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Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main

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This commit is contained in:
Ross Thompson 2022-03-08 18:05:35 -06:00
commit ac9528b450
2 changed files with 102 additions and 8 deletions
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104
pipelined/src/fma/fma16_testgen.c
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@ -11,6 +11,7 @@ typedef union sp {
// lists of tests, terminated with 0x8000
uint16_t easyExponents[] = {15, 0x8000};
uint16_t medExponents[] = {1, 14, 15, 16, 20, 30, 0x8000};
uint16_t allExponents[] = {1, 15, 16, 30, 31, 0x8000};
uint16_t easyFracts[] = {0, 0x200, 0x8000}; // 1.0 and 1.1
uint16_t medFracts[] = {0, 0x200, 0x001, 0x3FF, 0x8000};
uint16_t zeros[] = {0x0000, 0x8000};
@ -37,7 +38,7 @@ float convFloat(float16_t f16) {
void genCase(FILE *fptr, float16_t x, float16_t y, float16_t z, int mul, int add, int negp, int negz, int zeroAllowed, int infAllowed, int nanAllowed) {
float16_t result;
int op;
char calc[80];
char calc[80], flags[80];
float32_t x32, y32, z32, r32;
float xf, yf, zf, rf;
float16_t smallest;
@ -47,8 +48,15 @@ void genCase(FILE *fptr, float16_t x, float16_t y, float16_t z, int mul, int add
if (negp) x.v ^= 0x8000; // flip sign of x to negate p
if (negz) z.v ^= 0x8000; // flip sign of z to negate z
op = mul<<3 | add<<2 | negp<<1 | negz;
softfloat_exceptionFlags = 0; // clear exceptions
result = f16_mulAdd(x, y, z);
sprintf(flags, "NV: %d OF: %d UF: %d NX: %d",
(softfloat_exceptionFlags >> 4) % 2,
(softfloat_exceptionFlags >> 2) % 2,
(softfloat_exceptionFlags >> 1) % 2,
(softfloat_exceptionFlags) % 2);
// convert to floats for printing
xf = convFloat(x);
yf = convFloat(y);
@ -67,7 +75,7 @@ void genCase(FILE *fptr, float16_t x, float16_t y, float16_t z, int mul, int add
if (resultmag.v == 0x0000 && !zeroAllowed) fprintf(fptr, "// skip zero: ");
if ((resultmag.v == 0x7C00 || resultmag.v == 0x7BFF) && !infAllowed) fprintf(fptr, "// Skip inf: ");
if (resultmag.v > 0x7C00 && !nanAllowed) fprintf(fptr, "// Skip NaN: ");
fprintf(fptr, "%04x_%04x_%04x_%02x_%04x // %s\n", x.v, y.v, z.v, op, result.v, calc);
fprintf(fptr, "%04x_%04x_%04x_%02x_%04x_%02x // %s %s\n", x.v, y.v, z.v, op, result.v, softfloat_exceptionFlags, calc, flags);
}
void prepTests(uint16_t *e, uint16_t *f, char *testName, char *desc, float16_t *cases,
@ -107,8 +115,8 @@ void genMulTests(uint16_t *e, uint16_t *f, int sgn, char *testName, char *desc,
fclose(fptr);
}
void genAddTests(uint16_t *e, uint16_t *f, int sgn, char *testName, char *desc) {
int i, j, numCases;
void genAddTests(uint16_t *e, uint16_t *f, int sgn, char *testName, char *desc, int zeroAllowed, int infAllowed, int nanAllowed) {
int i, j, k, numCases;
float16_t x, y, z;
float16_t cases[100000];
FILE *fptr;
@ -122,7 +130,72 @@ void genAddTests(uint16_t *e, uint16_t *f, int sgn, char *testName, char *desc)
x.v = cases[i].v;
for (j=0; j<numCases; j++) {
z.v = cases[j].v;
//genCase(fptr, x, y, z, 0, 1, 0, 0);
for (k=0; k<=sgn; k++) {
z.v ^= (k<<15);
genCase(fptr, x, y, z, 0, 1, 0, 0, zeroAllowed, infAllowed, nanAllowed);
}
}
}
fclose(fptr);
}
void genFMATests(uint16_t *e, uint16_t *f, int sgn, char *testName, char *desc, int zeroAllowed, int infAllowed, int nanAllowed) {
int i, j, k, l, numCases;
float16_t x, y, z;
float16_t cases[100000];
FILE *fptr;
char fn[80];
sprintf(fn, "work/%s.tv", testName);
fptr = fopen(fn, "w");
prepTests(e, f, testName, desc, cases, fptr, &numCases);
for (i=0; i < numCases; i++) {
x.v = cases[i].v;
for (j=0; j<numCases; j++) {
y.v = cases[j].v;
for (k=0; k<numCases; k++) {
z.v = cases[k].v;
for (l=0; l<=sgn; l++) {
z.v ^= (l<<15);
genCase(fptr, x, y, z, 1, 1, 0, 0, zeroAllowed, infAllowed, nanAllowed);
}
}
}
}
fclose(fptr);
}
void genSpecialTests(uint16_t *e, uint16_t *f, int sgn, char *testName, char *desc, int zeroAllowed, int infAllowed, int nanAllowed) {
int i, j, k, sx, sy, sz, numCases;
float16_t x, y, z;
float16_t cases[100000];
FILE *fptr;
char fn[80];
sprintf(fn, "work/%s.tv", testName);
fptr = fopen(fn, "w");
prepTests(e, f, testName, desc, cases, fptr, &numCases);
cases[numCases].v = 0x0000; // add +0 case
cases[numCases+1].v = 0x8000; // add -0 case
numCases += 2;
for (i=0; i < numCases; i++) {
x.v = cases[i].v;
for (j=0; j<numCases; j++) {
y.v = cases[j].v;
for (k=0; k<numCases; k++) {
z.v = cases[k].v;
for (sx=0; sx<=sgn; sx++) {
x.v ^= (sx<<15);
for (sy=0; sy<=sgn; sy++) {
y.v ^= (sy<<15);
for (sz=0; sz<=sgn; sz++) {
z.v ^= (sz<<15);
genCase(fptr, x, y, z, 1, 1, 0, 0, zeroAllowed, infAllowed, nanAllowed);
}
}
}
}
}
}
fclose(fptr);
@ -138,5 +211,26 @@ int main()
genMulTests(medExponents, medFracts, 0, "fmul_1", "// Multiply with various exponents and unsigned fractions, RZ", 0, 0, 0);
genMulTests(medExponents, medFracts, 1, "fmul_2", "// Multiply with various exponents and signed fractions, RZ", 0, 0, 0);
// Test cases: addition
genAddTests(easyExponents, easyFracts, 0, "fadd_0", "// Add with exponent of 0, significand of 1.0 and 1.1, RZ", 0, 0, 0);
genAddTests(medExponents, medFracts, 0, "fadd_1", "// Add with various exponents and unsigned fractions, RZ", 0, 0, 0);
genAddTests(medExponents, medFracts, 1, "fadd_2", "// Add with various exponents and signed fractions, RZ", 0, 0, 0);
// Test cases: FMA
genFMATests(easyExponents, easyFracts, 0, "fma_0", "// FMA with exponent of 0, significand of 1.0 and 1.1, RZ", 0, 0, 0);
genFMATests(medExponents, medFracts, 0, "fma_1", "// FMA with various exponents and unsigned fractions, RZ", 0, 0, 0);
genFMATests(medExponents, medFracts, 1, "fma_2", "// FMA with various exponents and signed fractions, RZ", 0, 0, 0);
// Test cases: Zero, Infinity, NaN
genSpecialTests(allExponents, medFracts, 1, "fma_special_rz", "// FMA with special cases, RZ", 1, 1, 1);
// Full test cases with other rounding modes
softfloat_roundingMode = softfloat_round_near_even;
genSpecialTests(allExponents, medFracts, 1, "fma_special_rne", "// FMA with special cases, RNE", 1, 1, 1);
softfloat_roundingMode = softfloat_round_min;
genSpecialTests(allExponents, medFracts, 1, "fma_special_rm", "// FMA with special cases, RM", 1, 1, 1);
softfloat_roundingMode = softfloat_round_max;
genSpecialTests(allExponents, medFracts, 1, "fma_special_rp", "// FMA with special cases, RP", 1, 1, 1);
return 0;
}

6
setup.sh
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@ -15,7 +15,7 @@ echo \$WALLY set to ${WALLY}
export RISCV=/opt/riscv # change this if you installed the tools in a different location
# Tools
# GCCZ
# GCC
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$RISCV/riscv-gnu-toolchain/lib:$RISCV/riscv-gnu-toolchain/riscv64-unknown-elf/lib
export PATH=$PATH:$RISCV/riscv-gnu-toolchain/bin:$RISCV/riscv-gnu-toolchain/riscv64-unknown-elf/bin # GCC tools
# Spike
@ -26,8 +26,8 @@ export PATH=$WALLY/bin:$PATH
# Verilator
export PATH=/usr/local/bin/verilator:$PATH # Change this for your path to Verilator
# ModelSim/Questa (vsim)
export PATH=/cad/mentor/questa_sim-2021.2_1/questasim/bin:$PATH # Change this for your path to Modelsim
export PATH=/cad/mentor/questa_sim-2022.1_1/questasim/bin:$PATH # Change this for your path to Modelsim
export PATH=/cad/mentor/questa_sim-2021.2_1/questasim/bin:$PATH # Change this for your path to Modelsim, or delete
export PATH=/cad/mentor/questa_sim-2022.1_1/questasim/bin:$PATH # Change this for your path to Modelsim
export MGLS_LICENSE_FILE=1717@solidworks.eng.hmc.edu # Change this to your Siemens license server
export PATH=/cad/synopsys/SYN/bin:$PATH # Change this for your path to Design Compiler
export SNPSLMD_LICENSE_FILE=27020@134.173.38.214