When generating spill and reload code for vector registers on PowerPC,

[oota-llvm.git] / lib / Target / X86 / X86TargetMachine.cpp

diff --git a/lib/Target/X86/X86TargetMachine.cpp b/lib/Target/X86/X86TargetMachine.cpp
index c66a55429465cdf5ed33e5af883a350219be9703..f8cced885d19c7675770c82759c83a9a3a340a29 100644 (file)
--- a/lib/Target/X86/X86TargetMachine.cpp
+++ b/lib/Target/X86/X86TargetMachine.cpp
@@ -36,7 +36,7 @@ X86_32TargetMachine::X86_32TargetMachine(const Target &T, StringRef TT,
                                          Reloc::Model RM, CodeModel::Model CM,
                                          CodeGenOpt::Level OL)
   : X86TargetMachine(T, TT, CPU, FS, Options, RM, CM, OL, false),
-    DataLayout(getSubtargetImpl()->isTargetDarwin() ?
+    DL(getSubtargetImpl()->isTargetDarwin() ?
                "e-p:32:32-f64:32:64-i64:32:64-f80:128:128-f128:128:128-"
                "n8:16:32-S128" :
                (getSubtargetImpl()->isTargetCygMing() ||
@@ -59,7 +59,7 @@ X86_64TargetMachine::X86_64TargetMachine(const Target &T, StringRef TT,
                                          Reloc::Model RM, CodeModel::Model CM,
                                          CodeGenOpt::Level OL)
   : X86TargetMachine(T, TT, CPU, FS, Options, RM, CM, OL, true),
-    DataLayout("e-p:64:64-s:64-f64:64:64-i64:64:64-f80:128:128-f128:128:128-"
+    DL("e-p:64:64-s:64-f64:64:64-i64:64:64-f80:128:128-f128:128:128-"
                "n8:16:32:64-S128"),
     InstrInfo(*this),
     TSInfo(*this),
@@ -113,6 +113,12 @@ UseVZeroUpper("x86-use-vzeroupper",
   cl::desc("Minimize AVX to SSE transition penalty"),
   cl::init(true));
 
+// Temporary option to control early if-conversion for x86 while adding machine
+// models.
+static cl::opt<bool>
+X86EarlyIfConv("x86-early-ifcvt",
+              cl::desc("Enable early if-conversion on X86"));
+
 //===----------------------------------------------------------------------===//
 // Pass Pipeline Configuration
 //===----------------------------------------------------------------------===//
@@ -140,7 +146,12 @@ public:
 } // namespace
 
 TargetPassConfig *X86TargetMachine::createPassConfig(PassManagerBase &PM) {
-  return new X86PassConfig(this, PM);
+  X86PassConfig *PC = new X86PassConfig(this, PM);
+
+  if (X86EarlyIfConv && Subtarget.hasCMov())
+    PC->enablePass(&EarlyIfConverterID);
+
+  return PC;
 }
 
 bool X86PassConfig::addInstSelector() {