hi,   Insometarget,itislimitedtoissuetwoinsnstogetherwithchangethesameregister,so Imakeapatchtoextendtheliverangeuntiltheendofvliwtoavoidit.(Theinsn73startwithinsn:TI,soitwillbeissuedtogetherwithothersinsnsuntilanewinsnstartwithinsn:TI,suchasinsn71)TheregrenamecanknownthemodeV2VFininsn73needtwosuccessiveregisters,i.e.v2andv3,hereisdumpsnippetbeforetheregrename.(insn:TI7376714(set(reg/v:V2VF37v2[orig:180_62][180])(unspec:V2VF[(reg/v:VHF43v8[orig:210Dest_value][210])(reg/v:VHF43v8[orig:210Dest_value][210])]UNSPEC_HFSQMAG_32X32))"../test_modify.c":57710{hfsqmag_v2vf}(expr_list:REG_DEAD(reg/v:VHF43v8[orig:210Dest_value][210])(expr_list:REG_UNUSED(reg:VHF38v3)(expr_list:REG_STAGE(const_int2[0x2])(expr_list:REG_CYCLE(const_int2[0x2])(expr_list:REG_UNITS(const_int256[0x100])(nil)))))))(insn71732434(set(reg:VHF43v8[orig:265MEM[(constvfloat32x16*)Src_base_134]][265])(mem:VHF(reg/v/f:DI13a13[orig:207Src_base][207])[1MEM[(constvfloat32x16*)Src_base_134]+0S64A512]))"../test_modify.c":56450{movvhf_internal}(expr_list:REG_STAGE(const_int1[0x1])(expr_list:REG_CYCLE(const_int2[0x2])(nil))))Then,intheregrename,theinsn71willbetransformedintofollowingcodewithregisterv3,sothereisanconflictbetweeninsn73andinsn71,asbothofthemsetthev3register.Registerv2(2):73[SVEC_REGS]Registerv8(1):71[VEC_ALL_REGS]....(insn71732434(set(reg:VHF38v3[orig:265MEM[(constvfloat32x16*)Src_base_134]][265])(mem:VHF(reg/v/f:DI13a13[orig:207Src_base][207])[1MEM[(constvfloat32x16*)Src_base_134]+0S64A512]))"../test_modify.c":56450{movvhf_internal}(expr_list:REG_STAGE(const_int1[0x1]) (expr_list:REG_CYCLE(const_int2[0x2]) 随心邮-在微信里收发邮件，及时省电又安心