Add support for the new "target data" information in .ll files. This provides

a better encoding of the targets data layout, rather than trying to guess it
from the endianness and pointersize like before.

llvm-svn: 31030

3 files changed, 10 insertions, 0 deletions

diff --git a/llvm/lib/AsmParser/Lexer.l b/llvm/lib/AsmParser/Lexer.l
index 635318c40ce..af61a679fb1 100644
--- a/llvm/lib/AsmParser/Lexer.l
+++ b/llvm/lib/AsmParser/Lexer.l
@@ -210,6 +210,7 @@ triple          { return TRIPLE; }
 deplibs         { return DEPLIBS; }
 endian          { return ENDIAN; }
 pointersize     { return POINTERSIZE; }
+data          { return DATA; }
 little          { return LITTLE; }
 big             { return BIG; }
 volatile        { return VOLATILE; }
diff --git a/llvm/lib/AsmParser/llvmAsmParser.y b/llvm/lib/AsmParser/llvmAsmParser.y
index e57ca4ca5d4..2842f27f1b8 100644
--- a/llvm/lib/AsmParser/llvmAsmParser.y
+++ b/llvm/lib/AsmParser/llvmAsmParser.y
@@ -1068,6 +1068,7 @@ Module *llvm::RunVMAsmParser(const char * AsmString, Module * M) {
 %token DEPLIBS CALL TAIL ASM_TOK MODULE SIDEEFFECT
 %token CC_TOK CCC_TOK CSRETCC_TOK FASTCC_TOK COLDCC_TOK
 %token X86_STDCALLCC_TOK X86_FASTCALLCC_TOK
+%token DATA
 %type <UIntVal> OptCallingConv
 
 // Basic Block Terminating Operators
@@ -1873,6 +1874,11 @@ TargetDefinition : ENDIAN '=' BigOrLittle {
     free($3);
     CHECK_FOR_ERROR
   };
+  | DATA '=' STRINGCONSTANT {
+    CurModule.CurrentModule->setDataLayout($3);
+    free($3);
+    CHECK_FOR_ERROR
+  };
 
 LibrariesDefinition : '[' LibList ']';
 
diff --git a/llvm/lib/VMCore/AsmWriter.cpp b/llvm/lib/VMCore/AsmWriter.cpp
index 6b08266c312..aedb2c4040e 100644
--- a/llvm/lib/VMCore/AsmWriter.cpp
+++ b/llvm/lib/VMCore/AsmWriter.cpp
@@ -781,6 +781,9 @@ void AssemblyWriter::printModule(const Module *M) {
       M->getModuleIdentifier().find('\n') == std::string::npos)
     Out << "; ModuleID = '" << M->getModuleIdentifier() << "'\n";
 
+  if (!M->getDataLayout().empty())
+    Out << "target data = \"" << M->getDataLayout() << "\"\n";
+
   switch (M->getEndianness()) {
   case Module::LittleEndian: Out << "target endian = little\n"; break;
   case Module::BigEndian:    Out << "target endian = big\n";    break;