MC: Sketch some TargetAsmBackend hooks we are going to need.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98221 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 22 insertions, 2 deletions

diff --git a/lib/Target/X86/X86AsmBackend.cpp b/lib/Target/X86/X86AsmBackend.cpp
index 2eda7b5..88cc2c7 100644
--- a/lib/Target/X86/X86AsmBackend.cpp
+++ b/lib/Target/X86/X86AsmBackend.cpp
@@ -21,14 +21,34 @@ public:
     : TargetAsmBackend(T) {}
 };
 
+class DarwinX86AsmBackend : public X86AsmBackend {
+public:
+  DarwinX86AsmBackend(const Target &T)
+    : X86AsmBackend(T) {}
+
+  virtual bool hasAbsolutizedSet() const { return true; }
+
+  virtual bool hasScatteredSymbols() const { return true; }
+};
+
 }
 
 TargetAsmBackend *llvm::createX86_32AsmBackend(const Target &T,
                                                const std::string &TT) {
-  return new X86AsmBackend(T);
+  switch (Triple(TT).getOS()) {
+  case Triple::Darwin:
+    return new DarwinX86AsmBackend(T);
+  default:
+    return new X86AsmBackend(T);
+  }
 }
 
 TargetAsmBackend *llvm::createX86_64AsmBackend(const Target &T,
                                                const std::string &TT) {
-  return new X86AsmBackend(T);
+  switch (Triple(TT).getOS()) {
+  case Triple::Darwin:
+    return new DarwinX86AsmBackend(T);
+  default:
+    return new X86AsmBackend(T);
+  }
 }