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function.c (fixup_var_refs_1): For paradoxical (subreg VAR), replace VAR, don't try the subreg.

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* function.c (fixup_var_refs_1) <SET, handling VAR in SET_SRC>:
	For paradoxical (subreg VAR), replace VAR, don't try the subreg.

From-SVN: r52217
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Hans-Peter Nilsson 2002-04-12 11:31:25 +00:00 committed by Hans-Peter Nilsson
parent 4b72e8edac
commit 1ab3e58a2f
2 changed files with 27 additions and 8 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2002-04-12 Hans-Peter Nilsson <hp@bitrange.com>
* function.c (fixup_var_refs_1) <SET, handling VAR in SET_SRC>:
For paradoxical (subreg VAR), replace VAR, don't try the subreg.
Fri Apr 12 10:51:38 2002 J"orn Rennecke <joern.rennecke@superh.com>
* sh.c (broken_move): Constant 0. / 1. load is OK if there is

30
gcc/function.c
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@ -2370,15 +2370,29 @@ fixup_var_refs_1 (var, promoted_mode, loc, insn, replacements, no_share)
{
rtx pat, last;
replacement = find_fixup_replacement (replacements, SET_SRC (x));
if (replacement->new)
SET_SRC (x) = replacement->new;
else if (GET_CODE (SET_SRC (x)) == SUBREG)
SET_SRC (x) = replacement->new
= fixup_memory_subreg (SET_SRC (x), insn, 0);
if (GET_CODE (SET_SRC (x)) == SUBREG
&& (GET_MODE_SIZE (GET_MODE (SET_SRC (x)))
> GET_MODE_SIZE (GET_MODE (var))))
{
/* This (subreg VAR) is now a paradoxical subreg. We need
to replace VAR instead of the subreg. */
replacement = find_fixup_replacement (replacements, var);
if (replacement->new == NULL_RTX)
replacement->new = gen_reg_rtx (GET_MODE (var));
SUBREG_REG (SET_SRC (x)) = replacement->new;
}
else
SET_SRC (x) = replacement->new
= fixup_stack_1 (SET_SRC (x), insn);
{
replacement = find_fixup_replacement (replacements, SET_SRC (x));
if (replacement->new)
SET_SRC (x) = replacement->new;
else if (GET_CODE (SET_SRC (x)) == SUBREG)
SET_SRC (x) = replacement->new
= fixup_memory_subreg (SET_SRC (x), insn, 0);
else
SET_SRC (x) = replacement->new
= fixup_stack_1 (SET_SRC (x), insn);
}
if (recog_memoized (insn) >= 0)
return;