diff --git a/.github/workflows/llvm.yml b/.github/workflows/llvm.yml
index 4670a42..63b2f97 100644
--- a/.github/workflows/llvm.yml
+++ b/.github/workflows/llvm.yml
@@ -28,7 +28,7 @@ jobs:
       - name: Clonning LLVM master branch && gollvm related repos.
         run:  cd $GITHUB_WORKSPACE/clang_test_cpu_features && git clone https://github.com/llvm/llvm-project.git && cd llvm-project/llvm/tools && git clone https://go.googlesource.com/gollvm &&  cd gollvm && git clone https://go.googlesource.com/gofrontend && cd libgo && git clone https://github.com/libffi/libffi.git && git clone https://github.com/ianlancetaylor/libbacktrace.git
       - name: Compiling & linking gollvm
-        run: cd $GITHUB_WORKSPACE/clang_test_cpu_features && mkdir build_release && cd build_release && cmake -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ -DCMAKE_BUILD_TYPE=Release -DLLVM_TARGETS_TO_BUILD=X86 -G Ninja ../llvm-project/llvm && ninja -j16 gollvm && ninja GoBackendCoreTests && ./tools/gollvm/unittests/BackendCore/GoBackendCoreTests && sudo ninja install-gollvm
+        run: cd $GITHUB_WORKSPACE/clang_test_cpu_features && mkdir build_relwdebinfo && cd build_relwdebinfo && cmake -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ -DCMAKE_BUILD_TYPE=RelWithDebInfo -DLLVM_TARGETS_TO_BUILD=X86 -G Ninja ../llvm-project/llvm && ninja -j16 gollvm && ninja GoBackendCoreTests && ./tools/gollvm/unittests/BackendCore/GoBackendCoreTests && sudo ninja install-gollvm
   gcc_compat_build: #in sense of CMake's identification - gollvm is indeed Clang oriented
     runs-on: ubuntu-latest
     steps:
@@ -50,7 +50,7 @@ jobs:
       - name: Clonning LLVM master branch && gollvm related repos.
         run:  cd $GITHUB_WORKSPACE/clang_test_cpu_features && git clone https://github.com/llvm/llvm-project.git && cd llvm-project/llvm/tools && git clone https://go.googlesource.com/gollvm &&  cd gollvm && git clone https://go.googlesource.com/gofrontend && cd libgo && git clone https://github.com/libffi/libffi.git && git clone https://github.com/ianlancetaylor/libbacktrace.git
       - name: Compiling & linking gollvm
-        run: cd $GITHUB_WORKSPACE/clang_test_cpu_features && mkdir build_release && cd build_release && cmake -DCMAKE_BUILD_TYPE=Release -DLLVM_TARGETS_TO_BUILD=X86 -G Ninja ../llvm-project/llvm && ninja -j16 gollvm && ninja GoBackendCoreTests && ./tools/gollvm/unittests/BackendCore/GoBackendCoreTests
+        run: cd $GITHUB_WORKSPACE/clang_test_cpu_features && mkdir build_relwdebinfo && cd build_relwdebinfo && cmake -DCMAKE_BUILD_TYPE=RelWithDebInfo -DLLVM_TARGETS_TO_BUILD=X86 -G Ninja ../llvm-project/llvm && ninja -j16 gollvm && ninja GoBackendCoreTests && ./tools/gollvm/unittests/BackendCore/GoBackendCoreTests
 
   clang10_build: #in sense of CMake's identification - gollvm is indeed Clang oriented
     runs-on: ubuntu-20.04
@@ -75,7 +75,7 @@ jobs:
       - name: Clonning LLVM master branch && gollvm related repos.
         run:  cd $GITHUB_WORKSPACE/clang_test_cpu_features && git clone https://github.com/llvm/llvm-project.git && cd llvm-project/llvm/tools && git clone https://go.googlesource.com/gollvm &&  cd gollvm && git clone https://go.googlesource.com/gofrontend && cd libgo && git clone https://github.com/libffi/libffi.git && git clone https://github.com/ianlancetaylor/libbacktrace.git
       - name: Compiling & linking gollvm
-        run: cd $GITHUB_WORKSPACE/clang_test_cpu_features && mkdir build_release && cd build_release && cmake -DCMAKE_BUILD_TYPE=Release -DLLVM_TARGETS_TO_BUILD=X86 -DCMAKE_C_COMPILER=clang-10 -DCMAKE_CXX_COMPILER=clang++-10 -G Ninja ../llvm-project/llvm && ninja -j16 gollvm && ninja GoBackendCoreTests && ./tools/gollvm/unittests/BackendCore/GoBackendCoreTests
+        run: cd $GITHUB_WORKSPACE/clang_test_cpu_features && mkdir build_relwdebinfo && cd build_relwdebinfo && cmake -DCMAKE_BUILD_TYPE=RelWithDebInfo -DLLVM_TARGETS_TO_BUILD=X86 -DCMAKE_C_COMPILER=clang-10 -DCMAKE_CXX_COMPILER=clang++-10 -G Ninja ../llvm-project/llvm && ninja -j16 gollvm && ninja GoBackendCoreTests && ./tools/gollvm/unittests/BackendCore/GoBackendCoreTests
   clang11_build: #in sense of CMake's identification - gollvm is indeed Clang oriented
     runs-on: ubuntu-20.04
     steps:
@@ -99,4 +99,4 @@ jobs:
       - name: Clonning LLVM master branch && gollvm related repos.
         run:  cd $GITHUB_WORKSPACE/clang_test_cpu_features && git clone https://github.com/llvm/llvm-project.git && cd llvm-project/llvm/tools && git clone https://go.googlesource.com/gollvm &&  cd gollvm && git clone https://go.googlesource.com/gofrontend && cd libgo && git clone https://github.com/libffi/libffi.git && git clone https://github.com/ianlancetaylor/libbacktrace.git
       - name: Compiling & linking gollvm
-        run: cd $GITHUB_WORKSPACE/clang_test_cpu_features && mkdir build_release && cd build_release && cmake -DCMAKE_BUILD_TYPE=Release -DLLVM_TARGETS_TO_BUILD=X86 -DCMAKE_C_COMPILER=clang-11 -DCMAKE_CXX_COMPILER=clang++-11 -G Ninja ../llvm-project/llvm && ninja -j16 gollvm && ninja GoBackendCoreTests && ./tools/gollvm/unittests/BackendCore/GoBackendCoreTests
+        run: cd $GITHUB_WORKSPACE/clang_test_cpu_features && mkdir build_relwdebinfo && cd build_relwdebinfo && cmake -DCMAKE_BUILD_TYPE=RelWithDebInfo -DLLVM_TARGETS_TO_BUILD=X86 -DCMAKE_C_COMPILER=clang-11 -DCMAKE_CXX_COMPILER=clang++-11 -G Ninja ../llvm-project/llvm && ninja -j16 gollvm && ninja GoBackendCoreTests && ./tools/gollvm/unittests/BackendCore/GoBackendCoreTests