llvm-6502/test/Analysis/BasicAA/gcsetest.ll
2002-08-22 17:31:36 +00:00

24 lines
482 B
LLVM

; Test that GCSE uses basicaa to do alias analysis, which is capable of
; disambiguating some obvious cases. All loads should be removable in
; this testcase.
; RUN: if as < %s | opt -basicaa -gcse -instcombine -dce | dis | grep load
; RUN: then exit 1
; RUN: else exit 0
; RUN: fi
%A = global int 7
%B = global int 8
implementation
int %test() {
%A1 = load int* %A
store int 123, int* %B ; Store cannot alias %A
%A2 = load int* %A
%X = sub int %A1, %A2
ret int %X
}