1 files changed, 19 insertions, 2 deletions
diff --git a/llvm/lib/MCA/Support.cpp b/llvm/lib/MCA/Support.cpp
index e11062f4d72..ce1f0f6f211 100644
--- a/llvm/lib/MCA/Support.cpp
+++ b/llvm/lib/MCA/Support.cpp
@@ -20,6 +20,22 @@ namespace mca {
 
 #define DEBUG_TYPE "llvm-mca"
 
+ResourceCycles &ResourceCycles::operator+=(const ResourceCycles &RHS) {
+  if (Denominator == RHS.Denominator)
+    Numerator += RHS.Numerator;
+  else {
+    // Create a common denominator for LHS and RHS by calculating the least
+    // common multiple from the GCD.
+    unsigned GCD = GreatestCommonDivisor64(Denominator, RHS.Denominator);
+    unsigned LCM = (Denominator * RHS.Denominator) / GCD;
+    unsigned LHSNumerator = Numerator * (LCM / Denominator);
+    unsigned RHSNumerator = RHS.Numerator * (LCM / RHS.Denominator);
+    Numerator = LHSNumerator + RHSNumerator;
+    Denominator = LCM;
+  }
+  return *this;
+}
+
 void computeProcResourceMasks(const MCSchedModel &SM,
                               MutableArrayRef<uint64_t> Masks) {
   unsigned ProcResourceID = 0;
@@ -56,8 +72,9 @@ void computeProcResourceMasks(const MCSchedModel &SM,
                     << "\n");
   for (unsigned I = 0, E = SM.getNumProcResourceKinds(); I < E; ++I) {
     const MCProcResourceDesc &Desc = *SM.getProcResource(I);
-    LLVM_DEBUG(dbgs() << '[' << I << "] " << Desc.Name << " - " << Masks[I]
-                      << '\n');
+    LLVM_DEBUG(dbgs() << '[' << format_decimal(I,2) << "] " << " - "
+                      << format_hex(Masks[I],16) << " - "
+                      << Desc.Name << '\n');
   }
 #endif
 }