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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 | f55d26e78851c2c09f8b09cfd7e7bbda7130d93b (patch) | |
| tree | 420bfca4a2ba0d09f6d3e9253b6d847c4bd76724 /test | |
| parent | a0962766baa84a7dcf8d594b91aa45ea1336696f (diff) | |
| download | external_llvm-f55d26e78851c2c09f8b09cfd7e7bbda7130d93b.zip external_llvm-f55d26e78851c2c09f8b09cfd7e7bbda7130d93b.tar.gz external_llvm-f55d26e78851c2c09f8b09cfd7e7bbda7130d93b.tar.bz2 | |
Implement mulo x, 2 -> addo x, x in DAGCombiner.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131800 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/CodeGen/X86/umul-with-overflow.ll | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/test/CodeGen/X86/umul-with-overflow.ll b/test/CodeGen/X86/umul-with-overflow.ll index c997661..84fcbc7 100644 --- a/test/CodeGen/X86/umul-with-overflow.ll +++ b/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 +} |