llvm/test/Transforms/GVN/load-constant-mem.ll
Dan Gohman c1be92f3bb Make BasicAliasAnalysis a normal AliasAnalysis implementation which
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
2010-10-18 18:04:47 +00:00

14 lines
301 B
LLVM

; RUN: opt < %s -basicaa -gvn -instcombine -S | grep {ret i32 0}
; PR4189
@G = external constant [4 x i32]
define i32 @test(i8* %p, i32 %i) nounwind {
entry:
%P = getelementptr [4 x i32]* @G, i32 0, i32 %i
%A = load i32* %P
store i8 4, i8* %p
%B = load i32* %P
%C = sub i32 %A, %B
ret i32 %C
}