gcc:
	* doc/sourcebuild.texi (Effective-Target Keywords): Document
	3dnow, sse3, sse2.
	(Directives): Document optional	dg-require-effective-target
	selector.

	gcc/testsuite:
	* lib/target-supports.exp (check_effective_target_sse2): New proc.
	* lib/target-supports-dg.exp (dg-require-effective-target): Allow
	for optional selector.
	* gcc.target/i386/i386.exp (check_effective_target_3dnow): New proc.
	(check_effective_target_sse3): New proc.
	* gcc.target/i386/math-torture/math-torture.exp: Load
	target-supports.exp.
	Only add options with -msse2 to MATH_TORTURE_OPTIONS if
	check_effective_target_sse2.
	* gcc.dg/vect/vect.exp: Return unless check_effective_target_sse2.
	* gcc.dg/vect/costmodel/i386/i386-costmodel-vect.exp: Likewise.
	* g++.dg/vect/vect.exp: Likewise.
	* gfortran.dg/vect/vect.exp: Likewise.
	* lib/fortran-torture.exp (get-fortran-torture-options): Only use
	-msse2 if check_effective_target_sse2.

	* gcc.target/i386/3dnow-1.c: Use dg-require-effective-target 3dnow.
	* gcc.target/i386/3dnow-2.c: Likewise.
	* gcc.target/i386/3dnowA-1.c: Likewise.
	* gcc.target/i386/3dnowA-2.c: Likewise.
	* gcc.target/i386/pr42549.c: Likewise.

	* gcc.target/i386/sse3-addsubpd.c: Use dg-require-effective-target sse3.
	* gcc.target/i386/sse3-addsubps.c: Likewise.
	* gcc.target/i386/sse3-haddpd.c: Likewise.
	* gcc.target/i386/sse3-haddps.c: Likewise.
	* gcc.target/i386/sse3-hsubpd.c: Likewise.
	* gcc.target/i386/sse3-hsubps.c: Likewise.
	* gcc.target/i386/sse3-lddqu.c: Likewise.
	* gcc.target/i386/sse3-movddup.c: Likewise.
	* gcc.target/i386/sse3-movshdup.c: Likewise.
	* gcc.target/i386/sse3-movsldup.c: Likewise.

	* g++.dg/abi/mangle42.C: Use dg-require-effective-target sse2.
	* g++.dg/ext/attrib35.C: Likewise.
	* g++.dg/opt/pr40496.C: Likewise.
	* g++.dg/other/i386-1.C: Likewise.
	* g++.dg/other/i386-4.C: Likewise.
	* g++.dg/other/pr34435.C: Likewise.
	* g++.dg/other/pr39496.C: Likewise.
	* g++.dg/other/pr40446.C: Likewise.
	* gcc.dg/compat/union-m128-1_main.c: Likewise.
	* gcc.dg/compat/vector-1a_main.c: Likewise.
	* gcc.dg/compat/vector-2a_main.c: Likewise.
	* gcc.dg/lto/20090206-1_0.c: Likewise.
	* gcc.dg/pr34856.c: Likewise.
	* gcc.dg/pr36584.c: Likewise.
	* gcc.dg/pr36997.c: Likewise.  Adapt dg-message line number.
	* gcc.dg/pr37544.c: Likewise.
	* gcc.dg/torture/pr16104-1.c: Likewise.
	* gcc.dg/torture/pr35771-1.c: Likewise.
	* gcc.dg/torture/pr35771-2.c: Likewise.
	* gcc.dg/torture/pr35771-3.c: Likewise.
	* gcc.dg/torture/stackalign/alloca-2.c: Likewise.
	* gcc.dg/torture/stackalign/alloca-3.c: Likewise.
	* gcc.dg/torture/stackalign/push-1.c: Likewise.
	* gcc.dg/torture/stackalign/vararg-3.c: Likewise.
	* gcc.dg/tree-ssa/prefetch-6.c: Likewise.
	* gcc.dg/tree-ssa/prefetch-7.c: Likewise.
	* gcc.dg/vect/vect-debug-pr41926.c: Likewise.
	* gcc.target/i386/20060512-1.c: Likewise.
	* gcc.target/i386/20060512-3.c: Likewise.
	* gcc.target/i386/all_one_m128i.c: Likewise.
	* gcc.target/i386/float128-1.c: Likewise.
	* gcc.target/i386/float128-2.c: Likewise.
	* gcc.target/i386/fpcvt-1.c: Likewise.
	* gcc.target/i386/fpcvt-2.c: Likewise.
	* gcc.target/i386/fpcvt-3.c: Likewise.
	* gcc.target/i386/fpprec-1.c: Likewise.
	* gcc.target/i386/funcspec-9.c: Likewise.
	* gcc.target/i386/incoming-1.c: Likewise.
	* gcc.target/i386/incoming-12.c: Likewise.
	* gcc.target/i386/incoming-2.c: Likewise.
	* gcc.target/i386/incoming-3.c: Likewise.
	* gcc.target/i386/incoming-4.c: Likewise.
	* gcc.target/i386/incoming-6.c: Likewise.
	* gcc.target/i386/incoming-7.c: Likewise.
	* gcc.target/i386/incoming-8.c: Likewise.
	* gcc.target/i386/opt-1.c: Likewise.
	* gcc.target/i386/opt-2.c: Likewise.
	* gcc.target/i386/ordcmp-1.c: Likewise.
	* gcc.target/i386/pr17692.c: Likewise.
	* gcc.target/i386/pr18614-1.c: Likewise.
	* gcc.target/i386/pr22152.c: Likewise.
	* gcc.target/i386/pr23570.c: Likewise.
	* gcc.target/i386/pr23575.c: Likewise.
	* gcc.target/i386/pr26449-1.c: Likewise.
	* gcc.target/i386/pr26600.c: Likewise.
	* gcc.target/i386/pr27790.c: Likewise.
	* gcc.target/i386/pr28839.c: Likewise.
	* gcc.target/i386/pr30970.c: Likewise.
	* gcc.target/i386/pr32000-1.c: Likewise.
	* gcc.target/i386/pr32000-2.c: Likewise.
	* gcc.target/i386/pr32280.c: Likewise.
	* gcc.target/i386/pr32661.c: Likewise.
	* gcc.target/i386/pr32708-1.c: Likewise.
	* gcc.target/i386/pr32961.c: Likewise.
	* gcc.target/i386/pr33329.c: Likewise.
	* gcc.target/i386/pr35714.c: Likewise.
	* gcc.target/i386/pr35767-1.c: Likewise.
	* gcc.target/i386/pr35767-1d.c: Likewise.
	* gcc.target/i386/pr35767-1i.c: Likewise.
	* gcc.target/i386/pr35767-2.c: Likewise.
	* gcc.target/i386/pr35767-2d.c: Likewise.
	* gcc.target/i386/pr35767-2i.c: Likewise.
	* gcc.target/i386/pr35767-3.c: Likewise.
	* gcc.target/i386/pr35767-5.c: Likewise.
	* gcc.target/i386/pr36222-1.c: Likewise.
	* gcc.target/i386/pr36578-1.c: Likewise.
	* gcc.target/i386/pr36578-2.c: Likewise.
	* gcc.target/i386/pr36992-1.c: Likewise.
	* gcc.target/i386/pr37101.c: Likewise.
	* gcc.target/i386/pr37216.c: Likewise.
	* gcc.target/i386/pr37434-1.c: Likewise.
	* gcc.target/i386/pr37434-2.c: Likewise.
	* gcc.target/i386/pr37843-3.c: Likewise.
	* gcc.target/i386/pr37843-4.c: Likewise.
	* gcc.target/i386/pr39162.c: Likewise.
	* gcc.target/i386/pr39315-1.c: Likewise.
	* gcc.target/i386/pr39315-2.c: Likewise.
	* gcc.target/i386/pr39315-3.c: Likewise.
	* gcc.target/i386/pr39315-4.c: Likewise.
	* gcc.target/i386/pr39445.c: Likewise.
	* gcc.target/i386/pr39496.c: Likewise.
	* gcc.target/i386/pr40809.c: Likewise.
	* gcc.target/i386/pr40906-3.c: Likewise.
	* gcc.target/i386/pr41019.c: Likewise.
	* gcc.target/i386/pr42542-1.c: Likewise.
	* gcc.target/i386/pr42542-2.c: Likewise.
	* gcc.target/i386/pr42542-3.c: Likewise.
	* gcc.target/i386/pr42542-3a.c: Likewise.
	* gcc.target/i386/pr42881.c: Likewise.
	* gcc.target/i386/push-1.c: Likewise.
	* gcc.target/i386/quad-sse.c: Likewise.
	* gcc.target/i386/reload-1.c: Likewise.
	* gcc.target/i386/sse-10.c: Likewise.
	* gcc.target/i386/sse-11.c: Likewise.
	* gcc.target/i386/sse-15.c: Likewise.
	* gcc.target/i386/sse-17.c: Likewise.
	* gcc.target/i386/sse-18.c: Likewise.
	* gcc.target/i386/sse-19.c: Likewise.
	* gcc.target/i386/sse-4.c: Likewise.
	* gcc.target/i386/sse-6.c: Likewise.
	* gcc.target/i386/sse-vect-types.c: Likewise.
	* gcc.target/i386/sse2-addpd-1.c: Likewise.
	* gcc.target/i386/sse2-addsd-1.c: Likewise.
	* gcc.target/i386/sse2-andnpd-1.c: Likewise.
	* gcc.target/i386/sse2-andpd-1.c: Likewise.
	* gcc.target/i386/sse2-cmpsd-1.c: Likewise.
	* gcc.target/i386/sse2-comisd-1.c: Likewise.
	* gcc.target/i386/sse2-comisd-2.c: Likewise.
	* gcc.target/i386/sse2-comisd-3.c: Likewise.
	* gcc.target/i386/sse2-comisd-4.c: Likewise.
	* gcc.target/i386/sse2-comisd-5.c: Likewise.
	* gcc.target/i386/sse2-comisd-6.c: Likewise.
	* gcc.target/i386/sse2-copysign-vec.c: Likewise.
	* gcc.target/i386/sse2-cvtdq2pd-1.c: Likewise.
	* gcc.target/i386/sse2-cvtdq2ps-1.c: Likewise.
	* gcc.target/i386/sse2-cvtpd2dq-1.c: Likewise.
	* gcc.target/i386/sse2-cvtpd2ps-1.c: Likewise.
	* gcc.target/i386/sse2-cvtps2dq-1.c: Likewise.
	* gcc.target/i386/sse2-cvtps2pd-1.c: Likewise.
	* gcc.target/i386/sse2-cvtsd2si-1.c: Likewise.
	* gcc.target/i386/sse2-cvtsd2si-2.c: Likewise.
	* gcc.target/i386/sse2-cvtsd2ss-1.c: Likewise.
	* gcc.target/i386/sse2-cvtsi2sd-1.c: Likewise.
	* gcc.target/i386/sse2-cvtsi2sd-2.c: Likewise.
	* gcc.target/i386/sse2-cvtss2sd-1.c: Likewise.
	* gcc.target/i386/sse2-cvttpd2dq-1.c: Likewise.
	* gcc.target/i386/sse2-cvttps2dq-1.c: Likewise.
	* gcc.target/i386/sse2-cvttsd2si-1.c: Likewise.
	* gcc.target/i386/sse2-cvttsd2si-2.c: Likewise.
	* gcc.target/i386/sse2-divpd-1.c: Likewise.
	* gcc.target/i386/sse2-divsd-1.c: Likewise.
	* gcc.target/i386/sse2-init-v16qi-1.c: Likewise.
	* gcc.target/i386/sse2-init-v2di-1.c: Likewise.
	* gcc.target/i386/sse2-init-v4si-1.c: Likewise.
	* gcc.target/i386/sse2-init-v8hi-1.c: Likewise.
	* gcc.target/i386/sse2-lrint-vec.c: Likewise.
	* gcc.target/i386/sse2-lrintf-vec.c: Likewise.
	* gcc.target/i386/sse2-maxpd-1.c: Likewise.
	* gcc.target/i386/sse2-maxsd-1.c: Likewise.
	* gcc.target/i386/sse2-minpd-1.c: Likewise.
	* gcc.target/i386/sse2-minsd-1.c: Likewise.
	* gcc.target/i386/sse2-mmx.c: Likewise.
	* gcc.target/i386/sse2-movapd-1.c: Likewise.
	* gcc.target/i386/sse2-movapd-2.c: Likewise.
	* gcc.target/i386/sse2-movd-1.c: Likewise.
	* gcc.target/i386/sse2-movd-2.c: Likewise.
	* gcc.target/i386/sse2-movdqa-1.c: Likewise.
	* gcc.target/i386/sse2-movdqa-2.c: Likewise.
	* gcc.target/i386/sse2-movdqu-1.c: Likewise.
	* gcc.target/i386/sse2-movdqu-2.c: Likewise.
	* gcc.target/i386/sse2-movhpd-1.c: Likewise.
	* gcc.target/i386/sse2-movhpd-2.c: Likewise.
	* gcc.target/i386/sse2-movlpd-1.c: Likewise.
	* gcc.target/i386/sse2-movlpd-2.c: Likewise.
	* gcc.target/i386/sse2-movmskpd-1.c: Likewise.
	* gcc.target/i386/sse2-movntdq-1.c: Likewise.
	* gcc.target/i386/sse2-movntpd-1.c: Likewise.
	* gcc.target/i386/sse2-movq-1.c: Likewise.
	* gcc.target/i386/sse2-movq-2.c: Likewise.
	* gcc.target/i386/sse2-movq-3.c: Likewise.
	* gcc.target/i386/sse2-movsd-1.c: Likewise.
	* gcc.target/i386/sse2-movsd-2.c: Likewise.
	* gcc.target/i386/sse2-movupd-1.c: Likewise.
	* gcc.target/i386/sse2-movupd-2.c: Likewise.
	* gcc.target/i386/sse2-mulpd-1.c: Likewise.
	* gcc.target/i386/sse2-mulsd-1.c: Likewise.
	* gcc.target/i386/sse2-orpd-1.c: Likewise.
	* gcc.target/i386/sse2-packssdw-1.c: Likewise.
	* gcc.target/i386/sse2-packsswb-1.c: Likewise.
	* gcc.target/i386/sse2-packuswb-1.c: Likewise.
	* gcc.target/i386/sse2-paddb-1.c: Likewise.
	* gcc.target/i386/sse2-paddd-1.c: Likewise.
	* gcc.target/i386/sse2-paddq-1.c: Likewise.
	* gcc.target/i386/sse2-paddsb-1.c: Likewise.
	* gcc.target/i386/sse2-paddsw-1.c: Likewise.
	* gcc.target/i386/sse2-paddusb-1.c: Likewise.
	* gcc.target/i386/sse2-paddusw-1.c: Likewise.
	* gcc.target/i386/sse2-paddw-1.c: Likewise.
	* gcc.target/i386/sse2-pand-1.c: Likewise.
	* gcc.target/i386/sse2-pandn-1.c: Likewise.
	* gcc.target/i386/sse2-pavgb-1.c: Likewise.
	* gcc.target/i386/sse2-pavgw-1.c: Likewise.
	* gcc.target/i386/sse2-pcmpeqb-1.c: Likewise.
	* gcc.target/i386/sse2-pcmpeqd-1.c: Likewise.
	* gcc.target/i386/sse2-pcmpeqw-1.c: Likewise.
	* gcc.target/i386/sse2-pcmpgtb-1.c: Likewise.
	* gcc.target/i386/sse2-pcmpgtd-1.c: Likewise.
	* gcc.target/i386/sse2-pcmpgtw-1.c: Likewise.
	* gcc.target/i386/sse2-pmaddwd-1.c: Likewise.
	* gcc.target/i386/sse2-pmaxsw-1.c: Likewise.
	* gcc.target/i386/sse2-pmaxub-1.c: Likewise.
	* gcc.target/i386/sse2-pminsw-1.c: Likewise.
	* gcc.target/i386/sse2-pminub-1.c: Likewise.
	* gcc.target/i386/sse2-pmovmskb-1.c: Likewise.
	* gcc.target/i386/sse2-pmulhuw-1.c: Likewise.
	* gcc.target/i386/sse2-pmulhw-1.c: Likewise.
	* gcc.target/i386/sse2-pmullw-1.c: Likewise.
	* gcc.target/i386/sse2-pmuludq-1.c: Likewise.
	* gcc.target/i386/sse2-por-1.c: Likewise.
	* gcc.target/i386/sse2-psadbw-1.c: Likewise.
	* gcc.target/i386/sse2-pshufd-1.c: Likewise.
	* gcc.target/i386/sse2-pshufhw-1.c: Likewise.
	* gcc.target/i386/sse2-pshuflw-1.c: Likewise.
	* gcc.target/i386/sse2-pslld-1.c: Likewise.
	* gcc.target/i386/sse2-pslld-2.c: Likewise.
	* gcc.target/i386/sse2-pslldq-1.c: Likewise.
	* gcc.target/i386/sse2-psllq-1.c: Likewise.
	* gcc.target/i386/sse2-psllq-2.c: Likewise.
	* gcc.target/i386/sse2-psllw-1.c: Likewise.
	* gcc.target/i386/sse2-psllw-2.c: Likewise.
	* gcc.target/i386/sse2-psrad-1.c: Likewise.
	* gcc.target/i386/sse2-psrad-2.c: Likewise.
	* gcc.target/i386/sse2-psraw-1.c: Likewise.
	* gcc.target/i386/sse2-psraw-2.c: Likewise.
	* gcc.target/i386/sse2-psrld-1.c: Likewise.
	* gcc.target/i386/sse2-psrld-2.c: Likewise.
	* gcc.target/i386/sse2-psrldq-1.c: Likewise.
	* gcc.target/i386/sse2-psrlq-1.c: Likewise.
	* gcc.target/i386/sse2-psrlq-2.c: Likewise.
	* gcc.target/i386/sse2-psrlw-1.c: Likewise.
	* gcc.target/i386/sse2-psrlw-2.c: Likewise.
	* gcc.target/i386/sse2-psubb-1.c: Likewise.
	* gcc.target/i386/sse2-psubd-1.c: Likewise.
	* gcc.target/i386/sse2-psubq-1.c: Likewise.
	* gcc.target/i386/sse2-psubsb-1.c: Likewise.
	* gcc.target/i386/sse2-psubsw-1.c: Likewise.
	* gcc.target/i386/sse2-psubw-1.c: Likewise.
	* gcc.target/i386/sse2-punpckhbw-1.c: Likewise.
	* gcc.target/i386/sse2-punpckhdq-1.c: Likewise.
	* gcc.target/i386/sse2-punpckhqdq-1.c: Likewise.
	* gcc.target/i386/sse2-punpckhwd-1.c: Likewise.
	* gcc.target/i386/sse2-punpcklbw-1.c: Likewise.
	* gcc.target/i386/sse2-punpckldq-1.c: Likewise.
	* gcc.target/i386/sse2-punpcklqdq-1.c: Likewise.
	* gcc.target/i386/sse2-punpcklwd-1.c: Likewise.
	* gcc.target/i386/sse2-pxor-1.c: Likewise.
	* gcc.target/i386/sse2-set-epi32-1.c: Likewise.
	* gcc.target/i386/sse2-set-epi64x-1.c: Likewise.
	* gcc.target/i386/sse2-set-v16qi-1.c: Likewise.
	* gcc.target/i386/sse2-set-v16qi-2.c: Likewise.
	* gcc.target/i386/sse2-set-v16qi-3.c: Likewise.
	* gcc.target/i386/sse2-set-v8hi-1.c: Likewise.
	* gcc.target/i386/sse2-set-v8hi-1a.c: Likewise.
	* gcc.target/i386/sse2-set-v8hi-2.c: Likewise.
	* gcc.target/i386/sse2-set-v8hi-2a.c: Likewise.
	* gcc.target/i386/sse2-shufpd-1.c: Likewise.
	* gcc.target/i386/sse2-shufps-1.c: Likewise.
	* gcc.target/i386/sse2-sqrtpd-1.c: Likewise.
	* gcc.target/i386/sse2-subpd-1.c: Likewise.
	* gcc.target/i386/sse2-subsd-1.c: Likewise.
	* gcc.target/i386/sse2-ucomisd-1.c: Likewise.
	* gcc.target/i386/sse2-ucomisd-2.c: Likewise.
	* gcc.target/i386/sse2-ucomisd-3.c: Likewise.
	* gcc.target/i386/sse2-ucomisd-4.c: Likewise.
	* gcc.target/i386/sse2-ucomisd-5.c: Likewise.
	* gcc.target/i386/sse2-ucomisd-6.c: Likewise.
	* gcc.target/i386/sse2-unpack-1.c: Likewise.
	* gcc.target/i386/sse2-unpckhpd-1.c: Likewise.
	* gcc.target/i386/sse2-unpcklpd-1.c: Likewise.
	* gcc.target/i386/sse2-vec-1.c: Likewise.
	* gcc.target/i386/sse2-vec-2.c: Likewise.
	* gcc.target/i386/sse2-vec-3.c: Likewise.
	* gcc.target/i386/sse2-vec-4.c: Likewise.
	* gcc.target/i386/sse2-vec-5.c: Likewise.
	* gcc.target/i386/sse2-vec-6.c: Likewise.
	* gcc.target/i386/sse2-xorpd-1.c: Likewise.
	* gcc.target/i386/ssefn-2.c: Likewise.
	* gcc.target/i386/ssefn-4.c: Likewise.
	* gcc.target/i386/ssefp-1.c: Likewise.
	* gcc.target/i386/ssefp-2.c: Likewise.
	* gcc.target/i386/sseregparm-3.c: Likewise.
	* gcc.target/i386/sseregparm-4.c: Likewise.
	* gcc.target/i386/sseregparm-5.c: Likewise.
	* gcc.target/i386/sseregparm-6.c: Likewise.
	* gcc.target/i386/sseregparm-7.c: Likewise.
	* gcc.target/i386/ssetype-1.c: Likewise.
	* gcc.target/i386/ssetype-2.c: Likewise.
	* gcc.target/i386/ssetype-3.c: Likewise.
	* gcc.target/i386/ssetype-4.c: Likewise.
	* gcc.target/i386/ssetype-5.c: Likewise.
	* gcc.target/i386/unordcmp-1.c: Likewise.
	* gcc.target/i386/vararg-1.c: Likewise.
	* gcc.target/i386/vararg-2.c: Likewise.
	* gcc.target/i386/vararg-3.c: Likewise.
	* gcc.target/i386/vararg-4.c: Likewise.
	* gcc.target/i386/vararg-7.c: Likewise.
	* gcc.target/i386/vararg-8.c: Likewise.
	* gcc.target/i386/vecinit-1.c: Likewise.
	* gcc.target/i386/vecinit-2.c: Likewise.
	* gcc.target/i386/vecinit-3.c: Likewise.
	* gcc.target/i386/vecinit-4.c: Likewise.
	* gcc.target/i386/vecinit-5.c: Likewise.
	* gcc.target/i386/vecinit-6.c: Likewise.
	* gcc.target/i386/vectorize2.c: Likewise.
	* gcc.target/i386/vectorize3.c: Likewise.
	* gcc.target/i386/vectorize4.c: Likewise.
	* gcc.target/i386/vectorize6.c: Likewise.
	* gcc.target/i386/vectorize7.c: Likewise.
	* gcc.target/i386/vectorize8.c: Likewise.
	* gcc.target/i386/vperm-v2df.c: Likewise.
	* gcc.target/i386/vperm-v2di.c: Likewise.
	* gcc.target/i386/vperm-v4si-1.c: Likewise.
	* gcc.target/i386/xorps-sse2.c: Likewise.
	* gcc.target/i386/xorps.c: Likewise.
	* gfortran.dg/graphite/pr42326-1.f90: Likewise.
	* gfortran.dg/graphite/pr42326.f90: Likewise.
	* gfortran.dg/vect/fast-math-mgrid-resid.f: Likewise.

From-SVN: r159584