As it turns out the source of the sunkaddr can be a constant, in which case
there is not an instruction to delete, causing the cleanup code introduced in
r204833 to crash. This patch adds a dynamic check to ensure the deleted value is
in fact an instruction and not a constant.
Patch by Louis Gerbarg <lgg@apple.com>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205941
91177308-0d34-0410-b5e6-
96231b3b80d8
// the original IR value was tossed in favor of a constant back when
// the AddrMode was created we need to bail out gracefully if widths
// do not match instead of extending it.
- if (Result != AddrMode.BaseReg)
- cast<Instruction>(Result)->eraseFromParent();
+ Instruction *I = dyn_cast<Instruction>(Result);
+ if (I && (Result != AddrMode.BaseReg))
+ I->eraseFromParent();
return false;
}
if (AddrMode.Scale != 1)