https://bugs.llvm.org/show_bug.cgi?id=41446
Bug ID: 41446
Summary: Architecture documentation on expressions is
completely wrong
Product: lldb
Version: unspecified
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: All Bugs
Assignee: lldb-dev@lists.llvm.org
Reporter: r...@ocallahan.org
CC: llvm-b...@lists.llvm.org
https://lldb.llvm.org/architecture/index.html#expression
> The DWARF expression parser has been heavily modified to support type
> promotion, new opcodes needed for evaluating expressions with symbolic
> variable references (expression local variables, program variables), and
> other operators required by typical expressions such as assign, address of,
> float/double/long double floating point values, casting, and more.
Looks like this used to be true, but hasn't been true for years.
> Once expressions have be compiled into an AST, we can then traverse this AST
> and either generate a DWARF expression that contains simple opcodes that can
> be quickly re-evaluated each time an expression needs to be evaluated,
Looks like this doesn't happen. Instead LLIR is generated and then either
interpreted or JITed.
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