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area(vcpop.v): use cnt8 to get cnt16/32/64 #163

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Nov 26, 2024
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area(vcpop.v): use cnt8 to get cnt16/32/64 #163

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34 changes: 21 additions & 13 deletions src/main/scala/yunsuan/vector/VectorALU/VIntMisc64b.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -293,18 +293,15 @@ class VIntMisc64b extends Module {
val countResult_32 = Wire(UInt(32.W))
val countResult_64 = Wire(UInt(64.W))
val pop_8 = Wire(Vec(8, UInt(8.W)))
val pop_16 = Wire(Vec(4, UInt(16.W)))
val pop_32 = Wire(Vec(2, UInt(32.W)))
val pop_64 = Wire(Vec(1, UInt(64.W)))
val pop_16 = Wire(Vec(4, UInt(5.W)))
val pop_32 = Wire(Vec(2, UInt(6.W)))
val pop_64 = Wire(Vec(1, UInt(7.W)))
val cnt8 = Wire(Vec(8, UInt(8.W)))
val cnt16 = Wire(Vec(4, UInt(16.W)))
val cnt32 = Wire(Vec(2, UInt(32.W)))
val cnt64 = Wire(Vec(1, UInt(64.W)))

pop_8 := vs2.asTypeOf(pop_8)
pop_16 := vs2.asTypeOf(pop_16)
pop_32 := vs2.asTypeOf(pop_32)
pop_64 := vs2.asTypeOf(pop_64)

for (i <- 0 until 4) {
countResult_8(i) := Mux(opcode.isClz, vs2(8*i+7, 8*i), VecInit(vs2(8*i+7, 8*i).asBools.reverse).asUInt)
Expand Down Expand Up @@ -361,13 +358,24 @@ class VIntMisc64b extends Module {
cnt8(5) := Mux(opcode.isVcpop, PopCount(pop_8(5)), cnt16_1_tmp)
cnt8(6) := Mux(opcode.isVcpop, PopCount(pop_8(6)), cnt32_tmp)
cnt8(7) := Mux(opcode.isVcpop, PopCount(pop_8(7)), cnt64_tmp)
cnt16(0) := Mux(opcode.isVcpop, PopCount(pop_16(0)), cnt16_0_tmp)
cnt16(1) := Mux(opcode.isVcpop, PopCount(pop_16(1)), cnt16_1_tmp)
cnt16(2) := Mux(opcode.isVcpop, PopCount(pop_16(2)), cnt32_tmp)
cnt16(3) := Mux(opcode.isVcpop, PopCount(pop_16(3)), cnt64_tmp)
cnt32(0) := Mux(opcode.isVcpop, PopCount(pop_32(0)), cnt32_tmp)
cnt32(1) := Mux(opcode.isVcpop, PopCount(pop_32(1)), cnt64_tmp)
cnt64(0) := Mux(opcode.isVcpop, PopCount(pop_64(0)), cnt64_tmp)

pop_16(0) := cnt8(0) +& cnt8(1)
pop_16(1) := cnt8(2) +& cnt8(3)
pop_16(2) := cnt8(4) +& cnt8(5)
pop_16(3) := cnt8(6) +& cnt8(7)

pop_32(0) := pop_16(0) +& pop_16(1)
pop_32(1) := pop_16(2) +& pop_16(3)

pop_64(0) := pop_32(0) +& pop_32(1)

cnt16(0) := Mux(opcode.isVcpop, pop_16(0), cnt16_0_tmp)
cnt16(1) := Mux(opcode.isVcpop, pop_16(1), cnt16_1_tmp)
cnt16(2) := Mux(opcode.isVcpop, pop_16(2), cnt32_tmp)
cnt16(3) := Mux(opcode.isVcpop, pop_16(3), cnt64_tmp)
cnt32(0) := Mux(opcode.isVcpop, pop_32(0), cnt32_tmp)
cnt32(1) := Mux(opcode.isVcpop, pop_32(1), cnt64_tmp)
cnt64(0) := Mux(opcode.isVcpop, pop_64(0), cnt64_tmp)

countResult := Mux1H(
Seq(
Expand Down
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