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c4x.h (PREFERRED_RELOAD_CLASS): Change to restrict the reloading of framepointer + constant to ADDR_REGS class. 

2000-01-27 Herman A.J. ten Brugge <Haj.Ten.Brugge@net.HCC.nl>

	* c4x.h (PREFERRED_RELOAD_CLASS): Change to restrict the reloading
	of framepointer + constant to ADDR_REGS class.
	* c4x.md (addqi3, addqi3_noclobber_reload): Update.
	* c4x.c (std_or_reg_operand): New function.
	* c4x-protos.h (std_or_reg_operand): Prototype it.

From-SVN: r31681
This commit is contained in:
Herman A.J. ten Brugge 2000-01-29 04:01:24 +01:00 committed by Michael Hayes
parent 29a963d303
commit ed3614cd74
5 changed files with 43 additions and 25 deletions
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8
gcc/ChangeLog
View File

@ -1,3 +1,11 @@
2000-01-27 Herman A.J. ten Brugge <Haj.Ten.Brugge@net.HCC.nl>
* c4x.h (PREFERRED_RELOAD_CLASS): Change to restrict the reloading
of framepointer + constant to ADDR_REGS class.
* c4x.md (addqi3, addqi3_noclobber_reload): Update.
* c4x.c (std_or_reg_operand): New function.
* c4x-protos.h (std_or_reg_operand): Prototype it.
2000-01-29 Herman A.J. ten Brugge <Haj.Ten.Brugge@net.HCC.nl>
* t-c4x: Change qi,qf,di,df into si,sf,hi,hf to generate same

2
gcc/config/c4x/c4x-protos.h
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@ -126,6 +126,8 @@ extern int ext_reg_operand PARAMS ((rtx, enum machine_mode));
extern int std_reg_operand PARAMS ((rtx, enum machine_mode));
extern int std_or_reg_operand PARAMS ((rtx, enum machine_mode));
extern int dst_operand PARAMS ((rtx, enum machine_mode));
extern int src_operand PARAMS ((rtx, enum machine_mode));

12
gcc/config/c4x/c4x.c
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@ -2970,6 +2970,18 @@ std_reg_operand (op, mode)
}
/* Standard precision or normal register. */
int
std_or_reg_operand (op, mode)
rtx op;
enum machine_mode mode;
{
if (reload_in_progress)
return std_reg_operand (op, mode);
return reg_operand (op, mode);
}
/* Address register. */
int

13
gcc/config/c4x/c4x.h
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@ -815,7 +815,17 @@ enum reg_class
#define REGNO_OK_FOR_INDEX_P(REGNO) \
(IS_INDEX_REGNO(REGNO) || IS_INDEX_REGNO((unsigned)reg_renumber[REGNO]))
#define PREFERRED_RELOAD_CLASS(X, CLASS) (CLASS)
/* If we have to generate framepointer + constant prefer an ADDR_REGS
register. This avoids using EXT_REGS in addqi3_noclobber_reload. */
#define PREFERRED_RELOAD_CLASS(X, CLASS) \
(GET_CODE (X) == PLUS \
&& GET_MODE (X) == Pmode \
&& GET_CODE (XEXP ((X), 0)) == REG \
&& GET_MODE (XEXP ((X), 0)) == Pmode \
&& REGNO (XEXP ((X), 0)) == FRAME_POINTER_REGNUM \
&& GET_CODE (XEXP ((X), 1)) == CONST_INT \
? ADDR_REGS : (CLASS))
#define LIMIT_RELOAD_CLASS(X, CLASS) (CLASS)
@ -2608,6 +2618,7 @@ if (final_sequence != NULL_RTX) \
{"ext_low_reg_operand", {REG, SUBREG}}, \
{"ext_reg_operand", {REG, SUBREG}}, \
{"std_reg_operand", {REG, SUBREG}}, \
{"std_or_reg_operand", {REG, SUBREG}}, \
{"addr_reg_operand", {REG, SUBREG}}, \
{"index_reg_operand", {REG, SUBREG}}, \
{"dp_reg_operand", {REG}}, \

33
gcc/config/c4x/c4x.md
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@ -1755,7 +1755,7 @@
; so we must emit the pattern that doesn't clobber CC.
;
(define_expand "addqi3"
[(parallel [(set (match_operand:QI 0 "reg_operand" "")
[(parallel [(set (match_operand:QI 0 "std_or_reg_operand" "")
(plus:QI (match_operand:QI 1 "src_operand" "")
(match_operand:QI 2 "src_operand" "")))
(clobber (reg:CC_NOOV 21))])]
@ -1881,31 +1881,16 @@
; (set (mem (reg ar0)) (plus (reg ar3) (const_int 8))).
; This is an invalid C4x insn but if we don't provide a pattern
; for it, it will be considered to be a move insn for reloading.
; The nasty bit is that a GENERAL_REGS class register, say r0,
; may be allocated to reload the PLUS and thus gen_reload will
; emit an add insn that may clobber CC.
(define_insn "*addqi3_noclobber_reload"
[(set (match_operand:QI 0 "reg_operand" "=a*c,a*c,a*c,!*d,!*d,!*d")
(plus:QI (match_operand:QI 1 "src_operand" "%0,rR,rS<>,%0,rR,rS<>")
(match_operand:QI 2 "src_operand" "rIm,JR,rS<>,rIm,JR,rS<>")))]
[(set (match_operand:QI 0 "std_reg_operand" "=c,c,c")
(plus:QI (match_operand:QI 1 "src_operand" "%0,rR,rS<>")
(match_operand:QI 2 "src_operand" "rIm,JR,rS<>")))]
"reload_in_progress"
"*
if (IS_STD_REG (operands[0]))
{
if (which_alternative == 0 || which_alternative == 3)
return \"addi\\t%2,%0\";
else
return \"addi3\\t%2,%1,%0\";
}
else
{
if (which_alternative == 0 || which_alternative == 3)
return \"push\\tst\\n\\taddi\\t%2,%0\\n\\tpop\\tst\";
else
return \"push\\tst\\n\\taddi3\\t%2,%1,%0\\n\\tpop\\tst\";
}
"
[(set_attr "type" "binary,binary,binary,multi,multi,multi")])
"@
addi\\t%2,%0
addi3\\t%2,%1,%0
addi3\\t%2,%1,%0"
[(set_attr "type" "binary,binary,binary")])
; Default to int16 data attr.