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Fix a crash with assembler source and -g.
Audit RequiredrL364039

Description

Fix a crash with assembler source and -g.

llvm-mc or clang with -g normally produces debug info describing the
assembler source itself; however, if that source already contains some
.file/.loc directives, we should instead emit the debug info described
by those directives. For certain assembler sources seen in the wild
(particularly in the Chrome build) this was causing a crash due to
incorrect assumptions about legal sequences of assembler source text.

Fixes PR38994.

Differential Revision: https://reviews.llvm.org/D63573

Details

Auditors
grosbach
Committed
probinsonJun 21 2019, 6:10 AM
Differential Revision
D63573: Fix a crash with assembler source and -g.
Parents
rL364038: [X86] X86ISD::ANDNP is a (non-commutative) binop
Branches
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