Revert "[llvm-exegesis] Improve error reporting" and follow-up.
It broke e.g. all tests under tools/llvm-exegesis/X86/ when libpfm is
not available, see comment on D74085.
This reverts commit b3576f60ebc8f660afad8120a72473be47517573 and
141915963b6ab36ee4e577d1b27673fa4d05b409.
diff --git a/llvm/tools/llvm-exegesis/lib/Target.h b/llvm/tools/llvm-exegesis/lib/Target.h
index 1f35bfe..d9bddc5 100644
--- a/llvm/tools/llvm-exegesis/lib/Target.h
+++ b/llvm/tools/llvm-exegesis/lib/Target.h
@@ -132,7 +132,7 @@
const LLVMState &State,
const SnippetGenerator::Options &Opts) const;
// Creates a benchmark runner for the given mode.
- Expected<std::unique_ptr<BenchmarkRunner>>
+ std::unique_ptr<BenchmarkRunner>
createBenchmarkRunner(InstructionBenchmark::ModeE Mode,
const LLVMState &State) const;