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emit-rtl.c (gen_rtx_REG): Check that the PIC_OFFSET_TABLE_REGNUM is a fixed register before returning...

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* emit-rtl.c (gen_rtx_REG): Check that the PIC_OFFSET_TABLE_REGNUM
	is a fixed register before returning pic_offset_table_rtx.
	* loop.c (scan_loop): Don't hoist insns that set pic_offset_table_rtx
	when PIC_OFFSET_TABLE_REG_CALL_CLOBBERED is defined.

From-SVN: r49304
This commit is contained in:
John David Anglin 2002-01-29 00:45:55 +00:00 committed by John David Anglin
parent 5a852b3eb0
commit 2d67bd7be1
3 changed files with 12 additions and 1 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2002-01-28 John David Anglin <dave@hiauly1.hia.nrc.ca>
* emit-rtl.c (gen_rtx_REG): Check that the PIC_OFFSET_TABLE_REGNUM
is a fixed register before returning pic_offset_table_rtx.
* loop.c (scan_loop): Don't hoist insns that set pic_offset_table_rtx
when PIC_OFFSET_TABLE_REG_CALL_CLOBBERED is defined.
2002-01-28 Jason Merrill <jason@redhat.com>
* dwarf2.h (enum dwarf_call_frame_info): Add other DWARF 3 codes.

3
gcc/emit-rtl.c
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@ -411,7 +411,8 @@ gen_rtx_REG (mode, regno)
if (regno == RETURN_ADDRESS_POINTER_REGNUM)
return return_address_pointer_rtx;
#endif
if (regno == PIC_OFFSET_TABLE_REGNUM)
if (regno == PIC_OFFSET_TABLE_REGNUM
&& fixed_regs[PIC_OFFSET_TABLE_REGNUM])
return pic_offset_table_rtx;
if (regno == STACK_POINTER_REGNUM)
return stack_pointer_rtx;

3
gcc/loop.c
View File

@ -762,6 +762,9 @@ scan_loop (loop, flags)
if (GET_CODE (p) == INSN
&& (set = single_set (p))
&& GET_CODE (SET_DEST (set)) == REG
#ifdef PIC_OFFSET_TABLE_REG_CALL_CLOBBERED
&& SET_DEST (set) != pic_offset_table_rtx
#endif
&& ! regs->array[REGNO (SET_DEST (set))].may_not_optimize)
{
int tem1 = 0;