[llvm-commits] [PATCH]: ppc32 va_arg() implementation

[Roman Divacky]

Hi,

the attached patch implements va_arg() lowering on ppc32.
Ints (8, 16, 32 and also 64 bits that need special treatment) work,
floats don't work (neither with gcc - we should warn when someone tries
to use them on ppc32 probably), doubles do work. Both passing via
register_save_area and overflow_area works.

I tried with stuff like

  foo(1, 7, 0xf00ba4cafeLL, 3.0f, 2, 4, 5, (6LL << 32) + 5LL, 7, 8, 9, 10, 11,  0);
  bar(1, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0, 11.0, 0.0);

I'll have some test cases soon too.

This only works at -O0 because of unrelated bugs in the PowerPC backend.

Comments?

roman
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