165 lines
6.8 KiB
LLVM
165 lines
6.8 KiB
LLVM
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; RUN: llc -mtriple=amdgcn--amdhsa -mcpu=kaveri -verify-machineinstrs < %s | FileCheck --check-prefixes=CI,GCN %s
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; RUN: llc -mtriple=amdgcn--amdhsa -mcpu=tonga -verify-machineinstrs < %s | FileCheck --check-prefixes=VI,GFX89,GCN %s
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; RUN: llc -mtriple=amdgcn--amdhsa -mcpu=gfx900 -verify-machineinstrs < %s | FileCheck --check-prefixes=GFX89,GFX9,GCN %s
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; GCN-LABEL: {{^}}fneg_fabs_fadd_f16:
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; CI-DAG: v_cvt_f32_f16_e32
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; CI-DAG: v_cvt_f32_f16_e64 [[CVT_ABS_X:v[0-9]+]], |s{{[0-9]+}}|
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; CI: v_sub_f32_e32 v{{[0-9]+}}, v{{[0-9]+}}, [[CVT_ABS_X]]
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; GFX89-NOT: _and
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; GFX89: v_sub_f16_e64 {{v[0-9]+}}, {{s[0-9]+}}, |{{v[0-9]+}}|
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define amdgpu_kernel void @fneg_fabs_fadd_f16(half addrspace(1)* %out, half %x, half %y) {
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%fabs = call half @llvm.fabs.f16(half %x)
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%fsub = fsub half -0.0, %fabs
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%fadd = fadd half %y, %fsub
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store half %fadd, half addrspace(1)* %out, align 2
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ret void
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}
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; GCN-LABEL: {{^}}fneg_fabs_fmul_f16:
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; CI-DAG: v_cvt_f32_f16_e32
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; CI-DAG: v_cvt_f32_f16_e64 [[CVT_NEG_ABS_X:v[0-9]+]], -|{{s[0-9]+}}|
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; CI: v_mul_f32_e32 {{v[0-9]+}}, {{v[0-9]+}}, [[CVT_NEG_ABS_X]]
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; CI: v_cvt_f16_f32_e32
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; GFX89-NOT: _and
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; GFX89: v_mul_f16_e64 [[MUL:v[0-9]+]], {{s[0-9]+}}, -|{{v[0-9]+}}|
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; GFX89-NOT: [[MUL]]
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; GFX89: {{flat|global}}_store_short v{{.+}}, [[MUL]]
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define amdgpu_kernel void @fneg_fabs_fmul_f16(half addrspace(1)* %out, half %x, half %y) {
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%fabs = call half @llvm.fabs.f16(half %x)
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%fsub = fsub half -0.0, %fabs
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%fmul = fmul half %y, %fsub
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store half %fmul, half addrspace(1)* %out, align 2
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ret void
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}
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; DAGCombiner will transform:
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; (fabs (f16 bitcast (i16 a))) => (f16 bitcast (and (i16 a), 0x7FFFFFFF))
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; unless isFabsFree returns true
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; GCN-LABEL: {{^}}fneg_fabs_free_f16:
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; GCN: {{s_or_b32 s[0-9]+, s[0-9]+, 0x8000|s_bitset1_b32 s[0-9]+, 15}}
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define amdgpu_kernel void @fneg_fabs_free_f16(half addrspace(1)* %out, i16 %in) {
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%bc = bitcast i16 %in to half
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%fabs = call half @llvm.fabs.f16(half %bc)
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%fsub = fsub half -0.0, %fabs
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store half %fsub, half addrspace(1)* %out
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ret void
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}
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; GCN-LABEL: {{^}}fneg_fabs_f16:
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; GCN: {{s_or_b32 s[0-9]+, s[0-9]+, 0x8000|s_bitset1_b32 s[0-9]+, 15}}
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define amdgpu_kernel void @fneg_fabs_f16(half addrspace(1)* %out, half %in) {
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%fabs = call half @llvm.fabs.f16(half %in)
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%fsub = fsub half -0.0, %fabs
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store half %fsub, half addrspace(1)* %out, align 2
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ret void
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}
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; GCN-LABEL: {{^}}v_fneg_fabs_f16:
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; GCN: v_or_b32_e32 v{{[0-9]+}}, 0x8000, v{{[0-9]+}}
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define amdgpu_kernel void @v_fneg_fabs_f16(half addrspace(1)* %out, half addrspace(1)* %in) {
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%val = load half, half addrspace(1)* %in, align 2
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%fabs = call half @llvm.fabs.f16(half %val)
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%fsub = fsub half -0.0, %fabs
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store half %fsub, half addrspace(1)* %out, align 2
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ret void
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}
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; GCN-LABEL: {{^}}s_fneg_fabs_v2f16_non_bc_src:
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; GFX9-DAG: s_load_dword [[VAL:s[0-9]+]]
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; GFX9-DAG: v_mov_b32_e32 [[K:v[0-9]+]], 0x40003c00
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; GFX9: v_pk_add_f16 [[ADD:v[0-9]+]], [[VAL]], [[K]]
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; GFX9: v_or_b32_e32 [[RESULT:v[0-9]+]], 0x80008000, [[ADD]]
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; VI: v_or_b32_e32 v{{[0-9]+}}, 0x80008000, v{{[0-9]+}}
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define amdgpu_kernel void @s_fneg_fabs_v2f16_non_bc_src(<2 x half> addrspace(1)* %out, <2 x half> %in) {
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%add = fadd <2 x half> %in, <half 1.0, half 2.0>
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%fabs = call <2 x half> @llvm.fabs.v2f16(<2 x half> %add)
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%fneg.fabs = fsub <2 x half> <half -0.0, half -0.0>, %fabs
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store <2 x half> %fneg.fabs, <2 x half> addrspace(1)* %out
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ret void
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}
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; FIXME: single bit op
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; Combine turns this into integer op when bitcast source (from load)
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; GCN-LABEL: {{^}}s_fneg_fabs_v2f16_bc_src:
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; GCN: s_or_b32 s{{[0-9]+}}, s{{[0-9]+}}, 0x80008000
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define amdgpu_kernel void @s_fneg_fabs_v2f16_bc_src(<2 x half> addrspace(1)* %out, <2 x half> %in) {
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%fabs = call <2 x half> @llvm.fabs.v2f16(<2 x half> %in)
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%fneg.fabs = fsub <2 x half> <half -0.0, half -0.0>, %fabs
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store <2 x half> %fneg.fabs, <2 x half> addrspace(1)* %out
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ret void
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}
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; GCN-LABEL: {{^}}fneg_fabs_v4f16:
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; GCN: s_mov_b32 [[MASK:s[0-9]+]], 0x80008000
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; GCN: s_or_b32 s{{[0-9]+}}, s{{[0-9]+}}, [[MASK]]
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; GCN: s_or_b32 s{{[0-9]+}}, s{{[0-9]+}}, [[MASK]]
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; GCN: {{flat|global}}_store_dwordx2
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define amdgpu_kernel void @fneg_fabs_v4f16(<4 x half> addrspace(1)* %out, <4 x half> %in) {
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%fabs = call <4 x half> @llvm.fabs.v4f16(<4 x half> %in)
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%fsub = fsub <4 x half> <half -0.0, half -0.0, half -0.0, half -0.0>, %fabs
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store <4 x half> %fsub, <4 x half> addrspace(1)* %out
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ret void
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}
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; GCN-LABEL: {{^}}fold_user_fneg_fabs_v2f16:
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; CI: s_load_dword [[IN:s[0-9]+]]
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; CI: s_lshr_b32
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; CI: v_cvt_f32_f16_e64 v{{[0-9]+}}, |s{{[0-9]+}}|
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; CI: v_cvt_f32_f16_e64 v{{[0-9]+}}, |s{{[0-9]+}}|
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; CI: v_mul_f32_e32 v{{[0-9]+}}, -4.0, v{{[0-9]+}}
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; CI: v_mul_f32_e32 v{{[0-9]+}}, -4.0, v{{[0-9]+}}
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; VI: v_mul_f16_e64 v{{[0-9]+}}, |s{{[0-9]+}}|, -4.0
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; VI: v_mul_f16_sdwa v{{[0-9]+}}, |v{{[0-9]+}}|, v{{[0-9]+}} dst_sel:WORD_1 dst_unused:UNUSED_PAD src0_sel:DWORD src1_sel:DWORD
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; GFX9: s_and_b32 [[ABS:s[0-9]+]], s{{[0-9]+}}, 0x7fff7fff
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; GFX9: v_pk_mul_f16 v{{[0-9]+}}, [[ABS]], -4.0 op_sel_hi:[1,0]
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define amdgpu_kernel void @fold_user_fneg_fabs_v2f16(<2 x half> addrspace(1)* %out, <2 x half> %in) #0 {
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%fabs = call <2 x half> @llvm.fabs.v2f16(<2 x half> %in)
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%fneg.fabs = fsub <2 x half> <half -0.0, half -0.0>, %fabs
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%mul = fmul <2 x half> %fneg.fabs, <half 4.0, half 4.0>
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store <2 x half> %mul, <2 x half> addrspace(1)* %out
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ret void
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}
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; GCN-LABEL: {{^}}s_fneg_multi_use_fabs_v2f16:
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; GFX9: s_and_b32 [[ABS:s[0-9]+]], s{{[0-9]+}}, 0x7fff7fff
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; GFX9: v_mov_b32_e32 [[V_ABS:v[0-9]+]], [[ABS]]
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; GFX9: s_xor_b32 [[NEG:s[0-9]+]], [[ABS]], 0x80008000
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; GFX9-DAG: v_mov_b32_e32 [[V_NEG:v[0-9]+]], [[NEG]]
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; GFX9-DAG: global_store_dword v{{[0-9]+}}, [[V_ABS]], s{{\[[0-9]+:[0-9]+\]}}
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; GFX9: global_store_dword v{{[0-9]+}}, [[V_NEG]], s{{\[[0-9]+:[0-9]+\]}}
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define amdgpu_kernel void @s_fneg_multi_use_fabs_v2f16(<2 x half> addrspace(1)* %out0, <2 x half> addrspace(1)* %out1, <2 x half> %in) {
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%fabs = call <2 x half> @llvm.fabs.v2f16(<2 x half> %in)
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%fneg = fsub <2 x half> <half -0.0, half -0.0>, %fabs
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store <2 x half> %fabs, <2 x half> addrspace(1)* %out0
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store <2 x half> %fneg, <2 x half> addrspace(1)* %out1
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ret void
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}
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; GCN-LABEL: {{^}}s_fneg_multi_use_fabs_foldable_neg_v2f16:
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; GFX9: s_and_b32 [[ABS:s[0-9]+]], s{{[0-9]+}}, 0x7fff7fff
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; GFX9: v_pk_mul_f16 v{{[0-9]+}}, [[ABS]], -4.0 op_sel_hi:[1,0]
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define amdgpu_kernel void @s_fneg_multi_use_fabs_foldable_neg_v2f16(<2 x half> addrspace(1)* %out0, <2 x half> addrspace(1)* %out1, <2 x half> %in) {
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%fabs = call <2 x half> @llvm.fabs.v2f16(<2 x half> %in)
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%fneg = fsub <2 x half> <half -0.0, half -0.0>, %fabs
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%mul = fmul <2 x half> %fneg, <half 4.0, half 4.0>
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store <2 x half> %fabs, <2 x half> addrspace(1)* %out0
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store <2 x half> %mul, <2 x half> addrspace(1)* %out1
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ret void
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}
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declare half @llvm.fabs.f16(half) #1
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declare <2 x half> @llvm.fabs.v2f16(<2 x half>) #1
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declare <4 x half> @llvm.fabs.v4f16(<4 x half>) #1
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attributes #0 = { nounwind }
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attributes #1 = { nounwind readnone }
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