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269da7901a
and passing a null pointer into a function.
For this testcase:
void %test(int** %X) {
store int* null, int** %X
call void %test(int** null)
ret void
}
we now generate this:
test:
sub %ESP, 12
mov %EAX, DWORD PTR [%ESP + 16]
mov DWORD PTR [%EAX], 0
mov DWORD PTR [%ESP], 0
call test
add %ESP, 12
ret
instead of this:
test:
sub %ESP, 12
mov %EAX, DWORD PTR [%ESP + 16]
mov %ECX, 0
mov DWORD PTR [%EAX], %ECX
mov %EAX, 0
mov DWORD PTR [%ESP], %EAX
call test
add %ESP, 12
ret
llvm-svn: 13558
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