[llvm-exegesis][NFC] Split BenchmarkRunner class

Summary:
The snippet-generation part goes to the SnippetGenerator class.

This will allow benchmarking arbitrary code (see PR38437).

Reviewers: gchatelet

Subscribers: mgorny, tschuett, llvm-commits

Differential Revision: https://reviews.llvm.org/D51979

llvm-svn: 342117

1 files changed, 24 insertions, 0 deletions

diff --git a/llvm/tools/llvm-exegesis/lib/Target.cpp b/llvm/tools/llvm-exegesis/lib/Target.cpp
index 67a9ea65195..a8b34878475 100644
--- a/llvm/tools/llvm-exegesis/lib/Target.cpp
+++ b/llvm/tools/llvm-exegesis/lib/Target.cpp
@@ -36,6 +36,20 @@ void ExegesisTarget::registerTarget(ExegesisTarget *Target) {
   FirstTarget = Target;
 }
 
+std::unique_ptr<SnippetGenerator>
+ExegesisTarget::createSnippetGenerator(InstructionBenchmark::ModeE Mode,
+                                       const LLVMState &State) const {
+  switch (Mode) {
+  case InstructionBenchmark::Unknown:
+    return nullptr;
+  case InstructionBenchmark::Latency:
+    return createLatencySnippetGenerator(State);
+  case InstructionBenchmark::Uops:
+    return createUopsSnippetGenerator(State);
+  }
+  return nullptr;
+}
+
 std::unique_ptr<BenchmarkRunner>
 ExegesisTarget::createBenchmarkRunner(InstructionBenchmark::ModeE Mode,
                                       const LLVMState &State) const {
@@ -50,6 +64,16 @@ ExegesisTarget::createBenchmarkRunner(InstructionBenchmark::ModeE Mode,
   return nullptr;
 }
 
+std::unique_ptr<SnippetGenerator>
+ExegesisTarget::createLatencySnippetGenerator(const LLVMState &State) const {
+  return llvm::make_unique<LatencySnippetGenerator>(State);
+}
+
+std::unique_ptr<SnippetGenerator>
+ExegesisTarget::createUopsSnippetGenerator(const LLVMState &State) const {
+  return llvm::make_unique<UopsSnippetGenerator>(State);
+}
+
 std::unique_ptr<BenchmarkRunner>
 ExegesisTarget::createLatencyBenchmarkRunner(const LLVMState &State) const {
   return llvm::make_unique<LatencyBenchmarkRunner>(State);