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(parent: 5b1a3cb) | patch
Don't compose DWARF expressions with multiple subregisters.
authorAdrian Prantl <aprantl@apple.com>
Wed, 22 Mar 2017 01:16:01 +0000 (01:16 +0000)
committerAdrian Prantl <aprantl@apple.com>
Wed, 22 Mar 2017 01:16:01 +0000 (01:16 +0000)
commita284ce24c9d86a4f39bf2aaf69cea13b3950e37f
treebe542dcf8c5712b9ffd6dec8140598f309e51b6etree | snapshot
parent5b1a3cb67cdb274aa6818dd267a67b8b14a222a7commit | diff
Don't compose DWARF expressions with multiple subregisters.

If a register location can only be described by a complex expression
(i.e., multiple subregisters) it doesn't safely compose with another
complex expression. For example, it is not possible to apply a
DW_OP_deref operation to multiple DW_OP_pieces.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@298472 91177308-0d34-0410-b5e6-96231b3b80d8
lib/CodeGen/AsmPrinter/DwarfExpression.cpp diff | blob | history
test/DebugInfo/MIR/ARM/split-superreg-complex.mir [new file with mode: 0644] blob
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