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[X86] Change an llvm_unreachable to a report_fatal_error so the optimizer will stop making us reach the other report_fatal_error in this function.

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There's a conditional report_fatal_error just above this llvm_unreachable. The optimizer when seeing the unreachable removes the conditional and just makes any other error trigger the existing report_fatal_error.

llvm-svn: 343428
This commit is contained in:
Craig Topper 2018-09-30 23:43:30 +00:00
parent ede9bf8a18
commit d2f24433be
1 changed files with 1 additions and 1 deletions
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2
lib/Target/X86/X86InstrInfo.cpp
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@ -3119,7 +3119,7 @@ void X86InstrInfo::copyPhysReg(MachineBasicBlock &MBB,
LLVM_DEBUG(dbgs() << "Cannot copy " << RI.getName(SrcReg) << " to "
<< RI.getName(DestReg) << '\n');
llvm_unreachable("Cannot emit physreg copy instruction");
report_fatal_error("Cannot emit physreg copy instruction");
}
bool X86InstrInfo::isCopyInstrImpl(const MachineInstr &MI,