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re PR target/62254 (gcc-4.9 ICEs on linux kernel zlib for armv3)

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PR target/62254
	* config/arm/arm.c (arm_reload_out_hi): Add code to handle the
	case where we are already provided with an SImode SUBREG.

From-SVN: r234568
This commit is contained in:
Nick Clifton 2016-03-30 12:48:42 +00:00 committed by Nick Clifton
parent 41ec61d3ef
commit 1f73ef6c45
2 changed files with 23 additions and 4 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2016-03-30 Nick Clifton <nickc@redhat.com>
PR target/62254
* config/arm/arm.c (arm_reload_out_hi): Add code to handle the
case where we are already provided with an SImode SUBREG.
2016-03-30 Michael Matz <matz@suse.de>
Richard Biener <rguenther@suse.de>

21
gcc/config/arm/arm.c
View File

@ -15596,14 +15596,27 @@ arm_reload_out_hi (rtx *operands)
/* The slot is out of range, or was dressed up in a SUBREG. */
base = reg_equiv_address (REGNO (ref));
/* PR 62554: If there is no equivalent memory location then just move
/* PR 62254: If there is no equivalent memory location then just move
the value as an SImode register move. This happens when the target
architecture variant does not have an HImode register move. */
if (base == NULL)
{
gcc_assert (REG_P (outval));
emit_insn (gen_movsi (gen_rtx_SUBREG (SImode, ref, 0),
gen_rtx_SUBREG (SImode, outval, 0)));
gcc_assert (REG_P (outval) || SUBREG_P (outval));
if (REG_P (outval))
{
emit_insn (gen_movsi (gen_rtx_SUBREG (SImode, ref, 0),
gen_rtx_SUBREG (SImode, outval, 0)));
}
else /* SUBREG_P (outval) */
{
if (GET_MODE (SUBREG_REG (outval)) == SImode)
emit_insn (gen_movsi (gen_rtx_SUBREG (SImode, ref, 0),
SUBREG_REG (outval)));
else
/* FIXME: Handle other cases ? */
gcc_unreachable ();
}
return;
}
}