https://bugs.llvm.org/show_bug.cgi?id=35548
Bug ID: 35548
Summary: [X86] Warn if a scheduling instregex doesn't alter the
default schedule
Product: libraries
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: Backend: X86
Assignee: unassignedb...@nondot.org
Reporter: llvm-...@redking.me.uk
CC: andrea.dibia...@gmail.com,
andrew.v.tische...@gmail.com, gadi.ha...@intel.com,
llvm-bugs@lists.llvm.org, spatel+l...@rotateright.com
Blocks: 32325
Scheduler model instregex entries only need to be added if they alter the
behaviour of an instruction's default scheduling class/itinerary.
If the instregex is effectively useless, then tablegen should at least emit a
debug warning reporting that.
Referenced Bugs:
https://bugs.llvm.org/show_bug.cgi?id=32325
[Bug 32325] [META][X86] Improve implementation and use of X86 scheduler models
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