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re PR target/56797 (internal compiler error: in extract_insn, at recog.c:2150)

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2013-04-19  Greta Yorsh  <Greta.Yorsh@arm.com>

	PR target/56797
	* config/arm/arm.c (load_multiple_sequence): Require SP
	as base register for loads if SP is in the register list.

From-SVN: r198091
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Greta Yorsh 2013-04-19 13:55:26 +01:00 committed by Greta Yorsh
parent dfe192f58f
commit 67bc84fbb0
2 changed files with 13 additions and 0 deletions
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gcc/ChangeLog
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@ -1,3 +1,9 @@
2013-04-19 Greta Yorsh <Greta.Yorsh@arm.com>
PR target/56797
* config/arm/arm.c (load_multiple_sequence): Require SP
as base register for loads if SP is in the register list.
2013-04-19 Martin Jambor <mjambor@suse.cz>
PR tree-optimization/56718

7
gcc/config/arm/arm.c
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@ -10755,6 +10755,13 @@ load_multiple_sequence (rtx *operands, int nops, int *regs, int *saved_order,
|| (i != nops - 1 && unsorted_regs[i] == base_reg))
return 0;
/* Don't allow SP to be loaded unless it is also the base
register. It guarantees that SP is reset correctly when
an LDM instruction is interruptted. Otherwise, we might
end up with a corrupt stack. */
if (unsorted_regs[i] == SP_REGNUM && base_reg != SP_REGNUM)
return 0;
unsorted_offsets[i] = INTVAL (offset);
if (i == 0 || unsorted_offsets[i] < unsorted_offsets[order[0]])
order[0] = i;