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If instcombine is making dead instructions, ALL that should be used is -die git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3221 91177308-0d34-0410-b5e6-96231b3b80d8
45 lines
837 B
LLVM
45 lines
837 B
LLVM
; This test makes sure that add instructions are properly eliminated.
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;
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; This also tests that a subtract with a constant is properly converted
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; to a add w/negative constant
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; RUN: if as < %s | opt -instcombine -die | dis | grep add
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; RUN: then exit 1
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; RUN: else exit 0
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; RUN: fi
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implementation
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int "test1"(int %A)
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begin
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%B = add int %A, 0
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ret int %B
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end
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int "test2"(int %A)
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begin
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%B = add int %A, 5
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%C = add int %B, -5
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ret int %C
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end
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int "test3"(int %A)
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begin
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%B = add int %A, 5
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%C = sub int %B, 5 ;; This should get converted to an add
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ret int %C
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end
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int "test4"(int %A, int %B) {
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%C = sub int 0, %A
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%D = add int %B, %C ; D = B + -A = B - A
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ret int %D
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}
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int "test5"(int %A, int %B) {
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%C = sub int 0, %A
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%D = add int %C, %B ; D = -A + B = B - A
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ret int %D
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}
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