MIR Serialization: Serialize the '.cfi_same_value' CFI directive.

llvm-svn: 245103

4 files changed, 15 insertions, 0 deletions

diff --git a/llvm/lib/CodeGen/MIRParser/MILexer.cpp b/llvm/lib/CodeGen/MIRParser/MILexer.cpp
index e15a4d1e753..f607edddecc 100644
--- a/llvm/lib/CodeGen/MIRParser/MILexer.cpp
+++ b/llvm/lib/CodeGen/MIRParser/MILexer.cpp
@@ -196,6 +196,7 @@ static MIToken::TokenKind getIdentifierKind(StringRef Identifier) {
       .Case("debug-use", MIToken::kw_debug_use)
       .Case("frame-setup", MIToken::kw_frame_setup)
       .Case("debug-location", MIToken::kw_debug_location)
+      .Case(".cfi_same_value", MIToken::kw_cfi_same_value)
       .Case(".cfi_offset", MIToken::kw_cfi_offset)
       .Case(".cfi_def_cfa_register", MIToken::kw_cfi_def_cfa_register)
       .Case(".cfi_def_cfa_offset", MIToken::kw_cfi_def_cfa_offset)
diff --git a/llvm/lib/CodeGen/MIRParser/MILexer.h b/llvm/lib/CodeGen/MIRParser/MILexer.h
index e7abbb2dd89..747e6523e4b 100644
--- a/llvm/lib/CodeGen/MIRParser/MILexer.h
+++ b/llvm/lib/CodeGen/MIRParser/MILexer.h
@@ -57,6 +57,7 @@ struct MIToken {
     kw_debug_use,
     kw_frame_setup,
     kw_debug_location,
+    kw_cfi_same_value,
     kw_cfi_offset,
     kw_cfi_def_cfa_register,
     kw_cfi_def_cfa_offset,
diff --git a/llvm/lib/CodeGen/MIRParser/MIParser.cpp b/llvm/lib/CodeGen/MIRParser/MIParser.cpp
index b27a55b705d..c6383720e23 100644
--- a/llvm/lib/CodeGen/MIRParser/MIParser.cpp
+++ b/llvm/lib/CodeGen/MIRParser/MIParser.cpp
@@ -1093,6 +1093,12 @@ bool MIParser::parseCFIOperand(MachineOperand &Dest) {
   unsigned Reg;
   unsigned CFIIndex;
   switch (Kind) {
+  case MIToken::kw_cfi_same_value:
+    if (parseCFIRegister(Reg))
+      return true;
+    CFIIndex =
+        MMI.addFrameInst(MCCFIInstruction::createSameValue(nullptr, Reg));
+    break;
   case MIToken::kw_cfi_offset:
     if (parseCFIRegister(Reg) || expectAndConsume(MIToken::comma) ||
         parseCFIOffset(Offset))
@@ -1273,6 +1279,7 @@ bool MIParser::parseMachineOperand(MachineOperand &Dest) {
     return parseExternalSymbolOperand(Dest);
   case MIToken::exclaim:
     return parseMetadataOperand(Dest);
+  case MIToken::kw_cfi_same_value:
   case MIToken::kw_cfi_offset:
   case MIToken::kw_cfi_def_cfa_register:
   case MIToken::kw_cfi_def_cfa_offset:
diff --git a/llvm/lib/CodeGen/MIRPrinter.cpp b/llvm/lib/CodeGen/MIRPrinter.cpp
index d70b5c412f1..248db52790e 100644
--- a/llvm/lib/CodeGen/MIRPrinter.cpp
+++ b/llvm/lib/CodeGen/MIRPrinter.cpp
@@ -794,6 +794,12 @@ static void printCFIRegister(unsigned DwarfReg, raw_ostream &OS,
 void MIPrinter::print(const MCCFIInstruction &CFI,
                       const TargetRegisterInfo *TRI) {
   switch (CFI.getOperation()) {
+  case MCCFIInstruction::OpSameValue:
+    OS << ".cfi_same_value ";
+    if (CFI.getLabel())
+      OS << "<mcsymbol> ";
+    printCFIRegister(CFI.getRegister(), OS, TRI);
+    break;
   case MCCFIInstruction::OpOffset:
     OS << ".cfi_offset ";
     if (CFI.getLabel())