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view ldc-posix-tango @ 1410:cc2d8a7388c7
Count the sret register as well when keeping track of how many integer registers
are available for extern(C) functions on x86-64.
Interestingly, llvm-g++ seems to have a very similar bug: http://llvm.org/pr4242
(So this breaks ABI-compatibility with llvm-gcc for this corner case, but gains
it with gcc...)
To clarify, this is about code like this:
{{{
struct S { void*[3] data; }
struct T { void*[2] data; }
// The T should be passed in memory, and p in the last int register.
extern(C) S fail(int, int, int, int, T t, void* p) {
S s;
s.data[0] = t.data[0];
s.data[1] = t.data[1];
s.data[2] = p;
return s;
}
}}}
which should generate code functionally equivalent to this:
{{{
extern(C) S* succeed(S* s, int, int, int, int, T t, void* p) {
s.data[0] = t.data[0];
s.data[1] = t.data[1];
s.data[2] = p;
return s;
}
}}}
(with the same definitions for S and T)
| author | Frits van Bommel <fvbommel wxs.nl> |
|---|---|
| date | Fri, 22 May 2009 13:17:06 +0200 |
| parents | 8403fec8c34c |
| children |
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ignore=object compiler=ldc inifile=ldc.rebuild.conf exeext= objext=o version=LLVM version=LDC noversion=DigitalMars noversion=GNU testversion=linux testversion=darwin testversion=freebsd testversion=Unix testversion=Posix testversion=Windows testversion=Win32 testversion=Win64 testversion=mingw32 testversion=X86 testversion=PPC testversion=X86_64 testversion=PPC64 testversion=D_InlineAsm testversion=D_InlineAsm_X86 testversion=D_InlineAsm_PPC testversion=D_InlineAsm_X86_64 testversion=D_InlineAsm_PPC64 testversion=LLVM_InlineAsm_X86 testversion=LittleEndian testversion=BigEndian testversion=LLVM64 testversion=PIC testversion=Tango [compile] oneatatime=yes cmd=ldmd -c $i flag=$i incdir=-I$i libdir=-L-L$i optimize=-O3 version=-version=$i [link] oneatatime=yes cmd=ldc $i -of$o libdir=-L-L$i lib=-L-l$i flag=-L$i [liblink] safe=yes oneatatime=yes cmd=ar rc $o $i libdir= lib= flag= [postliblink] cmd=ranlib $i [shliblink] shlibs=no [dyliblink] dylibs=no