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Imported Upstream version 5.18.0.179

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Former-commit-id: 67aa10e65b237e1c4537630979ee99ebe1374215
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Xamarin Public Jenkins (auto-signing)
2018-10-25 08:34:57 +00:00
parent d6bde52373
commit 8625704ad8
28485 changed files with 3866843 additions and 50 deletions
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20
external/llvm/test/Analysis/BasicAA/2003-02-26-AccessSizeTest.ll vendored Normal file
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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
}