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We should not strip subregs of non-scalars during shift expansion.

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* expmed.c (expand_shift_1): Only strip scalar integer subregs.

From-SVN: r196027
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David S. Miller 2013-02-13 20:25:41 +00:00 committed by David S. Miller
parent 8a04a774db
commit 7afe28013f
2 changed files with 6 additions and 2 deletions
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gcc/ChangeLog
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@ -1,3 +1,7 @@
2013-02-13 David S. Miller <davem@davemloft.net>
* expmed.c (expand_shift_1): Only strip scalar integer subregs.
2013-02-13 Vladimir Makarov <vmakarov@redhat.com>
PR target/56184

4
gcc/expmed.c
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@ -2116,8 +2116,8 @@ expand_shift_1 (enum tree_code code, enum machine_mode mode, rtx shifted,
% GET_MODE_BITSIZE (mode));
else if (GET_CODE (op1) == SUBREG
&& subreg_lowpart_p (op1)
&& INTEGRAL_MODE_P (GET_MODE (SUBREG_REG (op1)))
&& INTEGRAL_MODE_P (GET_MODE (op1)))
&& SCALAR_INT_MODE_P (GET_MODE (SUBREG_REG (op1)))
&& SCALAR_INT_MODE_P (GET_MODE (op1)))
op1 = SUBREG_REG (op1);
}