[CI] Add --succinct to lit args

We currently log every single test that we run in premerge. This leads
to gigantic logs (200k+ lines on Linux) that can be difficult to parse
through. We should only indicate progress rather than explicitly logging
any test that we run.

For the rare cases where someone does need to see the list of tests that
run, the JUnit XML emitted by lit is available in the artifacts.

Author: boomanaiden154

.ci/monolithic-linux.sh

@@ -64,7 +64,7 @@ runtime_targets="${4}"
 runtime_targets_needs_reconfig="${5}"
 enable_cir="${6}"
 
-lit_args="-v --xunit-xml-output ${BUILD_DIR}/test-results.xml --use-unique-output-file-name --timeout=1200 --time-tests"
+lit_args="-v --xunit-xml-output ${BUILD_DIR}/test-results.xml --use-unique-output-file-name --timeout=1200 --time-tests --succinct"
 
 start-group "CMake"
 export PIP_BREAK_SYSTEM_PACKAGES=1

.ci/monolithic-windows.sh

@@ -76,7 +76,7 @@ cmake -S "${MONOREPO_ROOT}"/llvm -B "${BUILD_DIR}" \
       -D LLVM_ENABLE_ASSERTIONS=ON \
       -D LLVM_BUILD_EXAMPLES=ON \
       -D COMPILER_RT_BUILD_LIBFUZZER=OFF \
-      -D LLVM_LIT_ARGS="-v --xunit-xml-output ${BUILD_DIR}/test-results.xml --use-unique-output-file-name --timeout=1200 --time-tests" \
+      -D LLVM_LIT_ARGS="-v --xunit-xml-output ${BUILD_DIR}/test-results.xml --use-unique-output-file-name --timeout=1200 --time-tests --succinct" \
       -D COMPILER_RT_BUILD_ORC=OFF \
       -D CMAKE_C_COMPILER_LAUNCHER=sccache \
       -D CMAKE_CXX_COMPILER_LAUNCHER=sccache \