Remove exception handling usage from tblgen.

Most places can use PrintFatalError as the unwinding mechanism was not
used for anything other than printing the error. The single exception
was CodeGenDAGPatterns.cpp, where intermediate errors during type
resolution were ignored to simplify incremental platform development.
This use is replaced by an error flag in TreePattern and bailout earlier
in various places if it is set. 

llvm-svn: 166712

1 files changed, 4 insertions, 2 deletions

diff --git a/llvm/utils/TableGen/InstrInfoEmitter.cpp b/llvm/utils/TableGen/InstrInfoEmitter.cpp
index 8e670e3cbc4..48d41d7b96b 100644
--- a/llvm/utils/TableGen/InstrInfoEmitter.cpp
+++ b/llvm/utils/TableGen/InstrInfoEmitter.cpp
@@ -19,6 +19,7 @@
 #include "TableGenBackends.h"
 #include "SequenceToOffsetTable.h"
 #include "llvm/ADT/StringExtras.h"
+#include "llvm/TableGen/Error.h"
 #include "llvm/TableGen/Record.h"
 #include "llvm/TableGen/TableGenBackend.h"
 #include <algorithm>
@@ -343,13 +344,14 @@ void InstrInfoEmitter::emitRecord(const CodeGenInstruction &Inst, unsigned Num,
 
   // Emit all of the target-specific flags...
   BitsInit *TSF = Inst.TheDef->getValueAsBitsInit("TSFlags");
-  if (!TSF) throw "no TSFlags?";
+  if (!TSF)
+    PrintFatalError("no TSFlags?");
   uint64_t Value = 0;
   for (unsigned i = 0, e = TSF->getNumBits(); i != e; ++i) {
     if (BitInit *Bit = dyn_cast<BitInit>(TSF->getBit(i)))
       Value |= uint64_t(Bit->getValue()) << i;
     else
-      throw "Invalid TSFlags bit in " + Inst.TheDef->getName();
+      PrintFatalError("Invalid TSFlags bit in " + Inst.TheDef->getName());
   }
   OS << ", 0x";
   OS.write_hex(Value);