Simplify lowering and selection of exception ops.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34491 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 38 insertions, 0 deletions

diff --git a/include/llvm/Target/TargetLowering.h b/include/llvm/Target/TargetLowering.h
index b52b68c..5aae258 100644
--- a/include/llvm/Target/TargetLowering.h
+++ b/include/llvm/Target/TargetLowering.h
@@ -403,6 +403,20 @@ public:
     return StackPointerRegisterToSaveRestore;
   }
 
+  /// getExceptionAddressRegister - If a physical register, this returns
+  /// the register that receives the exception address on entry to a landing
+  /// pad.
+  unsigned getExceptionAddressRegister() const {
+    return ExceptionPointerRegister;
+  }
+
+  /// getExceptionSelectorRegister - If a physical register, this returns
+  /// the register that receives the exception typeid on entry to a landing
+  /// pad.
+  unsigned getExceptionSelectorRegister() const {
+    return ExceptionSelectorRegister;
+  }
+
   /// getJumpBufSize - returns the target's jmp_buf size in bytes (if never
   /// set, the default is 200)
   unsigned getJumpBufSize() const {
@@ -604,6 +618,20 @@ protected:
     StackPointerRegisterToSaveRestore = R;
   }
   
+  /// setExceptionPointerRegister - If set to a physical register, this sets
+  /// the register that receives the exception address on entry to a landing
+  /// pad.
+  void setExceptionPointerRegister(unsigned R) {
+    ExceptionPointerRegister = R;
+  }
+
+  /// setExceptionSelectorRegister - If set to a physical register, this sets
+  /// the register that receives the exception typeid on entry to a landing
+  /// pad.
+  void setExceptionSelectorRegister(unsigned R) {
+    ExceptionSelectorRegister = R;
+  }
+
   /// SelectIsExpensive - Tells the code generator not to expand operations
   /// into sequences that use the select operations if possible.
   void setSelectIsExpensive() { SelectIsExpensive = true; }
@@ -956,6 +984,16 @@ private:
   /// and restore.
   unsigned StackPointerRegisterToSaveRestore;
 
+  /// ExceptionPointerRegister - If set to a physical register, this specifies
+  /// the register that receives the exception address on entry to a landing
+  /// pad.
+  unsigned ExceptionPointerRegister;
+
+  /// ExceptionSelectorRegister - If set to a physical register, this specifies
+  /// the register that receives the exception typeid on entry to a landing
+  /// pad.
+  unsigned ExceptionSelectorRegister;
+
   /// RegClassForVT - This indicates the default register class to use for
   /// each ValueType the target supports natively.
   TargetRegisterClass *RegClassForVT[MVT::LAST_VALUETYPE];