[llvm] r270260 - Use report_fatal_error after all

[Krzysztof Parzyszek via llvm-commits]

Author: kparzysz
Date: Fri May 20 14:46:42 2016
New Revision: 270260

URL: http://llvm.org/viewvc/llvm-project?rev=270260&view=rev
Log:
Use report_fatal_error after all

Depending on the compiler used to build LLVM, llvm_unreachable can either
expand to a call to abort(), or to a __builtin_unreachable. The latter
does not have a predictable behavior at runtime.

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

Modified: llvm/trunk/lib/CodeGen/RegisterScavenging.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/RegisterScavenging.cpp?rev=270260&r1=270259&r2=270260&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/RegisterScavenging.cpp (original)
+++ llvm/trunk/lib/CodeGen/RegisterScavenging.cpp Fri May 20 14:46:42 2016
@@ -443,7 +443,7 @@ unsigned RegScavenger::scavengeRegister(
       std::string Msg = std::string("Error while trying to spill ") +
           TRI->getName(SReg) + " from class " + TRI->getRegClassName(RC) +
           ": Cannot scavenge register without an emergency spill slot!";
-      llvm_unreachable(Msg.c_str());
+      report_fatal_error(Msg.c_str());
     }
     TII->storeRegToStackSlot(*MBB, I, SReg, true, Scavenged[SI].FrameIndex,
                              RC, TRI);