Mercurial > hg > CbC > CbC_llvm
view test/Analysis/BasicAA/2003-02-26-AccessSizeTest.ll @ 95:afa8332a0e37 LLVM3.8
LLVM 3.8
author | Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> |
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date | Tue, 13 Oct 2015 17:48:58 +0900 |
parents | 95c75e76d11b |
children |
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; This testcase makes sure that size is taken to account when alias analysis ; is performed. It is not legal to delete the second load instruction because ; the value computed by the first load instruction is changed by the store. ; RUN: opt < %s -basicaa -gvn -instcombine -S | FileCheck %s define i32 @test() { ; CHECK: %Y.DONOTREMOVE = load i32, i32* %A ; CHECK: %Z = sub i32 0, %Y.DONOTREMOVE %A = alloca i32 store i32 0, i32* %A %X = load i32, i32* %A %B = bitcast i32* %A to i8* %C = getelementptr i8, i8* %B, i64 1 store i8 1, i8* %C ; Aliases %A %Y.DONOTREMOVE = load i32, i32* %A %Z = sub i32 %X, %Y.DONOTREMOVE ret i32 %Z }