test that reassociate can handle shifts

llvm-svn: 21760
This commit is contained in:
Chris Lattner 2005-05-07 04:23:29 +00:00
parent f43e974abd
commit 30555b0d14
1 changed files with 10 additions and 0 deletions

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; With shl->mul reassociation, we can see that this is (shl A, 9) * A
;
; RUN: llvm-as < %s | opt -reassociate -instcombine | llvm-dis | grep 'shl .*, ubyte 9'
int %test(int %A, int %B) {
%X = shl int %A, ubyte 5
%Y = shl int %A, ubyte 4
%Z = mul int %Y, %X
ret int %Z
}