void
rs6000_finalize_pic ()
{
- if (DEFAULT_ABI == ABI_V4 || DEFAULT_ABI == ABI_SOLARIS)
+ /* Loop through all of the insns, replacing the special GOT_TOC_REGNUM
+ with an appropriate pseduo register. If we find we need GOT/TOC,
+ add the appropriate init code. */
+ if (flag_pic && (DEFAULT_ABI == ABI_V4 || DEFAULT_ABI == ABI_SOLARIS))
{
- /* Loop through all of the insns, replacing the special GOT_TOC_REGNUM
- with an appropriate pseduo register. If we find we need GOT/TOC,
- add the appropriate init code. */
- if (flag_pic)
- {
- rtx insn = get_insns ();
- rtx reg = NULL_RTX;
- rtx first_insn;
+ rtx insn = get_insns ();
+ rtx reg = NULL_RTX;
+ rtx first_insn;
- if (GET_CODE (insn) == NOTE)
- insn = next_nonnote_insn (insn);
+ if (GET_CODE (insn) == NOTE)
+ insn = next_nonnote_insn (insn);
- first_insn = insn;
- for ( ; insn != NULL_RTX; insn = NEXT_INSN (insn))
+ first_insn = insn;
+ for ( ; insn != NULL_RTX; insn = NEXT_INSN (insn))
+ {
+ if (GET_RTX_CLASS (GET_CODE (insn)) == 'i')
{
- if (GET_RTX_CLASS (GET_CODE (insn)) == 'i')
- {
- PATTERN (insn) = rs6000_replace_regno (PATTERN (insn),
+ PATTERN (insn) = rs6000_replace_regno (PATTERN (insn),
+ GOT_TOC_REGNUM,
+ ®);
+
+ if (REG_NOTES (insn))
+ REG_NOTES (insn) = rs6000_replace_regno (REG_NOTES (insn),
GOT_TOC_REGNUM,
®);
-
- if (REG_NOTES (insn))
- REG_NOTES (insn) = rs6000_replace_regno (REG_NOTES (insn),
- GOT_TOC_REGNUM,
- ®);
- }
}
+ }
- if (reg)
- {
- rtx init = gen_init_v4_pic (reg);
- emit_insn_before (init, first_insn);
- }
+ if (reg)
+ {
+ rtx init = gen_init_v4_pic (reg);
+ emit_insn_before (init, first_insn);
}
}
}
+\f
+/* Search for any occurrance of the GOT_TOC register marker that should
+ have been eliminated, but may have crept back in. */
+
+void
+rs6000_reorg (insn)
+ rtx insn;
+{
+ if (flag_pic && (DEFAULT_ABI == ABI_V4 || DEFAULT_ABI == ABI_SOLARIS))
+ {
+ rtx got_reg = gen_rtx (REG, Pmode, GOT_TOC_REGNUM);
+ for ( ; insn != NULL_RTX; insn = NEXT_INSN (insn))
+ if (GET_RTX_CLASS (GET_CODE (insn)) == 'i'
+ && reg_mentioned_p (got_reg, PATTERN (insn)))
+ fatal_insn ("GOT/TOC register marker not removed:", PATTERN (insn));
+ }
+}
+
\f
/* Define the structure for the machine field in struct function. */
struct machine_function
/* #define LEGITIMATE_PIC_OPERAND_P (X) */
+/* In rare cases, correct code generation requires extra machine
+ dependent processing between the second jump optimization pass and
+ delayed branch scheduling. On those machines, define this macro
+ as a C statement to act on the code starting at INSN.
+
+ On the RS/6000, we use it to make sure the GOT_TOC register marker
+ that FINALIZE_PIC is supposed to remove actually got removed. */
+
+#define MACHINE_DEPENDENT_REORG(INSN) rs6000_reorg (INSN)
+
\f
/* Define this if some processing needs to be done immediately before
emitting code for an insn. */
extern enum reg_class secondary_reload_class ();
extern int ccr_bit ();
extern void rs6000_finalize_pic ();
+extern void rs6000_reorg ();
extern void rs6000_save_machine_status ();
extern void rs6000_restore_machine_status ();
extern void rs6000_init_expanders ();