i386.c (get_thread_pointer): Add tp_mode argument.

i386.c (get_thread_pointer): Add tp_mode argument.

	* config/i386/i386.c (get_thread_pointer): Add tp_mode argument.
	Generate ZERO_EXTEND in place if GET_MODE (tp) != tp_mode.
	(legitimize_tls_address) <TLS_MODEL_INITIAL_EXEC>: Always generate
	DImode UNSPEC_GOTNTPOFF references on TARGET_64BIT.
	(ix86_decompose_address): Allow zero extended UNSPEC_TP references.

	Revert:
	2012-03-13  Uros Bizjak  <ubizjak@gmail.com>

	* config/i386/i386.h (TARGET_TLS_INDIRECT_SEG_REFS): New.
	* config/i386/i386.c (ix86_decompose_address): Use
	TARGET_TLS_INDIRECT_SEG_REFS to prevent %fs:(%reg) addresses.
	(legitimize_tls_address): Use TARGET_TLS_INDIRECT_SEG_REFS to load
	thread pointer to a register.

	Revert:
	2012-03-10  H.J. Lu  <hongjiu.lu@intel.com>

	* config/i386/i386.c (ix86_decompose_address): Disallow fs:(reg)
	if Pmode != word_mode.
	(legitimize_tls_address): Call gen_tls_initial_exec_x32 if
	Pmode == SImode for TARGET_X32.

	* config/i386/i386.md (UNSPEC_TLS_IE_X32): New.
	(tls_initial_exec_x32): Likewise.

From-SVN: r185536