ack/util/ncgg/regvar.h

/*
 * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
 * See the copyright notice in the ACK home directory, in the file "Copyright".
 */
/* $Id$ */

#define ANY_REGVAR	0x1
#define SL_REGVAR	0x2
#define DL_REGVAR	0x4

extern int rvused;
extern int reglap;
extern int nregvar[4];
extern int rvsize[4];
extern int rvnumbers[4][MAXREGVAR];
Added copyright notice 1987-03-09 19:15:41 +00:00			`/*`
			`* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.`
			`* See the copyright notice in the ACK home directory, in the file "Copyright".`
			`*/`
Header --> Id 1994-06-24 11:31:16 +00:00			`/* $Id$ */`
* empty log message * 1984-12-17 15:13:39 +00:00
			`#define ANY_REGVAR 0x1`
			`#define SL_REGVAR 0x2`
			`#define DL_REGVAR 0x4`

			`extern int rvused;`
Add reglap to ncg. Add 4-byte reg_float to PowerPC ncg. The new feature "reglap" allows two sizes of floating-point register variables (reg_float), if each register overlaps a single register of the other size. PowerPC ncg uses reglap to define 4-byte instances of f14 to f31 that overlap the 8-byte instances. When ncgg sees the definition of fs14("f14")=f14, it removes the 8-byte f14 from its rvnumbers array, and adds the 4-byte fs14 in its place. Later, when ncg puts a variable in fs14, if it is an 8-byte variable, then ncg switches to the 8-byte f14. The code has /* reglap */ comments in util/ncgg or #ifdef REGLAP in mach/proto/ncg reglap became necessary because my commit a20b87c caused PowerPC ego to allocate reg_float in both 4-byte and 8-byte sizes. 2017-10-14 16:40:04 +00:00			`extern int reglap;`
* empty log message * 1984-12-17 15:13:39 +00:00			`extern int nregvar[4];`
			`extern int rvsize[4];`
			`extern int rvnumbers[4][MAXREGVAR];`