implement reading/writing of inlineasm objects

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36827 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 37 insertions, 6 deletions

diff --git a/lib/Bitcode/Reader/BitcodeReader.cpp b/lib/Bitcode/Reader/BitcodeReader.cpp
index c4e221fd36..283cd1df77 100644
--- a/lib/Bitcode/Reader/BitcodeReader.cpp
+++ b/lib/Bitcode/Reader/BitcodeReader.cpp
@@ -15,6 +15,7 @@
 #include "BitcodeReader.h"
 #include "llvm/Constants.h"
 #include "llvm/DerivedTypes.h"
+#include "llvm/InlineAsm.h"
 #include "llvm/Instructions.h"
 #include "llvm/Module.h"
 #include "llvm/ParameterAttributes.h"
@@ -759,6 +760,26 @@ bool BitcodeReader::ParseConstants() {
         V = ConstantExpr::getICmp(Record[3], Op0, Op1);
       break;
     }
+    case bitc::CST_CODE_INLINEASM: {
+      if (Record.size() < 2) return Error("Invalid INLINEASM record");
+      std::string AsmStr, ConstrStr;
+      bool HasSideEffects = Record[0];
+      unsigned AsmStrSize = Record[1];
+      if (2+AsmStrSize >= Record.size())
+        return Error("Invalid INLINEASM record");
+      unsigned ConstStrSize = Record[2+AsmStrSize];
+      if (3+AsmStrSize+ConstStrSize > Record.size())
+        return Error("Invalid INLINEASM record");
+      
+      for (unsigned i = 0; i != AsmStrSize; ++i)
+        AsmStr += (char)Record[2+i];
+      for (unsigned i = 0; i != ConstStrSize; ++i)
+        ConstrStr += (char)Record[3+AsmStrSize+i];
+      const PointerType *PTy = cast<PointerType>(CurTy);
+      V = InlineAsm::get(cast<FunctionType>(PTy->getElementType()),
+                         AsmStr, ConstrStr, HasSideEffects);
+      break;
+    }
     }
     
     ValueList.AssignValue(V, NextCstNo);
diff --git a/lib/Bitcode/Writer/BitcodeWriter.cpp b/lib/Bitcode/Writer/BitcodeWriter.cpp
index 8e1c4d2474..49cc56fec3 100644
--- a/lib/Bitcode/Writer/BitcodeWriter.cpp
+++ b/lib/Bitcode/Writer/BitcodeWriter.cpp
@@ -17,6 +17,7 @@
 #include "ValueEnumerator.h"
 #include "llvm/Constants.h"
 #include "llvm/DerivedTypes.h"
+#include "llvm/InlineAsm.h"
 #include "llvm/Instructions.h"
 #include "llvm/Module.h"
 #include "llvm/ParameterAttributes.h"
@@ -446,9 +447,6 @@ static void WriteConstants(unsigned FirstVal, unsigned LastVal,
     CString6Abbrev = Stream.EmitAbbrev(Abbv);
   }  
   
-  // FIXME: Install and use abbrevs to reduce size.  Install them globally so
-  // they don't need to be reemitted for each function body.
-  
   SmallVector<uint64_t, 64> Record;
 
   const ValueEnumerator::ValueList &Vals = VE.getValues();
@@ -465,7 +463,21 @@ static void WriteConstants(unsigned FirstVal, unsigned LastVal,
     }
     
     if (const InlineAsm *IA = dyn_cast<InlineAsm>(V)) {
-      assert(0 && IA && "FIXME: Inline asm writing unimp!");
+      Record.push_back(unsigned(IA->hasSideEffects()));
+      
+      // Add the asm string.
+      const std::string &AsmStr = IA->getAsmString();
+      Record.push_back(AsmStr.size());
+      for (unsigned i = 0, e = AsmStr.size(); i != e; ++i)
+        Record.push_back(AsmStr[i]);
+      
+      // Add the constraint string.
+      const std::string &ConstraintStr = IA->getConstraintString();
+      Record.push_back(ConstraintStr.size());
+      for (unsigned i = 0, e = ConstraintStr.size(); i != e; ++i)
+        Record.push_back(ConstraintStr[i]);
+      Stream.EmitRecord(bitc::CST_CODE_INLINEASM, Record);
+      Record.clear();
       continue;
     }
     const Constant *C = cast<Constant>(V);
@@ -894,8 +906,6 @@ static void WriteFunction(const Function &F, ValueEnumerator &VE,
   Stream.EmitRecord(bitc::FUNC_CODE_DECLAREBLOCKS, Vals);
   Vals.clear();
   
-  // FIXME: Function attributes?
-  
   // If there are function-local constants, emit them now.
   unsigned CstStart, CstEnd;
   VE.getFunctionConstantRange(CstStart, CstEnd);