mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-11-04 22:07:27 +00:00
c1be92f3bb
does normal initialization and normal chaining. Change the default AliasAnalysis implementation to NoAlias. Update StandardCompileOpts.h and friends to explicitly request BasicAliasAnalysis. Update tests to explicitly request -basicaa. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116720 91177308-0d34-0410-b5e6-96231b3b80d8
19 lines
572 B
LLVM
19 lines
572 B
LLVM
; 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 | grep DONOTREMOVE
|
|
|
|
define i32 @test() {
|
|
%A = alloca i32
|
|
store i32 0, i32* %A
|
|
%X = load i32* %A
|
|
%B = bitcast i32* %A to i8*
|
|
%C = getelementptr i8* %B, i64 1
|
|
store i8 1, i8* %C ; Aliases %A
|
|
%Y.DONOTREMOVE = load i32* %A
|
|
%Z = sub i32 %X, %Y.DONOTREMOVE
|
|
ret i32 %Z
|
|
}
|
|
|