xref: /aosp_15_r20/external/llvm/test/CodeGen/AMDGPU/fdiv.f64.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58)

; RUN: llc -march=amdgcn -mcpu=hawaii -verify-machineinstrs < %s | FileCheck -check-prefix=CI -check-prefix=COMMON %s
; RUN: llc -march=amdgcn -mcpu=tahiti -verify-machineinstrs < %s | FileCheck -check-prefix=SI -check-prefix=COMMON %s
; RUN: llc -march=amdgcn -mcpu=tonga -verify-machineinstrs < %s | FileCheck -check-prefix=CI -check-prefix=COMMON %s


; COMMON-LABEL: {{^}}fdiv_f64:
; COMMON-DAG: buffer_load_dwordx2 [[NUM:v\[[0-9]+:[0-9]+\]]], off, {{s\[[0-9]+:[0-9]+\]}}, 0
; COMMON-DAG: buffer_load_dwordx2 [[DEN:v\[[0-9]+:[0-9]+\]]], off, {{s\[[0-9]+:[0-9]+\]}}, 0 offset:8
; CI-DAG: v_div_scale_f64 [[SCALE0:v\[[0-9]+:[0-9]+\]]], {{s\[[0-9]+:[0-9]+\]}}, [[DEN]], [[DEN]], [[NUM]]
; CI-DAG: v_div_scale_f64 [[SCALE1:v\[[0-9]+:[0-9]+\]]], vcc, [[NUM]], [[DEN]], [[NUM]]

; Check for div_scale bug workaround on SI
; SI-DAG: v_div_scale_f64 [[SCALE0:v\[[0-9]+:[0-9]+\]]], {{s\[[0-9]+:[0-9]+\]}}, [[DEN]], [[DEN]], [[NUM]]
; SI-DAG: v_div_scale_f64 [[SCALE1:v\[[0-9]+:[0-9]+\]]], {{s\[[0-9]+:[0-9]+\]}}, [[NUM]], [[DEN]], [[NUM]]

; COMMON-DAG: v_rcp_f64_e32 [[RCP_SCALE0:v\[[0-9]+:[0-9]+\]]], [[SCALE0]]

; SI-DAG: v_cmp_eq_i32_e32 vcc, {{v[0-9]+}}, {{v[0-9]+}}
; SI-DAG: v_cmp_eq_i32_e64 [[CMP0:s\[[0-9]+:[0-9]+\]]], {{v[0-9]+}}, {{v[0-9]+}}
; SI-DAG: s_xor_b64 vcc, [[CMP0]], vcc

; COMMON-DAG: v_fma_f64 [[FMA0:v\[[0-9]+:[0-9]+\]]], -[[SCALE0]], [[RCP_SCALE0]], 1.0
; COMMON-DAG: v_fma_f64 [[FMA1:v\[[0-9]+:[0-9]+\]]], [[RCP_SCALE0]], [[FMA0]], [[RCP_SCALE0]]
; COMMON-DAG: v_fma_f64 [[FMA2:v\[[0-9]+:[0-9]+\]]], -[[SCALE0]], [[FMA1]], 1.0
; COMMON-DAG: v_fma_f64 [[FMA3:v\[[0-9]+:[0-9]+\]]], [[FMA1]], [[FMA2]], [[FMA1]]
; COMMON-DAG: v_mul_f64 [[MUL:v\[[0-9]+:[0-9]+\]]], [[SCALE1]], [[FMA3]]
; COMMON-DAG: v_fma_f64 [[FMA4:v\[[0-9]+:[0-9]+\]]], -[[SCALE0]], [[MUL]], [[SCALE1]]
; COMMON: v_div_fmas_f64 [[FMAS:v\[[0-9]+:[0-9]+\]]], [[FMA4]], [[FMA3]], [[MUL]]
; COMMON: v_div_fixup_f64 [[RESULT:v\[[0-9]+:[0-9]+\]]], [[FMAS]], [[DEN]], [[NUM]]
; COMMON: buffer_store_dwordx2 [[RESULT]]
; COMMON: s_endpgm
define void @fdiv_f64(double addrspace(1)* %out, double addrspace(1)* %in) nounwind {
  %gep.1 = getelementptr double, double addrspace(1)* %in, i32 1
  %num = load volatile double, double addrspace(1)* %in
  %den = load volatile double, double addrspace(1)* %gep.1
  %result = fdiv double %num, %den
  store double %result, double addrspace(1)* %out
  ret void
}

; COMMON-LABEL: {{^}}fdiv_f64_s_v:
define void @fdiv_f64_s_v(double addrspace(1)* %out, double addrspace(1)* %in, double %num) nounwind {
  %den = load double, double addrspace(1)* %in
  %result = fdiv double %num, %den
  store double %result, double addrspace(1)* %out
  ret void
}

; COMMON-LABEL: {{^}}fdiv_f64_v_s:
define void @fdiv_f64_v_s(double addrspace(1)* %out, double addrspace(1)* %in, double %den) nounwind {
  %num = load double, double addrspace(1)* %in
  %result = fdiv double %num, %den
  store double %result, double addrspace(1)* %out
  ret void
}

; COMMON-LABEL: {{^}}fdiv_f64_s_s:
define void @fdiv_f64_s_s(double addrspace(1)* %out, double %num, double %den) nounwind {
  %result = fdiv double %num, %den
  store double %result, double addrspace(1)* %out
  ret void
}

; COMMON-LABEL: {{^}}v_fdiv_v2f64:
define void @v_fdiv_v2f64(<2 x double> addrspace(1)* %out, <2 x double> addrspace(1)* %in) nounwind {
  %gep.1 = getelementptr <2 x double>, <2 x double> addrspace(1)* %in, i32 1
  %num = load <2 x double>, <2 x double> addrspace(1)* %in
  %den = load <2 x double>, <2 x double> addrspace(1)* %gep.1
  %result = fdiv <2 x double> %num, %den
  store <2 x double> %result, <2 x double> addrspace(1)* %out
  ret void
}

; COMMON-LABEL: {{^}}s_fdiv_v2f64:
define void @s_fdiv_v2f64(<2 x double> addrspace(1)* %out, <2 x double> %num, <2 x double> %den) {
  %result = fdiv <2 x double> %num, %den
  store <2 x double> %result, <2 x double> addrspace(1)* %out
  ret void
}

; COMMON-LABEL: {{^}}v_fdiv_v4f64:
define void @v_fdiv_v4f64(<4 x double> addrspace(1)* %out, <4 x double> addrspace(1)* %in) nounwind {
  %gep.1 = getelementptr <4 x double>, <4 x double> addrspace(1)* %in, i32 1
  %num = load <4 x double>, <4 x double> addrspace(1)* %in
  %den = load <4 x double>, <4 x double> addrspace(1)* %gep.1
  %result = fdiv <4 x double> %num, %den
  store <4 x double> %result, <4 x double> addrspace(1)* %out
  ret void
}

; COMMON-LABEL: {{^}}s_fdiv_v4f64:
define void @s_fdiv_v4f64(<4 x double> addrspace(1)* %out, <4 x double> %num, <4 x double> %den) {
  %result = fdiv <4 x double> %num, %den
  store <4 x double> %result, <4 x double> addrspace(1)* %out
  ret void
}