[FastISel] Collect statistics about failing intrinsic calls.

Add more instruction-specific statistics about failing intrinsic calls during
FastISel.

llvm-svn: 210556

1 files changed, 50 insertions, 1 deletions

diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index 472fc9c808f..57e22e21c37 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -141,6 +141,25 @@ STATISTIC(NumFastIselFailShuffleVector,"Fast isel fails on ShuffleVector");
 STATISTIC(NumFastIselFailExtractValue,"Fast isel fails on ExtractValue");
 STATISTIC(NumFastIselFailInsertValue,"Fast isel fails on InsertValue");
 STATISTIC(NumFastIselFailLandingPad,"Fast isel fails on LandingPad");
+
+// Intrinsic instructions...
+STATISTIC(NumFastIselFailIntrinsicCall, "Fast isel fails on Intrinsic call");
+STATISTIC(NumFastIselFailSAddWithOverflow,
+          "Fast isel fails on sadd.with.overflow");
+STATISTIC(NumFastIselFailUAddWithOverflow,
+          "Fast isel fails on uadd.with.overflow");
+STATISTIC(NumFastIselFailSSubWithOverflow,
+          "Fast isel fails on ssub.with.overflow");
+STATISTIC(NumFastIselFailUSubWithOverflow,
+          "Fast isel fails on usub.with.overflow");
+STATISTIC(NumFastIselFailSMulWithOverflow,
+          "Fast isel fails on smul.with.overflow");
+STATISTIC(NumFastIselFailUMulWithOverflow,
+          "Fast isel fails on umul.with.overflow");
+STATISTIC(NumFastIselFailFrameaddress, "Fast isel fails on Frameaddress");
+STATISTIC(NumFastIselFailSqrt, "Fast isel fails on sqrt call");
+STATISTIC(NumFastIselFailStackMap, "Fast isel fails on StackMap call");
+STATISTIC(NumFastIselFailPatchPoint, "Fast isel fails on PatchPoint call");
 #endif
 
 static cl::opt<bool>
@@ -974,7 +993,37 @@ static void collectFailStats(const Instruction *I) {
   case Instruction::FCmp:           NumFastIselFailFCmp++; return;
   case Instruction::PHI:            NumFastIselFailPHI++; return;
   case Instruction::Select:         NumFastIselFailSelect++; return;
-  case Instruction::Call:           NumFastIselFailCall++; return;
+  case Instruction::Call: {
+    if (auto const *Intrinsic = dyn_cast<IntrinsicInst>(I)) {
+      switch (Intrinsic->getIntrinsicID()) {
+      default:
+        NumFastIselFailIntrinsicCall++; return;
+      case Intrinsic::sadd_with_overflow:
+        NumFastIselFailSAddWithOverflow++; return;
+      case Intrinsic::uadd_with_overflow:
+        NumFastIselFailUAddWithOverflow++; return;
+      case Intrinsic::ssub_with_overflow:
+        NumFastIselFailSSubWithOverflow++; return;
+      case Intrinsic::usub_with_overflow:
+        NumFastIselFailUSubWithOverflow++; return;
+      case Intrinsic::smul_with_overflow:
+        NumFastIselFailSMulWithOverflow++; return;
+      case Intrinsic::umul_with_overflow:
+        NumFastIselFailUMulWithOverflow++; return;
+      case Intrinsic::frameaddress:
+        NumFastIselFailFrameaddress++; return;
+      case Intrinsic::sqrt:
+          NumFastIselFailSqrt++; return;
+      case Intrinsic::experimental_stackmap:
+        NumFastIselFailStackMap++; return;
+      case Intrinsic::experimental_patchpoint_void: // fall-through
+      case Intrinsic::experimental_patchpoint_i64:
+        NumFastIselFailPatchPoint++; return;
+      }
+    }
+    NumFastIselFailCall++;
+    return;
+  }
   case Instruction::Shl:            NumFastIselFailShl++; return;
   case Instruction::LShr:           NumFastIselFailLShr++; return;
   case Instruction::AShr:           NumFastIselFailAShr++; return;