[llvm-branch-commits] [llvm-profgen] Support [buildid:]0xaddr format in perfscript input (PR #190863)

[Amir Ayupov via llvm-branch-commits]

================
@@ -654,6 +661,43 @@ void HybridPerfReader::unwindSamples() {
                      "frame to match.");
 }
 
+/// Parse an address that may optionally have a build ID prefix in
+/// [buildid:]addr format. Sets \p BuildID to the build ID prefix (empty if
+/// none) and \p Addr to the hex address. Returns true on success.
+/// Handles optional "0x" prefix on the address part.
+static bool parseAddressWithBuildID(StringRef Str, uint64_t &Addr,
+                                    StringRef &BuildID) {
+  BuildID = StringRef();
+  size_t ColonPos = Str.find(':');
+  if (ColonPos != StringRef::npos) {
+    BuildID = Str.substr(0, ColonPos);
+    Str = Str.substr(ColonPos + 1);
+  }
+  Str.consume_front("0x");
+  return !Str.getAsInteger(16, Addr);
+}
+
+/// Return the build ID to use for filtering perfscript addresses.
+/// If --filter-build-id is specified, use it as an override.
+/// Otherwise, use the auto-detected value from the binary.
+static StringRef getFilterBuildID(const ProfiledBinary *Binary) {
+  if (FilterBuildID.getNumOccurrences() > 0)
+    return FilterBuildID;
+  return Binary->getFilterBuildID();
+}
+
+/// Check if a line looks like an LBR sample line. LBR lines start with
+/// a space and the first whitespace-delimited token contains '/'.
+static bool looksLikeLBRLine(StringRef Line) {
----------------
aaupov wrote:

Moved to https://github.com/llvm/llvm-project/pull/191595

https://github.com/llvm/llvm-project/pull/190863