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riscv-gcc-1
Commit 564d80f4 by Jan Hubicka Committed by Jan Hubicka
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i386.h (FIRST_PSEUDO_REGISTER): Set to 21. 

	* i386.h (FIRST_PSEUDO_REGISTER): Set to 21.
	(FIXED_REGISTERS, CALL_USED_REGISTERS,
	 REG_ALLOC_ORDER): Add frame pointer
	(FRAME_POINTER_REGNUM): Set to 20
	(HARD_FRAME_POINTER_REGNUM): New macro.
	(ELIMINABLE_REGS): Eliminate ARG_POINTER and FRAME_POINTER
	to HARD_FRAME_POINTER.
	(REGNO_OK_FOR_BASE_P): Accept FRAME_POINTER_REGNUM
	(REG_OK_FOR_INDEX_NONSTRICT_P): Likewise.
	(REG_OK_FOR_BASE_NONSTRICT_P): Likewise.
	(HI_REGISTER_NAMES): Add "frame".
	(CAN_ELIMINATE): Handle FRAME_POINTER_REGNUM elimination.
	(debug_reg): Handle FRAME_POINTER_REGNUM.
	(reg_class): Add arg pointer and frame pointer to NON_Q_REGS,
	GENERAL_REGS and INDEX_REGS.
	* i386.c (SAVED_REGS_FIRST): new macro.
	(AT_BP): Use hard_frame_pointer_rtx instead of frame_pointer_rtx
	(ix86_decompose_address, memory_address_length): Likewise.
	(regclass_map): Add frame pointer.
	(call_insn_operand): Handle frame_pointer_rtx.
	(reg_no_sp_operand): Likewise.
	(ix86_decompose_address): Handle frame_pointer_rtx as stack_pointer_rtx.
	(print_operand, legitimize_pic_address): Fix formating.
	(ix86_compute_frame_size): Make static, update prototype, new
	parameters padding1, padding2, use ix86_nsaved_regs, use
	stack_alignment_needed.
	(ix86_initial_elimination_offset): Handle FRAME_POINTER_REGNUM
	to HARD_FRAME_POINTER_REGNUM conversions.
	(ix86_expand_prologue): Handle SAVED_REGS_FIRST prologues.
	(ix86_expand_epilogue): Handle SAVED_REGS_FIRST epilogues.
	(print_reg): Abort on FRAME_POINTER_REGNUM

From-SVN: r31587
parent 2247f6ed
Showing with 67 additions and 18 deletions
gcc/ChangeLog
Mon Jan 24 17:37:31 MET 2000 Jan Hubicka <jh@suse.cz>
* i386.h (FIRST_PSEUDO_REGISTER): Set to 21.
(FIXED_REGISTERS, CALL_USED_REGISTERS,
REG_ALLOC_ORDER): Add frame pointer
(FRAME_POINTER_REGNUM): Set to 20
(HARD_FRAME_POINTER_REGNUM): New macro.
(ELIMINABLE_REGS): Eliminate ARG_POINTER and FRAME_POINTER
to HARD_FRAME_POINTER.
(REGNO_OK_FOR_BASE_P): Accept FRAME_POINTER_REGNUM
(REG_OK_FOR_INDEX_NONSTRICT_P): Likewise.
(REG_OK_FOR_BASE_NONSTRICT_P): Likewise.
(HI_REGISTER_NAMES): Add "frame".
(CAN_ELIMINATE): Handle FRAME_POINTER_REGNUM elimination.
(debug_reg): Handle FRAME_POINTER_REGNUM.
(reg_class): Add arg pointer and frame pointer to NON_Q_REGS,
GENERAL_REGS and INDEX_REGS.
* i386.c (SAVED_REGS_FIRST): new macro.
(AT_BP): Use hard_frame_pointer_rtx instead of frame_pointer_rtx
(ix86_decompose_address, memory_address_length): Likewise.
(regclass_map): Add frame pointer.
(call_insn_operand): Handle frame_pointer_rtx.
(reg_no_sp_operand): Likewise.
(ix86_decompose_address): Handle frame_pointer_rtx as stack_pointer_rtx.
(print_operand, legitimize_pic_address): Fix formating.
(ix86_compute_frame_size): Make static, update prototype, new
parameters padding1, padding2, use ix86_nsaved_regs, use
stack_alignment_needed.
(ix86_initial_elimination_offset): Handle FRAME_POINTER_REGNUM
to HARD_FRAME_POINTER_REGNUM conversions.
(ix86_expand_prologue): Handle SAVED_REGS_FIRST prologues.
(ix86_expand_epilogue): Handle SAVED_REGS_FIRST epilogues.
(print_reg): Abort on FRAME_POINTER_REGNUM
Mon Jan 24 16:50:08 MET 2000 Jan Hubicka <jh@suse.cz>
* i386.h (PREDICATE_CODES): Add aligned_operand.
......
gcc/config/i386/i386.h
......@@ -619,7 +619,7 @@ extern int ix86_arch;
eliminated during reloading in favor of either the stack or frame
pointer. */
#define FIRST_PSEUDO_REGISTER 20
#define FIRST_PSEUDO_REGISTER 21
/* Number of hardware registers that go into the DWARF-2 unwind info.
If not defined, equals FIRST_PSEUDO_REGISTER. */
......@@ -631,7 +631,9 @@ extern int ix86_arch;
On the 80386, the stack pointer is such, as is the arg pointer. */
#define FIXED_REGISTERS \
/*ax,dx,cx,bx,si,di,bp,sp,st,st1,st2,st3,st4,st5,st6,st7,arg,flags,fpsr, dir*/ \
{ 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0 }
{ 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, \
/*frame */ \
1}
/* 1 for registers not available across function calls.
These must include the FIXED_REGISTERS and also any
......@@ -642,7 +644,9 @@ extern int ix86_arch;
#define CALL_USED_REGISTERS \
/*ax,dx,cx,bx,si,di,bp,sp,st,st1,st2,st3,st4,st5,st6,st7,arg,flags,fpsr, dir*/ \
{ 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 }
{ 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
/*frame */ \
1}
/* Order in which to allocate registers. Each register must be
listed once, even those in FIXED_REGISTERS. List frame pointer
......@@ -665,7 +669,9 @@ extern int ix86_arch;
#define REG_ALLOC_ORDER \
/*ax,dx,cx,bx,si,di,bp,sp,st,st1,st2,st3,st4,st5,st6,st7,arg,cc,fpsr, dir*/ \
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,17, 18, 19 }
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,17, 18, 19, \
/*frame */ \
20}
/* A C statement (sans semicolon) to choose the order in which to
allocate hard registers for pseudo-registers local to a basic
......@@ -762,7 +768,10 @@ extern int ix86_arch;
#define STACK_POINTER_REGNUM 7
/* Base register for access to local variables of the function. */
#define FRAME_POINTER_REGNUM 6
#define HARD_FRAME_POINTER_REGNUM 6
/* Base register for access to local variables of the function. */
#define FRAME_POINTER_REGNUM 20
/* First floating point reg */
#define FIRST_FLOAT_REG 8
......@@ -853,7 +862,7 @@ enum reg_class
AREG, DREG, CREG, BREG, SIREG, DIREG,
AD_REGS, /* %eax/%edx for DImode */
Q_REGS, /* %eax %ebx %ecx %edx */
NON_Q_REGS, /* %esi %edi %ebp %esi */
NON_Q_REGS, /* %esi %edi %ebp %esp */
INDEX_REGS, /* %eax %ebx %ecx %edx %esi %edi %ebp */
GENERAL_REGS, /* %eax %ebx %ecx %edx %esi %edi %ebp %esp */
FP_TOP_REG, FP_SECOND_REG, /* %st(0) %st(1) */
......@@ -893,13 +902,13 @@ enum reg_class
{0x10}, {0x20}, /* SIREG, DIREG */ \
{0x3}, /* AD_REGS */ \
{0xf}, /* Q_REGS */ \
{0xf0}, /* NON_Q_REGS */ \
{0x1100f0}, /* NON_Q_REGS */ \
{0x7f}, /* INDEX_REGS */ \
{0x100ff}, /* GENERAL_REGS */ \
{0x1100ff}, /* GENERAL_REGS */ \
{0x0100}, {0x0200}, /* FP_TOP_REG, FP_SECOND_REG */ \
{0xff00}, /* FLOAT_REGS */ \
{0x1ffff}, /* FLOAT_INT_REGS */ \
{0x7ffff} \
{0x11ffff}, /* FLOAT_INT_REGS */ \
{0x17ffff} \
}
/* The same information, inverted:
......@@ -1392,15 +1401,16 @@ do { \
followed by "to". Eliminations of the same "from" register are listed
in order of preference.
We have two registers that can be eliminated on the i386. First, the
frame pointer register can often be eliminated in favor of the stack
pointer register. Secondly, the argument pointer register can always be
eliminated; it is replaced with either the stack or frame pointer. */
We have three registers that can be eliminated on the i386. First, the
hard frame pointer register can often be eliminated in favor of the stack
pointer register. Secondly, the argument and frame pointer register can
always be eliminated; They are replaced with either the stack or frame pointer. */
#define ELIMINABLE_REGS \
{{ ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
{ ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \
{ FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}}
{ ARG_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM}, \
{ FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
{ FRAME_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM}} \
/* Given FROM and TO register numbers, say whether this elimination is allowed.
Frame pointer elimination is automatically handled.
......@@ -1411,7 +1421,8 @@ do { \
All other eliminations are valid. */
#define CAN_ELIMINATE(FROM, TO) \
((FROM) == ARG_POINTER_REGNUM && (TO) == STACK_POINTER_REGNUM \
((((FROM) == ARG_POINTER_REGNUM || (FROM) == FRAME_POINTER_REGNUM) \
&& (TO) == STACK_POINTER_REGNUM) \
? ! frame_pointer_needed \
: 1)
......@@ -1444,6 +1455,7 @@ do { \
#define REGNO_OK_FOR_BASE_P(REGNO) \
((REGNO) <= STACK_POINTER_REGNUM \
|| (REGNO) == ARG_POINTER_REGNUM \
|| (REGNO) == FRAME_POINTER_REGNUM \
|| (unsigned) reg_renumber[REGNO] <= STACK_POINTER_REGNUM)
#define REGNO_OK_FOR_SIREG_P(REGNO) ((REGNO) == 4 || reg_renumber[REGNO] == 4)
......@@ -1471,6 +1483,7 @@ do { \
#define REG_OK_FOR_BASE_NONSTRICT_P(X) \
(REGNO (X) <= STACK_POINTER_REGNUM \
|| REGNO (X) == ARG_POINTER_REGNUM \
|| REGNO (X) == FRAME_POINTER_REGNUM \
|| REGNO (X) >= FIRST_PSEUDO_REGISTER)
#define REG_OK_FOR_STRREG_NONSTRICT_P(X) \
......@@ -2153,7 +2166,7 @@ while (0)
#define HI_REGISTER_NAMES \
{"ax","dx","cx","bx","si","di","bp","sp", \
"st","st(1)","st(2)","st(3)","st(4)","st(5)","st(6)","st(7)","", \
"flags","fpsr", "dirflag" }
"flags","fpsr", "dirflag", "frame" }
#define REGISTER_NAMES HI_REGISTER_NAMES
......@@ -2365,6 +2378,8 @@ do { long l; \
{ fputs ("fpsr", FILE); break; } \
if (REGNO (X) == ARG_POINTER_REGNUM) \
{ fputs ("argp", FILE); break; } \
if (REGNO (X) == FRAME_POINTER_REGNUM) \
{ fputs ("frame", FILE); break; } \
if (STACK_TOP_P (X)) \
{ fputs ("st(0)", FILE); break; } \
if (FP_REG_P (X)) \
......
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