str4d
diff --git a/‎.cirrus.yml
+42-56 b/‎.cirrus.yml
+42-56
diff --git a/‎.gitattributes
+2-2 b/‎.gitattributes
+2-2
diff --git a/‎.gitignore
+8-2 b/‎.gitignore
+8-2
@@ -4,10 +4,10 @@ env:
   # Specific warnings can be disabled with -Wno-error=foo.
   # -pedantic-errors is not equivalent to -Werror=pedantic and thus not implied by -Werror according to the GCC manual.
   WERROR_CFLAGS: -Werror -pedantic-errors
-  MAKEFLAGS: -j2
+  MAKEFLAGS: -j4
   BUILD: check
   ### secp256k1 config
-  STATICPRECOMPUTATION: yes
+  ECMULTWINDOW: auto
   ECMULTGENPRECISION: auto
   ASM: no
   WIDEMUL: auto
@@ -23,6 +23,8 @@ env:
   BENCH: yes
   SECP256K1_BENCH_ITERS: 2
   CTIMETEST: yes
+  # Compile and run the tests
+  EXAMPLES: yes
 
 cat_logs_snippet: &CAT_LOGS
   always:
@@ -50,28 +52,32 @@ merge_base_script_snippet: &MERGE_BASE
     - git config --global user.name "ci"
     - git merge FETCH_HEAD  # Merge base to detect silent merge conflicts
 
-task:
-  name: "x86_64: Linux (Debian stable)"
+linux_container_snippet: &LINUX_CONTAINER
   container:
     dockerfile: ci/linux-debian.Dockerfile
     # Reduce number of CPUs to be able to do more builds in parallel.
     cpu: 1
+    # Gives us more CPUs for free if they're available.
+    greedy: true
     # More than enough for our scripts.
     memory: 1G
+
+task:
+  name: "x86_64: Linux (Debian stable)"
+  << : *LINUX_CONTAINER
   matrix: &ENV_MATRIX
     - env: {WIDEMUL:  int64,  RECOVERY: yes}
-    - env: {WIDEMUL:  int64,                 ECDH: yes, EXPERIMENTAL: yes, SCHNORRSIG: yes}
+    - env: {WIDEMUL:  int64,                 ECDH: yes, SCHNORRSIG: yes}
     - env: {WIDEMUL: int128}
-    - env: {WIDEMUL: int128,  RECOVERY: yes,            EXPERIMENTAL: yes, SCHNORRSIG: yes}
-    - env: {WIDEMUL: int128,                 ECDH: yes, EXPERIMENTAL: yes, SCHNORRSIG: yes}
+    - env: {WIDEMUL: int128,  RECOVERY: yes,            SCHNORRSIG: yes}
+    - env: {WIDEMUL: int128,                 ECDH: yes, SCHNORRSIG: yes}
     - env: {WIDEMUL: int128,  ASM: x86_64}
-    - env: {                  RECOVERY: yes,            EXPERIMENTAL: yes, SCHNORRSIG: yes}
-    - env: {                  STATICPRECOMPUTATION: no}
+    - env: {                  RECOVERY: yes,            SCHNORRSIG: yes}
     - env: {BUILD: distcheck, WITH_VALGRIND: no, CTIMETEST: no, BENCH: no}
     - env: {CPPFLAGS: -DDETERMINISTIC}
     - env: {CFLAGS: -O0, CTIMETEST: no}
-    - env: { ECMULTGENPRECISION: 2 }
-    - env: { ECMULTGENPRECISION: 8 }
+    - env: { ECMULTGENPRECISION: 2, ECMULTWINDOW: 2 }
+    - env: { ECMULTGENPRECISION: 8, ECMULTWINDOW: 4 }
   matrix:
     - env:
         CC: gcc
@@ -84,15 +90,11 @@ task:
 
 task:
   name: "i686: Linux (Debian stable)"
-  container:
-    dockerfile: ci/linux-debian.Dockerfile
-    cpu: 1
-    memory: 1G
+  << : *LINUX_CONTAINER
   env:
     HOST: i686-linux-gnu
     ECDH: yes
     RECOVERY: yes
-    EXPERIMENTAL: yes
     SCHNORRSIG: yes
   matrix:
     - env:
@@ -134,8 +136,10 @@ task:
   ##   - rm /tmp/.com.apple.dt.CommandLineTools.installondemand.in-progress
   ##
   brew_valgrind_pre_script:
+    # Retry a few times because this tends to fail randomly.
+    - for i in {1..5}; do brew update && break || sleep 15; done
     - brew config
-    - brew tap --shallow LouisBrunner/valgrind
+    - brew tap LouisBrunner/valgrind
     # Fetch valgrind source but don't build it yet.
     - brew fetch --HEAD LouisBrunner/valgrind/valgrind
   brew_valgrind_cache:
@@ -165,18 +169,14 @@ task:
 
 task:
   name: "s390x (big-endian): Linux (Debian stable, QEMU)"
-  container:
-    dockerfile: ci/linux-debian.Dockerfile
-    cpu: 1
-    memory: 1G
+  << : *LINUX_CONTAINER
   env:
     WRAPPER_CMD: qemu-s390x
     SECP256K1_TEST_ITERS: 16
     HOST: s390x-linux-gnu
     WITH_VALGRIND: no
     ECDH: yes
     RECOVERY: yes
-    EXPERIMENTAL: yes
     SCHNORRSIG: yes
     CTIMETEST: no
   << : *MERGE_BASE
@@ -188,42 +188,34 @@ task:
 
 task:
   name: "ARM32: Linux (Debian stable, QEMU)"
-  container:
-    dockerfile: ci/linux-debian.Dockerfile
-    cpu: 1
-    memory: 1G
+  << : *LINUX_CONTAINER
   env:
     WRAPPER_CMD: qemu-arm
     SECP256K1_TEST_ITERS: 16
     HOST: arm-linux-gnueabihf
     WITH_VALGRIND: no
     ECDH: yes
     RECOVERY: yes
-    EXPERIMENTAL: yes
     SCHNORRSIG: yes
     CTIMETEST: no
   matrix:
     - env: {}
-    - env: {ASM: arm}
+    - env: {EXPERIMENTAL: yes, ASM: arm}
   << : *MERGE_BASE
   test_script:
     - ./ci/cirrus.sh
   << : *CAT_LOGS
 
 task:
   name: "ARM64: Linux (Debian stable, QEMU)"
-  container:
-    dockerfile: ci/linux-debian.Dockerfile
-    cpu: 1
-    memory: 1G
+  << : *LINUX_CONTAINER
   env:
     WRAPPER_CMD: qemu-aarch64
     SECP256K1_TEST_ITERS: 16
     HOST: aarch64-linux-gnu
     WITH_VALGRIND: no
     ECDH: yes
     RECOVERY: yes
-    EXPERIMENTAL: yes
     SCHNORRSIG: yes
     CTIMETEST: no
   << : *MERGE_BASE
@@ -233,18 +225,14 @@ task:
 
 task:
   name: "ppc64le: Linux (Debian stable, QEMU)"
-  container:
-    dockerfile: ci/linux-debian.Dockerfile
-    cpu: 1
-    memory: 1G
+  << : *LINUX_CONTAINER
   env:
     WRAPPER_CMD: qemu-ppc64le
     SECP256K1_TEST_ITERS: 16
     HOST: powerpc64le-linux-gnu
     WITH_VALGRIND: no
     ECDH: yes
     RECOVERY: yes
-    EXPERIMENTAL: yes
     SCHNORRSIG: yes
     CTIMETEST: no
   << : *MERGE_BASE
@@ -254,18 +242,14 @@ task:
 
 task:
   name: "x86_64 (mingw32-w64): Windows (Debian stable, Wine)"
-  container:
-    dockerfile: ci/linux-debian.Dockerfile
-    cpu: 1
-    memory: 1G
+  << : *LINUX_CONTAINER
   env:
     WRAPPER_CMD: wine64-stable
     SECP256K1_TEST_ITERS: 16
     HOST: x86_64-w64-mingw32
     WITH_VALGRIND: no
     ECDH: yes
     RECOVERY: yes
-    EXPERIMENTAL: yes
     SCHNORRSIG: yes
     CTIMETEST: no
   << : *MERGE_BASE
@@ -275,23 +259,23 @@ task:
 
 # Sanitizers
 task:
-  container:
-    dockerfile: ci/linux-debian.Dockerfile
-    cpu: 1
-    memory: 2G
+  << : *LINUX_CONTAINER
   env:
     ECDH: yes
     RECOVERY: yes
-    EXPERIMENTAL: yes
     SCHNORRSIG: yes
     CTIMETEST: no
   matrix:
     - name: "Valgrind (memcheck)"
+      container:
+        cpu: 2
       env:
         # The `--error-exitcode` is required to make the test fail if valgrind found errors, otherwise it'll return 0 (https://www.valgrind.org/docs/manual/manual-core.html)
         WRAPPER_CMD: "valgrind --error-exitcode=42"
         SECP256K1_TEST_ITERS: 2
     - name: "UBSan, ASan, LSan"
+      container:
+        memory: 2G
       env:
         CFLAGS: "-fsanitize=undefined,address -g"
         UBSAN_OPTIONS: "print_stacktrace=1:halt_on_error=1"
@@ -302,11 +286,10 @@ task:
   matrix:
     - env:
         ASM: auto
-        STATICPRECOMPUTATION: yes
     - env:
         ASM: no
-        STATICPRECOMPUTATION: no
         ECMULTGENPRECISION: 2
+        ECMULTWINDOW: 2
   matrix:
     - env:
         CC: clang
@@ -320,21 +303,24 @@ task:
 
 task:
   name: "C++ -fpermissive"
-  container:
-    dockerfile: ci/linux-debian.Dockerfile
-    cpu: 1
-    memory: 1G
+  << : *LINUX_CONTAINER
   env:
     # ./configure correctly errors out when given CC=g++.
     # We hack around this by passing CC=g++ only to make.
     CC: gcc
-    MAKEFLAGS: -j2 CC=g++ CFLAGS=-fpermissive\ -g
+    MAKEFLAGS: -j4 CC=g++ CFLAGS=-fpermissive\ -g
     WERROR_CFLAGS:
-    EXPERIMENTAL: yes
     ECDH: yes
     RECOVERY: yes
     SCHNORRSIG: yes
   << : *MERGE_BASE
   test_script:
     - ./ci/cirrus.sh
   << : *CAT_LOGS
+
+task:
+  name: "sage prover"
+  << : *LINUX_CONTAINER
+  test_script:
+    - cd sage
+    - sage prove_group_implementations.sage
@@ -1,2 +1,2 @@
-src/ecmult_static_pre_g.h linguist-generated
-src/ecmult_gen_static_prec_table.h linguist-generated
+src/precomputed_ecmult.c linguist-generated
+src/precomputed_ecmult_gen.c linguist-generated
@@ -3,14 +3,19 @@ bench_ecmult
 bench_internal
 tests
 exhaustive_tests
-gen_ecmult_gen_static_prec_table
-gen_ecmult_static_pre_g
+precompute_ecmult_gen
+precompute_ecmult
 valgrind_ctime_test
+ecdh_example
+ecdsa_example
+schnorr_example
 *.exe
 *.so
 *.a
 *.csv
 !.gitignore
+*.log
+*.trs
 
 Makefile
 configure
@@ -41,6 +46,7 @@ coverage.*.html
 
 src/libsecp256k1-config.h
 src/libsecp256k1-config.h.in
+build-aux/ar-lib
 build-aux/config.guess
 build-aux/config.sub
 build-aux/depcomp