this saves like 200M instructions

minigeth/crypto/btcec/genprecomps.go

@@ -11,9 +11,6 @@
 package main
 
 import (
-	"bytes"
-	"compress/zlib"
-	"encoding/base64"
 	"fmt"
 	"log"
 	"os"
@@ -30,7 +27,7 @@ func main() {
 
 	// Compress the serialized byte points.
 	serialized := btcec.S256().SerializedBytePoints()
-	var compressed bytes.Buffer
+	/*var compressed bytes.Buffer
 	w := zlib.NewWriter(&compressed)
 	if _, err := w.Write(serialized); err != nil {
 		fmt.Println(err)
@@ -40,7 +37,7 @@ func main() {
 
 	// Encode the compressed byte points with base64.
 	encoded := make([]byte, base64.StdEncoding.EncodedLen(compressed.Len()))
-	base64.StdEncoding.Encode(encoded, compressed.Bytes())
+	base64.StdEncoding.Encode(encoded, compressed.Bytes())*/
 
 	fmt.Fprintln(fi, "// Copyright (c) 2015 The btcsuite developers")
 	fmt.Fprintln(fi, "// Use of this source code is governed by an ISC")
@@ -51,7 +48,7 @@ func main() {
 	fmt.Fprintln(fi, "// Auto-generated file (see genprecomps.go)")
 	fmt.Fprintln(fi, "// DO NOT EDIT")
 	fmt.Fprintln(fi)
-	fmt.Fprintf(fi, "var secp256k1BytePoints = %q\n", string(encoded))
+	fmt.Fprintf(fi, "var secp256k1BytePoints = %q\n", string(serialized))
 
 	a1, b1, a2, b2 := btcec.S256().EndomorphismVectors()
 	fmt.Println("The following values are the computed linearly " +

minigeth/crypto/btcec/precompute.go

@@ -5,11 +5,7 @@
 package btcec
 
 import (
-	"compress/zlib"
-	"encoding/base64"
 	"encoding/binary"
-	"io/ioutil"
-	"strings"
 )
 
 //go:generate go run -tags gensecp256k1 genprecomps.go
@@ -29,7 +25,7 @@ func loadS256BytePoints() error {
 
 	// Decompress the pre-computed table used to accelerate scalar base
 	// multiplication.
-	decoder := base64.NewDecoder(base64.StdEncoding, strings.NewReader(bp))
+	/*decoder := base64.NewDecoder(base64.StdEncoding, strings.NewReader(bp))
 	r, err := zlib.NewReader(decoder)
 	if err != nil {
 		return err
@@ -37,7 +33,8 @@ func loadS256BytePoints() error {
 	serialized, err := ioutil.ReadAll(r)
 	if err != nil {
 		return err
-	}
+	}*/
+	serialized := []byte(bp)
 
 	// Deserialize the precomputed byte points and set the curve to them.
 	offset := 0

mipigeth/run.py

@@ -44,6 +44,7 @@ instrumenting_all = False
 instructions_seen = set()
 profiler = defaultdict(int)
 phit = 0
+PROFILE = os.getenv("PROFILE", False)
 def hook_code_simple(uc, address, size, user_data):
   global icount, bcount, phit
   #assert size == 4
@@ -57,12 +58,13 @@ def hook_code_simple(uc, address, size, user_data):
       #instructions_seen.add(dat.mnemonic)
       #print(sorted(list(instructions_seen)))
       symbol = r[address] if address in r else "UNKNOWN"
-      profiler[symbol] += 1
-      phit += 1
       print("%10d(%2d): %8x %-80s %s" % (icount, newicount, address, symbol, dat))
-      if bcount%1000000 == 0:
-        for k,v in sorted(profiler.items(), key=lambda x: -x[1])[:10]:
-          print("%-80s : %.2f%%" % (k, (v/phit)*100.))
+      if PROFILE:
+        profiler[symbol] += 1
+        phit += 1
+        if bcount%1000000 == 0:
+          for k,v in sorted(profiler.items(), key=lambda x: -x[1])[:10]:
+            print("%-80s : %.2f%%" % (k, (v/phit)*100.))
     icount += newicount
     bcount += 1
     return True