[PATCH] D20185: [AArch64] Fix bug in large stack spill slot handling (PR27717)

[Geoff Berry via llvm-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rL269697: [AArch64] Fix bug in large stack spill slot handling (PR27717) (authored by gberry).

Changed prior to commit:
  http://reviews.llvm.org/D20185?vs=56973&id=57396#toc

Repository:
  rL LLVM

http://reviews.llvm.org/D20185

Files:
  llvm/trunk/lib/Target/AArch64/AArch64FrameLowering.cpp

Index: llvm/trunk/lib/Target/AArch64/AArch64FrameLowering.cpp
===================================================================
--- llvm/trunk/lib/Target/AArch64/AArch64FrameLowering.cpp
+++ llvm/trunk/lib/Target/AArch64/AArch64FrameLowering.cpp
@@ -1126,7 +1126,9 @@
     // FIXME: the usual format is actually better if unwinding isn't needed.
     if (produceCompactUnwindFrame(MF) && !SavedRegs.test(PairedReg)) {
       SavedRegs.set(PairedReg);
-      ExtraCSSpill = true;
+      if (AArch64::GPR64RegClass.contains(PairedReg) &&
+          !RegInfo->isReservedReg(MF, PairedReg))
+        ExtraCSSpill = true;
     }
   }
 


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