2004-04-29 Andreas Krebbel <krebbel1@de.ibm.com>

2004-04-29  Andreas Krebbel  <krebbel1@de.ibm.com>

ChangeLog:

	* config/s390/s390-protos.h (s390_emit_epilogue): Parameter added.
	(s390_emit_call): New function prototype added.
	(s390_tls_get_offset): Function removed.
	* config/s390/s390.c (s390_function_ok_for_sibcall,
	s390_call_saved_register_used_p): New functions.
	(TARGET_FUNCTION_OK_FOR_SIBCALL): Definition of target macro added.
	(s390_tls_get_offset): Function merged into s390_emit_tls_call_insn.
	(s390_emit_tls_call_insn): New function.
	(legitimize_tls_address): Call s390_emit_tls_call_insn instead of
	emit_call_insn.
	(s390_emit_prologue): Use s390_emit_call instead of emit_call_insn.
	(s390_emit_epilogue): Like s390_emit_prologue. Parameter for sibcalls
	added.
	* config/s390/s390.h (SIBCALL_REGNUM): New macro representing the
	register number used to hold the target address for sibcalls.
	* config/s390/s390.md ("sibcall", "sibcall_value", "sibcall_epilogue"):
	New expanders.
	("*sibcall_br", "*sibcall_brc", "*sibcall_brcl", "*sibcall_value_br",
	"*sibcall_value_brc", "*sibcall_value_brcl"): New insns.
	("call_exp", "call_value_exp", "call_value_tls", "call_value_tls_exp"):
	Expanders removed.
	("call", "call_value"): Call s390_emit_call to emit the call patterns.
	("*bras", "*brasl", "*bras_r", "*brasl_r", "*bras_tls", "*brasl_tls",
	"*basr", "*basr_r", "*basr_tls"): Added constraint: !SIBLING_CALL_P.
	("epilogue"): Changed the call to s390_emit_epilogue to use the
	new parameter.

testsuite/ChangeLog:

	* gcc.dg/sibcall-3.c: Delete s390 from expected fail list.
	* gcc.dg/sibcall-4.c: Likewise.
	* gcc.dg/sibcall-6.c: Enable s390 as test platform.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@81347 138bc75d-0d04-0410-961f-82ee72b054a4