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adds vector_imm instructions to vector_functions, makes size of all involved registers a template parameter

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Eyck-Alexander Jentzsch 2025-02-12 20:19:25 +01:00
parent 6ce0d97e81
commit 51f3802394
3 changed files with 110 additions and 42 deletions
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64
gen_input/templates/interp/CORENAME.cpp.gtl
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@ -224,6 +224,70 @@ if(vector != null) {%>
throw new std::runtime_error("Unsupported sew bit value"); throw new std::runtime_error("Unsupported sew bit value");
} }
} }
void vector_vector_wv(uint8_t* V, uint8_t funct, uint64_t vl, uint64_t vstart, softvector::vtype_t vtype, bool vm, uint8_t vd, uint8_t vs2, uint8_t vs1, uint8_t sew_val){
switch(sew_val){
case 0b000:
softvector::vector_vector_op<${vlen}, uint16_t, uint8_t>(V, funct, vl, vstart, vtype, vm, vs2, vs1, vd);
break;
case 0b001:
softvector::vector_vector_op<${vlen}, uint32_t, uint16_t>(V, funct, vl, vstart, vtype, vm, vs2, vs1, vd);
break;
case 0b010:
softvector::vector_vector_op<${vlen}, uint64_t, uint32_t>(V, funct, vl, vstart, vtype, vm, vs2, vs1, vd);
break;
case 0b011: // would widen to 128 bits
default:
throw new std::runtime_error("Unsupported sew bit value");
}
}
void vector_imm_wv(uint8_t* V, uint8_t funct, uint64_t vl, uint64_t vstart, softvector::vtype_t vtype, bool vm, uint8_t vd, uint8_t vs2, int64_t imm, uint8_t sew_val){
switch(sew_val){
case 0b000:
softvector::vector_imm_op<${vlen}, uint16_t, uint8_t>(V, funct, vl, vstart, vtype, vm, vs2, imm, vd);
break;
case 0b001:
softvector::vector_imm_op<${vlen}, uint32_t, uint16_t>(V, funct, vl, vstart, vtype, vm, vs2, imm, vd);
break;
case 0b010:
softvector::vector_imm_op<${vlen}, uint64_t, uint32_t>(V, funct, vl, vstart, vtype, vm, vs2, imm, vd);
break;
case 0b011: // would widen to 128 bits
default:
throw new std::runtime_error("Unsupported sew bit value");
}
}
void vector_vector_ww(uint8_t* V, uint8_t funct, uint64_t vl, uint64_t vstart, softvector::vtype_t vtype, bool vm, uint8_t vd, uint8_t vs2, uint8_t vs1, uint8_t sew_val){
switch(sew_val){
case 0b000:
softvector::vector_vector_op<${vlen}, uint16_t, uint16_t, uint8_t>(V, funct, vl, vstart, vtype, vm, vs2, vs1, vd);
break;
case 0b001:
softvector::vector_vector_op<${vlen}, uint32_t, uint32_t, uint16_t>(V, funct, vl, vstart, vtype, vm, vs2, vs1, vd);
break;
case 0b010:
softvector::vector_vector_op<${vlen}, uint64_t, uint64_t, uint32_t>(V, funct, vl, vstart, vtype, vm, vs2, vs1, vd);
break;
case 0b011: // would widen to 128 bits
default:
throw new std::runtime_error("Unsupported sew bit value");
}
}
void vector_imm_ww(uint8_t* V, uint8_t funct, uint64_t vl, uint64_t vstart, softvector::vtype_t vtype, bool vm, uint8_t vd, uint8_t vs2, int64_t imm, uint8_t sew_val){
switch(sew_val){
case 0b000:
softvector::vector_imm_op<${vlen}, uint16_t, uint16_t, uint8_t>(V, funct, vl, vstart, vtype, vm, vs2, imm, vd);
break;
case 0b001:
softvector::vector_imm_op<${vlen}, uint32_t, uint32_t, uint16_t>(V, funct, vl, vstart, vtype, vm, vs2, imm, vd);
break;
case 0b010:
softvector::vector_imm_op<${vlen}, uint64_t, uint64_t, uint32_t>(V, funct, vl, vstart, vtype, vm, vs2, imm, vd);
break;
case 0b011: // would widen to 128 bits
default:
throw new std::runtime_error("Unsupported sew bit value");
}
}
<%}%> <%}%>
uint64_t fetch_count{0}; uint64_t fetch_count{0};
uint64_t tval{0}; uint64_t tval{0};

5
src/vm/vector_functions.h
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@ -71,9 +71,12 @@ uint64_t vector_load_store_index(void* core, std::function<bool(void*, uint64_t,
uint16_t VLEN, uint8_t XLEN, uint8_t addressed_register, uint8_t index_register, uint64_t base_addr, uint16_t VLEN, uint8_t XLEN, uint8_t addressed_register, uint8_t index_register, uint64_t base_addr,
uint64_t vl, uint64_t vstart, vtype_t vtype, bool vm, uint8_t elem_size_byte, uint64_t elem_count, uint64_t vl, uint64_t vstart, vtype_t vtype, bool vm, uint8_t elem_size_byte, uint64_t elem_count,
uint8_t segment_size, bool ordered); uint8_t segment_size, bool ordered);
template <unsigned VLEN, typename elem_t> template <unsigned VLEN, typename dest_elem_t, typename src2_elem_t = dest_elem_t, typename src1_elem_t = src2_elem_t>
void vector_vector_op(uint8_t* V, unsigned funct6, uint64_t vl, uint64_t vstart, vtype_t vtype, bool vm, unsigned vs2, unsigned vs1, void vector_vector_op(uint8_t* V, unsigned funct6, uint64_t vl, uint64_t vstart, vtype_t vtype, bool vm, unsigned vs2, unsigned vs1,
unsigned vd); unsigned vd);
template <unsigned VLEN, typename dest_elem_t, typename src2_elem_t = dest_elem_t, typename src1_elem_t = src2_elem_t>
void vector_imm_op(uint8_t* V, unsigned funct6, uint64_t vl, uint64_t vstart, vtype_t vtype, bool vm, unsigned vs2,
typename std::make_signed<src1_elem_t>::type imm, unsigned vd);
} // namespace softvector } // namespace softvector
#include "vm/vector_functions.hpp" #include "vm/vector_functions.hpp"
#endif /* _VM_VECTOR_FUNCTIONS_H_ */ #endif /* _VM_VECTOR_FUNCTIONS_H_ */

83
src/vm/vector_functions.hpp
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@ -64,49 +64,50 @@ template <unsigned VLEN> vmask_view read_vmask(uint8_t* V, uint16_t elem_count,
assert(mask_start + elem_count / 8 <= V + VLEN * RFS / 8); assert(mask_start + elem_count / 8 <= V + VLEN * RFS / 8);
return {mask_start, elem_count}; return {mask_start, elem_count};
} }
template <typename elem_t> std::function<elem_t(elem_t, elem_t)> get_funct(unsigned funct) { template <typename dest_elem_t, typename src2_elem_t = dest_elem_t, typename src1_elem_t = dest_elem_t>
std::function<dest_elem_t(src2_elem_t, src1_elem_t)> get_funct(unsigned funct) {
switch(funct) { switch(funct) {
case 0b000000: { case 0b000000: // VADD
// VADD case 0b110000: // VWADDU
return [](elem_t vs2, elem_t vs1) { return vs2 + vs1; }; case 0b110100: // VWADDU.W
} return [](src2_elem_t vs2, src1_elem_t vs1) { return vs2 + vs1; };
case 0b000010: { case 0b000010: // VSUB
// VSUB case 0b110010: // VWSUBU
} case 0b110110: // VWSUBU.W
case 0b000100: { return [](src2_elem_t vs2, src1_elem_t vs1) { return vs2 - vs1; };
// VMINU case 0b000011: // VRSUB
} return [](src2_elem_t vs2, src1_elem_t vs1) { return vs1 - vs2; };
case 0b000101: { case 0b001001: // VAND
// VMIN return [](src2_elem_t vs2, src1_elem_t vs1) { return vs1 & vs2; };
} case 0b001010: // VOR
case 0b000110: { return [](src2_elem_t vs2, src1_elem_t vs1) { return vs1 | vs2; };
// VMAXU case 0b001011: // VXOR
} return [](src2_elem_t vs2, src1_elem_t vs1) { return vs1 ^ vs2; };
case 0b000111: { case 0b110001: // VWADD
// VMAX case 0b110101: // VWADD.W
} return [](src2_elem_t vs2, src1_elem_t vs1) {
case 0b001001: { return static_cast<typename std::make_signed_t<dest_elem_t>>(static_cast<typename std::make_signed_t<src2_elem_t>>(vs2) +
// VAND static_cast<typename std::make_signed_t<src1_elem_t>>(vs1));
} };
case 0b001010: { case 0b110011: // VWSUB
// VOR case 0b110111: // VWSUB.W
} return [](src2_elem_t vs2, src1_elem_t vs1) {
case 0b001011: { return static_cast<typename std::make_signed_t<dest_elem_t>>(static_cast<typename std::make_signed_t<src2_elem_t>>(vs2) -
// VXOR static_cast<typename std::make_signed_t<src1_elem_t>>(vs1));
} };
default: default:
throw new std::runtime_error("Uknown funct in get_funct"); throw new std::runtime_error("Uknown funct in get_funct");
} }
} }
template <unsigned VLEN, typename elem_t> template <unsigned VLEN, typename dest_elem_t, typename src2_elem_t, typename src1_elem_t>
void vector_vector_op(uint8_t* V, unsigned funct6, uint64_t vl, uint64_t vstart, vtype_t vtype, bool vm, unsigned vs2, unsigned vs1, void vector_vector_op(uint8_t* V, unsigned funct6, uint64_t vl, uint64_t vstart, vtype_t vtype, bool vm, unsigned vs2, unsigned vs1,
unsigned vd) { unsigned vd) {
uint64_t elem_count = VLEN * vtype.lmul() / vtype.sew(); uint64_t elem_count = VLEN * vtype.lmul() / vtype.sew();
vmask_view mask_reg = read_vmask<VLEN>(V, elem_count); vmask_view mask_reg = read_vmask<VLEN>(V, elem_count);
auto vs1_view = get_vreg<VLEN, elem_t>(V, vs1, elem_count); auto vs1_view = get_vreg<VLEN, src1_elem_t>(V, vs1, elem_count);
auto vs2_view = get_vreg<VLEN, elem_t>(V, vs2, elem_count); auto vs2_view = get_vreg<VLEN, src2_elem_t>(V, vs2, elem_count);
auto vd_view = get_vreg<VLEN, elem_t>(V, vd, elem_count); auto vd_view = get_vreg<VLEN, dest_elem_t>(V, vd, elem_count);
auto fn = get_funct<elem_t>(funct6); auto fn = get_funct<dest_elem_t, src2_elem_t, src1_elem_t>(funct6);
// elements w/ index smaller than vstart are in the prestart and get skipped // elements w/ index smaller than vstart are in the prestart and get skipped
// body is from vstart to min(elem_count, vl) // body is from vstart to min(elem_count, vl)
for(unsigned idx = vstart; idx < std::min(elem_count, vl); idx++) { for(unsigned idx = vstart; idx < std::min(elem_count, vl); idx++) {
@ -119,20 +120,20 @@ void vector_vector_op(uint8_t* V, unsigned funct6, uint64_t vl, uint64_t vstart,
} }
// elements w/ index larger than elem_count are in the tail (fractional LMUL) // elements w/ index larger than elem_count are in the tail (fractional LMUL)
// elements w/ index larger than vl are in the tail // elements w/ index larger than vl are in the tail
unsigned maximum_elems = VLEN * vtype.lmul() / (sizeof(elem_t) * 8); unsigned maximum_elems = VLEN * vtype.lmul() / (sizeof(dest_elem_t) * 8);
for(unsigned idx = std::min(elem_count, vl); idx < maximum_elems; idx++) { for(unsigned idx = std::min(elem_count, vl); idx < maximum_elems; idx++) {
vd_view[idx] = vtype.vta() ? vd_view[idx] : vd_view[idx]; vd_view[idx] = vtype.vta() ? vd_view[idx] : vd_view[idx];
} }
return; return;
} }
template <unsigned VLEN, typename elem_t> template <unsigned VLEN, typename dest_elem_t, typename src2_elem_t, typename src1_elem_t>
void vector_imm_op(uint8_t* V, unsigned funct6, uint64_t vl, uint64_t vstart, vtype_t vtype, bool vm, unsigned vs2, void vector_imm_op(uint8_t* V, unsigned funct6, uint64_t vl, uint64_t vstart, vtype_t vtype, bool vm, unsigned vs2,
typename std::make_signed<elem_t>::type imm, unsigned vd) { typename std::make_signed<src1_elem_t>::type imm, unsigned vd) {
uint64_t elem_count = VLEN * vtype.lmul() / vtype.sew(); uint64_t elem_count = VLEN * vtype.lmul() / vtype.sew();
vmask_view mask_reg = read_vmask<VLEN>(V, elem_count); vmask_view mask_reg = read_vmask<VLEN>(V, elem_count);
auto vs2_view = get_vreg<VLEN, elem_t>(V, vs2, elem_count); auto vs2_view = get_vreg<VLEN, src2_elem_t>(V, vs2, elem_count);
auto vd_view = get_vreg<VLEN, elem_t>(V, vd, elem_count); auto vd_view = get_vreg<VLEN, dest_elem_t>(V, vd, elem_count);
auto fn = get_funct<elem_t>(funct6); auto fn = get_funct<dest_elem_t, src2_elem_t, src1_elem_t>(funct6);
// elements w/ index smaller than vstart are in the prestart and get skipped // elements w/ index smaller than vstart are in the prestart and get skipped
// body is from vstart to min(elem_count, vl) // body is from vstart to min(elem_count, vl)
for(unsigned idx = vstart; idx < std::min(elem_count, vl); idx++) { for(unsigned idx = vstart; idx < std::min(elem_count, vl); idx++) {
@ -145,7 +146,7 @@ void vector_imm_op(uint8_t* V, unsigned funct6, uint64_t vl, uint64_t vstart, vt
} }
// elements w/ index larger than elem_count are in the tail (fractional LMUL) // elements w/ index larger than elem_count are in the tail (fractional LMUL)
// elements w/ index larger than vl are in the tail // elements w/ index larger than vl are in the tail
unsigned maximum_elems = VLEN * vtype.lmul() / (sizeof(elem_t) * 8); unsigned maximum_elems = VLEN * vtype.lmul() / (sizeof(dest_elem_t) * 8);
for(unsigned idx = std::min(elem_count, vl); idx < maximum_elems; idx++) { for(unsigned idx = std::min(elem_count, vl); idx < maximum_elems; idx++) {
vd_view[idx] = vtype.vta() ? vd_view[idx] : vd_view[idx]; vd_view[idx] = vtype.vta() ? vd_view[idx] : vd_view[idx];
} }