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Diffstat (limited to 'llvm/docs/LangRef.rst')
| -rw-r--r-- | llvm/docs/LangRef.rst | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/docs/LangRef.rst b/llvm/docs/LangRef.rst index 9a8643bef8b..5fa698e7510 100644 --- a/llvm/docs/LangRef.rst +++ b/llvm/docs/LangRef.rst @@ -4769,6 +4769,10 @@ The current supported opcode vocabulary is limited: ``DW_OP_entry_value`` may also appear after the ``AsmPrinter`` pass when a call site parameter value (``DW_AT_call_site_parameter_value``) is represented as entry value of the parameter. +- ``DW_OP_breg`` (or ``DW_OP_bregx``) represents a content on the provided + signed offset of the specified register. The opcode is only generated by the + ``AsmPrinter`` pass to describe call site parameter value which requires an + expression over two registers. DWARF specifies three kinds of simple location descriptions: Register, memory, and implicit location descriptions. Note that a location description is |
