[llvm-bugs] [Bug 36897] New: [X86] Incorrect throughput for FP divide in Znver1 scheduler model

via llvm-bugs llvm-bugs at lists.llvm.org
Sun Mar 25 22:14:16 PDT 2018


https://bugs.llvm.org/show_bug.cgi?id=36897

            Bug ID: 36897
           Summary: [X86] Incorrect throughput for FP divide in Znver1
                    scheduler model
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Backend: X86
          Assignee: unassignedbugs at nondot.org
          Reporter: craig.topper at gmail.com
                CC: llvm-bugs at lists.llvm.org

I don't think this is right

; ZNVER1-LABEL: test_divps:
; ZNVER1:       # %bb.0:
; ZNVER1-NEXT:    vdivps %xmm1, %xmm0, %xmm0 # sched: [15:1.00]
; ZNVER1-NEXT:    vdivps (%rdi), %xmm0, %xmm0 # sched: [22:1.00]
; ZNVER1-NEXT:    retq # sched: [1:0.50]

-- 
You are receiving this mail because:
You are on the CC list for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-bugs/attachments/20180326/03f2c8a7/attachment.html>


More information about the llvm-bugs mailing list