llvm-6502/test/Analysis/DSGraph/2005-03-24-Global-Arg-Alias.ll
2005-03-25 15:36:19 +00:00

27 lines
569 B
LLVM

; RUN: llvm-as < %s | opt -ds-aa -load-vn -gcse | llvm-dis | grep 'load int\* %L'
%G = internal global int* null
int %caller(bool %P) {
%L = alloca int
call void %callee(bool %P, int* %L)
;; At this point, G could point to L, so we can't eliminate these operations.
%GP = load int** %G
store int 17, int* %L
store int 18, int* %GP ;; might clober L
%A = load int* %L ;; is not necessarily 17!
ret int %A
}
internal void %callee(bool %Cond, int* %P) {
br bool %Cond, label %T, label %F
T:
store int* %P, int** %G
ret void
F:
ret void
}