Dear Alex, all,
I was looking for fcvt.d.{w,l}{,u} in RISCVInstrInfoD and I’m not sure to
understand the current definitions:
138 def FCVT_D_W : FPUnaryOp_r<0b1101001, 0b000, FPR64, GPR, “fcvt.d.w”> {
139 let rs2 = 0b00000;
140 }
141
142 def FCVT_D_WU : FPUnaryOp_r<0b1101001, 0b000, FPR64, GPR, “fcvt.d.wu”> {
143 let rs2 = 0b00001;
144 }
162 def FCVT_D_L : FPUnaryOp_r_frm<0b1101001, FPR64, GPR, “fcvt.d.l”> {
163 let rs2 = 0b00010;
164 }
165 def : FPUnaryOpDynFrmAlias<FCVT_D_L, “fcvt.d.l”, FPR64, GPR>;
166
167 def FCVT_D_LU : FPUnaryOp_r_frm<0b1101001, FPR64, GPR, “fcvt.d.lu”> {
168 let rs2 = 0b00011;
169 }
I would expect FCVT_D_W and FCVT_D_WU to be FPUnaryOp_r_frm instead of
FPUnaryOp_r. Currently they seem to hard code the rounding mode to 0b000.
Is my understanding correct or I’m missing something?
Thank you very much,
Roger
