[llvm] r242551 - Use llvm_unreachable() instead of report_fatal_error() if the machine model is incomplete

[Matthias Braun]

Author: matze
Date: Fri Jul 17 12:50:11 2015
New Revision: 242551

URL: http://llvm.org/viewvc/llvm-project?rev=242551&view=rev
Log:
Use llvm_unreachable() instead of report_fatal_error() if the machine model is incomplete

This error is for developers only so it makes sense to abort and get a
backtrace.

Modified:
    llvm/trunk/lib/CodeGen/TargetSchedule.cpp

Modified: llvm/trunk/lib/CodeGen/TargetSchedule.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/TargetSchedule.cpp?rev=242551&r1=242550&r2=242551&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/TargetSchedule.cpp (original)
+++ llvm/trunk/lib/CodeGen/TargetSchedule.cpp Fri Jul 17 12:50:11 2015
@@ -211,11 +211,9 @@ unsigned TargetSchedModel::computeOperan
   if (SCDesc->isValid() && !DefMI->getOperand(DefOperIdx).isImplicit()
       && !DefMI->getDesc().OpInfo[DefOperIdx].isOptionalDef()
       && SchedModel.isComplete()) {
-    std::string Err;
-    raw_string_ostream ss(Err);
-    ss << "DefIdx " << DefIdx << " exceeds machine model writes for "
-       << *DefMI;
-    report_fatal_error(ss.str());
+    errs() << "DefIdx " << DefIdx << " exceeds machine model writes for "
+           << *DefMI;
+    llvm_unreachable("incomplete machine model");
   }
 #endif
   // FIXME: Automatically giving all implicit defs defaultDefLatency is