Vendor import of compiler-rt release_39 branch r276489:vendor/compiler-rt/compiler-rt-release_39-r276489

https://llvm.org/svn/llvm-project/compiler-rt/branches/release_39@276489

9 files changed, 127 insertions, 19 deletions

diff --git a/test/lsan/CMakeLists.txt b/test/lsan/CMakeLists.txt
index 6cca00a90b6b..e3d363a1f275 100644
--- a/test/lsan/CMakeLists.txt
+++ b/test/lsan/CMakeLists.txt
@@ -1,21 +1,48 @@
 set(LSAN_LIT_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
 
-set(LSAN_LIT_TEST_MODE "Standalone")
-configure_lit_site_cfg(
-  ${CMAKE_CURRENT_SOURCE_DIR}/lit.site.cfg.in
-  ${CMAKE_CURRENT_BINARY_DIR}/LsanConfig/lit.site.cfg)
+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})
+  set(LSAN_TEST_TARGET_ARCH ${arch})
+  string(TOLOWER "-${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
+    ${CMAKE_CURRENT_BINARY_DIR}/${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")
 
-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)
+  configure_lit_site_cfg(
+    ${CMAKE_CURRENT_SOURCE_DIR}/lit.site.cfg.in
+    ${CMAKE_CURRENT_BINARY_DIR}/${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 ${LSAN_TEST_DEPS})
-set_target_properties(check-lsan PROPERTIES FOLDER "LSan tests")
+set_target_properties(check-lsan PROPERTIES FOLDER "Compiler-RT Misc")
diff --git a/test/lsan/TestCases/disabler_in_tsd_destructor.c b/test/lsan/TestCases/disabler_in_tsd_destructor.c
index 982fb899ec5b..4a3a7ac14c3b 100644
--- a/test/lsan/TestCases/disabler_in_tsd_destructor.c
+++ b/test/lsan/TestCases/disabler_in_tsd_destructor.c
@@ -1,5 +1,5 @@
 // Regression test. Disabler should not depend on TSD validity.
-// RUN: LSAN_BASE="report_objects=1:use_registers=0:use_stacks=0:use_globals=0:use_tls=1"
+// RUN: LSAN_BASE="report_objects=1:use_registers=0:use_stacks=0:use_globals=0:use_tls=1:use_ld_allocations=0"
 // RUN: %clang_lsan %s -o %t
 // RUN: LSAN_OPTIONS=$LSAN_BASE %run %t
 
diff --git a/test/lsan/TestCases/guard-page.c b/test/lsan/TestCases/guard-page.c
new file mode 100644
index 000000000000..5c70a9f08aca
--- /dev/null
+++ b/test/lsan/TestCases/guard-page.c
@@ -0,0 +1,60 @@
+// Check that if LSan finds that SP doesn't point into thread stack (e.g.
+// if swapcontext is used), LSan will not hit the guard page.
+// RUN: %clang_lsan %s -o %t && %run %t
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <pthread.h>
+#include <ucontext.h>
+
+pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
+pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
+int ctxfunc_started = 0;
+
+static void die(const char* msg, int err) {
+  if (err == 0)
+    err = errno;
+  fprintf(stderr, "%s: %s\n", msg, strerror(err));
+  exit(EXIT_FAILURE);
+}
+
+static void ctxfunc() {
+  pthread_mutex_lock(&mutex);
+  ctxfunc_started = 1;
+  pthread_cond_signal(&cond);
+  pthread_mutex_unlock(&mutex);
+  // Leave this context alive when the program exits.
+  for (;;);
+}
+
+static void* thread(void* arg) {
+  (void)arg;
+  ucontext_t ctx;
+  void* stack;
+
+  if (getcontext(&ctx) < 0)
+    die("getcontext", 0);
+  stack = malloc(1 << 10);
+  if (stack == NULL)
+    die("malloc", 0);
+  ctx.uc_stack.ss_sp = stack;
+  ctx.uc_stack.ss_size = 1 << 10;
+  makecontext(&ctx, ctxfunc, 0);
+  setcontext(&ctx);
+  die("setcontext", 0);
+  return NULL;
+}
+
+int main() {
+  pthread_t tid;
+  int i;
+
+  pthread_mutex_lock(&mutex);
+  i = pthread_create(&tid, NULL, thread, NULL);
+  if (i != 0)
+    die("pthread_create", i);
+  while (!ctxfunc_started) pthread_cond_wait(&cond, &mutex);
+  pthread_mutex_unlock(&mutex);
+  return 0;
+}
diff --git a/test/lsan/TestCases/high_allocator_contention.cc b/test/lsan/TestCases/high_allocator_contention.cc
index 2543897bcbb4..f423fd48c79c 100644
--- a/test/lsan/TestCases/high_allocator_contention.cc
+++ b/test/lsan/TestCases/high_allocator_contention.cc
@@ -1,7 +1,8 @@
 // A benchmark that executes malloc/free pairs in parallel.
 // Usage: ./a.out number_of_threads total_number_of_allocations
+// RUN: LSAN_BASE="use_ld_allocations=0"
 // RUN: %clangxx_lsan %s -o %t
-// RUN: %run %t 5 1000000 2>&1
+// RUN: LSAN_OPTIONS=$LSAN_BASE %run %t 5 1000000 2>&1
 #include <assert.h>
 #include <pthread.h>
 #include <stdlib.h>
diff --git a/test/lsan/TestCases/leak_check_before_thread_started.cc b/test/lsan/TestCases/leak_check_before_thread_started.cc
index 0bd4837f14c0..ca818e1e269c 100644
--- a/test/lsan/TestCases/leak_check_before_thread_started.cc
+++ b/test/lsan/TestCases/leak_check_before_thread_started.cc
@@ -4,12 +4,19 @@
 // RUN: LSAN_OPTIONS="log_pointers=1:log_threads=1" %run %t
 #include <assert.h>
 #include <pthread.h>
+#include <stdio.h>
 #include <stdlib.h>
-#include <unistd.h>
+
+pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
+pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
+bool flag = false;
 
 void *func(void *arg) {
-  sleep(1);
+  // This mutex will never be grabbed.
+  fprintf(stderr, "entered func()\n");
+  pthread_mutex_lock(&mutex);
   free(arg);
+  pthread_mutex_unlock(&mutex);
   return 0;
 }
 
@@ -22,6 +29,8 @@ void create_detached_thread() {
 
   void *arg = malloc(1337);
   assert(arg);
+  // This mutex is never unlocked by the main thread.
+  pthread_mutex_lock(&mutex);
   int res = pthread_create(&thread_id, &attr, func, arg);
   assert(res == 0);
 }
diff --git a/test/lsan/TestCases/use_registers.cc b/test/lsan/TestCases/use_registers.cc
index ce11c3f77bcb..74301a26c32c 100644
--- a/test/lsan/TestCases/use_registers.cc
+++ b/test/lsan/TestCases/use_registers.cc
@@ -27,6 +27,11 @@ void *registers_thread_func(void *arg) {
       :
       : "r" (p)
       );
+#elif defined(__mips__)
+  asm ( "move $16, %0"
+      :
+      : "r" (p)
+      );
 #else
 #error "Test is not supported on this architecture."
 #endif
diff --git a/test/lsan/TestCases/use_tls_dynamic.cc b/test/lsan/TestCases/use_tls_dynamic.cc
index 860db041ae40..207894b0fffd 100644
--- a/test/lsan/TestCases/use_tls_dynamic.cc
+++ b/test/lsan/TestCases/use_tls_dynamic.cc
@@ -1,5 +1,5 @@
 // Test that dynamically allocated TLS space is included in the root set.
-// RUN: LSAN_BASE="report_objects=1:use_stacks=0:use_registers=0"
+// RUN: LSAN_BASE="report_objects=1:use_stacks=0:use_registers=0:use_ld_allocations=0"
 // RUN: %clangxx %s -DBUILD_DSO -fPIC -shared -o %t-so.so
 // RUN: %clangxx_lsan %s -o %t
 // RUN: LSAN_OPTIONS=$LSAN_BASE:"use_tls=0" not %run %t 2>&1 | FileCheck %s
diff --git a/test/lsan/lit.common.cfg b/test/lsan/lit.common.cfg
index ba9c283ca84a..a04c113269f2 100644
--- a/test/lsan/lit.common.cfg
+++ b/test/lsan/lit.common.cfg
@@ -27,8 +27,9 @@ elif lsan_lit_test_mode == "AddressSanitizer":
   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
diff --git a/test/lsan/lit.site.cfg.in b/test/lsan/lit.site.cfg.in
index 7d2877bdc528..de893474d280 100644
--- a/test/lsan/lit.site.cfg.in
+++ b/test/lsan/lit.site.cfg.in
@@ -1,8 +1,13 @@
-# Load common config for all compiler-rt lit tests.
-lit_config.load_config(config, "@COMPILER_RT_BINARY_DIR@/test/lit.common.configured")
+@LIT_SITE_CFG_IN_HEADER@
 
 # 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@"
+config.target_arch = "@LSAN_TEST_TARGET_ARCH@"
+
+# Load common config for all compiler-rt lit tests.
+lit_config.load_config(config, "@COMPILER_RT_BINARY_DIR@/test/lit.common.configured")
 
 # Load tool-specific config that would do the real work.
 lit_config.load_config(config, "@LSAN_LIT_SOURCE_DIR@/lit.common.cfg")