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; Test resolvable and unresolvable calls through function pointers:
; -- both should be retained in function graphs until resolved or until main
; -- former should get resolved in or before main() and never appear in GG
; -- latter should remain unresolved in main() and copied to GG
; -- globals in GG pointed to by latter should be marked I, but not other nodes
;
; RUN: llvm-as < %s | opt -analyze -datastructure-gc -dsgc-check-flags=KnownPtr:S,UnknownPtr:SI -dsgc-dspass=bu
%Z = internal global int 0
%X = internal global int 0
%M = internal global int 0
%.str_1 = internal constant [9 x sbyte] c"&Z = %p\0A\00"
implementation
declare int %printf(sbyte*, ...)
declare void %exit_dummy(int*)
internal void %makeCalls(void (int*)* %GpKnown.1, void (int*)* %GpUnknown.1,
int* %GpKnownPtr, int* %GpUnknownPtr) {
%tmp.0 = load int* %Z
%tmp.1.not = setne int %tmp.0, 0
br bool %tmp.1.not, label %else, label %then
then:
; pass to exit_dummy: never resolved
call void %GpUnknown.1( int* %GpUnknownPtr )
%tmp.61 = load int* %Z
%inc1 = add int %tmp.61, 1
store int %inc1, int* %Z
%tmp.71 = call int (sbyte*, ...)* %printf( sbyte* getelementptr ([9 x sbyte]* %.str_1, long 0, long 0), int* %Z )
ret void
else:
; pass to knownF: resolved in main
call void %GpKnown.1( int* %GpKnownPtr )
%tmp.6 = load int* %Z
%inc = add int %tmp.6, 1
store int %inc, int* %Z
; "known external": resolved here
%tmp.7 = call int (sbyte*, ...)* %printf( sbyte* getelementptr ([9 x sbyte]* %.str_1, long 0, long 0), int* %Z )
ret void
}
internal void %knownF(int* %Y.1) {
%tmp.1 = seteq int* %Y.1, null
br bool %tmp.1, label %then, label %UnifiedExitNode
then:
call void %knownF( int* %Y.1 ) ; direct call to self: resolved here
br label %UnifiedExitNode
UnifiedExitNode:
ret void
}
int %main(int %argc.1) {
%KnownPtr = alloca int
%UnknownPtr = alloca int
store int 1, int* %Z
call void %makeCalls( void (int*)* %knownF, void (int*)* %exit_dummy,
int* %KnownPtr, int* %UnknownPtr )
ret int 0
}
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