1 files changed, 7 insertions, 0 deletions
diff --git a/llvm/utils/TableGen/CodeGenTarget.cpp b/llvm/utils/TableGen/CodeGenTarget.cpp
index 37fa303..cf0049e 100644
--- a/llvm/utils/TableGen/CodeGenTarget.cpp
+++ b/llvm/utils/TableGen/CodeGenTarget.cpp
@@ -538,6 +538,13 @@ void CodeGenTarget::ComputeInstrsByEnum() const {
         return std::make_tuple(!D1.getValueAsBit("isPseudo"), D1.getName()) <
                std::make_tuple(!D2.getValueAsBit("isPseudo"), D2.getName());
       });
+
+  // Build the instruction-to-int map using the same values emitted by
+  // InstrInfoEmitter::emitEnums.
+  assert(InstrToIntMap.empty());
+  unsigned Num = 0;
+  for (const CodeGenInstruction *Inst : InstrsByEnum)
+    InstrToIntMap[Inst->TheDef] = Num++;
 }