Add fast-isel stats to determine who's doing all the work, the
target-independent selector or the target-specific selector.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144833 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/FastISel.cpp b/lib/CodeGen/SelectionDAG/FastISel.cpp
index c58d730..f0fe179 100644
--- a/lib/CodeGen/SelectionDAG/FastISel.cpp
+++ b/lib/CodeGen/SelectionDAG/FastISel.cpp
@@ -39,6 +39,7 @@
//
//===----------------------------------------------------------------------===//
+#define DEBUG_TYPE "isel"
#include "llvm/Function.h"
#include "llvm/GlobalVariable.h"
#include "llvm/Instructions.h"
@@ -58,8 +59,12 @@
#include "llvm/Target/TargetMachine.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/Debug.h"
+#include "llvm/ADT/Statistic.h"
using namespace llvm;
+STATISTIC(NumFastIselSuccessIndependent, "Number of insts selected by target-independent selector");
+STATISTIC(NumFastIselSuccessTarget, "Number of insts selected by target-specific selector");
+
/// startNewBlock - Set the current block to which generated machine
/// instructions will be appended, and clear the local CSE map.
///
@@ -765,12 +770,14 @@
// First, try doing target-independent selection.
if (SelectOperator(I, I->getOpcode())) {
+ ++NumFastIselSuccessIndependent;
DL = DebugLoc();
return true;
}
// Next, try calling the target to attempt to handle the instruction.
if (TargetSelectInstruction(I)) {
+ ++NumFastIselSuccessTarget;
DL = DebugLoc();
return true;
}