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sh.c (sh_expand_prologue): Mark GOTaddr2picreg as MAYBE_DEAD. 

* config/sh/sh.c (sh_expand_prologue): Mark GOTaddr2picreg as
MAYBE_DEAD.
(sh_expand_epilogue): Take the PIC register into account when
computing the frame size.

From-SVN: r36496
This commit is contained in:
Alexandre Oliva 2000-09-18 16:45:48 +00:00 committed by Alexandre Oliva
parent 55eec6605c
commit 40fc375d0a
2 changed files with 24 additions and 3 deletions
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5
gcc/ChangeLog
View File

@ -1,5 +1,10 @@
2000-09-18 Alexandre Oliva <aoliva@redhat.com>
* config/sh/sh.c (sh_expand_prologue): Mark GOTaddr2picreg as
MAYBE_DEAD.
(sh_expand_epilogue): Take the PIC register into account when
computing the frame size.
* config/sh/sh.c (nonpic_symbol_mentioned_p): Check LABEL_REFs.
* config/sh/sh.md (sym_label2reg, symPLT_label2reg): Protect
LABEL_REFs with a PIC-safe unspec.

22
gcc/config/sh/sh.c
View File

@ -3950,7 +3950,17 @@ sh_expand_prologue ()
if (flag_pic && (current_function_uses_pic_offset_table
|| regs_ever_live[PIC_OFFSET_TABLE_REGNUM]))
emit_insn (gen_GOTaddr2picreg ());
{
rtx insn = get_last_insn ();
rtx insn_end = emit_insn (gen_GOTaddr2picreg ());
while (insn != insn_end)
{
insn = NEXT_INSN (insn);
REG_NOTES (insn) = gen_rtx_EXPR_LIST (REG_MAYBE_DEAD,
const0_rtx,
REG_NOTES (insn));
}
}
if (target_flags != save_flags)
emit_insn (gen_toggle_sz ());
@ -3976,6 +3986,14 @@ sh_expand_epilogue ()
live_regs_mask = calc_live_regs (&d, &live_regs_mask2);
if (flag_pic && current_function_uses_pic_offset_table)
{
if ((live_regs_mask & (1 << PIC_OFFSET_TABLE_REGNUM)) != 0)
abort ();
live_regs_mask |= (1 << PIC_OFFSET_TABLE_REGNUM);
d += UNITS_PER_WORD;
}
frame_size = rounded_frame_size (d);
if (frame_pointer_needed)
@ -4003,8 +4021,6 @@ sh_expand_epilogue ()
if (target_flags != save_flags)
emit_insn (gen_toggle_sz ());
if (flag_pic && current_function_uses_pic_offset_table)
live_regs_mask |= (1 << PIC_OFFSET_TABLE_REGNUM);
if (live_regs_mask & (1 << PR_REG))
pop (PR_REG);
for (i = 0; i < FIRST_PSEUDO_REGISTER; i++)