[Bug target/59927] [4.9 Regression] ICE sorry, unimplemented: ms_abi attribute requires -maccumulate-outgoing-args or subtarget optimization implying it

[rth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59927

Richard Henderson <rth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |rth at gcc dot gnu.org

--- Comment #5 from Richard Henderson <rth at gcc dot gnu.org> ---
There's definitely a calls.c bug.

We allocate 24 bytes of stack at line 2973, to make up the 32-byte preferred
alignment from the 8 bytes that we "pushed".  Except that we shouldn't pushing
any bytes at all.

Then we allocate 32 bytes of stack at line 3111 to allocate all the space for
the arguments passed in registers.

Then we ICE because (24+32) % 32 != 0.