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re PR target/55876 (internal compiler error: in gen_rtx_SUBREG, at emit-rtl.c:776)

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2013-01-15  Tom de Vries  <tom@codesourcery.com>

	PR target/55876
	* optabs.c (widen_operand): Use gen_lowpart instead of gen_rtx_SUBREG.
	Update comment.

From-SVN: r195212
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Tom de Vries 2013-01-15 17:24:55 +00:00 • committed by Tom de Vries
parent 0e80383ffb
commit a78a8cc408
2 changed files with 8 additions and 2 deletions
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gcc/ChangeLog
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@ -1,3 +1,9 @@
2013-01-15 Tom de Vries <tom@codesourcery.com>
PR target/55876
* optabs.c (widen_operand): Use gen_lowpart instead of gen_rtx_SUBREG.
Update comment.
2013-01-15 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/pr55153

4
gcc/optabs.c
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@ -325,10 +325,10 @@ widen_operand (rtx op, enum machine_mode mode, enum machine_mode oldmode,
&& SUBREG_PROMOTED_UNSIGNED_P (op) == unsignedp))
return convert_modes (mode, oldmode, op, unsignedp);
/* If MODE is no wider than a single word, we return a paradoxical
/* If MODE is no wider than a single word, we return a lowpart or paradoxical
SUBREG. */
if (GET_MODE_SIZE (mode) <= UNITS_PER_WORD)
return gen_rtx_SUBREG (mode, force_reg (GET_MODE (op), op), 0);
return gen_lowpart (mode, force_reg (GET_MODE (op), op));
/* Otherwise, get an object of MODE, clobber it, and set the low-order
part to OP. */