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Inspired by the linux kernel, the more we keep adds in the pointer realm, the better pointer analysis works.

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llvm-svn: 30495
This commit is contained in:
Andrew Lenharth 2006-09-19 18:23:39 +00:00
parent 66029d909b
commit 17889b837e
1 changed files with 15 additions and 0 deletions
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15
test/Regression/Transforms/InstCombine/cast_ptr.ll Normal file
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; Tests to make sure elimination of casts is working correctly
; RUN: llvm-as < %s | opt -instcombine -disable-output &&
; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep cast
target pointersize = 32
implementation
sbyte* %test1(sbyte* %t) {
%tmpc = cast sbyte* %t to uint
%tmpa = add uint %tmpc, 32
%tv = cast uint %tmpa to sbyte*
ret sbyte* %tv
}