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re PR target/84209 ([avr] Don't split SP in split2)

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PR target/84209
	* config/avr/avr.h (GENERAL_REGNO_P, GENERAL_REG_P): New macros.
	* config/avr/avr.md: Only post-reload split REG-REG moves if
	either register is REGERAL_REG_P.

From-SVN: r257440
This commit is contained in:
Georg-Johann Lay 2018-02-07 09:59:52 +00:00 committed by Denis Chertykov
parent 07a6816e61
commit 3924c9be0b
3 changed files with 12 additions and 0 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2018-02-07 Georg-Johann Lay <avr@gjlay.de>
PR target/84209
* config/avr/avr.h (GENERAL_REGNO_P, GENERAL_REG_P): New macros.
* config/avr/avr.md: Only post-reload split REG-REG moves if
either register is REGERAL_REG_P.
2018-02-07 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/84235

3
gcc/config/avr/avr.h
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@ -153,6 +153,9 @@ FIXME: DRIVER_SELF_SPECS has changed.
#define FIRST_PSEUDO_REGISTER 36
#define GENERAL_REGNO_P(N) IN_RANGE (N, 2, 31)
#define GENERAL_REG_P(X) (REG_P (X) && GENERAL_REGNO_P (REGNO (X)))
#define FIXED_REGISTERS {\
1,1,/* r0 r1 */\
0,0,/* r2 r3 */\

2
gcc/config/avr/avr.md
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@ -3368,6 +3368,8 @@
(match_operand:HI 1 "reg_or_0_operand"))]
"optimize
&& reload_completed
&& GENERAL_REG_P (operands[0])
&& (operands[1] == const0_rtx || GENERAL_REG_P (operands[1]))
&& (!AVR_HAVE_MOVW
|| const0_rtx == operands[1])"
[(set (match_dup 2) (match_dup 3))