https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64722
Ilya Enkovich <enkovich.gnu at gmail dot com> changed:
What |Removed |Added
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CC| |enkovich.gnu at gmail dot com
--- Comment #4 from Ilya Enkovich <enkovich.gnu at gmail dot com> ---
(In reply to Jakub Jelinek from comment #3)
> But then wonder if/how target_reinit works for i?86 32-bit.
> Perhaps pic_offset_table_rtx should be cleared in init_emit_regs before
> computing it?
> pic_offset_table_rtx = NULL_RTX;
> if ((unsigned) PIC_OFFSET_TABLE_REGNUM != INVALID_REGNUM)
> pic_offset_table_rtx = gen_raw_REG (Pmode, PIC_OFFSET_TABLE_REGNUM);
Clearing pic_offset_table_rtx here would mean PIC_OFFSET_TABLE_REGNUM tranfroms
into EBX and pic_offset_table_rtx is initialized with EBX which is not what we
want. Probably we just shouldn't try to initialize pic_offset_table_rtx with a
hard reg in case target assumes pseudo pic reg?
diff --git a/gcc/emit-rtl.c b/gcc/emit-rtl.c
index df85366..51ef3a5 100644
--- a/gcc/emit-rtl.c
+++ b/gcc/emit-rtl.c
@@ -5872,7 +5872,8 @@ init_emit_regs (void)
= gen_raw_REG (Pmode, RETURN_ADDRESS_POINTER_REGNUM);
#endif
- if ((unsigned) PIC_OFFSET_TABLE_REGNUM != INVALID_REGNUM)
+ if (!targetm.use_pseudo_pic_reg ()
+ && (unsigned) PIC_OFFSET_TABLE_REGNUM != INVALID_REGNUM)
pic_offset_table_rtx = gen_raw_REG (Pmode, PIC_OFFSET_TABLE_REGNUM);
else
pic_offset_table_rtx = NULL_RTX;
