[SEH] Add new intrinsics for recovering and restoring parent frames

[oota-llvm.git] / include / llvm / IR / IntrinsicsX86.td

diff --git a/include/llvm/IR/IntrinsicsX86.td b/include/llvm/IR/IntrinsicsX86.td
index 79e57a6d565a262fd46fda511b863f8dd6c82824..b90825db93cdfe370bb58f63db993e6a49c56112 100644 (file)
--- a/include/llvm/IR/IntrinsicsX86.td
+++ b/include/llvm/IR/IntrinsicsX86.td
@@ -21,9 +21,17 @@ let TargetPrefix = "x86" in {  // All intrinsics start with "llvm.x86.".
 // SEH intrinsics for Windows
 let TargetPrefix = "x86" in {
   def int_x86_seh_lsda : Intrinsic<[llvm_ptr_ty], [llvm_ptr_ty], [IntrNoMem]>;
-  def int_x86_seh_exceptioninfo : Intrinsic<[llvm_ptr_ty],
-                                            [llvm_ptr_ty, llvm_ptr_ty],
-                                           [IntrReadMem]>;
+
+  // Restores the frame, base, and stack pointers as necessary after recovering
+  // from an exception. Any block resuming control flow in the parent function
+  // should call this before accessing any stack memory.
+  def int_x86_seh_restoreframe : Intrinsic<[], [], []>;
+
+  // Given a pointer to the end of an EH registration object, returns the true
+  // parent frame address that can be used with llvm.framerecover.
+  def int_x86_seh_recoverfp : Intrinsic<[llvm_ptr_ty],
+                                        [llvm_ptr_ty, llvm_ptr_ty],
+                                        [IntrNoMem]>;
 }
 
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