Dale and Evan suggested putting the "check for setjmp" much earlier in the

machine code generation. That's a good idea, so I made it so.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104655 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 14 insertions, 1 deletions

diff --git a/include/llvm/CodeGen/MachineFunction.h b/include/llvm/CodeGen/MachineFunction.h
index 595872ad2d..ec25bc1319 100644
--- a/include/llvm/CodeGen/MachineFunction.h
+++ b/include/llvm/CodeGen/MachineFunction.h
@@ -114,9 +114,13 @@ class MachineFunction {
   ///
   unsigned FunctionNumber;
   
-  /// The alignment of the function.
+  /// Alignment - The alignment of the function.
   unsigned Alignment;
 
+  /// HasReturnsTwiceCall - Returns true if there's a call with a
+  /// "returns_twice" attribute, like setjmp.
+  bool HasReturnsTwiceCall;
+
   MachineFunction(const MachineFunction &); // DO NOT IMPLEMENT
   void operator=(const MachineFunction&);   // DO NOT IMPLEMENT
 public:
@@ -181,6 +185,15 @@ public:
   void EnsureAlignment(unsigned A) {
     if (Alignment < A) Alignment = A;
   }
+
+  /// hasReturnsTwiceCall - Returns true if there's a call with a
+  /// "returns_twice" attribute, like setjmp.
+  bool hasReturnsTwiceCall() const {
+    return HasReturnsTwiceCall;
+  }
+  void setReturnsTwiceCall(bool B) {
+    HasReturnsTwiceCall = B;
+  }
   
   /// getInfo - Keep track of various per-function pieces of information for
   /// backends that would like to do so.