addl +; CHECK-NEXT: addl +; CHECK-NEXT: ret +} + +define i32 @test3(i32 %a, i32 %b) nounwind readnone { +entry: + %tmp0 = add i32 %b, %a + %tmp1 = call { i32, i1 } @llvm.umul.with.overflow.i32(i32 %tmp0, i32 4) + %tmp2 = extractvalue { i32, i1 } %tmp1, 0 + ret i32 %tmp2 +; CHECK: test3: +; CHECK: addl +; CHECK: mull +; CHECK-NEXT: ret +} |
