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Test to ensure sub -> neg promotion is working and why.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2631 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2002-05-15 20:30:48 +00:00
parent 193d916983
commit 11d13fbfba
1 changed files with 13 additions and 0 deletions
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test/Transforms/Reassociate/subtest.ll Normal file
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; With sub reassociation, constant folding can eliminate the 12 and -12 constants.
;
; RUN: if as < %s | opt -reassociate -constprop -instcombine -die | dis | grep add
; RUN: then exit 1
; RUN: else exit 0
; RUN: fi
int "test"(int %A, int %B) {
%X = add int -12, %A
%Y = sub int %X, %B
%Z = add int %Y, 12
ret int %Z
}