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| author | David Majnemer <david.majnemer@gmail.com> | 2015-07-14 22:39:23 +0000 |
|---|---|---|
| committer | David Majnemer <david.majnemer@gmail.com> | 2015-07-14 22:39:23 +0000 |
| commit | 33b6f82e72f12cf74341842a689f110a98707b71 (patch) | |
| tree | c3b70af4781d8bafe33d146afc3ca26093e10aaf /llvm/test/Transforms/InstCombine | |
| parent | a97ad16538415f59542f5f9cff087b8cba995365 (diff) | |
| download | bcm5719-llvm-33b6f82e72f12cf74341842a689f110a98707b71.tar.gz bcm5719-llvm-33b6f82e72f12cf74341842a689f110a98707b71.zip | |
[InstCombine] Generalize sub of selects optimization to all BinaryOperators
This exposes further optimization opportunities if the selects are
correlated.
llvm-svn: 242235
Diffstat (limited to 'llvm/test/Transforms/InstCombine')
| -rw-r--r-- | llvm/test/Transforms/InstCombine/add2.ll | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/llvm/test/Transforms/InstCombine/add2.ll b/llvm/test/Transforms/InstCombine/add2.ll index 1af2b0ffbf0..2fe9e8cadeb 100644 --- a/llvm/test/Transforms/InstCombine/add2.ll +++ b/llvm/test/Transforms/InstCombine/add2.ll @@ -395,3 +395,13 @@ define i8 @add_of_mul(i8 %x, i8 %y, i8 %z) { %sum = add nsw i8 %mA, %mB ret i8 %sum } + +define i32 @add_of_selects(i1 %A, i32 %B) { + %sel0 = select i1 %A, i32 0, i32 -2 + %sel1 = select i1 %A, i32 %B, i32 2 + %add = add i32 %sel0, %sel1 + ret i32 %add +; CHECK-LABEL: @add_of_selects( +; CHECK-NEXT: %[[sel:.*]] = select i1 %A, i32 %B, i32 0 +; CHECK-NEXT: ret i32 %[[sel]] +} |
