llvm-project/llvm/test/CodeGen/R600/llvm.AMDGPU.rcp.f64.ll

; RUN: llc -march=r600 -mcpu=SI -verify-machineinstrs < %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s

declare double @llvm.AMDGPU.rcp.f64(double) nounwind readnone
declare double @llvm.sqrt.f64(double) nounwind readnone

; FUNC-LABEL: @rcp_f64
; SI: V_RCP_F64_e32
define void @rcp_f64(double addrspace(1)* %out, double %src) nounwind {
  %rcp = call double @llvm.AMDGPU.rcp.f64(double %src) nounwind readnone
  store double %rcp, double addrspace(1)* %out, align 8
  ret void
}

; FUNC-LABEL: @rcp_pat_f64
; SI: V_RCP_F64_e32
define void @rcp_pat_f64(double addrspace(1)* %out, double %src) nounwind {
  %rcp = fdiv double 1.0, %src
  store double %rcp, double addrspace(1)* %out, align 8
  ret void
}

; FUNC-LABEL: @rsq_rcp_pat_f64
; SI-UNSAFE: V_RSQ_F64_e32
; SI-SAFE-NOT: V_RSQ_F64_e32
define void @rsq_rcp_pat_f64(double addrspace(1)* %out, double %src) nounwind {
  %sqrt = call double @llvm.sqrt.f64(double %src) nounwind readnone
  %rcp = call double @llvm.AMDGPU.rcp.f64(double %sqrt) nounwind readnone
  store double %rcp, double addrspace(1)* %out, align 8
  ret void
}