[libc] Fix math tests for macos arm64. (#100060)

Some problem with current build on macos:
- no libatomic.
- death tests do not work yet.

Author: lntue

libc/src/stdlib/CMakeLists.txt

@@ -331,7 +331,12 @@ if(NOT LIBC_TARGET_OS_IS_GPU)
     include(${LIBC_SOURCE_DIR}/../compiler-rt/cmake/Modules/AllSupportedArchDefs.cmake)
 
     # scudo distinguishes riscv32 and riscv64, so we need to translate the architecture
-    set(LIBC_TARGET_ARCHITECTURE_FOR_SCUDO ${LIBC_TARGET_ARCHITECTURE})
+    # set(LIBC_TARGET_ARCHITECTURE_FOR_SCUDO ${LIBC_TARGET_ARCHITECTURE})
+    if (LIBC_TARGET_OS_IS_DARWIN AND (LIBC_TARGET_ARCHITECTURE STREQUAL "arm"))
+      set(LIBC_TARGET_ARCHITECTURE_FOR_SCUDO arm64)
+    else()
+      set(LIBC_TARGET_ARCHITECTURE_FOR_SCUDO ${LIBC_TARGET_ARCHITECTURE})
+    endif()
     if(LIBC_TARGET_ARCHITECTURE_IS_RISCV64)
       set(LIBC_TARGET_ARCHITECTURE_FOR_SCUDO riscv64)
     elseif(LIBC_TARGET_ARCHITECTURE_IS_RISCV32)

libc/test/src/CMakeLists.txt

@@ -24,7 +24,11 @@ function(add_fp_unittest name)
       message(FATAL_ERROR "Hermetic math test cannot require MPFR.")
     endif()
     set(test_type UNIT_TEST_ONLY)
-    list(APPEND MATH_UNITTEST_LINK_LIBRARIES libcMPFRWrapper -lmpfr -lgmp -latomic)
+    list(APPEND MATH_UNITTEST_LINK_LIBRARIES libcMPFRWrapper -lmpfr -lgmp)
+    if(NOT(LIBC_TARGET_OS_IS_DARWIN))
+      # macOS does not have libatomic.
+      list(APPEND MATH_UNITTEST_LINK_LIBRARIES -latomic)
+    endif()
   endif()
   list(APPEND MATH_UNITTEST_LINK_LIBRARIES LibcFPTestHelpers)
 

libc/test/src/math/smoke/nan_test.cpp

@@ -43,7 +43,7 @@ TEST_F(LlvmLibcNanTest, RandomString) {
   run_test("123 ", 0x7ff8000000000000);
 }
 
-#ifndef LIBC_HAVE_ADDRESS_SANITIZER
+#if defined(LIBC_HAVE_ADDRESS_SANITIZER) && defined(LIBC_TARGET_OS_IS_LINUX)
 TEST_F(LlvmLibcNanTest, InvalidInput) {
   EXPECT_DEATH([] { LIBC_NAMESPACE::nan(nullptr); }, WITH_SIGNAL(SIGSEGV));
 }

libc/test/src/math/smoke/nanf128_test.cpp

@@ -53,7 +53,7 @@ TEST_F(LlvmLibcNanf128Test, RandomString) {
            QUIET_NAN);
 }
 
-#ifndef LIBC_HAVE_ADDRESS_SANITIZER
+#if defined(LIBC_HAVE_ADDRESS_SANITIZER) && defined(LIBC_TARGET_OS_IS_LINUX)
 #include <signal.h>
 TEST_F(LlvmLibcNanf128Test, InvalidInput) {
   EXPECT_DEATH([] { LIBC_NAMESPACE::nanf128(nullptr); }, WITH_SIGNAL(SIGSEGV));

libc/test/src/math/smoke/nanf16_test.cpp

@@ -44,7 +44,7 @@ TEST_F(LlvmLibcNanf16Test, RandomString) {
   run_test("123 ", 0x7e00);
 }
 
-#ifndef LIBC_HAVE_ADDRESS_SANITIZER
+#if defined(LIBC_HAVE_ADDRESS_SANITIZER) && defined(LIBC_TARGET_OS_IS_LINUX)
 TEST_F(LlvmLibcNanf16Test, InvalidInput) {
   EXPECT_DEATH([] { LIBC_NAMESPACE::nanf16(nullptr); }, WITH_SIGNAL(SIGSEGV));
 }

libc/test/src/math/smoke/nanf_test.cpp

@@ -42,7 +42,7 @@ TEST_F(LlvmLibcNanfTest, RandomString) {
   run_test("123 ", 0x7fc00000);
 }
 
-#ifndef LIBC_HAVE_ADDRESS_SANITIZER
+#if defined(LIBC_HAVE_ADDRESS_SANITIZER) && defined(LIBC_TARGET_OS_IS_LINUX)
 TEST_F(LlvmLibcNanfTest, InvalidInput) {
   EXPECT_DEATH([] { LIBC_NAMESPACE::nanf(nullptr); }, WITH_SIGNAL(SIGSEGV));
 }

libc/test/src/math/smoke/nanl_test.cpp

@@ -70,7 +70,7 @@ TEST_F(LlvmLibcNanlTest, RandomString) {
   run_test("123 ", expected);
 }
 
-#ifndef LIBC_HAVE_ADDRESS_SANITIZER
+#if defined(LIBC_HAVE_ADDRESS_SANITIZER) && defined(LIBC_TARGET_OS_IS_LINUX)
 TEST_F(LlvmLibcNanlTest, InvalidInput) {
   EXPECT_DEATH([] { LIBC_NAMESPACE::nanl(nullptr); }, WITH_SIGNAL(SIGSEGV));
 }