Add the framework for a dag-dag isel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24769 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Sparc/SparcTargetMachine.cpp b/lib/Target/Sparc/SparcTargetMachine.cpp
index ce9768e..65e97aa 100644
--- a/lib/Target/Sparc/SparcTargetMachine.cpp
+++ b/lib/Target/Sparc/SparcTargetMachine.cpp
@@ -20,12 +20,17 @@
#include "llvm/Target/TargetOptions.h"
#include "llvm/Target/TargetMachineRegistry.h"
#include "llvm/Transforms/Scalar.h"
+#include "llvm/Support/CommandLine.h"
#include <iostream>
using namespace llvm;
namespace {
// Register the target.
RegisterTarget<SparcV8TargetMachine> X("sparcv8"," SPARC V8 (experimental)");
+
+ cl::opt<bool> DisableV8DAGDAG("disable-v8-dag-isel", cl::Hidden,
+ cl::desc("Disable DAG-to-DAG isel for V8"),
+ cl::init(1));
}
/// SparcV8TargetMachine ctor - Create an ILP32 architecture model
@@ -87,7 +92,10 @@
if (PrintMachineCode)
PM.add(new PrintFunctionPass());
- PM.add(createSparcV8SimpleInstructionSelector(*this));
+ if (DisableV8DAGDAG)
+ PM.add(createSparcV8SimpleInstructionSelector(*this));
+ else
+ PM.add(createSparcV8ISelDag(*this));
// Print machine instructions as they were initially generated.
if (PrintMachineCode)