; RUN: llvm-as %s -o %t.bc
; RUN: llvm-spirv %t.bc -spirv-text -o %t.txt
; RUN: FileCheck < %t.txt %s --check-prefix=CHECK-SPIRV
; RUN: llvm-spirv %t.bc -o %t.spv
; RUN: spirv-val %t.spv
; RUN: llvm-spirv -r %t.spv -o %t.rev.bc
; RUN: llvm-dis < %t.rev.bc | FileCheck %s --check-prefix=CHECK-LLVM
; RUN: %if spirv-backend %{ llc -O0 -mtriple=spirv64-unknown-unknown -filetype=obj %s -o %t.llc.spv %}
; RUN: %if spirv-backend %{ llvm-spirv -r %t.llc.spv -o %t.llc.rev.bc %}
; RUN: %if spirv-backend %{ llvm-dis %t.llc.rev.bc -o %t.llc.rev.ll %}
; RUN: %if spirv-backend %{ FileCheck %s --check-prefix=CHECK-LLVM < %t.llc.rev.ll %}

; CHECK-SPIRV-NOT: llvm.memmove

target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "spir64-unknown-unknown"

declare void @llvm.memmove.p1.p1.i64(ptr addrspace(1) captures(none), ptr addrspace(1) captures(none) readonly, i64, i1)

define spir_func void @memmove_caller(ptr addrspace(1) %dst, ptr addrspace(1) %src, i64 %n) {
entry:
  call void @llvm.memmove.p1.p1.i64(ptr addrspace(1) %dst, ptr addrspace(1) %src, i64 %n, i1 false)
  call void @llvm.memmove.p1.p1.i64(ptr addrspace(1) %dst, ptr addrspace(1) %src, i64 %n, i1 false)
  call void @llvm.memmove.p1.p1.i64(ptr addrspace(1) %dst, ptr addrspace(1) %src, i64 %n, i1 false)
  ret void

; CHECK-LLVM: @memmove_caller(ptr addrspace(1) [[DST:%.*]], ptr addrspace(1) [[SRC:%.*]], i64 [[N:%.*]])
; CHECK-LLVM: [[COMPARE_N_TO_0:%.*]] = icmp eq i64 [[N]], 0
; CHECK-LLVM:  [[SRC_CMP:%.*]] = ptrtoint ptr addrspace(1) [[SRC]] to i64
; CHECK-LLVM:  [[DST_CMP:%.*]] = ptrtoint ptr addrspace(1) [[DST]] to i64
; CHECK-LLVM: [[COMPARE_SRC_DST:%.*]] = icmp ult i64 [[SRC_CMP]], [[DST_CMP]]
; CHECK-LLVM-NEXT: br i1 [[COMPARE_SRC_DST]], label %[[COPY_BACKWARDS:.*]], label %[[COPY_FORWARD:.*]]
; CHECK-LLVM: [[COPY_BACKWARDS]]:
}