[BOLT] Check BF state in stale matching (#85339)

Only apply stale matching if the binary function is in CFG state, i.e.
has basic blocks.

Test Plan:
Updated bolt/test/X86/reader-stale-yaml.test

Author: aaupov

bolt/lib/Profile/StaleProfileMatching.cpp

@@ -705,6 +705,9 @@ void assignProfile(BinaryFunction &BF,
 
 bool YAMLProfileReader::inferStaleProfile(
     BinaryFunction &BF, const yaml::bolt::BinaryFunctionProfile &YamlBF) {
+  if (!BF.hasCFG())
+    return false;
+
   LLVM_DEBUG(dbgs() << "BOLT-INFO: applying profile inference for "
                     << "\"" << BF.getPrintName() << "\"\n");
 

bolt/test/X86/reader-stale-yaml.test

@@ -14,6 +14,10 @@ RUN:   --profile-ignore-hash=1 --profile-use-dfs=0 --debug-only=bolt-prof 2>&1 |
 RUN: llvm-bolt %t.exe -o %t.null --b %p/Inputs/blarge_profile_stale.yaml \
 RUN:   --print-cfg --print-only=SolveCubic --infer-stale-profile=1 \
 RUN:   --profile-ignore-hash=1 --profile-use-dfs=0 --debug-only=bolt-prof 2>&1 | FileCheck %s -check-prefix=CHECK2
+# Testing skipped function
+RUN: llvm-bolt %t.exe -o %t.null --b %p/Inputs/blarge_profile_stale.yaml \
+RUN:   --print-cfg --print-only=usqrt --infer-stale-profile=1 --skip-funcs=usqrt \
+RUN:   --profile-ignore-hash=1 --profile-use-dfs=0
 
 CHECK0: BOLT-INFO: 2 out of 7 functions in the binary (28.6%) have non-empty execution profile
 CHECK0: BOLT-WARNING: 2 (100.0% of all profiled) functions have invalid (possibly stale) profile