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From-SVN: r979
This commit is contained in:
Richard Stallman 1992-05-14 21:37:58 +00:00
parent 282ea52ada
commit b7a091350e
1 changed files with 14 additions and 2 deletions
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16
gcc/expmed.c
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@ -972,7 +972,13 @@ extract_bit_field (str_rtx, bitsize, bitnum, unsignedp,
if (GET_MODE (xtarget) != maxmode)
{
if (GET_CODE (xtarget) == REG)
xspec_target_subreg = xtarget = gen_lowpart (maxmode, xtarget);
{
int wider = (GET_MODE_SIZE (maxmode)
> GET_MODE_SIZE (GET_MODE (xtarget)));
xtarget = gen_lowpart (maxmode, xtarget);
if (wider)
xspec_target_subreg = xtarget;
}
else
xtarget = gen_reg_rtx (maxmode);
}
@ -1098,7 +1104,13 @@ extract_bit_field (str_rtx, bitsize, bitnum, unsignedp,
if (GET_MODE (xtarget) != maxmode)
{
if (GET_CODE (xtarget) == REG)
xspec_target_subreg = xtarget = gen_lowpart (maxmode, xtarget);
{
int wider = (GET_MODE_SIZE (maxmode)
> GET_MODE_SIZE (GET_MODE (xtarget)));
xtarget = gen_lowpart (maxmode, xtarget);
if (wider)
xspec_target_subreg = xtarget;
}
else
xtarget = gen_reg_rtx (maxmode);
}