search for: adderm

hi Tim,guys, it was regarding splitting 16-bit ADDC to two 8-bit ADDC+ADDE. the 8-bit ADDE instruction is defined as: let Constraints="$dst=$op0",mayStore=1, hasSideEffects=0,neverHasSideEffects=1 in def ADDErm: myInstr <0x0, (outs Intregs:$dst) (ins Intregs:$op0,MEMi:$op1), "", [set IntRegs:$dest (adde IntRegs:$op0, (load ADDRi:$op1))] > very unlucky, this instruction failed. in the generated match table, there was flag OPFL_Chain. it caused a token factor node to be created in switch...

...,ch = load 0x49606f0, 0x49736d0, 0x4972cd0<LD1[@a+1]> [ID=14] 0x49737d0: <multiple use> 0x4972bd0: <multiple use> 0x4972dd0: i32 = TargetGlobalAddress<i16* @b> + 1 0x49606f0: <multiple use> 0x4977a20: <multiple use> 0x4977820: i8,ch,glue = ADDerm 0x49737d0, 0x4972bd0, 0x4972dd0, 0x49606f0, 0x4977a20:1<Mem:LD1[@b+1]> 0x4972bd0: <multiple use> 0x49731d0: i32 = TargetGlobalAddress<i16* @a> 0 0x4976c20: <multiple use> 0x49606f0: <multiple use> 0x49737d0: <multiple use> 0x4976c2...