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re PR rtl-optimization/55719 (ICE: Segmentation fault)

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2013-01-11  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>

	PR target/55719
	* config/s390/s390.c (s390_preferred_reload_class): Do not return
	NO_REGS for larl operands.
	(s390_reload_larl_operand): Use s390_load_address instead of
	emit_move_insn.

2013-01-11  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>

	PR target/55719
	* gcc.target/s390/pr55719.c: New testcase.

From-SVN: r195109
This commit is contained in:
Andreas Krebbel 2013-01-11 16:43:49 +00:00
parent 980d081296
commit 1abcd5eb46
3 changed files with 30 additions and 3 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
2013-01-11 Andreas Krebbel <Andreas.Krebbel@de.ibm.com>
PR target/55719
* config/s390/s390.c (s390_preferred_reload_class): Do not return
NO_REGS for larl operands.
(s390_reload_larl_operand): Use s390_load_address instead of
emit_move_insn.
2013-01-11 Richard Biener <rguenther@suse.de>
* tree-cfg.c (verify_node_sharing_1): Split out from ...

18
gcc/config/s390/s390.c
View File

@ -2978,9 +2978,23 @@ s390_preferred_reload_class (rtx op, reg_class_t rclass)
it is most likely being used as an address, so
prefer ADDR_REGS. If 'class' is not a superset
of ADDR_REGS, e.g. FP_REGS, reject this reload. */
case CONST:
/* A larl operand with odd addend will get fixed via secondary
reload. So don't request it to be pushed into literal
pool. */
if (TARGET_CPU_ZARCH
&& GET_CODE (XEXP (op, 0)) == PLUS
&& GET_CODE (XEXP (XEXP(op, 0), 0)) == SYMBOL_REF
&& GET_CODE (XEXP (XEXP(op, 0), 1)) == CONST_INT)
{
if (reg_class_subset_p (ADDR_REGS, rclass))
return ADDR_REGS;
else
return NO_REGS;
}
/* fallthrough */
case LABEL_REF:
case SYMBOL_REF:
case CONST:
if (!legitimate_reload_constant_p (op))
return NO_REGS;
/* fallthrough */
@ -3061,7 +3075,7 @@ s390_reload_larl_operand (rtx reg, rtx addr, rtx scratch)
emit_move_insn (scratch, symref);
/* Increment the address using la in order to avoid clobbering cc. */
emit_move_insn (reg, gen_rtx_PLUS (Pmode, scratch, const1_rtx));
s390_load_address (reg, gen_rtx_PLUS (Pmode, scratch, const1_rtx));
}
}

7
gcc/testsuite/ChangeLog
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@ -1,4 +1,9 @@
2012-01-11 Richard Guenther <rguenther@suse.de>
2013-01-11 Andreas Krebbel <Andreas.Krebbel@de.ibm.com>
PR target/55719
* gcc.target/s390/pr55719.c: New testcase.
2013-01-11 Richard Guenther <rguenther@suse.de>
PR tree-optimization/44061
* gcc.dg/pr44061.c: New testcase.