File: dead-void-ro.ll

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llvm-toolchain-16 1%3A16.0.6-15~deb12u1
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; RUN: opt -S -passes=bdce < %s | FileCheck %s

target triple = "x86_64-unknown-linux-gnu"

define void @PR34211(ptr %p) {
; CHECK-LABEL: @PR34211
  %not_demanded_but_not_dead = load volatile i16, ptr %p
  call void @no_side_effects_so_dead(i16 %not_demanded_but_not_dead)
  ret void

; CHECK: %not_demanded_but_not_dead = load volatile i16, ptr %p
; CHECK-NEXT: ret void
}

declare void @no_side_effects_so_dead(i16) #0

attributes #0 = { nounwind readnone willreturn }