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reload1.c (reload): Undo 2005-04-20 change.

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* reload1.c (reload): Undo 2005-04-20 change.  Make sure we detect
	the correct set of init_insns that need deletion.

From-SVN: r100481
This commit is contained in:
Bernd Schmidt 2005-06-02 08:39:06 +00:00 committed by Bernd Schmidt
parent d29e107f39
commit bf8f8254ea
2 changed files with 13 additions and 11 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2005-06-02 Bernd Schmidt <bernd.schmidt@analog.com>
* reload1.c (reload): Undo 2005-04-20 change. Make sure we detect
the correct set of init_insns that need deletion.
2005-06-02 Kaz Kojima <kkojima@gcc.gnu.org>
* config/sh/sh.h (TARGET_FPU_DOUBLE): Use MASK_SH4.

19
gcc/reload1.c
View File

@ -752,7 +752,7 @@ reload (rtx first, int global)
for equivalences. This is overly conservative as
we could find all sets of the destination pseudo
and remove them as they should be redundant. */
if (memory_operand (x, VOIDmode) && ! MEM_READONLY_P (x))
if (memory_operand (x, VOIDmode))
{
/* Always unshare the equivalence, so we can
substitute into this insn without touching the
@ -787,14 +787,8 @@ reload (rtx first, int global)
else
continue;
/* If this register is being made equivalent to a MEM
and the MEM is not SET_SRC, the equivalencing insn
is one with the MEM as a SET_DEST and it occurs later.
So don't mark this insn now. */
if (!MEM_P (x)
|| rtx_equal_p (SET_SRC (set), x))
reg_equiv_init[i]
= gen_rtx_INSN_LIST (VOIDmode, insn, reg_equiv_init[i]);
reg_equiv_init[i]
= gen_rtx_INSN_LIST (VOIDmode, insn, reg_equiv_init[i]);
}
}
}
@ -806,9 +800,12 @@ reload (rtx first, int global)
&& reg_equiv_memory_loc[REGNO (SET_SRC (set))]
&& rtx_equal_p (SET_DEST (set),
reg_equiv_memory_loc[REGNO (SET_SRC (set))]))
/* Equivalences made this way only have one initializing insn.
Previously, we may have set reg_equiv_init when encountering a
SET of this pseudo; discard that insn since it does not set up
an equivalence. */
reg_equiv_init[REGNO (SET_SRC (set))]
= gen_rtx_INSN_LIST (VOIDmode, insn,
reg_equiv_init[REGNO (SET_SRC (set))]);
= gen_rtx_INSN_LIST (VOIDmode, insn, NULL_RTX);
if (INSN_P (insn))
scan_paradoxical_subregs (PATTERN (insn));