Minor changes so we can examine the assembly

2019/05/03/Dockerfile

@@ -8,6 +8,7 @@
 FROM gcc:9.1
 COPY . /usr/src/myapp
 WORKDIR /usr/src/myapp
+RUN make clean
 RUN make
 CMD ["./bitmapdecoding", "test"]
 

2019/05/03/Makefile

@@ -10,6 +10,7 @@ endif
 
 bitmapdecoding: bitmapdecoding.cpp
 	$(CXX) --version
+	$(CXX) -O2 $(arch) -S -fverbose-asm -std=c++14 -o bitmapdecoding.s bitmapdecoding.cpp 
 	$(CXX) -O2 $(arch) -std=c++14 -o bitmapdecoding bitmapdecoding.cpp -Wall -I.
 sanibitmapdecoding : bitmapdecoding.cpp
 	$(CXX) -g3 $(arch) -fsanitize=address -fno-omit-frame-pointer   -std=c++14 -o sanibitmapdecoding bitmapdecoding.cpp -Wall -I.

2019/05/03/bitmapdecoding.cpp

@@ -81,7 +81,7 @@ uint64_t *build_bitmap(const char *filename, char target, size_t *wordcount) {
   return data;
 }
 
-static inline void basic_decoder(uint32_t *base_ptr, uint32_t &base,
+void basic_decoder(uint32_t *base_ptr, uint32_t &base,
                                  uint32_t idx, uint64_t bits) {
   while (bits != 0) {
     base_ptr[base] = static_cast<uint32_t>(idx) + trailingzeroes(bits);

2019/05/03/dockerscript.sh

@@ -1,2 +1,3 @@
-make clean && docker build -t my-gcc-app . && docker run --privileged my-gcc-app
+make clean && docker build -t my-gcc-app . && docker run --privileged my-gcc-app && docker run -t my-gcc-app cat /usr/src/myapp/bitmapdecoding.s > bitmapdecoding.s
+