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PR middle_end/34150

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* pa.c (legitimize_pic_address): Add REG_EQUAL note on sets with a
	pic_label_operand source.  Similarly, add a REG_LABEL note and
	update LABEL_NUSES during and after reload.

From-SVN: r132204
This commit is contained in:
John David Anglin
2008-02-09 20:42:17 +00:00
committed by John David Anglin
parent 675bb06dd3
commit a6f0ee0821
2 changed files with 27 additions and 1 deletions
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7
gcc/ChangeLog
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@@ -1,3 +1,10 @@
2008-02-09 John David Anglin <dave.anglin@nrc-cnrc.gc.ca>
PR middle_end/34150
* pa.c (legitimize_pic_address): Add REG_EQUAL note on sets with a
pic_label_operand source. Similarly, add a REG_LABEL note and
update LABEL_NUSES during and after reload.
2008-02-08 Steven Bosscher <stevenb.gcc@gmail.com>
PR middle-end/34627

21
gcc/config/pa/pa.c
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@@ -626,6 +626,8 @@ legitimize_pic_address (rtx orig, enum machine_mode mode, rtx reg)
/* Labels need special handling. */
if (pic_label_operand (orig, mode))
{
rtx insn;
/* We do not want to go through the movXX expanders here since that
would create recursion.
@@ -636,7 +638,24 @@ legitimize_pic_address (rtx orig, enum machine_mode mode, rtx reg)
So instead we just emit the raw set, which avoids the movXX
expanders completely. */
mark_reg_pointer (reg, BITS_PER_UNIT);
emit_insn (gen_rtx_SET (VOIDmode, reg, orig));
insn = emit_insn (gen_rtx_SET (VOIDmode, reg, orig));
/* Put a REG_EQUAL note on this insn, so that it can be optimized. */
REG_NOTES (insn) = gen_rtx_EXPR_LIST (REG_EQUAL, orig, REG_NOTES (insn));
/* During and after reload, we need to generate a REG_LABEL note and
update LABEL_NUSES because this is not done automatically. */
if (reload_in_progress || reload_completed)
{
/* Extract LABEL_REF. */
if (GET_CODE (orig) == CONST)
orig = XEXP (XEXP (orig, 0), 0);
/* Extract CODE_LABEL. */
orig = XEXP (orig, 0);
REG_NOTES (insn) = gen_rtx_INSN_LIST (REG_LABEL, orig,
REG_NOTES (insn));
LABEL_NUSES (orig)++;
}
current_function_uses_pic_offset_table = 1;
return reg;
}