llvm-project/llvm/test/CodeGen/AMDGPU/rcp-pattern.ll

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; RUN: llc -march=amdgcn -verify-machineinstrs < %s | FileCheck -check-prefix=GCN -check-prefix=FUNC %s
; RUN: llc -march=amdgcn -mcpu=tonga -verify-machineinstrs < %s | FileCheck -check-prefix=GCN -check-prefix=FUNC %s
; RUN: llc -march=r600 -mcpu=cypress -verify-machineinstrs < %s | FileCheck -check-prefix=EG -check-prefix=FUNC %s
; RUN: llc -march=r600 -mcpu=cayman -verify-machineinstrs < %s | FileCheck -check-prefix=EG -check-prefix=FUNC %s
; FUNC-LABEL: {{^}}rcp_pat_f32:
; GCN: s_load_dword [[SRC:s[0-9]+]]
; GCN: v_rcp_f32_e32 [[RCP:v[0-9]+]], [[SRC]]
; GCN: buffer_store_dword [[RCP]]
; EG: RECIP_IEEE
define void @rcp_pat_f32(float addrspace(1)* %out, float %src) #0 {
%rcp = fdiv float 1.0, %src
store float %rcp, float addrspace(1)* %out, align 4
ret void
}
; FUNC-LABEL: {{^}}rcp_ulp25_pat_f32:
; GCN: s_load_dword [[SRC:s[0-9]+]]
; GCN: v_rcp_f32_e32 [[RCP:v[0-9]+]], [[SRC]]
; GCN: buffer_store_dword [[RCP]]
; EG: RECIP_IEEE
define void @rcp_ulp25_pat_f32(float addrspace(1)* %out, float %src) #0 {
%rcp = fdiv float 1.0, %src, !fpmath !0
store float %rcp, float addrspace(1)* %out, align 4
ret void
}
; FUNC-LABEL: {{^}}rcp_fast_ulp25_pat_f32:
; GCN: s_load_dword [[SRC:s[0-9]+]]
; GCN: v_rcp_f32_e32 [[RCP:v[0-9]+]], [[SRC]]
; GCN: buffer_store_dword [[RCP]]
; EG: RECIP_IEEE
define void @rcp_fast_ulp25_pat_f32(float addrspace(1)* %out, float %src) #0 {
%rcp = fdiv fast float 1.0, %src, !fpmath !0
store float %rcp, float addrspace(1)* %out, align 4
ret void
}
; FUNC-LABEL: {{^}}rcp_arcp_ulp25_pat_f32:
; GCN: s_load_dword [[SRC:s[0-9]+]]
; GCN: v_rcp_f32_e32 [[RCP:v[0-9]+]], [[SRC]]
; GCN: buffer_store_dword [[RCP]]
; EG: RECIP_IEEE
define void @rcp_arcp_ulp25_pat_f32(float addrspace(1)* %out, float %src) #0 {
%rcp = fdiv arcp float 1.0, %src, !fpmath !0
store float %rcp, float addrspace(1)* %out, align 4
ret void
}
; FUNC-LABEL: {{^}}rcp_global_fast_ulp25_pat_f32:
; GCN: s_load_dword [[SRC:s[0-9]+]]
; GCN: v_rcp_f32_e32 [[RCP:v[0-9]+]], [[SRC]]
; GCN: buffer_store_dword [[RCP]]
; EG: RECIP_IEEE
define void @rcp_global_fast_ulp25_pat_f32(float addrspace(1)* %out, float %src) #2 {
%rcp = fdiv float 1.0, %src, !fpmath !0
store float %rcp, float addrspace(1)* %out, align 4
ret void
}
; FUNC-LABEL: {{^}}rcp_fabs_pat_f32:
; GCN: s_load_dword [[SRC:s[0-9]+]]
; GCN: v_rcp_f32_e64 [[RCP:v[0-9]+]], |[[SRC]]|
; GCN: buffer_store_dword [[RCP]]
; EG: RECIP_IEEE
define void @rcp_fabs_pat_f32(float addrspace(1)* %out, float %src) #0 {
%src.fabs = call float @llvm.fabs.f32(float %src)
%rcp = fdiv float 1.0, %src.fabs
store float %rcp, float addrspace(1)* %out, align 4
ret void
}
; FUNC-LABEL: {{^}}neg_rcp_pat_f32:
; GCN: s_load_dword [[SRC:s[0-9]+]]
; GCN: v_rcp_f32_e64 [[RCP:v[0-9]+]], -[[SRC]]
; GCN: buffer_store_dword [[RCP]]
; EG: RECIP_IEEE
define void @neg_rcp_pat_f32(float addrspace(1)* %out, float %src) #0 {
%rcp = fdiv float -1.0, %src
store float %rcp, float addrspace(1)* %out, align 4
ret void
}
; FUNC-LABEL: {{^}}rcp_fabs_fneg_pat_f32:
; GCN: s_load_dword [[SRC:s[0-9]+]]
; GCN: v_rcp_f32_e64 [[RCP:v[0-9]+]], -|[[SRC]]|
; GCN: buffer_store_dword [[RCP]]
define void @rcp_fabs_fneg_pat_f32(float addrspace(1)* %out, float %src) #0 {
%src.fabs = call float @llvm.fabs.f32(float %src)
%src.fabs.fneg = fsub float -0.0, %src.fabs
%rcp = fdiv float 1.0, %src.fabs.fneg
store float %rcp, float addrspace(1)* %out, align 4
ret void
}
; FUNC-LABEL: {{^}}rcp_fabs_fneg_pat_multi_use_f32:
; GCN: s_load_dword [[SRC:s[0-9]+]]
; GCN: v_rcp_f32_e64 [[RCP:v[0-9]+]], -|[[SRC]]|
; GCN: v_mul_f32_e64 [[MUL:v[0-9]+]], [[SRC]], -|[[SRC]]|
; GCN: buffer_store_dword [[RCP]]
; GCN: buffer_store_dword [[MUL]]
define void @rcp_fabs_fneg_pat_multi_use_f32(float addrspace(1)* %out, float %src) #0 {
%src.fabs = call float @llvm.fabs.f32(float %src)
%src.fabs.fneg = fsub float -0.0, %src.fabs
%rcp = fdiv float 1.0, %src.fabs.fneg
store volatile float %rcp, float addrspace(1)* %out, align 4
%other = fmul float %src, %src.fabs.fneg
store volatile float %other, float addrspace(1)* %out, align 4
ret void
}
declare float @llvm.fabs.f32(float) #1
declare float @llvm.sqrt.f32(float) #1
attributes #0 = { nounwind "unsafe-fp-math"="false" }
attributes #1 = { nounwind readnone }
attributes #2 = { nounwind "unsafe-fp-math"="true" }
!0 = !{float 2.500000e+00}