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view ir/irdsymbol.h @ 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 | 1860414bf3b7 |
children |
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line source
#ifndef LDC_IR_IRDSYMBOL_H #define LDC_IR_IRDSYMBOL_H #include <set> struct IrModule; struct IrFunction; struct IrStruct; struct IrGlobal; struct IrLocal; struct IrField; struct IrVar; struct Dsymbol; namespace llvm { struct Value; } struct IrDsymbol { static std::set<IrDsymbol*> list; static void resetAll(); // overload all of these to make sure // the static list is up to date IrDsymbol(); IrDsymbol(const IrDsymbol& s); ~IrDsymbol(); void reset(); Module* DModule; bool resolved; bool declared; bool initialized; bool defined; IrModule* irModule; IrStruct* irStruct; IrFunction* irFunc; IrGlobal* irGlobal; IrLocal* irLocal; IrField* irField; IrVar* getIrVar(); llvm::Value*& getIrValue(); bool isSet(); }; #endif