[compiler-rt] Fix minimal stack reserved for unittest on MSVC build

Summary:
Some unittest were not able to run in 64-bit because they need more than
2MB of stack and the default allocated stack with MSVC linker is 1MB.

Reviewers: rnk

Subscribers: wang0109, chrisha, llvm-commits, kubabrecka

Differential Revision: http://reviews.llvm.org/D22101

llvm-svn: 274785

compiler-rt/lib/sanitizer_common/tests/CMakeLists.txt

@@ -78,6 +78,13 @@ if(ANDROID)
   list(APPEND SANITIZER_TEST_LINK_FLAGS_COMMON -pie)
 endif()
 
+# MSVC linker is allocating 1M for the stack by default, which is not
+# enough for the unittests. Some unittests require more than 2M.
+# The default stack size for clang is 8M.
+if(MSVC)
+  list(APPEND SANITIZER_TEST_LINK_FLAGS_COMMON -Wl,/STACK:0x8000000)
+endif()
+
 set(SANITIZER_TEST_LINK_LIBS)
 append_list_if(COMPILER_RT_HAS_LIBLOG log SANITIZER_TEST_LINK_LIBS)
 # NDK r10 requires -latomic almost always.

compiler-rt/lib/sanitizer_common/tests/sanitizer_test_main.cc

@@ -13,10 +13,6 @@
 #include "gtest/gtest.h"
 #include "sanitizer_common/sanitizer_flags.h"
 
-#ifdef _MSC_VER
-#pragma comment(linker, "/STACK:33554432")
-#endif
-
 const char *argv0;
 
 int main(int argc, char **argv) {