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FPU area optimization sharing fmadd hard block

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This commit is contained in:
Blaise Tine
2020-12-27 17:31:10 -08:00
parent 25df233005
commit e83c4638a0
15 changed files with 111 additions and 856 deletions
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61
hw/rtl/fp_cores/svdpi/float_dpi.cpp
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@@ -10,11 +10,7 @@
extern "C" {
int dpi_register();
void dpi_fadd(int inst, bool enable, int a, int b, int* result);
void dpi_fsub(int inst, bool enable, int a, int b, int* result);
void dpi_fmul(int inst, bool enable, int a, int b, int* result);
void dpi_fmadd(int inst, bool enable, int a, int b, int c, int* result);
void dpi_fmsub(int inst, bool enable, int a, int b, int c, int* result);
void dpi_fdiv(int inst, bool enable, int a, int b, int* result);
void dpi_fsqrt(int inst, bool enable, int a, int* result);
void dpi_ftoi(int inst, bool enable, int a, int* result);
@@ -91,48 +87,6 @@ int dpi_register() {
return instances.allocate();
}
void dpi_fadd(int inst, bool enable, int a, int b, int* result) {
ShiftRegister& sr = instances.get(inst);
Float_t fa, fb, fr;
fa.i = a;
fb.i = b;
fr.f = fa.f + fb.f;
sr.ensure_init(LATENCY_FADDMUL);
sr.push(fr.i, enable);
*result = sr.top();
}
void dpi_fsub(int inst, bool enable, int a, int b, int* result) {
ShiftRegister& sr = instances.get(inst);
Float_t fa, fb, fr;
fa.i = a;
fb.i = b;
fr.f = fa.f - fb.f;
sr.ensure_init(LATENCY_FADDMUL);
sr.push(fr.i, enable);
*result = sr.top();
}
void dpi_fmul(int inst, bool enable, int a, int b, int* result) {
ShiftRegister& sr = instances.get(inst);
Float_t fa, fb, fr;
fa.i = a;
fb.i = b;
fr.f = fa.f * fb.f;
sr.ensure_init(LATENCY_FADDMUL);
sr.push(fr.i, enable);
*result = sr.top();
}
void dpi_fmadd(int inst, bool enable, int a, int b, int c, int* result) {
ShiftRegister& sr = instances.get(inst);
@@ -148,21 +102,6 @@ void dpi_fmadd(int inst, bool enable, int a, int b, int c, int* result) {
*result = sr.top();
}
void dpi_fmsub(int inst, bool enable, int a, int b, int c, int* result) {
ShiftRegister& sr = instances.get(inst);
Float_t fa, fb, fc, fr;
fa.i = a;
fb.i = b;
fc.i = c;
fr.f = fa.f * fb.f - fc.f;
sr.ensure_init(LATENCY_FMADD);
sr.push(fr.i, enable);
*result = sr.top();
}
void dpi_fdiv(int inst, bool enable, int a, int b, int* result) {
ShiftRegister& sr = instances.get(inst);