https://llvm.org/bugs/show_bug.cgi?id=24261
Bug ID: 24261
Summary: llc -stop-after/-start-after do not work with target
passes
Product: libraries
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: Common Code Generator Code
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected],
[email protected]
Classification: Unclassified
An example with an ARM pass, though the problem affects all targets:
Using the llc -stop-after/-start-after fail to recognize target passes. For
example
llc -stop-after arm-load-store-opt test.ll
results in:
llc: stop-after pass is not registered.
The problems is that initializeARMLoadStoreOpt() is only called in the
ARMLoadStoreOpt constructor. This makes the Pass unknown if it is not part of
the default pipeline, even if you move the initializeARMLoadStoreOptPass() to
something like the ARMTargetMachine constructor does not help because the
target is initialized after the stop-after/start-after switches are checked in
the llc tool.
This makes it impossible to write MIR-serialization based tests for target
passes at the moment.
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