[ResetMachineFunction] Emit the diagnostic isel fallback when asked.
This pass is now able to report when the function is being reset.
llvm-svn: 280272
diff --git a/llvm/lib/CodeGen/ResetMachineFunctionPass.cpp b/llvm/lib/CodeGen/ResetMachineFunctionPass.cpp
index 3b7729a..07a8259 100644
--- a/llvm/lib/CodeGen/ResetMachineFunctionPass.cpp
+++ b/llvm/lib/CodeGen/ResetMachineFunctionPass.cpp
@@ -13,6 +13,7 @@
#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;
@@ -20,11 +21,14 @@
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";
@@ -35,6 +39,11 @@
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;
@@ -48,6 +57,6 @@
"reset machine function if ISel failed", false, false)
MachineFunctionPass *
-llvm::createResetMachineFunctionPass() {
- return new ResetMachineFunction();
+llvm::createResetMachineFunctionPass(bool EmitFallbackDiag = false) {
+ return new ResetMachineFunction(EmitFallbackDiag);
}