From 1e7fe751466ea82665fd21e9162fd7cc9c5f412d Mon Sep 17 00:00:00 2001
From: John McCall <rjmccall@apple.com>
Date: Thu, 2 Sep 2010 09:58:18 +0000
Subject: Abstract IR generation of array cookies into the C++ ABI class and
 implement ARM array cookies.  Also fix a few unfortunate bugs:   - throwing
 dtors in deletes prevented the allocation from being deleted   - adding the
 cookie to the new[] size was not being considered for     overflow (and, more
 seriously, was screwing up the earlier checks)   - deleting an array via a
 pointer to array of class type was not     causing any destructors to be run
 and was passing the unadjusted     pointer to the deallocator   - lots of
 address-space problems, in case anyone wants to support     free store in a
 variant address space :)

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112814 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/CGCXX.cpp | 26 +++++++++++++++++++++++++-
 1 file changed, 25 insertions(+), 1 deletion(-)

(limited to 'lib/CodeGen/CGCXX.cpp')

diff --git a/lib/CodeGen/CGCXX.cpp b/lib/CodeGen/CGCXX.cpp
index f8d81fa796..179716f631 100644
--- a/lib/CodeGen/CGCXX.cpp
+++ b/lib/CodeGen/CGCXX.cpp
@@ -327,7 +327,7 @@ static void ErrorUnsupportedABI(CodeGenFunction &CGF,
                                 llvm::StringRef S) {
   Diagnostic &Diags = CGF.CGM.getDiags();
   unsigned DiagID = Diags.getCustomDiagID(Diagnostic::Error,
-                                          "cannot yet compile %s in this ABI");
+                                          "cannot yet compile %1 in this ABI");
   Diags.Report(CGF.getContext().getFullLoc(CGF.CurCodeDecl->getLocation()),
                DiagID)
     << S;
@@ -445,3 +445,27 @@ void CGCXXABI::EmitReturnFromThunk(CodeGenFunction &CGF,
                                    RValue RV, QualType ResultType) {
   CGF.EmitReturnOfRValue(RV, ResultType);
 }
+
+CharUnits CGCXXABI::GetArrayCookieSize(QualType ElementType) {
+  return CharUnits::Zero();
+}
+
+llvm::Value *CGCXXABI::InitializeArrayCookie(CodeGenFunction &CGF,
+                                             llvm::Value *NewPtr,
+                                             llvm::Value *NumElements,
+                                             QualType ElementType) {
+  // Should never be called.
+  ErrorUnsupportedABI(CGF, "array cookie initialization");
+  return 0;
+}
+
+void CGCXXABI::ReadArrayCookie(CodeGenFunction &CGF, llvm::Value *Ptr,
+                               QualType ElementType, llvm::Value *&NumElements,
+                               llvm::Value *&AllocPtr, CharUnits &CookieSize) {
+  ErrorUnsupportedABI(CGF, "array cookie reading");
+
+  // This should be enough to avoid assertions.
+  NumElements = 0;
+  AllocPtr = llvm::Constant::getNullValue(CGF.Builder.getInt8PtrTy());
+  CookieSize = CharUnits::Zero();
+}
-- 
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