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Speed up truffle with 256b TBL instructions

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256b wide SVE vectors allow some simplification of truffle.
Up to 40% speedup on graviton3. Going from 12500 MB/s to 17000 MB/s
onhe microbenchmark.
SVE2 also offer this capability for 128b vector with a speedup around
25% compared to normal SVE

Add unit tests and benchmark for this wide variant

Signed-off-by: Yoan Picchi <yoan.picchi@arm.com>
This commit is contained in:
Yoan Picchi
2024-04-23 12:04:40 +00:00
parent 154cb6333b
commit 7054378c93
23 changed files with 1125 additions and 78 deletions
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4
src/nfa/mcclellandump.cpp
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@@ -181,6 +181,9 @@ void dumpAccelText(FILE *f, const union AccelAux *accel) {
case ACCEL_TRUFFLE:
fprintf(f, ":M");
break;
case ACCEL_TRUFFLE_WIDE:
fprintf(f, ":MM");
break;
default:
fprintf(f, ":??");
break;
@@ -200,6 +203,7 @@ void dumpAccelDot(FILE *f, u16 i, const union AccelAux *accel) {
case ACCEL_SHUFTI:
case ACCEL_DSHUFTI:
case ACCEL_TRUFFLE:
case ACCEL_TRUFFLE_WIDE:
fprintf(f, "%u [ color = darkgreen style=diagonals ];\n", i);
break;
default: