i#5365: Build core unit tests with SVE enabled

CMakeLists.txt

@@ -1612,6 +1612,10 @@ if (BUILD_TESTS)
   include(CTest)
 endif (BUILD_TESTS)
 
+if (AARCH64)
+  option(BUILD_TESTS_SVE "Build tests with SVE enabled and high optimization (-O3)" OFF)
+endif (AARCH64)
+
 if (BUILD_CORE)
   add_subdirectory(core)
 endif (BUILD_CORE)

suite/tests/CMakeLists.txt

@@ -553,6 +553,24 @@ function(add_exe test source)
       "${CMAKE_GENERATOR}" MATCHES "Visual Studio")
     add_dependencies(${test} ${gen_asm_tgt})
   endif ()
+  if (BUILD_TESTS_SVE)
+    target_compile_options(${test} PRIVATE
+      "-march=armv8.4-a+crypto+rcpc+sha3+sm4+sve+rng+ssbs+nodotprod")
+
+    # Some tests give very obscure build errors when built with "-O3"
+    # FIXME i#5365: fix build issues due to optimisation, unless no
+    # optimisation is a requirement for a test case.
+    if (
+      NOT ${test} STREQUAL "api.rseq" AND
+      NOT ${test} STREQUAL "linux.rseq" AND
+      NOT ${test} STREQUAL "linux.rseq_table" AND
+      NOT ${test} STREQUAL "linux.rseq_noarray" AND
+      NOT ${test} STREQUAL "linux.clone" AND
+      NOT ${test} STREQUAL "linux.clone-pie"
+    )
+      target_compile_options(${test} PRIVATE "-O3")
+    endif()
+  endif(BUILD_TESTS_SVE)
 endfunction(add_exe)
 
 # normal app

suite/tests/client-interface/drx-test.c

@@ -241,7 +241,9 @@ main(int argc, char **argv)
         /* child */
         int iter = 0;
         close(pipefd[0]); /* close unused read end */
-        write(pipefd[1], &buf, sizeof(buf));
+        if (write(pipefd[1], &buf, sizeof(buf)) == -1) {
+            perror("write to pipe failed\n");
+        }
         close(pipefd[1]);
         /* spin until parent kills us or we time out */
         while (iter++ < 12) {

suite/tests/linux/eintr.c

@@ -127,7 +127,8 @@ main(int argc, char **argv)
     child_ready = false;
     pthread_mutex_unlock(&lock);
 
-    write(pipefd[1], "ab", 2);
+    if (write(pipefd[1], "ab", 2) == -1)
+        perror("Failed to write to pipe\n");
 
     if (pthread_join(thread, &retval) != 0)
         perror("failed to join thread");

suite/tests/linux/tool.drcov.eintr.template

@@ -44,12 +44,13 @@ DA:126,1
 DA:127,1
 DA:128,1
 DA:130,1
-DA:132,1
-DA:133,0
-DA:135,1
+DA:131,0
+DA:133,1
+DA:134,0
 DA:136,1
-DA:138,1
+DA:137,1
 DA:139,1
-DA:141,1
+DA:140,1
 DA:142,1
+DA:143,1
 end_of_record