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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
This commit is contained in:
Bob Wilson
Bob Wilson
parent
50bd210bde
commit
89f6025db0
@ -1,3 +1,15 @@
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2002-09-30 Bob Wilson <bob.wilson@acm.org>
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* config/xtensa/xtensa.h (REG_CLASS_NAMES, REG_CLASS_CONTENTS):
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Add new RL_REGS register class.
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(PREFERRED_RELOAD_CLASS, PREFERRED_OUTPUT_RELOAD_CLASS):
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Call xtensa_preferred_reload_class for both input and output reloads.
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* config/xtensa/xtensa.c (xtensa_regno_to_class): Use new RL_REGS class.
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(xtensa_preferred_reload_class): Handle output reloads; use RL_REGS
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instead of either AR_REGS or GR_REGS classes.
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(xtensa_secondary_reload_class): Use new RL_REGS class.
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* config/xtensa/xtensa-protos.h (xtensa_preferred_reload_class): Update.
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2002-09-30 John David Anglin <dave@hiauly1.hia.nrc.ca>
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* pa.c (hppa_encode_label): Don't drop '*' from function labels.
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@ -1,5 +1,5 @@
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/* Prototypes of target machine for GNU compiler for Xtensa.
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Copyright (C) 2001 Free Software Foundation, Inc.
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Copyright 2001,2002 Free Software Foundation, Inc.
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Contributed by Bob Wilson (bwilson@tensilica.com) at Tensilica.
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This file is part of GCC.
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@ -89,7 +89,7 @@ extern void xtensa_reorg PARAMS ((rtx));
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extern rtx xtensa_return_addr PARAMS ((int, rtx));
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extern rtx xtensa_builtin_saveregs PARAMS ((void));
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extern enum reg_class xtensa_preferred_reload_class
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PARAMS ((rtx, enum reg_class));
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PARAMS ((rtx, enum reg_class, int));
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extern enum reg_class xtensa_secondary_reload_class
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PARAMS ((enum reg_class, enum machine_mode, rtx, int));
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extern int a7_overlap_mentioned_p PARAMS ((rtx x));
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@ -1,5 +1,5 @@
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/* Subroutines for insn-output.c for Tensilica's Xtensa architecture.
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Copyright (C) 2001 Free Software Foundation, Inc.
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Copyright 2001,2002 Free Software Foundation, Inc.
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Contributed by Bob Wilson (bwilson@tensilica.com) at Tensilica.
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This file is part of GCC.
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@ -107,10 +107,10 @@ const char xtensa_leaf_regs[FIRST_PSEUDO_REGISTER] =
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/* Map hard register number to register class */
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const enum reg_class xtensa_regno_to_class[FIRST_PSEUDO_REGISTER] =
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{
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GR_REGS, SP_REG, GR_REGS, GR_REGS,
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GR_REGS, GR_REGS, GR_REGS, GR_REGS,
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GR_REGS, GR_REGS, GR_REGS, GR_REGS,
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GR_REGS, GR_REGS, GR_REGS, GR_REGS,
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RL_REGS, SP_REG, RL_REGS, RL_REGS,
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RL_REGS, RL_REGS, RL_REGS, GR_REGS,
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RL_REGS, RL_REGS, RL_REGS, RL_REGS,
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RL_REGS, RL_REGS, RL_REGS, RL_REGS,
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AR_REGS, AR_REGS, BR_REGS,
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FP_REGS, FP_REGS, FP_REGS, FP_REGS,
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FP_REGS, FP_REGS, FP_REGS, FP_REGS,
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@ -2614,16 +2614,22 @@ xtensa_va_arg (valist, type)
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enum reg_class
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xtensa_preferred_reload_class (x, class)
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xtensa_preferred_reload_class (x, class, isoutput)
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rtx x;
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enum reg_class class;
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int isoutput;
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{
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if (CONSTANT_P (x) && GET_CODE (x) == CONST_DOUBLE)
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if (!isoutput && CONSTANT_P (x) && GET_CODE (x) == CONST_DOUBLE)
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return NO_REGS;
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/* Don't use sp for reloads! */
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if (class == AR_REGS)
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return GR_REGS;
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/* Don't use the stack pointer or hard frame pointer for reloads!
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The hard frame pointer would normally be OK except that it may
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briefly hold an incoming argument in the prologue, and reload
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won't know that it is live because the hard frame pointer is
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treated specially. */
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if (class == AR_REGS || class == GR_REGS)
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return RL_REGS;
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return class;
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}
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@ -2645,13 +2651,13 @@ xtensa_secondary_reload_class (class, mode, x, isoutput)
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if (!isoutput)
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{
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if (class == FP_REGS && constantpool_mem_p (x))
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return GR_REGS;
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return RL_REGS;
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}
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if (ACC_REG_P (regno))
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return (class == GR_REGS ? NO_REGS : GR_REGS);
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return ((class == GR_REGS || class == RL_REGS) ? NO_REGS : RL_REGS);
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if (class == ACC_REG)
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return (GP_REG_P (regno) ? NO_REGS : GR_REGS);
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return (GP_REG_P (regno) ? NO_REGS : RL_REGS);
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return NO_REGS;
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}
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@ -1,5 +1,5 @@
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/* Definitions of Tensilica's Xtensa target machine for GNU compiler.
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Copyright (C) 2001 Free Software Foundation, Inc.
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Copyright 2001,2002 Free Software Foundation, Inc.
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Contributed by Bob Wilson (bwilson@tensilica.com) at Tensilica.
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This file is part of GCC.
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@ -554,6 +554,7 @@ enum reg_class
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FP_REGS, /* floating point registers */
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ACC_REG, /* MAC16 accumulator */
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SP_REG, /* sp register (aka a1) */
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RL_REGS, /* preferred reload regs (not sp or fp) */
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GR_REGS, /* integer registers except sp */
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AR_REGS, /* all integer registers */
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ALL_REGS, /* all registers */
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@ -574,6 +575,7 @@ enum reg_class
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"FP_REGS", \
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"ACC_REG", \
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"SP_REG", \
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"RL_REGS", \
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"GR_REGS", \
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"AR_REGS", \
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"ALL_REGS" \
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@ -589,6 +591,7 @@ enum reg_class
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{ 0xfff80000, 0x00000007 }, /* floating-point registers */ \
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{ 0x00000000, 0x00000008 }, /* MAC16 accumulator */ \
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{ 0x00000002, 0x00000000 }, /* stack pointer register */ \
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{ 0x0000ff7d, 0x00000000 }, /* preferred reload registers */ \
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{ 0x0000fffd, 0x00000000 }, /* general-purpose registers */ \
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{ 0x0003ffff, 0x00000000 }, /* integer registers */ \
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{ 0xffffffff, 0x0000000f } /* all registers */ \
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@ -704,10 +707,10 @@ extern enum reg_class xtensa_char_to_class[256];
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: FALSE)
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#define PREFERRED_RELOAD_CLASS(X, CLASS) \
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xtensa_preferred_reload_class (X, CLASS)
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xtensa_preferred_reload_class (X, CLASS, 0)
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#define PREFERRED_OUTPUT_RELOAD_CLASS(X, CLASS) \
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(CLASS)
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xtensa_preferred_reload_class (X, CLASS, 1)
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#define SECONDARY_INPUT_RELOAD_CLASS(CLASS, MODE, X) \
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xtensa_secondary_reload_class (CLASS, MODE, X, 0)
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