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831029e78d
computeKnownBits didn't handle fp_to_fp16 to report the high bits as 0. ARM maps the generic node to an instruction that does not modify the high bits of the register, so introduce a target node where the high bits are known 0. llvm-svn: 297873
139 lines
5.3 KiB
LLVM
139 lines
5.3 KiB
LLVM
; RUN: llc -march=amdgcn -verify-machineinstrs -enable-unsafe-fp-math < %s | FileCheck -check-prefix=GCN -check-prefix=SIVI %s
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; RUN: llc -march=amdgcn -mcpu=fiji -mattr=-flat-for-global -verify-machineinstrs -enable-unsafe-fp-math < %s | FileCheck -check-prefix=GCN -check-prefix=SIVI %s
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; RUN: llc -march=amdgcn -mcpu=gfx901 -mattr=-flat-for-global,+fp64-fp16-denormals -verify-machineinstrs -enable-unsafe-fp-math < %s | FileCheck -check-prefix=GCN -check-prefix=GFX9 -check-prefix=GFX9-DENORM %s
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; RUN: llc -march=amdgcn -mcpu=gfx901 -mattr=-flat-for-global,-fp64-fp16-denormals -verify-machineinstrs -enable-unsafe-fp-math < %s | FileCheck -check-prefix=GCN -check-prefix=GFX9 -check-prefix=GFX9-FLUSH %s
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; GCN-LABEL: {{^}}fptrunc_f32_to_f16:
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; GCN: buffer_load_dword v[[A_F32:[0-9]+]]
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; GCN: v_cvt_f16_f32_e32 v[[R_F16:[0-9]+]], v[[A_F32]]
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; GCN: buffer_store_short v[[R_F16]]
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; GCN: s_endpgm
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define void @fptrunc_f32_to_f16(
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half addrspace(1)* %r,
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float addrspace(1)* %a) {
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entry:
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%a.val = load float, float addrspace(1)* %a
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%r.val = fptrunc float %a.val to half
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store half %r.val, half addrspace(1)* %r
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ret void
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}
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; GCN-LABEL: {{^}}fptrunc_f64_to_f16:
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; GCN: buffer_load_dwordx2 v{{\[}}[[A_F64_0:[0-9]+]]:[[A_F64_1:[0-9]+]]{{\]}}
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; GCN: v_cvt_f32_f64_e32 v[[A_F32:[0-9]+]], v{{\[}}[[A_F64_0]]:[[A_F64_1]]{{\]}}
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; GCN: v_cvt_f16_f32_e32 v[[R_F16:[0-9]+]], v[[A_F32]]
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; GCN: buffer_store_short v[[R_F16]]
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; GCN: s_endpgm
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define void @fptrunc_f64_to_f16(
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half addrspace(1)* %r,
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double addrspace(1)* %a) {
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entry:
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%a.val = load double, double addrspace(1)* %a
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%r.val = fptrunc double %a.val to half
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store half %r.val, half addrspace(1)* %r
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ret void
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}
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; GCN-LABEL: {{^}}fptrunc_v2f32_to_v2f16:
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; GCN: buffer_load_dwordx2 v{{\[}}[[A_F32_0:[0-9]+]]:[[A_F32_1:[0-9]+]]{{\]}}
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; GCN-DAG: v_cvt_f16_f32_e32 v[[R_F16_0:[0-9]+]], v[[A_F32_0]]
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; GCN-DAG: v_cvt_f16_f32_e32 v[[R_F16_1:[0-9]+]], v[[A_F32_1]]
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; SIVI-DAG: v_lshlrev_b32_e32 v[[R_F16_HI:[0-9]+]], 16, v[[R_F16_1]]
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; SIVI: v_or_b32_e32 v[[R_V2_F16:[0-9]+]], v[[R_F16_HI]], v[[R_F16_0]]
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; GFX9-FLUSH: v_and_b32_e32 v[[R_F16_LO:[0-9]+]], 0xffff, v[[R_F16_0]]
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; GFX9-FLUSH: v_lshl_or_b32 v[[R_V2_F16:[0-9]+]], v[[R_F16_1]], 16, v[[R_F16_LO]]
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; GFX9-DENORM: v_pack_b32_f16 v[[R_V2_F16:[0-9]+]], v[[R_F16_0]], v[[R_F16_1]]
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; GCN: buffer_store_dword v[[R_V2_F16]]
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; GCN: s_endpgm
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define void @fptrunc_v2f32_to_v2f16(
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<2 x half> addrspace(1)* %r,
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<2 x float> addrspace(1)* %a) {
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entry:
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%a.val = load <2 x float>, <2 x float> addrspace(1)* %a
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%r.val = fptrunc <2 x float> %a.val to <2 x half>
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store <2 x half> %r.val, <2 x half> addrspace(1)* %r
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ret void
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}
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; GCN-LABEL: {{^}}fptrunc_v2f64_to_v2f16:
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; GCN: buffer_load_dwordx4 v{{\[}}[[A_F64_0:[0-9]+]]:[[A_F64_3:[0-9]+]]{{\]}}
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; GCN-DAG: v_cvt_f32_f64_e32 v[[A_F32_0:[0-9]+]], v{{\[}}[[A_F64_0]]:{{[0-9]+}}{{\]}}
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; GCN-DAG: v_cvt_f32_f64_e32 v[[A_F32_1:[0-9]+]], v{{\[}}{{[0-9]+}}:[[A_F64_3]]{{\]}}
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; GCN-DAG: v_cvt_f16_f32_e32 v[[R_F16_0:[0-9]+]], v[[A_F32_0]]
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; GCN-DAG: v_cvt_f16_f32_e32 v[[R_F16_1:[0-9]+]], v[[A_F32_1]]
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; SIVI: v_lshlrev_b32_e32 v[[R_F16_HI:[0-9]+]], 16, v[[R_F16_1]]
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; SIVI: v_or_b32_e32 v[[R_V2_F16:[0-9]+]], v[[R_F16_HI]], v[[R_F16_0]]
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; GFX9-FLUSH: v_and_b32_e32 v[[R_F16_LO:[0-9]+]], 0xffff, v[[R_F16_0]]
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; GFX9-FLUSH: v_lshl_or_b32 v[[R_V2_F16:[0-9]+]], v[[R_F16_1]], 16, v[[R_F16_LO]]
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; GFX9-DENORM: v_pack_b32_f16 v[[R_V2_F16:[0-9]+]], v[[R_F16_0]], v[[R_F16_1]]
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; GCN: buffer_store_dword v[[R_V2_F16]]
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define void @fptrunc_v2f64_to_v2f16(
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<2 x half> addrspace(1)* %r,
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<2 x double> addrspace(1)* %a) {
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entry:
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%a.val = load <2 x double>, <2 x double> addrspace(1)* %a
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%r.val = fptrunc <2 x double> %a.val to <2 x half>
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store <2 x half> %r.val, <2 x half> addrspace(1)* %r
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ret void
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}
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; GCN-LABEL: {{^}}fneg_fptrunc_f32_to_f16:
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; GCN: buffer_load_dword v[[A_F32:[0-9]+]]
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; GCN: v_cvt_f16_f32_e64 v[[R_F16:[0-9]+]], -v[[A_F32]]
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; GCN: buffer_store_short v[[R_F16]]
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; GCN: s_endpgm
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define void @fneg_fptrunc_f32_to_f16(
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half addrspace(1)* %r,
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float addrspace(1)* %a) {
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entry:
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%a.val = load float, float addrspace(1)* %a
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%a.fneg = fsub float -0.0, %a.val
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%r.val = fptrunc float %a.fneg to half
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store half %r.val, half addrspace(1)* %r
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ret void
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}
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; GCN-LABEL: {{^}}fabs_fptrunc_f32_to_f16:
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; GCN: buffer_load_dword v[[A_F32:[0-9]+]]
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; GCN: v_cvt_f16_f32_e64 v[[R_F16:[0-9]+]], |v[[A_F32]]|
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; GCN: buffer_store_short v[[R_F16]]
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; GCN: s_endpgm
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define void @fabs_fptrunc_f32_to_f16(
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half addrspace(1)* %r,
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float addrspace(1)* %a) {
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entry:
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%a.val = load float, float addrspace(1)* %a
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%a.fabs = call float @llvm.fabs.f32(float %a.val)
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%r.val = fptrunc float %a.fabs to half
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store half %r.val, half addrspace(1)* %r
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ret void
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}
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; GCN-LABEL: {{^}}fneg_fabs_fptrunc_f32_to_f16:
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; GCN: buffer_load_dword v[[A_F32:[0-9]+]]
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; GCN: v_cvt_f16_f32_e64 v[[R_F16:[0-9]+]], -|v[[A_F32]]|
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; GCN: buffer_store_short v[[R_F16]]
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; GCN: s_endpgm
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define void @fneg_fabs_fptrunc_f32_to_f16(
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half addrspace(1)* %r,
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float addrspace(1)* %a) {
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entry:
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%a.val = load float, float addrspace(1)* %a
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%a.fabs = call float @llvm.fabs.f32(float %a.val)
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%a.fneg.fabs = fsub float -0.0, %a.fabs
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%r.val = fptrunc float %a.fneg.fabs to half
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store half %r.val, half addrspace(1)* %r
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ret void
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}
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declare float @llvm.fabs.f32(float) #1
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attributes #1 = { nounwind readnone }
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