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don't use 'not' when we can use a positive test
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35402 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -1,12 +1,10 @@
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; Instcombine was missing a test that caused it to make illegal transformations
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; sometimes. In this case, it transforms the sub into an add:
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; RUN: echo foo
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; RUN: llvm-upgrade < %s | llvm-as | opt -instcombine | llvm-dis | not grep add
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; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep sub
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;
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int "test"(int %i, int %j) {
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%A = mul int %i, %j
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%B = sub int 2, %A
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ret int %B
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define i32 @test(i32 %i, i32 %j) {
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%A = mul i32 %i, %j
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%B = sub i32 2, %A
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ret i32 %B
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}
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