Add an "msasm" flag to inline asm as suggested in PR 5125.

A little ugliness is accepted to keep the binary file format
compatible.  No functional change yet.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84020 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 5 insertions, 3 deletions

diff --git a/lib/Bitcode/Reader/BitcodeReader.cpp b/lib/Bitcode/Reader/BitcodeReader.cpp
index 50b99ae383..4eb12c69eb 100644
--- a/lib/Bitcode/Reader/BitcodeReader.cpp
+++ b/lib/Bitcode/Reader/BitcodeReader.cpp
@@ -1164,7 +1164,8 @@ bool BitcodeReader::ParseConstants() {
     case bitc::CST_CODE_INLINEASM: {
       if (Record.size() < 2) return Error("Invalid INLINEASM record");
       std::string AsmStr, ConstrStr;
-      bool HasSideEffects = Record[0];
+      bool HasSideEffects = Record[0] & 1;
+      bool IsMsAsm = Record[0] >> 1;
       unsigned AsmStrSize = Record[1];
       if (2+AsmStrSize >= Record.size())
         return Error("Invalid INLINEASM record");
@@ -1178,7 +1179,7 @@ bool BitcodeReader::ParseConstants() {
         ConstrStr += (char)Record[3+AsmStrSize+i];
       const PointerType *PTy = cast<PointerType>(CurTy);
       V = InlineAsm::get(cast<FunctionType>(PTy->getElementType()),
-                         AsmStr, ConstrStr, HasSideEffects);
+                         AsmStr, ConstrStr, HasSideEffects, IsMsAsm);
       break;
     }
     }
diff --git a/lib/Bitcode/Writer/BitcodeWriter.cpp b/lib/Bitcode/Writer/BitcodeWriter.cpp
index 2c45b342e5..12a1f5ea5d 100644
--- a/lib/Bitcode/Writer/BitcodeWriter.cpp
+++ b/lib/Bitcode/Writer/BitcodeWriter.cpp
@@ -679,7 +679,8 @@ static void WriteConstants(unsigned FirstVal, unsigned LastVal,
     }
 
     if (const InlineAsm *IA = dyn_cast<InlineAsm>(V)) {
-      Record.push_back(unsigned(IA->hasSideEffects()));
+      Record.push_back(unsigned(IA->hasSideEffects()) |
+                       unsigned(IA->isMsAsm()) << 1);
 
       // Add the asm string.
       const std::string &AsmStr = IA->getAsmString();