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riscv-gcc-1
Commit 89f6025d by Bob Wilson Committed by Bob Wilson
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xtensa.h (REG_CLASS_NAMES, [...]): Add new RL_REGS register class. 

        * config/xtensa/xtensa.h (REG_CLASS_NAMES, REG_CLASS_CONTENTS):
        Add new RL_REGS register class.
        (PREFERRED_RELOAD_CLASS, PREFERRED_OUTPUT_RELOAD_CLASS):
        Call xtensa_preferred_reload_class for both input and output reloads.
        * config/xtensa/xtensa.c (xtensa_regno_to_class): Use new RL_REGS class.
        (xtensa_preferred_reload_class): Handle output reloads; use RL_REGS
        instead of either AR_REGS or GR_REGS classes.
        (xtensa_secondary_reload_class): Use new RL_REGS class.
        * config/xtensa/xtensa-protos.h (xtensa_preferred_reload_class): Update.

From-SVN: r57666
parent 50bd210b
Showing with 39 additions and 18 deletions
gcc/ChangeLog
2002-09-30 Bob Wilson <bob.wilson@acm.org>
* config/xtensa/xtensa.h (REG_CLASS_NAMES, REG_CLASS_CONTENTS):
Add new RL_REGS register class.
(PREFERRED_RELOAD_CLASS, PREFERRED_OUTPUT_RELOAD_CLASS):
Call xtensa_preferred_reload_class for both input and output reloads.
* config/xtensa/xtensa.c (xtensa_regno_to_class): Use new RL_REGS class.
(xtensa_preferred_reload_class): Handle output reloads; use RL_REGS
instead of either AR_REGS or GR_REGS classes.
(xtensa_secondary_reload_class): Use new RL_REGS class.
* config/xtensa/xtensa-protos.h (xtensa_preferred_reload_class): Update.
2002-09-30 John David Anglin <dave@hiauly1.hia.nrc.ca>
* pa.c (hppa_encode_label): Don't drop '*' from function labels.
......
gcc/config/xtensa/xtensa-protos.h
/* Prototypes of target machine for GNU compiler for Xtensa.
Copyright (C) 2001 Free Software Foundation, Inc.
Copyright 2001,2002 Free Software Foundation, Inc.
Contributed by Bob Wilson (bwilson@tensilica.com) at Tensilica.
This file is part of GCC.
......@@ -89,7 +89,7 @@ extern void xtensa_reorg PARAMS ((rtx));
extern rtx xtensa_return_addr PARAMS ((int, rtx));
extern rtx xtensa_builtin_saveregs PARAMS ((void));
extern enum reg_class xtensa_preferred_reload_class
PARAMS ((rtx, enum reg_class));
PARAMS ((rtx, enum reg_class, int));
extern enum reg_class xtensa_secondary_reload_class
PARAMS ((enum reg_class, enum machine_mode, rtx, int));
extern int a7_overlap_mentioned_p PARAMS ((rtx x));
......
gcc/config/xtensa/xtensa.c
/* Subroutines for insn-output.c for Tensilica's Xtensa architecture.
Copyright (C) 2001 Free Software Foundation, Inc.
Copyright 2001,2002 Free Software Foundation, Inc.
Contributed by Bob Wilson (bwilson@tensilica.com) at Tensilica.
This file is part of GCC.
......@@ -107,10 +107,10 @@ const char xtensa_leaf_regs[FIRST_PSEUDO_REGISTER] =
/* Map hard register number to register class */
const enum reg_class xtensa_regno_to_class[FIRST_PSEUDO_REGISTER] =
{
GR_REGS, SP_REG, GR_REGS, GR_REGS,
GR_REGS, GR_REGS, GR_REGS, GR_REGS,
GR_REGS, GR_REGS, GR_REGS, GR_REGS,
GR_REGS, GR_REGS, GR_REGS, GR_REGS,
RL_REGS, SP_REG, RL_REGS, RL_REGS,
RL_REGS, RL_REGS, RL_REGS, GR_REGS,
RL_REGS, RL_REGS, RL_REGS, RL_REGS,
RL_REGS, RL_REGS, RL_REGS, RL_REGS,
AR_REGS, AR_REGS, BR_REGS,
FP_REGS, FP_REGS, FP_REGS, FP_REGS,
FP_REGS, FP_REGS, FP_REGS, FP_REGS,
......@@ -2614,16 +2614,22 @@ xtensa_va_arg (valist, type)
enum reg_class
xtensa_preferred_reload_class (x, class)
xtensa_preferred_reload_class (x, class, isoutput)
rtx x;
enum reg_class class;
int isoutput;
{
if (CONSTANT_P (x) && GET_CODE (x) == CONST_DOUBLE)
if (!isoutput && CONSTANT_P (x) && GET_CODE (x) == CONST_DOUBLE)
return NO_REGS;
/* Don't use sp for reloads! */
if (class == AR_REGS)
return GR_REGS;
/* Don't use the stack pointer or hard frame pointer for reloads!
The hard frame pointer would normally be OK except that it may
briefly hold an incoming argument in the prologue, and reload
won't know that it is live because the hard frame pointer is
treated specially. */
if (class == AR_REGS || class == GR_REGS)
return RL_REGS;
return class;
}
......@@ -2645,13 +2651,13 @@ xtensa_secondary_reload_class (class, mode, x, isoutput)
if (!isoutput)
{
if (class == FP_REGS && constantpool_mem_p (x))
return GR_REGS;
return RL_REGS;
}
if (ACC_REG_P (regno))
return (class == GR_REGS ? NO_REGS : GR_REGS);
return ((class == GR_REGS || class == RL_REGS) ? NO_REGS : RL_REGS);
if (class == ACC_REG)
return (GP_REG_P (regno) ? NO_REGS : GR_REGS);
return (GP_REG_P (regno) ? NO_REGS : RL_REGS);
return NO_REGS;
}
......
gcc/config/xtensa/xtensa.h
/* Definitions of Tensilica's Xtensa target machine for GNU compiler.
Copyright (C) 2001 Free Software Foundation, Inc.
Copyright 2001,2002 Free Software Foundation, Inc.
Contributed by Bob Wilson (bwilson@tensilica.com) at Tensilica.
This file is part of GCC.
......@@ -554,6 +554,7 @@ enum reg_class
FP_REGS, /* floating point registers */
ACC_REG, /* MAC16 accumulator */
SP_REG, /* sp register (aka a1) */
RL_REGS, /* preferred reload regs (not sp or fp) */
GR_REGS, /* integer registers except sp */
AR_REGS, /* all integer registers */
ALL_REGS, /* all registers */
......@@ -574,6 +575,7 @@ enum reg_class
"FP_REGS", \
"ACC_REG", \
"SP_REG", \
"RL_REGS", \
"GR_REGS", \
"AR_REGS", \
"ALL_REGS" \
......@@ -589,6 +591,7 @@ enum reg_class
{ 0xfff80000, 0x00000007 }, /* floating-point registers */ \
{ 0x00000000, 0x00000008 }, /* MAC16 accumulator */ \
{ 0x00000002, 0x00000000 }, /* stack pointer register */ \
{ 0x0000ff7d, 0x00000000 }, /* preferred reload registers */ \
{ 0x0000fffd, 0x00000000 }, /* general-purpose registers */ \
{ 0x0003ffff, 0x00000000 }, /* integer registers */ \
{ 0xffffffff, 0x0000000f } /* all registers */ \
......@@ -704,10 +707,10 @@ extern enum reg_class xtensa_char_to_class[256];
: FALSE)
#define PREFERRED_RELOAD_CLASS(X, CLASS) \
xtensa_preferred_reload_class (X, CLASS)
xtensa_preferred_reload_class (X, CLASS, 0)
#define PREFERRED_OUTPUT_RELOAD_CLASS(X, CLASS) \
(CLASS)
xtensa_preferred_reload_class (X, CLASS, 1)
#define SECONDARY_INPUT_RELOAD_CLASS(CLASS, MODE, X) \
xtensa_secondary_reload_class (CLASS, MODE, X, 0)
......
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