X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=utils%2FTableGen%2FAsmWriterEmitter.cpp;h=8fbb2cfbb61c887136cc68d75dcedf7f43f32715;hb=4c8c83022b501759d8559e224c84ae2a9921ba41;hp=5a24b26422e36437304f7028b14a8bb1583236ab;hpb=ae9f3a3b7c915f725aef5a7250e88eaeddda03c6;p=oota-llvm.git

diff --git a/utils/TableGen/AsmWriterEmitter.cpp b/utils/TableGen/AsmWriterEmitter.cpp
index 5a24b26422e..8fbb2cfbb61 100644
--- a/utils/TableGen/AsmWriterEmitter.cpp
+++ b/utils/TableGen/AsmWriterEmitter.cpp
@@ -122,7 +122,7 @@ AsmWriterInst::AsmWriterInst(const CodeGenInstruction &CGI, unsigned Variant) {
   std::string::size_type LastEmitted = 0;
   while (LastEmitted != AsmString.size()) {
     std::string::size_type DollarPos =
-      AsmString.find_first_of("${|}", LastEmitted);
+      AsmString.find_first_of("${|}\\", LastEmitted);
     if (DollarPos == std::string::npos) DollarPos = AsmString.size();
 
     // Emit a constant string fragment.
@@ -132,6 +132,23 @@ AsmWriterInst::AsmWriterInst(const CodeGenInstruction &CGI, unsigned Variant) {
         AddLiteralString(std::string(AsmString.begin()+LastEmitted,
                                      AsmString.begin()+DollarPos));
       LastEmitted = DollarPos;
+    } else if (AsmString[DollarPos] == '\\') {
+      if (DollarPos+1 != AsmString.size() &&
+          (CurVariant == Variant || CurVariant == ~0U)) {
+        if (AsmString[DollarPos+1] == 'n') {
+          AddLiteralString("\\n");
+        } else if (AsmString[DollarPos+1] == 't') {
+          AddLiteralString("\\t");
+        } else if (std::string("${|}\\").find(AsmString[DollarPos+1]) 
+                   != std::string::npos) {
+          AddLiteralString(std::string(1, AsmString[DollarPos+1]));
+        } else {
+          throw "Non-supported escaped character found in instruction '" +
+            CGI.TheDef->getName() + "'!";
+        }
+        LastEmitted = DollarPos+2;
+        continue;
+      }
     } else if (AsmString[DollarPos] == '{') {
       if (CurVariant != ~0U)
         throw "Nested variants found for instruction '" +
@@ -519,7 +536,7 @@ void AsmWriterEmitter::run(std::ostream &O) {
   }
   
   // Figure out how many bits we used for the string index.
-  unsigned AsmStrBits = Log2_32_Ceil(MaxStringIdx);
+  unsigned AsmStrBits = Log2_32_Ceil(MaxStringIdx+1);
   
   // To reduce code size, we compactify common instructions into a few bits
   // in the opcode-indexed table.
@@ -630,6 +647,9 @@ void AsmWriterEmitter::run(std::ostream &O) {
     << "  } else if (MI->getOpcode() == TargetInstrInfo::DECLARE) {\n"
     << "    printDeclare(MI);\n"
     << "    return true;\n"
+    << "  } else if (MI->getOpcode() == TargetInstrInfo::IMPLICIT_DEF) {\n"
+    << "    printImplicitDef(MI);\n"
+    << "    return true;\n"
     << "  }\n\n";
   
   O << "  O << \"\\t\";\n\n";