llvm-project/llvm/test/CodeGen/R600/fdiv.ll

; RUN: llc < %s -march=r600 -mcpu=redwood | FileCheck %s --check-prefix=R600-CHECK
; RUN: llc < %s -march=r600 -mcpu=SI -verify-machineinstrs | FileCheck %s --check-prefix=SI-CHECK

; These tests check that fdiv is expanded correctly and also test that the
; scheduler is scheduling the RECIP_IEEE and MUL_IEEE instructions in separate
; instruction groups.

; R600-CHECK: @fdiv_v2f32
; R600-CHECK-DAG: RECIP_IEEE * T{{[0-9]+\.[XYZW]}}, KC0[3].Z
; R600-CHECK-DAG: RECIP_IEEE * T{{[0-9]+\.[XYZW]}}, KC0[3].Y
; R600-CHECK-DAG: MUL_IEEE {{\** *}}T{{[0-9]+\.[XYZW]}}, KC0[3].X, PS
; R600-CHECK-DAG: MUL_IEEE {{\** *}}T{{[0-9]+\.[XYZW]}}, KC0[2].W, PS
; SI-CHECK: @fdiv_v2f32
; SI-CHECK-DAG: V_RCP_F32
; SI-CHECK-DAG: V_MUL_F32
; SI-CHECK-DAG: V_RCP_F32
; SI-CHECK-DAG: V_MUL_F32
define void @fdiv_v2f32(<2 x float> addrspace(1)* %out, <2 x float> %a, <2 x float> %b) {
entry:
  %0 = fdiv <2 x float> %a, %b
  store <2 x float> %0, <2 x float> addrspace(1)* %out
  ret void
}

; R600-CHECK: @fdiv_v4f32
; R600-CHECK-DAG: RECIP_IEEE * T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}
; R600-CHECK-DAG: RECIP_IEEE * T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}
; R600-CHECK-DAG: RECIP_IEEE * T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}
; R600-CHECK-DAG: RECIP_IEEE * T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}
; R600-CHECK-DAG: MUL_IEEE {{\** *}}T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}, PS
; R600-CHECK-DAG: MUL_IEEE {{\** *}}T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}, PS
; R600-CHECK-DAG: MUL_IEEE {{\** *}}T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}, PS
; R600-CHECK-DAG: MUL_IEEE {{\** *}}T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}, PS
; SI-CHECK: @fdiv_v4f32
; SI-CHECK-DAG: V_RCP_F32
; SI-CHECK-DAG: V_MUL_F32
; SI-CHECK-DAG: V_RCP_F32
; SI-CHECK-DAG: V_MUL_F32
; SI-CHECK-DAG: V_RCP_F32
; SI-CHECK-DAG: V_MUL_F32
; SI-CHECK-DAG: V_RCP_F32
; SI-CHECK-DAG: V_MUL_F32
define void @fdiv_v4f32(<4 x float> addrspace(1)* %out, <4 x float> addrspace(1)* %in) {
  %b_ptr = getelementptr <4 x float> addrspace(1)* %in, i32 1
  %a = load <4 x float> addrspace(1) * %in
  %b = load <4 x float> addrspace(1) * %b_ptr
  %result = fdiv <4 x float> %a, %b
  store <4 x float> %result, <4 x float> addrspace(1)* %out
  ret void
}