[PATCH] D25178: [CodeGen] Don't assume that a landing pad exists in setMustKeepGlobalVariables

[Martin Storsjö via llvm-commits]

mstorsjo created this revision.
mstorsjo added a reviewer: qcolombet.
mstorsjo added a subscriber: llvm-commits.
Herald added a subscriber: aemerson.

This fixes crashes (PR30535) when building C++ code (with exceptions enabled) for ARM/Windows with optimizations enabled.


https://reviews.llvm.org/D25178

Files:
  lib/CodeGen/GlobalMerge.cpp


Index: lib/CodeGen/GlobalMerge.cpp
===================================================================
--- lib/CodeGen/GlobalMerge.cpp
+++ lib/CodeGen/GlobalMerge.cpp
@@ -511,6 +511,7 @@
       if (!II) continue;
 
       const LandingPadInst *LPInst = II->getUnwindDest()->getLandingPadInst();
+      if (!LPInst) continue;
       // Look for globals in the clauses of the landing pad instruction
       for (unsigned Idx = 0, NumClauses = LPInst->getNumClauses();
            Idx != NumClauses; ++Idx)


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