llvm-6502/test/Analysis/GlobalsModRef/2008-09-03-ReadGlobals.ll

19 lines
401 B
LLVM
Raw Normal View History

; RUN: llvm-as < %s | opt -globalsmodref-aa -gvn | llvm-dis | grep call | count 2
@g = internal global i32 0 ; <i32*> [#uses=2]
define i32 @r() {
%tmp = load i32* @g ; <i32> [#uses=1]
ret i32 %tmp
}
define i32 @f() {
entry:
%tmp = call i32 @e( ) ; <i32> [#uses=1]
store i32 %tmp, i32* @g
%tmp2 = call i32 @e( ) ; <i32> [#uses=1]
ret i32 %tmp2
}
declare i32 @e() readonly ; might call @r