Remove the frame size argument from function_prologue/epilogue

Later patches will add support for frame sizes that are a run-time
invariant but not a compile-time constant.  This then raised the
question of whether the frame size argument to the function_prologue/
epilogue hooks should be updated accordingly.

It turned out that only two targets actually used this argument, and
even they got other frame-related information from the cached machine
structure.  This patch therefore removes the argument and makes the two
targets use get_frame_size () instead.

2017-08-21  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

gcc/
	* target.def (function_prologue): Remove frame size argument.
	(function_epilogue): Likewise.
	* doc/tm.texi: Regenerate.
	* final.c (final_start_function): Update call to function_prologue.
	(final_end_function): Update call to function_epilogue.
	(default_function_pro_epilogue): Remove frame size argument.
	* output.h (default_function_pro_epilogue): Likewise.
	* config/arm/arm.c (arm_output_function_epilogue): Likewise.
	(arm_output_function_prologue): Likewise.
	* config/frv/frv.c (frv_function_prologue): Likewise.
	(frv_function_epilogue): Likewise.
	* config/i386/i386.c (ix86_output_function_epilogue): Likewise.
	* config/ia64/ia64.c (ia64_output_function_prologue): Likewise.
	(ia64_output_function_epilogue): Likewise.
	* config/m32r/m32r.c (m32r_output_function_prologue): Likewise.
	(m32r_output_function_epilogue): Likewise.
	* config/microblaze/microblaze.c (microblaze_function_prologue)
	(microblaze_function_epilogue): Likewise.
	* config/mips/mips.c (mips_output_function_prologue): Likewise.
	(mips_output_function_epilogue): Likewise.
	* config/mmix/mmix.c (mmix_target_asm_function_prologue): Likewise.
	(mmix_target_asm_function_epilogue): Likewise.
	* config/msp430/msp430.c (msp430_start_function): Likewise.
	* config/nds32/nds32.c (nds32_asm_function_prologue): Likewise.
	(nds32_asm_function_epilogue): Likewise.
	* config/nios2/nios2.c (nios2_asm_function_prologue): Likewise.
	* config/pa/pa.c (pa_output_function_prologue): Likewise.
	(pa_output_function_epilogue): Likewise.
	* config/powerpcspe/powerpcspe.c (rs6000_output_function_prologue)
	(rs6000_output_function_epilogue): Likewise.
	* config/rl78/rl78.c (rl78_start_function): Likewise.
	* config/rs6000/rs6000.c (rs6000_output_function_prologue): Likewise.
	(rs6000_output_function_epilogue): Likewise.
	* config/rx/rx.c (rx_output_function_prologue): Likewise.
	* config/sh/sh.c (sh_output_function_epilogue): Likewise.
	* config/sparc/sparc.c (sparc_asm_function_prologue): Likewise.
	(sparc_asm_function_epilogue): Likewise.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@251232 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 4 insertions, 13 deletions

diff --git a/gcc/config/pa/pa.c b/gcc/config/pa/pa.c
index 52f76cfd5f1..071cdb521ed 100644
--- a/gcc/config/pa/pa.c
+++ b/gcc/config/pa/pa.c
@@ -116,9 +116,9 @@ static void set_reg_plus_d (int, int, HOST_WIDE_INT, int);
 static rtx pa_function_value (const_tree, const_tree, bool);
 static rtx pa_libcall_value (machine_mode, const_rtx);
 static bool pa_function_value_regno_p (const unsigned int);
-static void pa_output_function_prologue (FILE *, HOST_WIDE_INT);
+static void pa_output_function_prologue (FILE *);
 static void update_total_code_bytes (unsigned int);
-static void pa_output_function_epilogue (FILE *, HOST_WIDE_INT);
+static void pa_output_function_epilogue (FILE *);
 static int pa_adjust_cost (rtx_insn *, int, rtx_insn *, int, unsigned int);
 static int pa_adjust_priority (rtx_insn *, int);
 static int pa_issue_rate (void);
@@ -3822,15 +3822,6 @@ pa_compute_frame_size (HOST_WIDE_INT size, int *fregs_live)
 	  & ~(PREFERRED_STACK_BOUNDARY / BITS_PER_UNIT - 1));
 }
 
-/* Generate the assembly code for function entry.  FILE is a stdio
-   stream to output the code to.  SIZE is an int: how many units of
-   temporary storage to allocate.
-
-   Refer to the array `regs_ever_live' to determine which registers to
-   save; `regs_ever_live[I]' is nonzero if register number I is ever
-   used in the function.  This function is responsible for knowing
-   which registers should not be saved even if used.  */
-
 /* On HP-PA, move-double insns between fpu and cpu need an 8-byte block
    of memory.  If any fpu reg is used in the function, we allocate
    such a block here, at the bottom of the frame, just in case it's needed.
@@ -3840,7 +3831,7 @@ pa_compute_frame_size (HOST_WIDE_INT size, int *fregs_live)
    to do this is made in regclass.c.  */
 
 static void
-pa_output_function_prologue (FILE *file, HOST_WIDE_INT size ATTRIBUTE_UNUSED)
+pa_output_function_prologue (FILE *file)
 {
   /* The function's label and associated .PROC must never be
      separated and must be output *after* any profiling declarations
@@ -4254,7 +4245,7 @@ update_total_code_bytes (unsigned int nbytes)
    adjustments before returning.  */
 
 static void
-pa_output_function_epilogue (FILE *file, HOST_WIDE_INT size ATTRIBUTE_UNUSED)
+pa_output_function_epilogue (FILE *file)
 {
   rtx_insn *insn = get_last_insn ();
   bool extra_nop;