[llvm-bugs] [Bug 50265] New: [MCA] QoI: uses IsOptimizableRegisterMove even if RegisterFile doesn't say that the moves are eliminatible
via llvm-bugs
llvm-bugs at lists.llvm.org
Fri May 7 10:03:17 PDT 2021
https://bugs.llvm.org/show_bug.cgi?id=50265
Bug ID: 50265
Summary: [MCA] QoI: uses IsOptimizableRegisterMove even if
RegisterFile doesn't say that the moves are
eliminatible
Product: tools
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: llvm-mca
Assignee: unassignedbugs at nondot.org
Reporter: lebedev.ri at gmail.com
CC: andrea.dibiagio at gmail.com, llvm-bugs at lists.llvm.org,
matthew.davis at sony.com
So, i've now noticed that i have added e.g. MOVAPSrr
into IsOptimizableRegisterMove, but did not update FP RegisterFile
to mark VR128 regs moves as eliminatible, but MCA optimized moves still.
Does RegisterFile default to all moves being eliminatible?
That seems wrong.
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