Add CMS_UNROLL_LOOP defines for Intel compilers and use with pragme o…

…mp simd instructions that cause internal icc error
gartung · May 13, 2022 · 8326129 · 8326129
1 parent 056f7ef
commit 8326129
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Showing 2 changed files with 12 additions and 0 deletions.
diff --git a/FWCore/Utilities/interface/CMSUnrollLoop.h b/FWCore/Utilities/interface/CMSUnrollLoop.h
@@ -28,6 +28,12 @@
 #define CMS_UNROLL_LOOP_COUNT(N) _Pragma(EDM_STRINGIZE(clang loop unroll_count(N)))
 #define CMS_UNROLL_LOOP_DISABLE _Pragma(EDM_STRINGIZE(clang loop unroll(disable)))
 
+#elif defined(__INTEL_COMPILER)
+// Intel icc compiler 
+#define CMS_UNROLL_LOOP _Pragma(STRINGIFY(unroll))
+#define CMS_UNROLL_LOOP_COUNT(N) _Pragma(STRINGIFY(unroll(N)))
+#define CMS_UNROLL_LOOP_DISABLE _Pragma(STRINGIFY(nounroll))
+
 #elif defined(__GNUC__)
 // GCC host compiler
 

diff --git a/RecoTracker/MkFitCore/src/PropagationMPlex.cc b/RecoTracker/MkFitCore/src/PropagationMPlex.cc
@@ -822,16 +822,22 @@ namespace mkfit {
     float cosahTmp[NN];
     float sinahTmp[NN];
     if constexpr (Config::useTrigApprox) {
+#ifndef __INTEL_COMPILER 
 #pragma omp simd
+#endif
       for (int n = 0; n < NN; ++n) {
         sincos4(alpha[n] * 0.5f, sinahTmp[n], cosahTmp[n]);
       }
     } else {
+#ifndef __INTEL_COMPILER 
 #pragma omp simd
+#endif
       for (int n = 0; n < NN; ++n) {
         cosahTmp[n] = std::cos(alpha[n] * 0.5f);
       }
+#ifndef __INTEL_COMPILER 
 #pragma omp simd
+#endif
       for (int n = 0; n < NN; ++n) {
         sinahTmp[n] = std::sin(alpha[n] * 0.5f);
       }