Implement .cfi_remember_state and .cfi_restore_state.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122602 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MCParser/AsmParser.cpp b/lib/MC/MCParser/AsmParser.cpp
index 27b2dce..76c309e 100644
--- a/lib/MC/MCParser/AsmParser.cpp
+++ b/lib/MC/MCParser/AsmParser.cpp
@@ -254,6 +254,10 @@
      &GenericAsmParser::ParseDirectiveCFIPersonalityOrLsda>(".cfi_personality");
     AddDirectiveHandler<
             &GenericAsmParser::ParseDirectiveCFIPersonalityOrLsda>(".cfi_lsda");
+    AddDirectiveHandler<
+      &GenericAsmParser::ParseDirectiveCFIRememberState>(".cfi_remember_state");
+    AddDirectiveHandler<
+      &GenericAsmParser::ParseDirectiveCFIRestoreState>(".cfi_restore_state");
 
     // Macro directives.
     AddDirectiveHandler<&GenericAsmParser::ParseDirectiveMacrosOnOff>(
@@ -278,6 +282,8 @@
   bool ParseDirectiveCFIDefCfaRegister(StringRef, SMLoc DirectiveLoc);
   bool ParseDirectiveCFIOffset(StringRef, SMLoc DirectiveLoc);
   bool ParseDirectiveCFIPersonalityOrLsda(StringRef, SMLoc DirectiveLoc);
+  bool ParseDirectiveCFIRememberState(StringRef, SMLoc DirectiveLoc);
+  bool ParseDirectiveCFIRestoreState(StringRef, SMLoc DirectiveLoc);
 
   bool ParseDirectiveMacrosOnOff(StringRef, SMLoc DirectiveLoc);
   bool ParseDirectiveMacro(StringRef, SMLoc DirectiveLoc);
@@ -2261,6 +2267,20 @@
   }
 }
 
+/// ParseDirectiveCFIRememberState
+/// ::= .cfi_remember_state
+bool GenericAsmParser::ParseDirectiveCFIRememberState(StringRef IDVal,
+                                                      SMLoc DirectiveLoc) {
+  return getStreamer().EmitCFIRememberState();
+}
+
+/// ParseDirectiveCFIRestoreState
+/// ::= .cfi_remember_state
+bool GenericAsmParser::ParseDirectiveCFIRestoreState(StringRef IDVal,
+                                                     SMLoc DirectiveLoc) {
+  return getStreamer().EmitCFIRestoreState();
+}
+
 /// ParseDirectiveMacrosOnOff
 /// ::= .macros_on
 /// ::= .macros_off