gcc/

	* hard-reg-set.h (target_hard_regs): Add x_accessible_reg_set
	and x_operand_reg_set.
	(accessible_reg_set, operand_reg_set): New macros.
	* reginfo.c (init_reg_sets): Initialize accessible_reg_set and
	operand_reg_set.
	(saved_accessible_reg_set, saved_operand_reg_set): New variables.
	(save_register_info): Save them.
	(restore_register_info): Restore them.
	(init_reg_sets_1): Limit operand_reg_set to accessible_reg_set.
	Remove NO_REGS registers from operand_reg_set.  Treat members
	of operand_reg_set as fixed.
	* recog.c (general_operand): Check operand_reg_set rather than
	NO_REGS.
	(register_operand, nonmemory_operand): Likewise.
	* varasm.c (make_decl_rtl): Always use DECL_MODE as the mode of
	register variables.  Check accessible_reg_set and operand_reg_set.
	* config/mips/mips.c (mips_conditional_register_usage): Remove
	inaccessible register from accessible_reg_set, rather than just
	making them fixed.

gcc/testsuite/
	* gcc.target/mips/mips.exp (mips-dg-options): Make -mno-dsp
	imply -mno-dspr2.
	* gcc.target/mips/no-dsp-1.c: New test.
	* gcc.target/mips/soft-float-1.c: Likewise.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@181760 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 11 insertions, 0 deletions

diff --git a/gcc/hard-reg-set.h b/gcc/hard-reg-set.h
index 9cd7c8bb962..9823a5b3441 100644
--- a/gcc/hard-reg-set.h
+++ b/gcc/hard-reg-set.h
@@ -583,6 +583,13 @@ hard_reg_set_iter_next (hard_reg_set_iterator *iter, unsigned *regno)
 extern char global_regs[FIRST_PSEUDO_REGISTER];
 
 struct target_hard_regs {
+  /* The set of registers that actually exist on the current target.  */
+  HARD_REG_SET x_accessible_reg_set;
+
+  /* The set of registers that should be considered to be register
+     operands.  It is a subset of x_accessible_reg_set.  */
+  HARD_REG_SET x_operand_reg_set;
+
   /* Indexed by hard register number, contains 1 for registers
      that are fixed use (stack pointer, pc, frame pointer, etc.;.
      These are the registers that cannot be used to allocate
@@ -659,6 +666,10 @@ extern struct target_hard_regs *this_target_hard_regs;
 #define this_target_hard_regs (&default_target_hard_regs)
 #endif
 
+#define accessible_reg_set \
+  (this_target_hard_regs->x_accessible_reg_set)
+#define operand_reg_set \
+  (this_target_hard_regs->x_operand_reg_set)
 #define fixed_regs \
   (this_target_hard_regs->x_fixed_regs)
 #define fixed_reg_set \