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Commit 8c050070 authored by Craig Topper's avatar Craig Topper
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[X86] Fix a nullptr dereference in X86Subtarget::classifyLocalReference when... 

[X86] Fix a nullptr dereference in X86Subtarget::classifyLocalReference when compiling with -mcmodel=medium -fpic and using a constant pool

LowerConstantPool passes a nullptr into classifyLocalReference. The medium code model handling for PIC will try to deference it using isa. This patch switches to isa_and_nonnull.

Differential Revision: https://reviews.llvm.org/D80763
parent 1285e8bc
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