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(reg_rtx_no, regno_pointer_{flag_length,align): New decls.

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(REGNO_POINTER_ALIGN): New macro.

From-SVN: r10866
This commit is contained in:
Richard Kenner 1995-12-27 15:21:34 -05:00
parent 86fe05e0be
commit 40f954f62b
1 changed files with 12 additions and 1 deletions
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13
gcc/regs.h
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@ -1,5 +1,5 @@
/* Define per-register tables for data flow info and register allocation.
Copyright (C) 1987, 1993, 1994 Free Software Foundation, Inc.
Copyright (C) 1987, 1993, 1994, 1995 Free Software Foundation, Inc.
This file is part of GNU CC.
@ -136,12 +136,23 @@ extern int *regno_last_uid;
extern int *regno_last_note_uid;
/* This is reset to LAST_VIRTUAL_REGISTER + 1 at the start of each function.
After rtl generation, it is 1 plus the largest register number used. */
extern int reg_rtx_no;
/* Vector indexed by regno; contains 1 for a register is considered a pointer.
Reloading, etc. will use a pointer register rather than a non-pointer
as the base register in an address, when there is a choice of two regs. */
extern char *regno_pointer_flag;
#define REGNO_POINTER_FLAG(REGNO) regno_pointer_flag[REGNO]
extern int regno_pointer_flag_length;
/* Similarly, contains the alignment in bytes for a register that contains
a pointer, if known. */
extern char *regno_pointer_align;
#define REGNO_POINTER_ALIGN(REGNO) regno_pointer_align[REGNO]
/* List made of EXPR_LIST rtx's which gives pairs of pseudo registers
that have to go in the same hard reg. */