[AArch64] Support Windows stack probe command-line arguments.

[efriedma]

Summary

Adds support for -mno-stack-arg-probe and -mstack-probe-size.

(Not really happy copy-pasting code, but that's what we do for all the other Windows targets.)

[hans]

lgtm

lib/CodeGen/TargetInfo.cpp

public:
   }
 };
 
 class WindowsAArch64TargetCodeGenInfo : public AArch64TargetCodeGenInfo {
 public:
   WindowsAArch64TargetCodeGenInfo(CodeGenTypes &CGT, AArch64ABIInfo::ABIKind K)
       : AArch64TargetCodeGenInfo(CGT, K) {}
 
+  void setTargetAttributes(const Decl *D, llvm::GlobalValue *GV,
+                           CodeGen::CodeGenModule &CGM) const override;
+
   void getDependentLibraryOption(llvm::StringRef Lib,
                                  llvm::SmallString<24> &Opt) const override {
     Opt = "/DEFAULTLIB:" + qualifyWindowsLibrary(Lib);
   }
 
   void getDetectMismatchOption(llvm::StringRef Name, llvm::StringRef Value,
                                llvm::SmallString<32> &Opt) const override {
     Opt = "/FAILIFMISMATCH:\"" + Name.str() + "=" + Value.str() + "\"";
   }
 };
+
+void WindowsAArch64TargetCodeGenInfo::setTargetAttributes(
+    const Decl *D, llvm::GlobalValue *GV, CodeGen::CodeGenModule &CGM) const {
+  AArch64TargetCodeGenInfo::setTargetAttributes(D, GV, CGM);
+  if (GV->isDeclaration())
+    return;
+  addStackProbeTargetAttributes(D, GV, CGM);
+}
 }
 
 ABIArgInfo AArch64ABIInfo::classifyArgumentType(QualType Ty) const {
   Ty = useFirstFieldIfTransparentUnion(Ty);
 
   // Handle illegal vector types here.
   if (isIllegalVectorType(Ty)) {
     uint64_t Size = getContext().getTypeSize(Ty);

test/CodeGen/stack-arg-probe.c

 // RUN: %clang_cc1 %s -triple=i686-windows-msvc -emit-llvm -o - -mno-stack-arg-probe | FileCheck %s -check-prefix=NO-STACKPROBE
+// RUN: %clang_cc1 %s -triple=x86_64-windows-msvc -emit-llvm -o - -mno-stack-arg-probe | FileCheck %s -check-prefix=NO-STACKPROBE
+// RUN: %clang_cc1 %s -triple=armv7-windows-msvc -emit-llvm -o - -mno-stack-arg-probe | FileCheck %s -check-prefix=NO-STACKPROBE
+// RUN: %clang_cc1 %s -triple=aarch64-windows-msvc -emit-llvm -o - -mno-stack-arg-probe | FileCheck %s -check-prefix=NO-STACKPROBE
 // RUN: %clang_cc1 %s -triple=i686-windows-msvc -emit-llvm -o - | FileCheck %s -check-prefix=STACKPROBE
+// RUN: %clang_cc1 %s -triple=x86_64-windows-msvc -emit-llvm -o - | FileCheck %s -check-prefix=STACKPROBE
+// RUN: %clang_cc1 %s -triple=armv7-windows-msvc -emit-llvm -o - | FileCheck %s -check-prefix=STACKPROBE
+// RUN: %clang_cc1 %s -triple=aarch64-windows-msvc -emit-llvm -o - | FileCheck %s -check-prefix=STACKPROBE
+
 
 // NO-STACKPROBE: attributes #{{[0-9]+}} = {{{.*}} "no-stack-arg-probe"
-// STACKPROBE-NOT: attributes #{{[0-9]+}} = {{{.*}} "no-stack-arg-probe"
+// STACKPROBE-NOT: "no-stack-arg-probe"
 
 void test1() {
 }