[OpenMP][libomp] Introduce oneAPI compiler support

Introduce KMP_COMPILER_ICX macro to represent compilation with oneAPI
compiler.

Fixup flag detection and compiler ID detection in CMake. Older CMake's
detect IntelLLVM as Clang.

Fix compiler warnings.

Fixup many of the tests to have non-empty parallel regions as they are
elided by oneAPI compiler.

1 files changed, 5 insertions, 5 deletions

diff --git a/openmp/runtime/src/kmp_stub.cpp b/openmp/runtime/src/kmp_stub.cpp
index 6aaec688013f..da7340fd1404 100644
--- a/openmp/runtime/src/kmp_stub.cpp
+++ b/openmp/runtime/src/kmp_stub.cpp
@@ -159,11 +159,11 @@ void *kmp_malloc(size_t size) {
 }
 void *kmp_aligned_malloc(size_t sz, size_t a) {
   i;
-  int err;
   void *res;
 #if KMP_OS_WINDOWS
   res = _aligned_malloc(sz, a);
 #else
+  int err;
   if ((err = posix_memalign(&res, a, sz))) {
     errno = err; // can be EINVAL or ENOMEM
     res = NULL;
@@ -393,12 +393,12 @@ void *omp_alloc(size_t size, omp_allocator_handle_t allocator) {
 
 void *omp_aligned_alloc(size_t a, size_t size, omp_allocator_handle_t al) {
   i;
-  int err;
   void *res;
 #if KMP_OS_WINDOWS
   res = _aligned_malloc(size, a);
 #else
-  if (err = posix_memalign(&res, a, size)) {
+  int err;
+  if ((err = posix_memalign(&res, a, size))) {
     errno = err; // can be EINVAL or ENOMEM
     res = NULL;
   }
@@ -420,12 +420,12 @@ void *omp_calloc(size_t nmemb, size_t size, omp_allocator_handle_t al) {
 void *omp_aligned_calloc(size_t a, size_t nmemb, size_t size,
                          omp_allocator_handle_t al) {
   i;
-  int err;
   void *res;
 #if KMP_OS_WINDOWS
   res = _aligned_recalloc(NULL, nmemb, size, a);
 #else
-  if (err = posix_memalign(&res, a, nmemb * size)) {
+  int err;
+  if ((err = posix_memalign(&res, a, nmemb * size))) {
     errno = err; // can be EINVAL or ENOMEM
     res = NULL;
   }