[llvm] [MCA] Extend -instruction-tables option with verbosity levels (PR #130574)

[Craig Topper via llvm-commits]

================
@@ -12,15 +12,47 @@
 //===----------------------------------------------------------------------===//
 
 #include "Views/InstructionInfoView.h"
+#include "llvm/ADT/StringExtras.h"
 #include "llvm/Support/FormattedStream.h"
 #include "llvm/Support/JSON.h"
+#include "llvm/Support/WithColor.h"
 
 namespace llvm {
 namespace mca {
 
+void InstructionInfoView::getComment(const MCInst &MCI,
+                                     std::string &CommentString) const {
+  StringRef S = MCI.getLoc().getPointer();
+  StringRef InstrStr;
+  size_t Pos = 0, PosCmt = 0;
+
+  // Recognized comments are after assembly instructions on the same line.
+  // It is usefull to add in comment scheduling information from architecture
+  // specification.
+  // '#' comment mark is not supported by llvm-mca
+
+  CommentString = "";
+  if (Pos = S.find("\n"); Pos != std::string::npos) {
----------------
topperc wrote:

StringRef::npos since you're using StringRef::find

https://github.com/llvm/llvm-project/pull/130574