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view dmd/mem.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 | c53b6e3fe49a |
children |
line wrap: on
line source
// Copyright (C) 2000-2001 by Chromium Communications // All Rights Reserved #ifndef ROOT_MEM_H #define ROOT_MEM_H #include <stddef.h> // for size_t typedef void (*FINALIZERPROC)(void* pObj, void* pClientData); struct GC; // thread specific allocator struct Mem { GC *gc; // pointer to our thread specific allocator Mem() { gc = NULL; } void init(); // Derive from Mem to get these storage allocators instead of global new/delete void * operator new(size_t m_size); void * operator new(size_t m_size, Mem *mem); void * operator new(size_t m_size, GC *gc); void operator delete(void *p); void * operator new[](size_t m_size); void operator delete[](void *p); char *strdup(const char *s); void *malloc(size_t size); void *malloc_uncollectable(size_t size); void *calloc(size_t size, size_t n); void *realloc(void *p, size_t size); void free(void *p); void free_uncollectable(void *p); void *mallocdup(void *o, size_t size); void error(); void check(void *p); // validate pointer void fullcollect(); // do full garbage collection void fullcollectNoStack(); // do full garbage collection, no scan stack void mark(void *pointer); void addroots(char* pStart, char* pEnd); void removeroots(char* pStart); void setFinalizer(void* pObj, FINALIZERPROC pFn, void* pClientData); void setStackBottom(void *bottom); GC *getThreadGC(); // get apartment allocator for this thread }; extern Mem mem; #endif /* ROOT_MEM_H */