[llvm-commits] [llvm] r97738 - /llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp

[Chris Lattner]

Author: lattner
Date: Thu Mar  4 13:46:56 2010
New Revision: 97738

URL: http://llvm.org/viewvc/llvm-project?rev=97738&view=rev
Log:
add a statistic for # times fastisel fails.

Modified:
    llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp

Modified: llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp?rev=97738&r1=97737&r2=97738&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp Thu Mar  4 13:46:56 2010
@@ -56,9 +56,12 @@
 #include "llvm/Support/MathExtras.h"
 #include "llvm/Support/Timer.h"
 #include "llvm/Support/raw_ostream.h"
+#include "llvm/ADT/Statistic.h"
 #include <algorithm>
 using namespace llvm;
 
+STATISTIC(NumFastIselFailures, "Number of instructions fast isel failed on");
+
 static cl::opt<bool>
 EnableFastISelVerbose("fast-isel-verbose", cl::Hidden,
           cl::desc("Enable verbose messages in the \"fast\" "
@@ -930,6 +933,7 @@
         // feed PHI nodes in successor blocks.
         if (isa<TerminatorInst>(BI))
           if (!HandlePHINodesInSuccessorBlocksFast(LLVMBB, FastIS)) {
+            ++NumFastIselFailures;
             ResetDebugLoc(SDB, FastIS);
             if (EnableFastISelVerbose || EnableFastISelAbort) {
               dbgs() << "FastISel miss: ";
@@ -954,6 +958,7 @@
 
         // Then handle certain instructions as single-LLVM-Instruction blocks.
         if (isa<CallInst>(BI)) {
+          ++NumFastIselFailures;
           if (EnableFastISelVerbose || EnableFastISelAbort) {
             dbgs() << "FastISel missed call: ";
             BI->dump();
@@ -983,6 +988,7 @@
         // Otherwise, give up on FastISel for the rest of the block.
         // For now, be a little lenient about non-branch terminators.
         if (!isa<TerminatorInst>(BI) || isa<BranchInst>(BI)) {
+          ++NumFastIselFailures;
           if (EnableFastISelVerbose || EnableFastISelAbort) {
             dbgs() << "FastISel miss: ";
             BI->dump();