Add -mlzcnt.

Add -mlzcnt.

gcc/

2011-08-01  Kirill Yukhin  <kirill.yukhin@intel.com>

	PR target/49547
	* config.gcc (i[34567]86-*-*): Replace abmintrin.h with
	lzcntintrin.h.
	(x86_64-*-*): Likewise.
	* config/i386/i386.opt (mlzcnt): New.
	* config/i386/abmintrin.h: File removed.
	(__lzcnt_u16, __lzcnt, __lzcnt_u64): Moved to ...
	* config/i386/lzcntintrin.h: ... here. New file.
	(__lzcnt): Rename to ...
	(__lzcnt32): ... this.
	* config/i386/bmiintrin.h (head): Update copyright year.
	(__lzcnt_u16): Removed.
	(__lzcnt_u32): Likewise.
	(__lzcnt_u64): Likewise.
	* config/i386/x86intrin.h: Include lzcntintrin.h when __LZCNT__
	is defined, remove abmintrin.h.
	* config/i386/cpuid.h (bit_LZCNT): New.
	* config/i386/driver-i386.c (host_detect_local_cpu): Detect
	LZCNT feature.
	* config/i386/i386-c.c (ix86_target_macros_internal): Define
	__LZCNT__ if needed.
	* config/i386/i386.c (ix86_target_string): New option -mlzcnt.
	(ix86_option_override_internal): Handle LZCNT option.
	(ix86_valid_target_attribute_inner_p): Likewise.
	(struct builtin_description bdesc_args) <IX86_BUILTIN_CLZS>: Update.
	* config/i386/i386.h (TARGET_LZCNT): New.
	(CLZ_DEFINED_VALUE_AT_ZERO): Update.
	* config/i386/i386.md (clz<mode>2): Update insn constraint.
	(clz<mode>2_lzcnt): Likewise.
	* doc/invoke.texi: Mention -mlzcnt option.
	* doc/extend.texi: Likewise.

gcc/testsuite/

2011-08-01  Kirill Yukhin  <kirill.yukhin@intel.com>

	* gcc.target/i386/i386.exp (check_effective_target_lzcnt): New.
	* gcc.target/i386/lzcnt-1.c: New test.
	* gcc.target/i386/lzcnt-2.c: Likewise.
	* gcc.target/i386/lzcnt-2a.c: Likewise.
	* gcc.target/i386/lzcnt-3.c: Likewise.
	* gcc.target/i386/lzcnt-4.c: Likewise.
	* gcc.target/i386/lzcnt-4a.c: Likewise.
	* gcc.target/i386/lzcnt-5.c: Likewise.
	* gcc.target/i386/lzcnt-6.c: Likewise.
	* gcc.target/i386/lzcnt-6a.c: Likewise.
	* gcc.target/i386/lzcnt-check.h: Likewise.

	* gcc.target/i386/sse-12.c (dg-compile): Add -mlzcnt.
	* gcc.target/i386/sse-13.c: Likewise.
	* gcc.target/i386/sse-14.c: Likewise.
	* g++.dg/other/i386-2.C: Likewise.
	* g++.dg/other/i386-3.C: Likewise.

From-SVN: r177034