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add a statistic for # times fastisel fails.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97738 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2010-03-04 19:46:56 +00:00
parent 39c75f2e90
commit c19ae9d91d
1 changed files with 6 additions and 0 deletions
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6
lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
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@ -56,9 +56,12 @@
#include "llvm/Support/MathExtras.h" #include "llvm/Support/MathExtras.h"
#include "llvm/Support/Timer.h" #include "llvm/Support/Timer.h"
#include "llvm/Support/raw_ostream.h" #include "llvm/Support/raw_ostream.h"
#include "llvm/ADT/Statistic.h"
#include <algorithm> #include <algorithm>
using namespace llvm; using namespace llvm;
STATISTIC(NumFastIselFailures, "Number of instructions fast isel failed on");
static cl::opt<bool> static cl::opt<bool>
EnableFastISelVerbose("fast-isel-verbose", cl::Hidden, EnableFastISelVerbose("fast-isel-verbose", cl::Hidden,
cl::desc("Enable verbose messages in the \"fast\" " cl::desc("Enable verbose messages in the \"fast\" "
@ -930,6 +933,7 @@ void SelectionDAGISel::SelectAllBasicBlocks(Function &Fn,
// feed PHI nodes in successor blocks. // feed PHI nodes in successor blocks.
if (isa<TerminatorInst>(BI)) if (isa<TerminatorInst>(BI))
if (!HandlePHINodesInSuccessorBlocksFast(LLVMBB, FastIS)) { if (!HandlePHINodesInSuccessorBlocksFast(LLVMBB, FastIS)) {
++NumFastIselFailures;
ResetDebugLoc(SDB, FastIS); ResetDebugLoc(SDB, FastIS);
if (EnableFastISelVerbose || EnableFastISelAbort) { if (EnableFastISelVerbose || EnableFastISelAbort) {
dbgs() << "FastISel miss: "; dbgs() << "FastISel miss: ";
@ -954,6 +958,7 @@ void SelectionDAGISel::SelectAllBasicBlocks(Function &Fn,
// Then handle certain instructions as single-LLVM-Instruction blocks. // Then handle certain instructions as single-LLVM-Instruction blocks.
if (isa<CallInst>(BI)) { if (isa<CallInst>(BI)) {
++NumFastIselFailures;
if (EnableFastISelVerbose || EnableFastISelAbort) { if (EnableFastISelVerbose || EnableFastISelAbort) {
dbgs() << "FastISel missed call: "; dbgs() << "FastISel missed call: ";
BI->dump(); BI->dump();
@ -983,6 +988,7 @@ void SelectionDAGISel::SelectAllBasicBlocks(Function &Fn,
// Otherwise, give up on FastISel for the rest of the block. // Otherwise, give up on FastISel for the rest of the block.
// For now, be a little lenient about non-branch terminators. // For now, be a little lenient about non-branch terminators.
if (!isa<TerminatorInst>(BI) || isa<BranchInst>(BI)) { if (!isa<TerminatorInst>(BI) || isa<BranchInst>(BI)) {
++NumFastIselFailures;
if (EnableFastISelVerbose || EnableFastISelAbort) { if (EnableFastISelVerbose || EnableFastISelAbort) {
dbgs() << "FastISel miss: "; dbgs() << "FastISel miss: ";
BI->dump(); BI->dump();