Object: BSS/virtual sections don't have contents

[oota-llvm.git] / lib / CodeGen / Passes.cpp

diff --git a/lib/CodeGen/Passes.cpp b/lib/CodeGen/Passes.cpp
index 9568e238a2ca14f46e4539cb3773f63447d6f10e..53869b1544d1dd2610ca6fd3f013e7f4defe1bf0 100644 (file)
--- a/lib/CodeGen/Passes.cpp
+++ b/lib/CodeGen/Passes.cpp
@@ -30,11 +30,6 @@
 
 using namespace llvm;
 
-namespace llvm {
-extern cl::opt<bool> EnableStackMapLiveness;
-extern cl::opt<bool> EnablePatchPointLiveness;
-}
-
 static cl::opt<bool> DisablePostRA("disable-post-ra", cl::Hidden,
     cl::desc("Disable Post Regalloc"));
 static cl::opt<bool> DisableBranchFold("disable-branch-fold", cl::Hidden,
@@ -76,6 +71,8 @@ static cl::opt<bool> DisableCGP("disable-cgp", cl::Hidden,
     cl::desc("Disable Codegen Prepare"));
 static cl::opt<bool> DisableCopyProp("disable-copyprop", cl::Hidden,
     cl::desc("Disable Copy Propagation pass"));
+static cl::opt<bool> DisablePartialLibcallInlining("disable-partial-libcall-inlining",
+    cl::Hidden, cl::desc("Disable Partial Libcall Inlining"));
 static cl::opt<bool> PrintLSR("print-lsr-output", cl::Hidden,
     cl::desc("Print LLVM IR produced by the loop-reduce pass"));
 static cl::opt<bool> PrintISelInput("print-isel-input", cl::Hidden,
@@ -102,6 +99,10 @@ static cl::opt<bool> MISchedPostRA("misched-postra", cl::Hidden,
 static cl::opt<bool> EarlyLiveIntervals("early-live-intervals", cl::Hidden,
     cl::desc("Run live interval analysis earlier in the pipeline"));
 
+static cl::opt<bool> UseCFLAA("use-cfl-aa-in-codegen",
+  cl::init(false), cl::Hidden,
+  cl::desc("Enable the new, experimental CFL alias analysis in CodeGen"));
+
 /// Allow standard passes to be disabled by command line options. This supports
 /// simple binary flags that either suppress the pass or do nothing.
 /// i.e. -disable-mypass=false has no effect.
@@ -379,7 +380,10 @@ void TargetPassConfig::addIRPasses() {
   // Add TypeBasedAliasAnalysis before BasicAliasAnalysis so that
   // BasicAliasAnalysis wins if they disagree. This is intended to help
   // support "obvious" type-punning idioms.
+  if (UseCFLAA)
+    addPass(createCFLAliasAnalysisPass());
   addPass(createTypeBasedAliasAnalysisPass());
+  addPass(createScopedNoAliasAAPass());
   addPass(createBasicAliasAnalysisPass());
 
   // Before running any passes, run the verifier to determine if the input
@@ -404,6 +408,9 @@ void TargetPassConfig::addIRPasses() {
   // Prepare expensive constants for SelectionDAG.
   if (getOptLevel() != CodeGenOpt::None && !DisableConstantHoisting)
     addPass(createConstantHoistingPass());
+
+  if (getOptLevel() != CodeGenOpt::None && !DisablePartialLibcallInlining)
+    addPass(createPartiallyInlineLibCallsPass());
 }
 
 /// Turn exception handling constructs into something the code generators can
@@ -421,7 +428,7 @@ void TargetPassConfig::addPassesToHandleExceptions() {
     // FALLTHROUGH
   case ExceptionHandling::DwarfCFI:
   case ExceptionHandling::ARM:
-  case ExceptionHandling::Win64:
+  case ExceptionHandling::WinEH:
     addPass(createDwarfEHPass(TM));
     break;
   case ExceptionHandling::None:
@@ -566,8 +573,7 @@ void TargetPassConfig::addMachinePasses() {
   if (addPreEmitPass())
     printAndVerify("After PreEmit passes");
 
-  if (EnableStackMapLiveness || EnablePatchPointLiveness)
-    addPass(&StackMapLivenessID);
+  addPass(&StackMapLivenessID);
 }
 
 /// Add passes that optimize machine instructions in SSA form.
@@ -607,6 +613,9 @@ void TargetPassConfig::addMachineSSAOptimization() {
   printAndVerify("After Machine LICM, CSE and Sinking passes");
 
   addPass(&PeepholeOptimizerID);
+  // Clean-up the dead code that may have been generated by peephole
+  // rewriting.
+  addPass(&DeadMachineInstructionElimID);
   printAndVerify("After codegen peephole optimization pass");
 }