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[27/27] Use *_target_globals for MIPS
- From: Richard Sandiford <rdsandiford at googlemail dot com>
- To: gcc-patches at gcc dot gnu dot org
- Date: Wed, 07 Jul 2010 22:48:19 +0100
- Subject: [27/27] Use *_target_globals for MIPS
- References: <87d3v2oqyt.fsf@firetop.home>
Here's the MIPS patch that actually makes use of all this stuff.
(Note that the default target is always non-MIPS16, even if
-mips16 is passed on the command line.)
Richard
gcc/
* config/mips/mips.h (mips16_globals): Declare.
(SWITCHABLE_TARGET): Define.
* config/mips/mips.c: Include target-globals.h.
(mips16_globals): New variable.
(mips_set_mips16_mode): Use save_target_globals and
restore_target_globals instead of target_reinit.
Index: gcc/config/mips/mips.h
===================================================================
--- gcc/config/mips/mips.h 2010-07-04 22:48:27.000000000 +0100
+++ gcc/config/mips/mips.h 2010-07-07 22:46:45.000000000 +0100
@@ -3025,6 +3025,7 @@ struct mips_asm_switch {
extern const struct mips_rtx_cost_data *mips_cost;
extern bool mips_base_mips16;
extern enum mips_code_readable_setting mips_code_readable;
+extern GTY(()) struct target_globals *mips16_globals;
#endif
/* Enable querying of DFA units. */
@@ -3059,3 +3060,6 @@ #define FINAL_PRESCAN_INSN(INSN, OPVEC,
support this feature. */
#define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
(((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_absptr)
+
+/* For switching between MIPS16 and non-MIPS16 modes. */
+#define SWITCHABLE_TARGET 1
Index: gcc/config/mips/mips.c
===================================================================
--- gcc/config/mips/mips.c 2010-07-04 22:48:27.000000000 +0100
+++ gcc/config/mips/mips.c 2010-07-07 22:46:45.000000000 +0100
@@ -58,6 +58,7 @@ the Free Software Foundation; either ver
#include "gimple.h"
#include "bitmap.h"
#include "diagnostic.h"
+#include "target-globals.h"
/* True if X is an UNSPEC wrapper around a SYMBOL_REF or LABEL_REF. */
#define UNSPEC_ADDRESS_P(X) \
@@ -568,6 +569,9 @@ static GTY (()) int mips_output_filename
/* Likewise for HIGHs. */
static const char *mips_hi_relocs[NUM_SYMBOL_TYPES];
+/* Target state for MIPS16. */
+struct target_globals *mips16_globals;
+
/* Index R is the smallest register class that contains register R. */
const enum reg_class mips_regno_to_class[FIRST_PSEUDO_REGISTER] = {
LEA_REGS, LEA_REGS, M16_REGS, V1_REG,
@@ -15200,9 +15204,15 @@ mips_set_mips16_mode (int mips16_p)
/* (Re)initialize MIPS target internals for new ISA. */
mips_init_relocs ();
- if (was_mips16_p >= 0 || was_mips16_pch_p >= 0)
- /* Reinitialize target-dependent state. */
- target_reinit ();
+ if (mips16_p)
+ {
+ if (!mips16_globals)
+ mips16_globals = save_target_globals ();
+ else
+ restore_target_globals (mips16_globals);
+ }
+ else
+ restore_target_globals (&default_target_globals);
was_mips16_p = mips16_p;
was_mips16_pch_p = mips16_p;