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re PR rtl-optimization/38948 (unrecognizable insn, postreload.c:395) 

PR target/38948
	* config/cris/cris.h (SECONDARY_RELOAD_CLASS): Handle reload
	requests between special registers.

From-SVN: r152738
This commit is contained in:
Hans-Peter Nilsson 2009-10-13 23:53:20 +00:00 committed by Hans-Peter Nilsson
parent 751cf9544f
commit 2e9f32728a
2 changed files with 17 additions and 6 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2009-10-14 Hans-Peter Nilsson <hp@axis.com>
PR target/38948
* config/cris/cris.h (SECONDARY_RELOAD_CLASS): Handle reload
requests between special registers.
2009-10-13 Andreas Krebbel <Andreas.Krebbel@de.ibm.com>
* config/s390/s390.c (s390_encode_section_info): Handle BLKmode

17
gcc/config/cris/cris.h
View File

@ -644,12 +644,17 @@ enum reg_class
? GENERAL_REGS : (CLASS))
/* We can't move special registers to and from memory in smaller than
word_mode. */
#define SECONDARY_RELOAD_CLASS(CLASS, MODE, X) \
(((CLASS) != SPECIAL_REGS && (CLASS) != MOF_REGS) \
|| GET_MODE_SIZE (MODE) == 4 \
|| !MEM_P (X) \
? NO_REGS : GENERAL_REGS)
word_mode. We also can't move between special registers. Luckily,
-1, as returned by true_regnum for non-sub/registers, is valid as a
parameter to our REGNO_REG_CLASS, returning GENERAL_REGS, so we get
the effect that any X that isn't a special-register is treated as
a non-empty intersection with GENERAL_REGS. */
#define SECONDARY_RELOAD_CLASS(CLASS, MODE, X) \
((((CLASS) == SPECIAL_REGS || (CLASS) == MOF_REGS) \
&& ((GET_MODE_SIZE (MODE) < 4 && MEM_P (X)) \
|| !reg_classes_intersect_p (REGNO_REG_CLASS (true_regnum (X)), \
GENERAL_REGS))) \
? GENERAL_REGS : NO_REGS)
/* FIXME: Fix regrename.c; it should check validity of replacements,
not just with a silly pass-specific macro. We may miss some