[llvm-bugs] [Bug 48337] New: [X86] X86TargetTransformInfo - getCmpSelInstrCost doesn't discriminate between comparison codes

via llvm-bugs llvm-bugs at lists.llvm.org
Mon Nov 30 06:44:11 PST 2020


https://bugs.llvm.org/show_bug.cgi?id=48337

            Bug ID: 48337
           Summary: [X86] X86TargetTransformInfo - getCmpSelInstrCost
                    doesn't discriminate between comparison codes
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Backend: X86
          Assignee: unassignedbugs at nondot.org
          Reporter: llvm-dev at redking.me.uk
                CC: craig.topper at gmail.com, llvm-bugs at lists.llvm.org,
                    llvm-dev at redking.me.uk, pengfei.wang at intel.com,
                    spatel+llvm at rotateright.com
        Depends on: 40376

[Bug #40376] + D90070 added support for getCmpSelInstrCost to specify a
comparison code, the SSE/AVX/XOP/AVX512 targets now need to be updated to
better account for the various condcodes.


Referenced Bugs:

https://bugs.llvm.org/show_bug.cgi?id=40376
[Bug 40376] TargetTransformInfo::getCmpSelInstrCost should discriminate between
comparison codes
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