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Fix error reporting in register scavenger (lack of emergency spill slot)

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- Do not store Twine objects.
- Remove report_fatal_error, since llvm_unreachable does terminate the
  program in release mode.

llvm-svn: 270233
This commit is contained in:
Krzysztof Parzyszek 2016-05-20 16:38:34 +00:00
parent e037aadc61
commit e163deaf59
1 changed files with 4 additions and 7 deletions
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11
lib/CodeGen/RegisterScavenging.cpp
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@ -440,13 +440,10 @@ unsigned RegScavenger::scavengeRegister(const TargetRegisterClass *RC,
// Spill the scavenged register before I.
int FI = Scavenged[SI].FrameIndex;
if (FI < FIB || FI >= FIE) {
Twine Msg = Twine("Error while trying to spill ") + TRI->getName(SReg) +
" from class " + TRI->getRegClassName(RC) +
": Cannot scavenge register without an emergency spill slot!";
// Keep both error functions, since llvm_unreachable prints the call
// stack, but it does not terminate program in release mode.
llvm_unreachable(Msg.str().c_str());
report_fatal_error(Msg);
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());
}
TII->storeRegToStackSlot(*MBB, I, SReg, true, Scavenged[SI].FrameIndex,
RC, TRI);