implement error recovery in the llvm-mc parser. Feel the power!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74728 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 11 insertions, 4 deletions

diff --git a/tools/llvm-mc/AsmParser.cpp b/tools/llvm-mc/AsmParser.cpp
index 339a16db8c..f5bf589201 100644
--- a/tools/llvm-mc/AsmParser.cpp
+++ b/tools/llvm-mc/AsmParser.cpp
@@ -40,11 +40,18 @@ bool AsmParser::Run() {
   // Prime the lexer.
   Lexer.Lex();
   
-  while (Lexer.isNot(asmtok::Eof))
-    if (ParseStatement())
-      return true;
+  bool HadError = false;
   
-  return false;
+  // While we have input, parse each statement.
+  while (Lexer.isNot(asmtok::Eof)) {
+    if (!ParseStatement()) continue;
+  
+    // If we had an error, remember it and recover by skipping to the next line.
+    HadError = true;
+    EatToEndOfStatement();
+  }
+  
+  return HadError;
 }
 
 /// EatToEndOfStatement - Throw away the rest of the line for testing purposes.