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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48530 91177308-0d34-0410-b5e6-96231b3b80d8
14 lines
428 B
LLVM
14 lines
428 B
LLVM
; With sub reassociation, constant folding can eliminate the two 12 constants.
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;
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; RUN: llvm-as < %s | opt -reassociate -constprop -dce | llvm-dis | not grep 12
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define i32 @test(i32 %A, i32 %B, i32 %C, i32 %D) {
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%M = add i32 %A, 12 ; <i32> [#uses=1]
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%N = add i32 %M, %B ; <i32> [#uses=1]
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%O = add i32 %N, %C ; <i32> [#uses=1]
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%P = sub i32 %D, %O ; <i32> [#uses=1]
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%Q = add i32 %P, 12 ; <i32> [#uses=1]
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ret i32 %Q
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}
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