Add support for AArch64 target.
In cooperation with the LLVM patch, this should implement all scalar front-end
parts of the C and C++ ABIs for AArch64.
This patch excludes the NEON support also reviewed due to an outbreak of
batshit insanity in our legal department. That will be committed soon bringing
the changes to precisely what has been approved.
Further reviews would be gratefully received.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@174055 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/ItaniumCXXABI.cpp b/lib/CodeGen/ItaniumCXXABI.cpp
index fa25a27..a3d8cec 100644
--- a/lib/CodeGen/ItaniumCXXABI.cpp
+++ b/lib/CodeGen/ItaniumCXXABI.cpp
@@ -181,6 +181,12 @@
case TargetCXXABI::iOS:
return new ARMCXXABI(CGM);
+ // Note that AArch64 uses the generic ItaniumCXXABI class since it doesn't
+ // include the other 32-bit ARM oddities: constructor/destructor return values
+ // and array cookies.
+ case TargetCXXABI::GenericAArch64:
+ return new ItaniumCXXABI(CGM, /*IsARM = */ true);
+
case TargetCXXABI::GenericItanium:
return new ItaniumCXXABI(CGM);
@@ -1015,8 +1021,9 @@
if (useInt8GuardVariable) {
guardTy = CGF.Int8Ty;
} else {
- // Guard variables are 64 bits in the generic ABI and 32 bits on ARM.
- guardTy = (IsARM ? CGF.Int32Ty : CGF.Int64Ty);
+ // Guard variables are 64 bits in the generic ABI and size width on ARM
+ // (i.e. 32-bit on AArch32, 64-bit on AArch64).
+ guardTy = (IsARM ? CGF.SizeTy : CGF.Int64Ty);
}
llvm::PointerType *guardPtrTy = guardTy->getPointerTo();
@@ -1059,7 +1066,8 @@
// }
if (IsARM && !useInt8GuardVariable) {
llvm::Value *V = Builder.CreateLoad(guard);
- V = Builder.CreateAnd(V, Builder.getInt32(1));
+ llvm::Value *Test1 = llvm::ConstantInt::get(guardTy, 1);
+ V = Builder.CreateAnd(V, Test1);
isInitialized = Builder.CreateIsNull(V, "guard.uninitialized");
// Itanium C++ ABI 3.3.2: