[lsan] Run the tests for each supported arch and suffix each one to distinguish them.

[dsanders]

Summary

Previously, the tests only ran for the 64-bit equivalent of the default target
(see -m64).
Given the supported architecture list only contains 64-bit targets, this happens
to work out the same as the supported targets in most cases but may matter for
X86_64/X86_64h on Darwin.

For other targets, the practical effect is that the test names contain the
architecture. This resolves some confusion when lsan tests fail since their
name no longer implies that they are trying to test the default target.

[dsanders]

Hi,

These four patches (see D16850, D16855, and D16856) don't fix any failures in the 3.8 release that I know of so there's no rush for them. They just make it easier for me to distinguish true regressions (failures for the 'mips' architecture) from new tests (failures for the 'mips64' architecture).

[samsonov]

LGTM. Thank you for taking care of this!

test/lsan/CMakeLists.txt

 set(LSAN_LIT_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
 
+set(LSAN_TESTSUITES)
+ 
+set(LSAN_TEST_ARCH ${LSAN_SUPPORTED_ARCH})
+if(APPLE)
+  darwin_filter_host_archs(LSAN_SUPPORTED_ARCH LSAN_TEST_ARCH)
+endif()
+
+foreach(arch ${LSAN_TEST_ARCH})
+  string(TOLOWER "-${arch}" LSAN_TEST_CONFIG_SUFFIX)
+  if(ANDROID OR ${arch} MATCHES "arm|aarch64")
+    # This is only true if we are cross-compiling.
+    # Build all tests with host compiler and use host tools.
+    set(LSAN_TEST_TARGET_CC ${COMPILER_RT_TEST_COMPILER})
+    set(LSAN_TEST_TARGET_CFLAGS ${COMPILER_RT_TEST_COMPILER_CFLAGS})
+  else()
+    get_target_flags_for_arch(${arch} LSAN_TEST_TARGET_CFLAGS)
+    string(REPLACE ";" " " LSAN_TEST_TARGET_CFLAGS "${LSAN_TEST_TARGET_CFLAGS}")
+  endif()
+
+  string(TOUPPER ${arch} ARCH_UPPER_CASE)
   set(LSAN_LIT_TEST_MODE "Standalone")
+  set(CONFIG_NAME ${ARCH_UPPER_CASE}LsanConfig)
+
   configure_lit_site_cfg(
     ${CMAKE_CURRENT_SOURCE_DIR}/lit.site.cfg.in
-  ${CMAKE_CURRENT_BINARY_DIR}/LsanConfig/lit.site.cfg)
+    ${CMAKE_CURRENT_BINARY_DIR}/${CONFIG_NAME}/lit.site.cfg)
+  list(APPEND LSAN_TESTSUITES ${CMAKE_CURRENT_BINARY_DIR}/${CONFIG_NAME})
 
+  set(CONFIG_NAME ${ARCH_UPPER_CASE}AsanConfig)
   set(LSAN_LIT_TEST_MODE "AddressSanitizer")
+
   configure_lit_site_cfg(
     ${CMAKE_CURRENT_SOURCE_DIR}/lit.site.cfg.in
-  ${CMAKE_CURRENT_BINARY_DIR}/AsanConfig/lit.site.cfg)
+    ${CMAKE_CURRENT_BINARY_DIR}/${CONFIG_NAME}/lit.site.cfg)
+  list(APPEND LSAN_TESTSUITES ${CMAKE_CURRENT_BINARY_DIR}/${CONFIG_NAME})
+endforeach()
 
 set(LSAN_TEST_DEPS ${SANITIZER_COMMON_LIT_TEST_DEPS})
 if(NOT COMPILER_RT_STANDALONE_BUILD)
   list(APPEND LSAN_TEST_DEPS lsan asan)
 endif()
 add_lit_testsuite(check-lsan "Running the LeakSanitizer tests"
-  ${CMAKE_CURRENT_BINARY_DIR}/LsanConfig
-  ${CMAKE_CURRENT_BINARY_DIR}/AsanConfig
+  ${LSAN_TESTSUITES}
   DEPENDS ${LSAN_TEST_DEPS})
 set_target_properties(check-lsan PROPERTIES FOLDER "LSan tests")

test/lsan/lit.common.cfg

if lsan_lit_test_mode == "Standalone":
   config.name = "LeakSanitizer-Standalone"
   lsan_cflags = ["-fsanitize=leak"]
 elif lsan_lit_test_mode == "AddressSanitizer":
   config.name = "LeakSanitizer-AddressSanitizer"
   lsan_cflags = ["-fsanitize=address"]
   config.available_features.add('asan')
 else:
   lit_config.fatal("Unknown LSan test mode: %r" % lsan_lit_test_mode)
+config.name += config.name_suffix
 
-clang_cflags = ["-O0", "-m64"] + config.debug_info_flags
+clang_cflags = ["-O0", config.target_cflags] + config.debug_info_flags
 clang_cxxflags = config.cxx_mode_flags + clang_cflags
 clang_lsan_cflags = clang_cflags + lsan_cflags
 clang_lsan_cxxflags = clang_cxxflags + lsan_cflags
 
 config.clang_cflags = clang_cflags
 config.clang_cxxflags = clang_cxxflags
 
 def build_invocation(compile_flags):

test/lsan/lit.site.cfg.in

+## Autogenerated by LLVM/Clang configuration.
+# Do not edit!
+
 # Load common config for all compiler-rt lit tests.
 lit_config.load_config(config, "@COMPILER_RT_BINARY_DIR@/test/lit.common.configured")
 
 # Tool-specific config options.
+config.name_suffix = "@LSAN_TEST_CONFIG_SUFFIX@"
+config.target_cflags = "@LSAN_TEST_TARGET_CFLAGS@"
 config.lsan_lit_test_mode = "@LSAN_LIT_TEST_MODE@"
 
 # Load tool-specific config that would do the real work.
 lit_config.load_config(config, "@LSAN_LIT_SOURCE_DIR@/lit.common.cfg")