mips.opt (mhard-float, [...]): Make these control TARGET_HARD_FLOAT_ABI and TARGET_SOFT_FLOAT_ABI...

2007-08-09  Sandra Loosemore  <sandra@codesourcery.com>

	gcc/
	* config/mips/mips.opt (mhard-float, msoft-float):  Make these
	control TARGET_HARD_FLOAT_ABI and TARGET_SOFT_FLOAT_ABI, rather
	than TARGET_HARD_FLOAT and TARGET_SOFT_FLOAT.  
	* config/mips/mips.h (mips16_hard_float): Delete.
	(TARGET_HARD_FLOAT_ABI, TARGET_SOFT_FLOAT_ABI):  Delete these
	definitions, and replace with....
	(TARGET_HARD_FLOAT, TARGET_SOFT_FLOAT): Define.
	* config/mips/mips.c (mips16_hard_float): Delete.  Replace
	all references with (TARGET_MIPS16 && TARGET_HARD_FLOAT_ABI).
	(MIPS_MARCH_CONTROLS_SOFT_FLOAT): Update comments.
	(override_options):  Replace MASK_SOFT_FLOAT references with
	MASK_SOFT_FLOAT_ABI.  Delete twiddling with MASK_SOFT_FLOAT
	and mips16_hard_float when TARGET_MIPS16.

From-SVN: r127325

4 files changed, 40 insertions, 33 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 25fb6ff..a62a76c 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,19 @@
+2007-08-09  Sandra Loosemore  <sandra@codesourcery.com>
+
+	* config/mips/mips.opt (mhard-float, msoft-float):  Make these
+	control TARGET_HARD_FLOAT_ABI and TARGET_SOFT_FLOAT_ABI, rather
+	than TARGET_HARD_FLOAT and TARGET_SOFT_FLOAT.  
+	* config/mips/mips.h (mips16_hard_float): Delete.
+	(TARGET_HARD_FLOAT_ABI, TARGET_SOFT_FLOAT_ABI):  Delete these
+	definitions, and replace with....
+	(TARGET_HARD_FLOAT, TARGET_SOFT_FLOAT): Define.
+	* config/mips/mips.c (mips16_hard_float): Delete.  Replace
+	all references with (TARGET_MIPS16 && TARGET_HARD_FLOAT_ABI).
+	(MIPS_MARCH_CONTROLS_SOFT_FLOAT): Update comments.
+	(override_options):  Replace MASK_SOFT_FLOAT references with
+	MASK_SOFT_FLOAT_ABI.  Delete twiddling with MASK_SOFT_FLOAT
+	and mips16_hard_float when TARGET_MIPS16.
+	
 2007-08-09  Andrew Pinski  <andrew_pinski@playstation.sony.com>
 
 	PR c/32796
diff --git a/gcc/config/mips/mips.c b/gcc/config/mips/mips.c
index 7f09ff9..ccd93fb 100644
--- a/gcc/config/mips/mips.c
+++ b/gcc/config/mips/mips.c
@@ -619,12 +619,6 @@ const struct mips_rtx_cost_data *mips_cost;
 /* The -mtext-loads setting.  */
 enum mips_code_readable_setting mips_code_readable = CODE_READABLE_YES;
 
-/* Whether we are generating mips16 hard float code.  In mips16 mode
-   we always set TARGET_SOFT_FLOAT; this variable is nonzero if
-   -msoft-float was not specified by the user, which means that we
-   should arrange to call mips32 hard floating point code.  */
-int mips16_hard_float;
-
 /* The architecture selected by -mipsN.  */
 static const struct mips_cpu_info *mips_isa_info;
 
@@ -1203,7 +1197,8 @@ static const unsigned char mips16e_save_restore_regs[] = {
   31, 30, 23, 22, 21, 20, 19, 18, 17, 16, 7, 6, 5, 4
 };
 
-/* Nonzero if -march should decide the default value of MASK_SOFT_FLOAT.  */
+/* Nonzero if -march should decide the default value of
+   MASK_SOFT_FLOAT_ABI.  */
 #ifndef MIPS_MARCH_CONTROLS_SOFT_FLOAT
 #define MIPS_MARCH_CONTROLS_SOFT_FLOAT 0
 #endif
@@ -3729,7 +3724,8 @@ mips_expand_call (rtx result, rtx addr, rtx args_size, rtx aux, int sibcall_p)
       mips_load_call_address (addr, orig_addr, sibcall_p);
     }
 
-  if (mips16_hard_float
+  if (TARGET_MIPS16
+      && TARGET_HARD_FLOAT_ABI
       && build_mips16_call_stub (result, addr, args_size,
 				 aux == 0 ? 0 : (int) GET_MODE (aux)))
     return;
@@ -5181,21 +5177,21 @@ override_options (void)
     }
 
   if (MIPS_MARCH_CONTROLS_SOFT_FLOAT
-      && (target_flags_explicit & MASK_SOFT_FLOAT) == 0)
+      && (target_flags_explicit & MASK_SOFT_FLOAT_ABI) == 0)
     {
       /* For some configurations, it is useful to have -march control
-	 the default setting of MASK_SOFT_FLOAT.  */
+	 the default setting of MASK_SOFT_FLOAT_ABI.  */
       switch ((int) mips_arch)
 	{
 	case PROCESSOR_R4100:
 	case PROCESSOR_R4111:
 	case PROCESSOR_R4120:
 	case PROCESSOR_R4130:
-	  target_flags |= MASK_SOFT_FLOAT;
+	  target_flags |= MASK_SOFT_FLOAT_ABI;
 	  break;
 
 	default:
-	  target_flags &= ~MASK_SOFT_FLOAT;
+	  target_flags &= ~MASK_SOFT_FLOAT_ABI;
 	  break;
 	}
     }
@@ -5278,16 +5274,8 @@ override_options (void)
   if (optimize > 2 && (target_flags_explicit & MASK_VR4130_ALIGN) == 0)
     target_flags |= MASK_VR4130_ALIGN;
 
-  /* When compiling for the mips16, we cannot use floating point.  We
-     record the original hard float value in mips16_hard_float.  */
   if (TARGET_MIPS16)
     {
-      if (TARGET_SOFT_FLOAT)
-	mips16_hard_float = 0;
-      else
-	mips16_hard_float = 1;
-      target_flags |= MASK_SOFT_FLOAT;
-
       /* Don't run the scheduler before reload, since it tends to
          increase register pressure.  */
       flag_schedule_insns = 0;
@@ -6717,7 +6705,8 @@ static bool
 mips16_cfun_returns_in_fpr_p (void)
 {
   tree return_type = DECL_RESULT (current_function_decl);
-  return (mips16_hard_float
+  return (TARGET_MIPS16
+	  && TARGET_HARD_FLOAT_ABI
 	  && !aggregate_value_p (return_type, current_function_decl)
  	  && mips_return_mode_in_fpr_p (DECL_MODE (return_type)));
 }
@@ -7205,7 +7194,8 @@ mips_output_function_prologue (FILE *file, HOST_WIDE_INT size ATTRIBUTE_UNUSED)
      floating point arguments.  The linker will arrange for any 32-bit
      functions to call this stub, which will then jump to the 16-bit
      function proper.  */
-  if (mips16_hard_float
+  if (TARGET_MIPS16
+      && TARGET_HARD_FLOAT_ABI
       && current_function_args_info.fp_code != 0)
     build_mips16_function_stub (file);
 
@@ -9141,7 +9131,7 @@ build_mips16_call_stub (rtx retval, rtx fn, rtx arg_size, int fp_code)
 
   /* We don't need to do anything if we aren't in mips16 mode, or if
      we were invoked with the -msoft-float option.  */
-  if (!mips16_hard_float)
+  if (!TARGET_MIPS16 || TARGET_SOFT_FLOAT_ABI)
     return 0;
 
   /* Figure out whether the value might come back in a floating point
@@ -10211,7 +10201,7 @@ mips_init_libfuncs (void)
       set_optab_libfunc (smod_optab, SImode, "__vr4120_modsi3");
     }
 
-  if (mips16_hard_float)
+  if (TARGET_MIPS16 && TARGET_HARD_FLOAT_ABI)
     {
       set_optab_libfunc (add_optab, SFmode, "__mips16_addsf3");
       set_optab_libfunc (sub_optab, SFmode, "__mips16_subsf3");
diff --git a/gcc/config/mips/mips.h b/gcc/config/mips/mips.h
index 9e90478..7c2f548 100644
--- a/gcc/config/mips/mips.h
+++ b/gcc/config/mips/mips.h
@@ -140,7 +140,6 @@ extern enum processor_type mips_arch;   /* which cpu to codegen for */
 extern enum processor_type mips_tune;   /* which cpu to schedule for */
 extern int mips_isa;			/* architectural level */
 extern int mips_abi;			/* which ABI to use */
-extern int mips16_hard_float;		/* mips16 without -msoft-float */
 extern const struct mips_cpu_info mips_cpu_info_table[];
 extern const struct mips_cpu_info *mips_arch_info;
 extern const struct mips_cpu_info *mips_tune_info;
@@ -316,11 +315,13 @@ extern enum mips_code_readable_setting mips_code_readable;
 #define TARGET_OLDABI		    (mips_abi == ABI_32 || mips_abi == ABI_O64)
 #define TARGET_NEWABI		    (mips_abi == ABI_N32 || mips_abi == ABI_64)
 
-/* Similar to TARGET_HARD_FLOAT and TARGET_SOFT_FLOAT, but reflect the ABI
-   in use rather than whether the FPU is directly accessible.  */
-#define TARGET_HARD_FLOAT_ABI (TARGET_HARD_FLOAT || mips16_hard_float)
-#define TARGET_SOFT_FLOAT_ABI (!TARGET_HARD_FLOAT_ABI)
-
+/* TARGET_HARD_FLOAT and TARGET_SOFT_FLOAT reflect whether the FPU is
+   directly accessible, while the command-line options select
+   TARGET_HARD_FLOAT_ABI and TARGET_SOFT_FLOAT_ABI to reflect the ABI
+   in use.  */
+#define TARGET_HARD_FLOAT (TARGET_HARD_FLOAT_ABI && !TARGET_MIPS16)
+#define TARGET_SOFT_FLOAT (TARGET_SOFT_FLOAT_ABI || TARGET_MIPS16)
+  
 /* IRIX specific stuff.  */
 #define TARGET_IRIX	   0
 #define TARGET_IRIX6	   0
diff --git a/gcc/config/mips/mips.opt b/gcc/config/mips/mips.opt
index afb3301..4a752ec 100644
--- a/gcc/config/mips/mips.opt
+++ b/gcc/config/mips/mips.opt
@@ -145,8 +145,8 @@ Target Report RejectNegative Mask(64BIT)
 Use 64-bit general registers
 
 mhard-float
-Target Report RejectNegative InverseMask(SOFT_FLOAT, HARD_FLOAT)
-Allow the use of hardware floating-point instructions
+Target Report RejectNegative InverseMask(SOFT_FLOAT_ABI, HARD_FLOAT_ABI)
+Allow the use of hardware floating-point ABI and instructions
 
 mips
 Target RejectNegative Joined
@@ -217,7 +217,7 @@ Target Report RejectNegative Mask(SMARTMIPS)
 Use SmartMIPS instructions
 
 msoft-float
-Target Report RejectNegative Mask(SOFT_FLOAT)
+Target Report RejectNegative Mask(SOFT_FLOAT_ABI)
 Prevent the use of all hardware floating-point instructions
 
 msplit-addresses