CI: misc cleanups + faster analysis (#449)

* switch to git ls-files to avoid picking up any other local .c files
* enable assertions during static analysis since we used some assertions to
  disable/silence certain warnings.
* update TCC commit hash to a more recent one
* parallelize static analysis

cppcheck already has -j argument to parallelize it's analysis and
provide results faster, clang-tidy unfortunately doesn't.

so use xargs -P to archive parallel execution. on my system this brings
down the analysis time from ~27s to ~5s.

4 files changed, 13 insertions, 10 deletions

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 4619bb7..3c3b3c1 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -16,7 +16,7 @@ jobs:
         sudo apt-get install libimlib2 libimlib2-dev xserver-xorg-core xserver-xorg-dev \
                              libxft2 libxft-dev libexif12 libexif-dev \
                              gcc clang git bc
-        TCC_SHA="027b8fb9b88fe137447fb8bb1b61079be9702472"
+        TCC_SHA="29ae3ed4d5b83eec43598d6cd7949bccb41c8083"
         wget "https://github.com/TinyCC/tinycc/archive/${TCC_SHA}.tar.gz" && tar xzf "${TCC_SHA}.tar.gz"
         ( cd "tinycc-$TCC_SHA" && ./configure && make -j"$(nproc)" && sudo make install; )
     - name: build
diff --git a/etc/woodpecker/analysis.sh b/etc/woodpecker/analysis.sh
index 330d140..5a227ce 100755
--- a/etc/woodpecker/analysis.sh
+++ b/etc/woodpecker/analysis.sh
@@ -1,21 +1,24 @@
 #!/bin/sh -e
 
 std="c99"
+NProc=$(( $(nproc) / 4 ))
+if [ -z "$NProc" ] || [ "$NProc" -lt 1 ]; then NProc="1"; fi
 
 run_cppcheck() {
     cppcheck --std="$std" --enable=performance,portability \
         --force --quiet --inline-suppr --error-exitcode=1 \
-        --max-ctu-depth=8 -j"$(nproc)" \
-        $(make OPT_DEP_DEFAULT="$1" dump_cppflags) \
+        --max-ctu-depth=8 -j"$NProc" \
+        $(make OPT_DEP_DEFAULT="$1" dump_cppflags) -DDEBUG \
         --suppress=varFuncNullUB --suppress=uninitvar \
-        *.c
+        $(git ls-files *.c)
 }
 
 run_tidy() {
     checks="$(sed '/^#/d' etc/woodpecker/clang-tidy-checks | paste -d ',' -s)"
-    clang-tidy --warnings-as-errors="*" --checks="$checks" --quiet *.c \
-        -- -std="$std" $(make OPT_DEP_DEFAULT="$1" dump_cppflags)
+    git ls-files *.c | xargs -P"$NProc" -I{} clang-tidy --quiet \
+        --warnings-as-errors="*" --checks="$checks" {} \
+        -- -std="$std" $(make OPT_DEP_DEFAULT="$1" dump_cppflags) -DDEBUG
 }
 
-run_cppcheck "0"; run_cppcheck "1";
-run_tidy "0"; run_tidy "1";
+run_cppcheck "0" & run_cppcheck "1" & run_tidy "0" & run_tidy "1";
+wait
diff --git a/etc/woodpecker/analysis.yml b/etc/woodpecker/analysis.yml
index 65da7aa..9ebcc4f 100644
--- a/etc/woodpecker/analysis.yml
+++ b/etc/woodpecker/analysis.yml
@@ -4,7 +4,7 @@ pipeline:
   analysis:
     image: alpine
     commands: |
-      apk add --no-cache build-base cppcheck clang-extra-tools \
+      apk add --no-cache build-base cppcheck clang-extra-tools git \
           imlib2-dev xorgproto \
           libxft-dev libexif-dev giflib-dev libwebp-dev >/dev/null
       make config.h version.h
diff --git a/etc/woodpecker/build.yml b/etc/woodpecker/build.yml
index eced0d1..7c79a90 100644
--- a/etc/woodpecker/build.yml
+++ b/etc/woodpecker/build.yml
@@ -5,7 +5,7 @@ pipeline:
   build:
     image: alpine
     environment:
-      - TCC_SHA=027b8fb9b88fe137447fb8bb1b61079be9702472
+      - TCC_SHA=29ae3ed4d5b83eec43598d6cd7949bccb41c8083
     commands: |
       apk add --no-cache \
           imlib2 imlib2-dev xorgproto \