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llvm-mirror/test/Transforms/Reassociate/absorption.ll
Duncan Sands d3ece28940 It is possible for several constants which aren't individually absorbing to
combine to the absorbing element.  Thanks to nbjoerg on IRC for pointing this 
out.

llvm-svn: 158399
2012-06-13 12:15:56 +00:00

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LLVM

; RUN: opt -S -reassociate < %s | FileCheck %s
; Check that if constants combine to an absorbing value then the expression is
; evaluated as the absorbing value.
define i8 @foo(i8 %x) {
%tmp1 = or i8 %x, 127
%tmp2 = or i8 %tmp1, 128
ret i8 %tmp2
; CHECK: @foo
; CHECK: ret i8 -1
}