Removing the HasBuiltinSetjmp flag and associated bits. Flagging the presence

of exception handling builtin sjlj targets in functions turns out not to 
be necessary. Marking the intrinsic implementation in the .td file as 
defining all registers is sufficient to get the context saved properly by 
the containing function.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71743 91177308-0d34-0410-b5e6-96231b3b80d8

4 files changed, 1 insertions, 20 deletions

diff --git a/include/llvm/CodeGen/MachineFunction.h b/include/llvm/CodeGen/MachineFunction.h
index 469ae02..a110e58 100644
--- a/include/llvm/CodeGen/MachineFunction.h
+++ b/include/llvm/CodeGen/MachineFunction.h
@@ -70,10 +70,6 @@ class MachineFunction : private Annotation {
   const Function *Fn;
   const TargetMachine &Target;
 
-  // HasBuiltinSetjmp - true if the function uses builtin_setjmp. Used to
-  // adjust callee-saved register tracking.
-  bool HasBuiltinSetjmp;
-
   // RegInfo - Information about each register in use in the function.
   MachineRegisterInfo *RegInfo;
 
@@ -127,14 +123,6 @@ public:
   ///
   const TargetMachine &getTarget() const { return Target; }
 
-  /// doesHaveBuiltinSetjmp - Return whether this function uses builtin_setjmp
-  ///
-  bool doesHaveBuiltinSetjmp() const { return HasBuiltinSetjmp; }
-
-  /// setHasBuiltinSetjmp - Mark whether this function uses builtin_setjmp
-  ///
-  void setHasBuiltinSetjmp (bool flag) { HasBuiltinSetjmp = flag; }
-
   /// getRegInfo - Return information about the registers currently in use.
   ///
   MachineRegisterInfo &getRegInfo() { return *RegInfo; }
diff --git a/lib/CodeGen/MachineFunction.cpp b/lib/CodeGen/MachineFunction.cpp
index cb19bec..5135308 100644
--- a/lib/CodeGen/MachineFunction.cpp
+++ b/lib/CodeGen/MachineFunction.cpp
@@ -121,7 +121,6 @@ MachineFunction::MachineFunction(const Function *F,
                   MachineRegisterInfo(*TM.getRegisterInfo());
   else
     RegInfo = 0;
-  HasBuiltinSetjmp = false;
   MFInfo = 0;
   FrameInfo = new (Allocator.Allocate<MachineFrameInfo>())
                   MachineFrameInfo(*TM.getFrameInfo());
diff --git a/lib/CodeGen/PrologEpilogInserter.cpp b/lib/CodeGen/PrologEpilogInserter.cpp
index 2c5c8c9..9e7ad67 100644
--- a/lib/CodeGen/PrologEpilogInserter.cpp
+++ b/lib/CodeGen/PrologEpilogInserter.cpp
@@ -180,7 +180,7 @@ void PEI::calculateCalleeSavedRegisters(MachineFunction &Fn) {
   std::vector<CalleeSavedInfo> CSI;
   for (unsigned i = 0; CSRegs[i]; ++i) {
     unsigned Reg = CSRegs[i];
-    if (Fn.getRegInfo().isPhysRegUsed(Reg) || Fn.doesHaveBuiltinSetjmp()) {
+    if (Fn.getRegInfo().isPhysRegUsed(Reg)) {
         // If the reg is modified, save it!
       CSI.push_back(CalleeSavedInfo(Reg, CSRegClasses[i]));
     } else {
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp
index cecd529..b340d0c 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp
@@ -3849,12 +3849,6 @@ SelectionDAGLowering::visitIntrinsicCall(CallInst &I, unsigned Intrinsic) {
   case Intrinsic::longjmp:
     return "_longjmp"+!TLI.usesUnderscoreLongJmp();
     break;
-  case Intrinsic::builtinsetjmp:
-    // Mark this function has using builtin_setjmp so context gets preserved
-    DAG.getMachineFunction().setHasBuiltinSetjmp(true);
-    // Turn it into a target intrinsic node for the codegen
-    visitTargetIntrinsic(I, Intrinsic);
-    return 0;
   case Intrinsic::memcpy: {
     SDValue Op1 = getValue(I.getOperand(1));
     SDValue Op2 = getValue(I.getOperand(2));