Rename fuse-caller-save

2014-12-03  Tom de Vries  <tom@codesourcery.com>

	PR rtl-optimization/63957
	* doc/invoke.texi: Replace -fuse-caller-save with -fipa-ra.
	* final.c (rest_of_handle_final): Replace flag_use_caller_save with
	flag_ipa_ra.
	(get_call_reg_set_usage): Same.
	* lra-assigns.c (lra_assign): Same.
	* lra-constraints.c (need_for_call_save_p): Same.
	* lra-lives.c (process_bb_lives): Same.
	* lra.c (lra): Same.
	* calls.c (expand_call): Same.
	(emit_library_call_value_1): Same.
	* config/arm/arm.c (arm_option_override): Same.
	* opts.c (default_options_table): Replace OPT_fuse_caller_save with
	OPT_fipa_ra.
	* target.def (call_fusage_contains_non_callee_clobbers): Replace
	fuse-caller-save with fipa-ra.
	* doc/tm.texi (TARGET_CALL_FUSAGE_CONTAINS_NON_CALLEE_CLOBBERS): Same.
	* common.opt: Same.

	* gcc.dg/ira-shrinkwrap-prep-1.c: Replace -fno-use-caller-save with
	-fno-ipa-ra.
	* gcc.dg/ira-shrinkwrap-prep-2.c: Same.
	* gcc.target/aarch64/aapcs64/aapcs64.exp: Same.
	* gcc.dg/fuse-caller-save.c: Replace -fuse-caller-save with -fipa-ra.
	* gcc.target/aarch64/fuse-caller-save.c: Same.
	* gcc.target/arm/fuse-caller-save.c: Same.
	* gcc.target/i386/fuse-caller-save-rec.c: Same.
	* gcc.target/i386/fuse-caller-save-xmm-run.c: Same.
	* gcc.target/i386/fuse-caller-save-xmm.c: Same.
	* gcc.target/i386/fuse-caller-save.c: Same.
	* gcc.target/mips/fuse-caller-save-micromips.c: Same.
	* gcc.target/mips/fuse-caller-save-mips16.c: Same.
	* gcc.target/mips/fuse-caller-save.c: Same.
	* gcc.target/mips/mips.exp: Replace use-caller-save with ipa-ra in
	-ffoo/-fno-foo options.

From-SVN: r218305

gcc/ChangeLog

@@ -1,3 +1,24 @@
+2014-12-03  Tom de Vries  <tom@codesourcery.com>
+
+	PR rtl-optimization/63957
+	* doc/invoke.texi: Replace -fuse-caller-save with -fipa-ra.
+	* final.c (rest_of_handle_final): Replace flag_use_caller_save with
+	flag_ipa_ra.
+	(get_call_reg_set_usage): Same.
+	* lra-assigns.c (lra_assign): Same.
+	* lra-constraints.c (need_for_call_save_p): Same.
+	* lra-lives.c (process_bb_lives): Same.
+	* lra.c (lra): Same.
+	* calls.c (expand_call): Same.
+	(emit_library_call_value_1): Same.
+	* config/arm/arm.c (arm_option_override): Same.
+	* opts.c (default_options_table): Replace OPT_fuse_caller_save with
+	OPT_fipa_ra.
+	* target.def (call_fusage_contains_non_callee_clobbers): Replace
+	fuse-caller-save with fipa-ra.
+	* doc/tm.texi (TARGET_CALL_FUSAGE_CONTAINS_NON_CALLEE_CLOBBERS): Same.
+	* common.opt: Same.
+
 2014-12-03  Yury Gribov  <y.gribov@samsung.com>
 
 	* sanopt.c (maybe_get_single_definition): New function.

gcc/calls.c

@@ -3330,7 +3330,7 @@ expand_call (tree exp, rtx target, int ignore)
 		   next_arg_reg, valreg, old_inhibit_defer_pop, call_fusage,
 		   flags, args_so_far);
 
-      if (flag_use_caller_save)
+      if (flag_ipa_ra)
 	{
 	  rtx_call_insn *last;
 	  rtx datum = NULL_RTX;
@@ -4370,7 +4370,7 @@ emit_library_call_value_1 (int retval, rtx orgfun, rtx value,
 	       valreg,
 	       old_inhibit_defer_pop + 1, call_fusage, flags, args_so_far);
 
-  if (flag_use_caller_save)
+  if (flag_ipa_ra)
     {
       rtx last, datum = orgfun;
       gcc_assert (GET_CODE (datum) == SYMBOL_REF);

gcc/common.opt

@@ -2826,8 +2826,8 @@ Create a position independent executable
 z
 Driver Joined Separate
 
-fuse-caller-save
+fipa-ra
-Common Report Var(flag_use_caller_save) Optimization
+Common Report Var(flag_ipa_ra) Optimization
 Use caller save register across calls if possible
 
 ; This comment is to ensure we retain the blank line above.

gcc/config/arm/arm.c

@@ -3109,13 +3109,12 @@ arm_option_override (void)
      - epilogue_insns - does not accurately model the corresponding insns
      emitted in the asm file.  In particular, see the comment in thumb_exit
      'Find out how many of the (return) argument registers we can corrupt'.
-     As a consequence, the epilogue may clobber registers without
+     As a consequence, the epilogue may clobber registers without fipa-ra
-     fuse-caller-save finding out about it.  Therefore, disable fuse-caller-save
+     finding out about it.  Therefore, disable fipa-ra in Thumb1 mode.
-     in Thumb1 mode.
      TODO: Accurately model clobbers for epilogue_insns and reenable
-     fuse-caller-save.  */
+     fipa-ra.  */
   if (TARGET_THUMB1)
-    flag_use_caller_save = 0;
+    flag_ipa_ra = 0;
 
   /* Register global variables with the garbage collector.  */
   arm_add_gc_roots ();

gcc/doc/invoke.texi

@@ -438,7 +438,7 @@ Objective-C and Objective-C++ Dialects}.
 -ftree-vectorize -ftree-vrp @gol
 -funit-at-a-time -funroll-all-loops -funroll-loops @gol
 -funsafe-loop-optimizations -funsafe-math-optimizations -funswitch-loops @gol
--fuse-caller-save -fvariable-expansion-in-unroller -fvect-cost-model -fvpt @gol
+-fipa-ra -fvariable-expansion-in-unroller -fvect-cost-model -fvpt @gol
 -fweb -fwhole-program -fwpa -fuse-ld=@var{linker} -fuse-linker-plugin @gol
 --param @var{name}=@var{value}
 -O  -O0  -O1  -O2  -O3  -Os -Ofast -Og}
@@ -7202,7 +7202,7 @@ also turns on the following optimization flags:
 -ftree-switch-conversion -ftree-tail-merge @gol
 -ftree-pre @gol
 -ftree-vrp @gol
--fuse-caller-save}
+-fipa-ra}
 
 Please note the warning under @option{-fgcse} about
 invoking @option{-O2} on programs that use computed gotos.
@@ -8034,7 +8034,7 @@ and then tries to find ways to combine them.
 
 Enabled by default at @option{-O1} and higher.
 
-@item -fuse-caller-save
+@item -fipa-ra
 Use caller save registers for allocation if those registers are not used by
 any called function.  In that case it is not necessary to save and restore
 them around calls.  This is only possible if called functions are part of

gcc/doc/tm.texi

@@ -4844,7 +4844,7 @@ linker (e.g. stubs, veneers, branch islands), but not including those
 modifiable by the callee.  The affected registers may be mentioned explicitly
 in the call pattern, or included as clobbers in CALL_INSN_FUNCTION_USAGE.
 The default version of this hook is set to false.  The purpose of this hook
-is to enable the fuse-caller-save optimization.
+is to enable the fipa-ra optimization.
 @end deftypevr
 
 @node Varargs

gcc/final.c

@@ -4473,7 +4473,7 @@ rest_of_handle_final (void)
   assemble_start_function (current_function_decl, fnname);
   final_start_function (get_insns (), asm_out_file, optimize);
   final (get_insns (), asm_out_file, optimize);
-  if (flag_use_caller_save)
+  if (flag_ipa_ra)
     collect_fn_hard_reg_usage ();
   final_end_function ();
 
@@ -4887,7 +4887,7 @@ bool
 get_call_reg_set_usage (rtx_insn *insn, HARD_REG_SET *reg_set,
 			HARD_REG_SET default_set)
 {
-  if (flag_use_caller_save)
+  if (flag_ipa_ra)
     {
       struct cgraph_rtl_info *node = get_call_cgraph_rtl_info (insn);
       if (node != NULL

gcc/lra-assigns.c

@@ -1527,7 +1527,7 @@ lra_assign (void)
   create_live_range_start_chains ();
   setup_live_pseudos_and_spill_after_risky_transforms (&all_spilled_pseudos);
 #ifdef ENABLE_CHECKING
-  if (!flag_use_caller_save)
+  if (!flag_ipa_ra)
     for (i = FIRST_PSEUDO_REGISTER; i < max_regno; i++)
       if (lra_reg_info[i].nrefs != 0 && reg_renumber[i] >= 0
 	  && lra_reg_info[i].call_p

gcc/lra-constraints.c

@@ -4644,7 +4644,7 @@ need_for_call_save_p (int regno)
   lra_assert (regno >= FIRST_PSEUDO_REGISTER && reg_renumber[regno] >= 0);
   return (usage_insns[regno].calls_num < calls_num
 	  && (overlaps_hard_reg_set_p
-	      ((flag_use_caller_save &&
+	      ((flag_ipa_ra &&
 		! hard_reg_set_empty_p (lra_reg_info[regno].actual_call_used_reg_set))
 	       ? lra_reg_info[regno].actual_call_used_reg_set
 	       : call_used_reg_set,

gcc/lra-lives.c

@@ -835,7 +835,7 @@ process_bb_lives (basic_block bb, int &curr_point, bool dead_insn_p)
 
       if (call_p)
 	{
-	  if (flag_use_caller_save)
+	  if (flag_ipa_ra)
 	    {
 	      HARD_REG_SET this_call_used_reg_set;
 	      get_call_reg_set_usage (curr_insn, &this_call_used_reg_set,

gcc/lra.c

@@ -2290,7 +2290,7 @@ lra (FILE *f)
 	  /* Do inheritance only for regular algorithms.  */
 	  if (! lra_simple_p)
 	    {
-	      if (flag_use_caller_save)
+	      if (flag_ipa_ra)
 		{
 		  if (live_p)
 		    lra_clear_live_ranges ();

gcc/opts.c

@@ -507,7 +507,7 @@ static const struct default_options default_options_table[] =
     { OPT_LEVELS_2_PLUS, OPT_fhoist_adjacent_loads, NULL, 1 },
     { OPT_LEVELS_2_PLUS, OPT_fipa_icf, NULL, 1 },
     { OPT_LEVELS_2_PLUS, OPT_fisolate_erroneous_paths_dereference, NULL, 1 },
-    { OPT_LEVELS_2_PLUS, OPT_fuse_caller_save, NULL, 1 },
+    { OPT_LEVELS_2_PLUS, OPT_fipa_ra, NULL, 1 },
     { OPT_LEVELS_2_PLUS, OPT_flra_remat, NULL, 1 },
 
     /* -O3 optimizations.  */

gcc/target.def

@@ -5553,7 +5553,7 @@ linker (e.g. stubs, veneers, branch islands), but not including those\n\
 modifiable by the callee.  The affected registers may be mentioned explicitly\n\
 in the call pattern, or included as clobbers in CALL_INSN_FUNCTION_USAGE.\n\
 The default version of this hook is set to false.  The purpose of this hook\n\
-is to enable the fuse-caller-save optimization.",
+is to enable the fipa-ra optimization.",
  bool, 
  false)
 

gcc/testsuite/ChangeLog

@@ -1,3 +1,23 @@
+2014-12-03  Tom de Vries  <tom@codesourcery.com>
+
+	PR rtl-optimization/63957
+	* gcc.dg/ira-shrinkwrap-prep-1.c: Replace -fno-use-caller-save with
+	-fno-ipa-ra.
+	* gcc.dg/ira-shrinkwrap-prep-2.c: Same.
+	* gcc.target/aarch64/aapcs64/aapcs64.exp: Same.
+	* gcc.dg/fuse-caller-save.c: Replace -fuse-caller-save with -fipa-ra.
+	* gcc.target/aarch64/fuse-caller-save.c: Same.
+	* gcc.target/arm/fuse-caller-save.c: Same.
+	* gcc.target/i386/fuse-caller-save-rec.c: Same.
+	* gcc.target/i386/fuse-caller-save-xmm-run.c: Same.
+	* gcc.target/i386/fuse-caller-save-xmm.c: Same.
+	* gcc.target/i386/fuse-caller-save.c: Same.
+	* gcc.target/mips/fuse-caller-save-micromips.c: Same.
+	* gcc.target/mips/fuse-caller-save-mips16.c: Same.
+	* gcc.target/mips/fuse-caller-save.c: Same.
+	* gcc.target/mips/mips.exp: Replace use-caller-save with ipa-ra in
+	-ffoo/-fno-foo options.
+
 2014-12-03  Ilya Enkovich  <ilya.enkovich@intel.com>
 
 	* gcc.target/i386/sse2-init-v2di-2.c: Adjust to changed

gcc/testsuite/gcc.dg/fuse-caller-save.c

@@ -1,6 +1,6 @@
 /* { dg-do run } */
-/* { dg-options "-fuse-caller-save" } */
+/* { dg-options "-fipa-ra" } */
-/* Testing -fuse-caller-save optimization option.  */
+/* Testing -fipa-ra optimization option.  */
 
 static int __attribute__((noinline))
 bar (int x)

gcc/testsuite/gcc.dg/ira-shrinkwrap-prep-1.c

@@ -1,5 +1,5 @@
 /* { dg-do compile { target { { { i?86-*-* x86_64-*-* } && lp64 } || { { powerpc*-*-* && lp64 } || { arm_nothumb || { aarch64*-*-* && lp64 } } } } } } */
-/* { dg-options "-O3 -fdump-rtl-ira -fdump-rtl-pro_and_epilogue -fno-use-caller-save"  } */
+/* { dg-options "-O3 -fdump-rtl-ira -fdump-rtl-pro_and_epilogue -fno-ipa-ra"  } */
 
 long __attribute__((noinline, noclone))
 foo (long a)

gcc/testsuite/gcc.dg/ira-shrinkwrap-prep-2.c

@@ -1,5 +1,5 @@
 /* { dg-do compile { target { { { i?86-*-* x86_64-*-* } && lp64 } || { { powerpc*-*-* && lp64 } || { arm_nothumb || { aarch64*-*-* && lp64 } } } } } } */
-/* { dg-options "-O3 -fdump-rtl-ira -fdump-rtl-pro_and_epilogue -fno-use-caller-save"  } */
+/* { dg-options "-O3 -fdump-rtl-ira -fdump-rtl-pro_and_epilogue -fno-ipa-ra"  } */
 
 long __attribute__((noinline, noclone))
 foo (long a)

gcc/testsuite/gcc.target/aarch64/aapcs64/aapcs64.exp

@@ -48,10 +48,10 @@ foreach src [lsort [glob -nocomplain $srcdir/$subdir/va_arg-*.c]] {
 }
 
 # Test function return value.
-#   Disable -fuse-caller-save to prevent the compiler from generating
+#   Disable -fipa-ra to prevent the compiler from generating
 #   conflicting code.
 set additional_flags_for_func_ret $additional_flags
-append additional_flags_for_func_ret " -fno-use-caller-save"
+append additional_flags_for_func_ret " -fno-ipa-ra"
 foreach src [lsort [glob -nocomplain $srcdir/$subdir/func-ret-*.c]] {
     if {[runtest_file_p $runtests $src]} {
 	    c-torture-execute [list $src \

gcc/testsuite/gcc.target/aarch64/fuse-caller-save.c

@@ -1,6 +1,6 @@
 /* { dg-do compile } */
-/* { dg-options "-O2 -fuse-caller-save" } */
+/* { dg-options "-O2 -fipa-ra" } */
-/* Testing -fuse-caller-save optimization option.  */
+/* Testing -fipa-ra optimization option.  */
 
 static int __attribute__((noinline))
 bar (int x)

gcc/testsuite/gcc.target/arm/fuse-caller-save.c

@@ -1,6 +1,6 @@
 /* { dg-do compile } */
-/* { dg-options "-O2 -fuse-caller-save" } */
+/* { dg-options "-O2 -fipa-ra" } */
-/* Testing -fuse-caller-save optimization option.  */
+/* Testing -fipa-ra optimization option.  */
 
 static int __attribute__((noinline))
 bar (int x)
@@ -21,5 +21,5 @@ main (void)
 }
 
 /* For thumb1, r3 is considered likely spilled, and treated differently in
-   ira_build_conflicts, which inhibits the fuse-caller-save optimization.  */
+   ira_build_conflicts, which inhibits the fipa-ra optimization.  */
 /* { dg-final { scan-assembler-times "mov\tr3, r0" 1 { target { ! arm_thumb1 } } } } */

gcc/testsuite/gcc.target/i386/fuse-caller-save-rec.c

@@ -1,8 +1,8 @@
 /* { dg-do compile } */
-/* { dg-options "-O2 -fuse-caller-save -fomit-frame-pointer -fno-optimize-sibling-calls" } */
+/* { dg-options "-O2 -fipa-ra -fomit-frame-pointer -fno-optimize-sibling-calls" } */
 /* { dg-additional-options "-mregparm=1" { target ia32 } } */
 
-/* Test -fuse-caller-save optimization on self-recursive function.  */
+/* Test -fipa-ra optimization on self-recursive function.  */
 
 static int __attribute__((noinline))
 bar (int x)

gcc/testsuite/gcc.target/i386/fuse-caller-save-xmm-run.c

@@ -1,5 +1,5 @@
 /* { dg-do run } */
-/* { dg-options "-O2 -msse -fuse-caller-save" } */
+/* { dg-options "-O2 -msse -fipa-ra" } */
 
 typedef double v2df __attribute__((vector_size (16)));
 

gcc/testsuite/gcc.target/i386/fuse-caller-save-xmm.c

@@ -1,5 +1,5 @@
 /* { dg-do compile } */
-/* { dg-options "-O2 -msse2 -mno-avx -fuse-caller-save -fomit-frame-pointer" } */
+/* { dg-options "-O2 -msse2 -mno-avx -fipa-ra -fomit-frame-pointer" } */
 
 typedef double v2df __attribute__((vector_size (16)));
 
@@ -16,7 +16,7 @@ foo (v2df y)
 }
 
 /* Check presence of all insns on xmm registers.  These checks are expected to
-   pass with both -fuse-caller-save and -fno-use-caller-save.  */
+   pass with both -fipa-ra and -fno-ipa-ra.  */
 /* { dg-final { scan-assembler-times "addpd\t\\.?LC0.*, %xmm0" 1 } } */
 /* { dg-final { scan-assembler-times "addpd\t%xmm1, %xmm0" 1 } } */
 /* { dg-final { scan-assembler-times "movapd\t%xmm0, %xmm1" 1 } } */

gcc/testsuite/gcc.target/i386/fuse-caller-save.c

@@ -1,8 +1,8 @@
 /* { dg-do compile } */
-/* { dg-options "-O2 -fuse-caller-save -fomit-frame-pointer" } */
+/* { dg-options "-O2 -fipa-ra -fomit-frame-pointer" } */
 /* { dg-additional-options "-mregparm=1" { target ia32 } } */
 
-/* Testing -fuse-caller-save optimization option.  */
+/* Testing -fipa-ra optimization option.  */
 
 static int __attribute__((noinline))
 bar (int x)

gcc/testsuite/gcc.target/mips/fuse-caller-save-micromips.c

@@ -1,9 +1,9 @@
 /* { dg-do compile } */
-/* { dg-options "-fuse-caller-save (-mmicromips) addressing=absolute" } */
+/* { dg-options "-fipa-ra (-mmicromips) addressing=absolute" } */
 /* At -O0 and -O1, the register allocator behaves more conservatively, and
-   the fuse-caller-save optimization doesnt' trigger.  */
+   the fipa-ra optimization doesnt' trigger.  */
 /* { dg-skip-if "" { *-*-* }  { "-O0" "-O1" } } */
-/* Testing -fuse-caller-save optimization option.  */
+/* Testing -fipa-ra optimization option.  */
 
 #define ATTRIBUTE MICROMIPS
 #include "fuse-caller-save.h"

gcc/testsuite/gcc.target/mips/fuse-caller-save-mips16.c

@@ -1,9 +1,9 @@
 /* { dg-do compile } */
-/* { dg-options "-fuse-caller-save (-mips16) addressing=absolute isa_rev=0" } */
+/* { dg-options "-fipa-ra (-mips16) addressing=absolute isa_rev=0" } */
 /* At -O0 and -O1, the register allocator behaves more conservatively, and
-   the fuse-caller-save optimization doesnt' trigger.  */
+   the fipa-ra optimization doesnt' trigger.  */
 /* { dg-skip-if "" { *-*-* }  { "-O0" "-O1" } } */
-/* Testing -fuse-caller-save optimization option.  */
+/* Testing -fipa-ra optimization option.  */
 
 #define ATTRIBUTE MIPS16
 #include "fuse-caller-save.h"

gcc/testsuite/gcc.target/mips/fuse-caller-save.c

@@ -1,9 +1,9 @@
 /* { dg-do compile } */
-/* { dg-options "-fuse-caller-save addressing=absolute" } */
+/* { dg-options "-fipa-ra addressing=absolute" } */
 /* At -O0 and -O1, the register allocator behaves more conservatively, and
-   the fuse-caller-save optimization doesnt' trigger.  */
+   the fipa-ra optimization doesnt' trigger.  */
 /* { dg-skip-if "" { *-*-* }  { "-O0" "-O1" } } */
-/* Testing -fuse-caller-save optimization option.  */
+/* Testing -fipa-ra optimization option.  */
 
 #define ATTRIBUTE NOCOMPRESSION
 #include "fuse-caller-save.h"

gcc/testsuite/gcc.target/mips/mips.exp

@@ -311,7 +311,7 @@ foreach option {
     tree-vectorize
     unroll-all-loops
     unroll-loops
-    use-caller-save
+    ipa-ra
 } {
     lappend mips_option_groups $option "-f(no-|)$option"
 }