The (black?) art of inlining...

[Jim Marshall]

I have some code which we have been compiling with GCC 3.2.2 (yes its 
old). We recently added Solaris SPARC which has GCC 3.4.6. I have a 
couple of functions that I would prefer to be inline all the time. On 
GCC 3.2.2 I receive no warnings when I compile my code (which makes me 
believe these functions are inlined). I am using the following compile 
options:

cc -o /home/jmars/server/lib/schema.o   -O3 -finline-functions 
-fmerge-constants -fexpensive-optimizations -Wuninitialized -fpic -c 
-Werror -Winline -Wformat -Wno-return-type 
-Werror-implicit-function-declaration -Wparentheses -Wredundant-decls 
-m32 -msse -minline-all-stringops -finline -D_UNICODE -DUNICODE 
-D_COMPILE_UNIX -D__USE_POSIX -D_GNU_SOURCE -DTHREAD_SAFE -D_REENTRANT 
-D_LINUX -I./include -DWSI_EXPAT_BUILD 
-I/home/jmars/server/private/include -I/home/jmars/api/include 
-I/home/jmars/utils/include -I/home/jmars/common/lib/include 
-I/home/jmars/202/wsi/thirdparty/expat/include -D_USE_GC 
./src/cimxml_schema.c

and I get the following warning (this is with GCC 4.1.1 on Linux FC 6) - 
(I don't have direct access to my Sparc machine but the warning was similar)

./src/schema.c: In function ‘scope_encodeformat’:
/home/jmars/server/api/include/apiext.h:382: warning: inlining failed in 
call to ‘freeValidMemory’: --param inline-unit-growth limit reached
./src/schema.c:3285: warning: called from here
make[2]: *** [/home/jmars/proto/temp/server/lib/schema.o] Error 1

The function is question is (in this case INLINE is defined as #define 
INLINE inline):

static INLINE void freeValidMemory(void* vptr, wsi_heap heap)
{
	if (vptr != NULL)
	{
		/* if we are finding leaks, make sure we always call GC_free */
		if (GC_find_leak == 0)
		{
			/* not looking for leaks */
			size_t ptrSize = GC_size(vptr);
			if (ptrSize > 0 && ptrSize <= GC_SMALL_SIZE)
			{
               /* set the first element to 0 (NULL) */
				memset(vptr, 0, 1);
			} else {
				GC_FREE(vptr);
			}
		} else {
			/* looking for leaks, call GC_FREE */
			GC_FREE(vptr);
		}
	}
}

Any thoughts on how I can force this function to be inline?

-Thanks
Jim