github: Set the test parameter large_tests=False for the libcxx tests

This skips test that use a lot of memory. In particular, there's
one test that would use up to 6.8 GB of memory, while the GitHub
Actions runners only have 8 GB of memory available.

This parameter was added in 122064a6303eb9c06e0af231f5a4ce145d9a2e67
in the llvm-project main branch, and backported to 17.x in
aa03fba83b17bbfcd9ed869efed2818b503875d6.

Author: mstorsjo

.github/workflows/build.yml

@@ -383,6 +383,7 @@ jobs:
             -DLIBUNWIND_USE_COMPILER_RT=YES `
             -DLIBCXXABI_USE_LLVM_UNWINDER=YES `
             -DLIBCXX_EXTRA_SITE_DEFINES="__USE_MINGW_ANSI_STDIO=1;TEST_IS_EXECUTED_IN_A_SLOW_ENVIRONMENT" `
+            -DLIBCXX_TEST_PARAMS="large_tests=False" `
             -DLLVM_LIT_ARGS="-v --time-tests"
           ninja
           ninja check-cxx check-cxxabi check-unwind

.github/workflows/test-libcxx.yml

@@ -95,6 +95,7 @@ jobs:
             -DLIBUNWIND_USE_COMPILER_RT=YES `
             -DLIBCXXABI_USE_LLVM_UNWINDER=YES `
             -DLIBCXX_EXTRA_SITE_DEFINES="__USE_MINGW_ANSI_STDIO=1;TEST_IS_EXECUTED_IN_A_SLOW_ENVIRONMENT" `
+            -DLIBCXX_TEST_PARAMS="large_tests=False" `
             -DLLVM_LIT_ARGS="-v --time-tests"
           ninja
           ninja check-cxx check-cxxabi check-unwind