diff --git a/src/include/OpenImageIO/platform.h b/src/include/OpenImageIO/platform.h

index 7ed0548..39f2380 100644

--- a/src/include/OpenImageIO/platform.h

+++ b/src/include/OpenImageIO/platform.h

@@ -53,6 +53,8 @@

 #ifdef _MSC_VER

 #    include <intrin.h>

+#elif defined(__e2k__) && defined(__LCC__)

+#    include <e2kbuiltin.h>

 #endif

 #include <OpenImageIO/oiioversion.h>

@@ -389,6 +391,9 @@

 // 'inline'.

 #if defined(__CUDACC__)

 #    define OIIO_FORCEINLINE __inline__

+#elif defined(__EDG__)

+#    pragma diag_suppress 2189

+#    define OIIO_FORCEINLINE inline __attribute__((always_inline))

 #elif defined(__GNUC__) || defined(__clang__) || __has_attribute(always_inline)

 #    define OIIO_FORCEINLINE inline __attribute__((always_inline))

 #elif defined(_MSC_VER) || defined(__INTEL_COMPILER)

@@ -582,6 +587,8 @@ inline void cpuid (int info[4], int infoType, int extra)

         : "=a" (info[0]), "=r" (info[1]), "=c" (info[2]), "=d" (info[3])

         : "0" (infoType), "2" (extra));

 # endif

+#elif defined(__e2k__) && defined(__LCC__)

+    __cpuidex(info, infoType, extra);

 #else

     info[0] = 0; info[1] = 0; info[2] = 0; info[3] = 0;

 #endif

diff --git a/src/include/OpenImageIO/simd.h b/src/include/OpenImageIO/simd.h

index fdada23..83832e8 100644

--- a/src/include/OpenImageIO/simd.h

+++ b/src/include/OpenImageIO/simd.h

@@ -71,7 +71,8 @@

     // Cuda -- don't include any of these headers

 #elif defined(_WIN32)

 #  include <intrin.h>

-#elif defined(__GNUC__) && (defined(__x86_64__) || defined(__i386__)) || defined(__e2k__)

+// e2k backend for Clang doesn't support x86 intrinsics and SIMD

+#elif defined(__GNUC__) && (defined(__x86_64__) || defined(__i386__) || (defined(__e2k__) && defined(__LCC__)))

 #  include <x86intrin.h>

 #elif defined(__GNUC__) && defined(__ARM_NEON__)

 #  include <arm_neon.h>