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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48530 91177308-0d34-0410-b5e6-96231b3b80d8
13 lines
385 B
LLVM
13 lines
385 B
LLVM
; With sub reassociation, constant folding can eliminate all of the constants.
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;
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; RUN: llvm-as < %s | opt -reassociate -constprop -instcombine -dce | llvm-dis | not grep add
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define i32 @test(i32 %A, i32 %B) {
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%W = add i32 5, %B ; <i32> [#uses=1]
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%X = add i32 -7, %A ; <i32> [#uses=1]
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%Y = sub i32 %X, %W ; <i32> [#uses=1]
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%Z = add i32 %Y, 12 ; <i32> [#uses=1]
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ret i32 %Z
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}
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