* sibcall.c (skip_copy_to_return_value): Use OUTGOING_REGNO for

	comparison if regno's are equal.
	* calls.c (initialize_argument_informat): Add ecf_flags argument.
	Use FUNCTION_INCOMING_ARG if available and ECF_SIBCALL.
	(expand_call): Update caller.
	Avoid making a sibling call if argument size of the callee is larger
	than argument size of the caller.
	Call hard_function_value with outgoing set if in sibcall pass.
	Use FUNCTION_INCOMING_ARG if available and ECF_SIBCALL.

	* final.c (permitted_reg_in_leaf_functions, only_leaf_regs_used):
	Change LEAF_REGISTERS from an array initializer to actual array
	identifier. Move static global variable into the function.
	(leaf_function_p): Allow SIBLING_CALL_P calls even outside of
	sequences for leaf functions.
	* global.c (global_alloc): Likewise.
	* tm.texi (LEAF_REGISTERS): Update documentation.

	* config/sparc/sparc.h (CONDITIONAL_REGISTER_USAGE): Remove the ugly
	TARGET_FLAT leaf disabling hack.
	(LEAF_REGISTERS): Changed from an array initializer to actual array
	identifier to avoid duplication and remove the above hack.
	(FUNCTION_OK_FOR_SIBCALL): Define.
	* config/sparc/sparc.md (sibcall): New attr type. Use it almost
	always like call attribute.
	(eligible_for_sibcall_delay): New attribute.
	(sibcall): New delay type.
	(sibcall, sibcall_value, sibcall_epilogue): New expands.
	(sibcall_symbolic_sp32, sibcall_symbolic_sp64,
	sibcall_value_symbolic_sp32, sibcall_value_symbolic_sp64): New insns.
	* config/sparc/sparc.c (sparc_leaf_regs): New array.
	(eligible_for_sibcall_delay, output_restore_regs, output_sibcall):
	New functions.
	(output_function_epilogue): Move part of the code into
	output_restore_regs.
	(ultra_code_from_mask, ultrasparc_sched_reorder): Handle
	TYPE_SIBCALL.
	* sparc-protos.h (output_sibcall, eligible_for_sibcall_delay): New
	prototypes.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@32730 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 5 insertions, 2 deletions

diff --git a/gcc/sibcall.c b/gcc/sibcall.c
index bbb70243e72..1a3a310388d 100644
--- a/gcc/sibcall.c
+++ b/gcc/sibcall.c
@@ -140,9 +140,13 @@ skip_copy_to_return_value (orig_insn, hardret, softret)
      called function's return value was copied.  Otherwise we're returning
      some other value.  */
 
+#ifndef OUTGOING_REGNO
+#define OUTGOING_REGNO(N) (N)
+#endif
+
   if (SET_DEST (set) == current_function_return_rtx
       && REG_P (SET_DEST (set))
-      && REGNO (SET_DEST (set)) == REGNO (hardret)
+      && OUTGOING_REGNO (REGNO (SET_DEST (set))) == REGNO (hardret)
       && SET_SRC (set) == softret)
     return insn;
 
@@ -353,7 +357,6 @@ replace_call_placeholder (insn, use)
   NOTE_LINE_NUMBER (insn) = NOTE_INSN_DELETED;
 }
 
-
 /* Given a (possibly empty) set of potential sibling or tail recursion call
    sites, determine if optimization is possible.