github_mirrors/vectorscan
3
0
Fork 1
mirror of https://github.com/VectorCamp/vectorscan.git synced 2025-09-29 11:16:29 +03:00
Code Issues Packages Projects Releases Wiki Activity

[VSX] correct lshiftbyte_m128/rshiftbyte_m128, variable_byte_shift

Browse Source
This commit is contained in:
Konstantinos Margaritis
2022-09-06 23:39:44 +03:00
parent 17467ff21b
commit 94fe406f0c
2 changed files with 56 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

51
unit/internal/simd_utils.cpp
View File

@@ -723,10 +723,59 @@ TEST(SimdUtilsTest, set2x128) {
}
#endif
#define TEST_LSHIFTBYTE128(v1, buf, l) { \
m128 v_shifted = lshiftbyte_m128(v1, l); \
storeu128(res, v_shifted); \
int i; \
for (i=0; i < l; i++) { \
assert(res[i] == 0); \
} \
for (; i < 16; i++) { \
assert(res[i] == vec[i - l]); \
} \
}
TEST(SimdUtilsTest, lshiftbyte128){
u8 vec[16];
u8 res[16];
for (int i=0; i<16; i++) {
vec[i]=i;
}
m128 v1 = loadu128(vec);
for (int j = 0; j<16; j++){
TEST_LSHIFTBYTE128(v1, vec, j);
}
}
#define TEST_RSHIFTBYTE128(v1, buf, l) { \
m128 v_shifted = rshiftbyte_m128(v1, l); \
storeu128(res, v_shifted); \
int i; \
for (i=15; i >= 16 - l; i--) { \
assert(res[i] == 0); \
} \
for (; i >= 0; i--) { \
assert(res[i] == vec[i + l]); \
} \
}
TEST(SimdUtilsTest, rshiftbyte128){
u8 vec[16];
u8 res[16];
for (int i=0; i<16; i++) {
vec[i]=i;
}
m128 v1 = loadu128(vec);
for (int j = 0; j<16; j++){
TEST_RSHIFTBYTE128(v1, vec, j);
}
}
TEST(SimdUtilsTest, variableByteShift128) {
char base[] = "0123456789ABCDEF";
m128 in = loadu128(base);
EXPECT_TRUE(!diff128(rshiftbyte_m128(in, 0),
variable_byte_shift_m128(in, 0)));
EXPECT_TRUE(!diff128(rshiftbyte_m128(in, 1),
@@ -773,7 +822,7 @@ TEST(SimdUtilsTest, variableByteShift128) {
EXPECT_TRUE(!diff128(lshiftbyte_m128(in, 10),
variable_byte_shift_m128(in, 10)));
EXPECT_TRUE(!diff128(zeroes128(), variable_byte_shift_m128(in, 16)));
EXPECT_TRUE(!diff128(lshiftbyte_m128(in, 15), variable_byte_shift_m128(in, 15)));
EXPECT_TRUE(!diff128(zeroes128(), variable_byte_shift_m128(in, -16)));
}