[llvm-exegesis] Add options to SnippetGenerator.

Summary:
This adds a `-max-configs-per-opcode` option to limit the number of
configs per opcode.

Reviewers: gchatelet

Subscribers: tschuett, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D68642

llvm-svn: 374054

1 files changed, 6 insertions, 1 deletions

diff --git a/llvm/tools/llvm-exegesis/lib/SnippetGenerator.h b/llvm/tools/llvm-exegesis/lib/SnippetGenerator.h
index c2ea1c12473..8e8cd6fcb99 100644
--- a/llvm/tools/llvm-exegesis/lib/SnippetGenerator.h
+++ b/llvm/tools/llvm-exegesis/lib/SnippetGenerator.h
@@ -51,7 +51,11 @@ public:
 // Common code for all benchmark modes.
 class SnippetGenerator {
 public:
-  explicit SnippetGenerator(const LLVMState &State);
+  struct Options {
+    unsigned MaxConfigsPerOpcode = 1;
+  };
+
+  explicit SnippetGenerator(const LLVMState &State, const Options &Opts);
 
   virtual ~SnippetGenerator();
 
@@ -66,6 +70,7 @@ public:
 
 protected:
   const LLVMState &State;
+  const Options Opts;
 
 private:
   // API to be implemented by subclasses.