tree 4ae92ab64f0e5e7998761c53b55a32fca8c5c388
parent 6af23264ad553eec9af20072efcdc1f16fa7df42
author Ben Vanik <benvanik@google.com> 1633478739 -0700
committer GitHub <noreply@github.com> 1633478739 -0700
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Adding a VM bytecode disassembler and flags for tracing to stderr. (#7261)

Tracing is enabled by default in debug builds or with
`-DIREE_VM_EXECUTION_TRACING_ENABLE=1` for others. A flag can then be
passed to iree_vm_context_t to enable tracing for all invocations
(including initializers) or passed per-invocation to trace only individual
calls. `--trace_execution` was added to iree-check-* and iree-run-*, but
all other tools/API usage can set
`-DIREE_VM_EXECUTION_TRACING_FORCE_ENABLE=1` to force it on.

Source locations can be printed per traced line too, however they are
only practically usable with vm source listings as otherwise they are
big multiline fused locs or call sites from python. Until some more
refinement of location printing can be done they are disabled but can be
turned back on with `-DIREE_VM_EXECUTION_TRACING_SRC_LOC_ENABLE=1`.