/// using the MIR serialization format.
MachineFunctionPass *createPrintMIRPass(raw_ostream &OS);
- MachineFunctionPass *createResetMachineFunctionPass();
+ /// This pass resets a MachineFunction when it has the FailedISel property
+ /// as if it was just created.
+ /// If EmitFallbackDiag is true, the pass will emit a
+ /// DiagnosticInfoISelFallback for every MachineFunction it resets.
+ MachineFunctionPass *createResetMachineFunctionPass(bool EmitFallbackDiag);
/// createCodeGenPreparePass - Transform the code to expose more pattern
/// matching during instruction selection.
#include "llvm/CodeGen/Passes.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
+#include "llvm/IR/DiagnosticInfo.h"
#include "llvm/Support/Debug.h"
using namespace llvm;
namespace {
class ResetMachineFunction : public MachineFunctionPass {
+ /// Tells whether or not this pass should emit a fallback
+ /// diagnostic when it resets a function.
+ bool EmitFallbackDiag;
+
public:
static char ID; // Pass identification, replacement for typeid
- ResetMachineFunction() :
- MachineFunctionPass(ID) {
- }
+ ResetMachineFunction(bool EmitFallbackDiag = false)
+ : MachineFunctionPass(ID), EmitFallbackDiag(EmitFallbackDiag) {}
const char *getPassName() const override {
return "ResetMachineFunction";
MachineFunctionProperties::Property::FailedISel)) {
DEBUG(dbgs() << "Reseting: " << MF.getName() << '\n');
MF.reset();
+ if (EmitFallbackDiag) {
+ const Function &F = *MF.getFunction();
+ DiagnosticInfoISelFallback DiagFallback(F);
+ F.getContext().diagnose(DiagFallback);
+ }
return true;
}
return false;
"reset machine function if ISel failed", false, false)
MachineFunctionPass *
-llvm::createResetMachineFunctionPass() {
- return new ResetMachineFunction();
+llvm::createResetMachineFunctionPass(bool EmitFallbackDiag = false) {
+ return new ResetMachineFunction(EmitFallbackDiag);
}