GlobalISel: mark incoming landing-pad registers as live.

Should fix machine verifier failures.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@293334 91177308-0d34-0410-b5e6-96231b3b80d8
(cherry picked from commit 5041a6c)

Author: TNorthover

lib/CodeGen/GlobalISel/IRTranslator.cpp

@@ -759,13 +759,15 @@ bool IRTranslator::translateLandingPad(const User &U,
   SmallVector<unsigned, 2> Regs;
   SmallVector<uint64_t, 2> Offsets;
   if (unsigned Reg = TLI.getExceptionPointerRegister(PersonalityFn)) {
+    MBB.addLiveIn(Reg);
     unsigned VReg = MRI->createGenericVirtualRegister(Tys[0]);
     MIRBuilder.buildCopy(VReg, Reg);
     Regs.push_back(VReg);
     Offsets.push_back(0);
   }
 
   if (unsigned Reg = TLI.getExceptionSelectorRegister(PersonalityFn)) {
+    MBB.addLiveIn(Reg);
     unsigned VReg = MRI->createGenericVirtualRegister(Tys[1]);
     MIRBuilder.buildCopy(VReg, Reg);
     Regs.push_back(VReg);

test/CodeGen/AArch64/GlobalISel/legalize-exceptions.ll

@@ -1,4 +1,4 @@
-; RUN: llc -O0 -mtriple=aarch64-apple-ios -global-isel -stop-after=legalizer %s -o - | FileCheck %s
+; RUN: llc -O0 -mtriple=aarch64-apple-ios -verify-machineinstrs -global-isel -stop-after=legalizer %s -o - | FileCheck %s
 
 @_ZTIi = external global i8*