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tweak the arm if conversion heuristic

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99402 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Grosbach
2010-03-24 16:15:14 +00:00
parent 15417383b9
commit 35075a7e81
1 changed files with 1 additions and 7 deletions
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8
lib/Target/ARM/ARMISelLowering.cpp
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@@ -40,18 +40,12 @@
#include "llvm/MC/MCSectionMachO.h" #include "llvm/MC/MCSectionMachO.h"
#include "llvm/Target/TargetOptions.h" #include "llvm/Target/TargetOptions.h"
#include "llvm/ADT/VectorExtras.h" #include "llvm/ADT/VectorExtras.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/ErrorHandling.h" #include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/MathExtras.h" #include "llvm/Support/MathExtras.h"
#include "llvm/Support/raw_ostream.h" #include "llvm/Support/raw_ostream.h"
#include <sstream> #include <sstream>
using namespace llvm; using namespace llvm;
static cl::opt<bool>
aggressiveV7IfConvert("arm-aggressive-v7-ifcvt", cl::Hidden,
cl::desc("Enable more liberal if-converstion for v7"),
cl::init(false));
static bool CC_ARM_APCS_Custom_f64(unsigned &ValNo, EVT &ValVT, EVT &LocVT, static bool CC_ARM_APCS_Custom_f64(unsigned &ValNo, EVT &ValVT, EVT &LocVT,
CCValAssign::LocInfo &LocInfo, CCValAssign::LocInfo &LocInfo,
ISD::ArgFlagsTy &ArgFlags, ISD::ArgFlagsTy &ArgFlags,
@@ -462,7 +456,7 @@ ARMTargetLowering::ARMTargetLowering(TargetMachine &TM)
// Generic (and overly aggressive) if-conversion limits. // Generic (and overly aggressive) if-conversion limits.
setIfCvtBlockSizeLimit(10); setIfCvtBlockSizeLimit(10);
setIfCvtDupBlockSizeLimit(2); setIfCvtDupBlockSizeLimit(2);
} else if (aggressiveV7IfConvert && Subtarget->hasV7Ops()) { } else if (Subtarget->hasV7Ops()) {
setIfCvtBlockSizeLimit(3); setIfCvtBlockSizeLimit(3);
setIfCvtDupBlockSizeLimit(1); setIfCvtDupBlockSizeLimit(1);
} else if (Subtarget->hasV6Ops()) { } else if (Subtarget->hasV6Ops()) {