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22 lines
615 B
LLVM
22 lines
615 B
LLVM
; RUN: llvm-as < %s | opt -reassociate -instcombine | llvm-dis | not grep sub
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; Test that we can turn things like X*-(Y*Z) -> X*-1*Y*Z.
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define i32 @test1(i32 %a, i32 %b, i32 %z) {
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%c = sub i32 0, %z ; <i32> [#uses=1]
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%d = mul i32 %a, %b ; <i32> [#uses=1]
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%e = mul i32 %c, %d ; <i32> [#uses=1]
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%f = mul i32 %e, 12345 ; <i32> [#uses=1]
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%g = sub i32 0, %f ; <i32> [#uses=1]
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ret i32 %g
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}
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define i32 @test2(i32 %a, i32 %b, i32 %z) {
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%d = mul i32 %z, 40 ; <i32> [#uses=1]
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%c = sub i32 0, %d ; <i32> [#uses=1]
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%e = mul i32 %a, %c ; <i32> [#uses=1]
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%f = sub i32 0, %e ; <i32> [#uses=1]
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ret i32 %f
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}
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