[llvm-bugs] [Bug 27083] New: Invalid PPC CTR loop! w/ llvm.maxnum

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=27083

            Bug ID: 27083
           Summary: Invalid PPC CTR loop! w/ llvm.maxnum
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: Backend: PowerPC
          Assignee: unassignedbugs at nondot.org
          Reporter: david.majnemer at gmail.com
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

consider:
target triple = "powerpc64le-unknown-linux-gnu"

define void @test1(float %f, float* %fp) {
entry:
  br label %loop_body

loop_body:
  %invar_address.dim.0.01 = phi i64 [ 0, %entry ], [ %1, %loop_body ]
  %0 = tail call fast float @llvm.maxnum.f32(float %f, float 1.0)
  store float %0, float* %fp, align 4
  %1 = add i64 %invar_address.dim.0.01, 1
  %2 = icmp eq i64 %1, 2
  br i1 %2, label %loop_exit, label %loop_body

loop_exit:
  ret void
}

declare float @llvm.maxnum.f32(float, float)

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