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(walk_fixup_memory_subreg): Add new arg UNCRITICAL.

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(fixup_var_refs_insn): Call with UNCRITICAL of 1 when processing
REG_NOTES.

From-SVN: r4360
This commit is contained in:
Richard Kenner 1993-05-06 12:58:33 -04:00
parent 36aa0bf595
commit ab6155b74f
1 changed files with 11 additions and 7 deletions
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18
gcc/function.c
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@ -1146,7 +1146,8 @@ fixup_var_refs_insns (var, promoted_mode, unsignedp, insn, toplevel)
we will get them elsewhere. */
for (note = REG_NOTES (insn); note; note = XEXP (note, 1))
if (GET_CODE (note) != INSN_LIST)
XEXP (note, 0) = walk_fixup_memory_subreg (XEXP (note, 0), insn);
XEXP (note, 0)
= walk_fixup_memory_subreg (XEXP (note, 0), insn, 1);
}
insn = next;
}
@ -1649,7 +1650,7 @@ fixup_var_refs_1 (var, promoted_mode, loc, insn, replacements)
If any insns must be emitted to compute NEWADDR, put them before INSN.
UNCRITICAL nonzero means accept paradoxical subregs.
This is used for subregs found inside of ZERO_EXTRACTs. */
This is used for subregs found inside of ZERO_EXTRACTs and in REG_NOTES. */
static rtx
fixup_memory_subreg (x, insn, uncritical)
@ -1687,12 +1688,15 @@ fixup_memory_subreg (x, insn, uncritical)
If X itself is a (SUBREG (MEM ...) ...), return the replacement expression.
Otherwise return X, with its contents possibly altered.
If any insns must be emitted to compute NEWADDR, put them before INSN. */
If any insns must be emitted to compute NEWADDR, put them before INSN.
UNCRITICAL is as in fixup_memory_subreg. */
static rtx
walk_fixup_memory_subreg (x, insn)
walk_fixup_memory_subreg (x, insn, uncritical)
register rtx x;
rtx insn;
int uncritical;
{
register enum rtx_code code;
register char *fmt;
@ -1704,7 +1708,7 @@ walk_fixup_memory_subreg (x, insn)
code = GET_CODE (x);
if (code == SUBREG && GET_CODE (SUBREG_REG (x)) == MEM)
return fixup_memory_subreg (x, insn, 0);
return fixup_memory_subreg (x, insn, uncritical);
/* Nothing special about this RTX; fix its operands. */
@ -1712,13 +1716,13 @@ walk_fixup_memory_subreg (x, insn)
for (i = GET_RTX_LENGTH (code) - 1; i >= 0; i--)
{
if (fmt[i] == 'e')
XEXP (x, i) = walk_fixup_memory_subreg (XEXP (x, i), insn);
XEXP (x, i) = walk_fixup_memory_subreg (XEXP (x, i), insn, uncritical);
if (fmt[i] == 'E')
{
register int j;
for (j = 0; j < XVECLEN (x, i); j++)
XVECEXP (x, i, j)
= walk_fixup_memory_subreg (XVECEXP (x, i, j), insn);
= walk_fixup_memory_subreg (XVECEXP (x, i, j), insn, uncritical);
}
}
return x;