Clean up TargetIntrinsicInfo API. Add pure virtual methods.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84192 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/TargetIntrinsicInfo.cpp b/lib/Target/TargetIntrinsicInfo.cpp
index d8da08e..e049a1d 100644
--- a/lib/Target/TargetIntrinsicInfo.cpp
+++ b/lib/Target/TargetIntrinsicInfo.cpp
@@ -12,11 +12,19 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Target/TargetIntrinsicInfo.h"
+#include "llvm/Function.h"
+#include "llvm/ADT/StringMap.h"
 using namespace llvm;
 
-TargetIntrinsicInfo::TargetIntrinsicInfo(const char **desc, unsigned count)
-  : Intrinsics(desc), NumIntrinsics(count) {
+TargetIntrinsicInfo::TargetIntrinsicInfo() {
 }
 
 TargetIntrinsicInfo::~TargetIntrinsicInfo() {
 }
+
+unsigned TargetIntrinsicInfo::getIntrinsicID(Function *F) const {
+  const ValueName *ValName = F->getValueName();
+  if (!ValName)
+    return 0;
+  return lookupName(ValName->getKeyData(), ValName->getKeyLength());
+}