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19 lines
610 B
19 lines
610 B
4 months ago
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; RUN: llc -march=amdgcn -mcpu=fiji -mattr=-flat-for-global -verify-machineinstrs < %s | FileCheck -check-prefix=GCN -check-prefix=VI %s
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declare half @llvm.amdgcn.rsq.f16(half %a)
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; GCN-LABEL: {{^}}rsq_f16
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; GCN: buffer_load_ushort v[[A_F16:[0-9]+]]
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; VI: v_rsq_f16_e32 v[[R_F16:[0-9]+]], v[[A_F16]]
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; GCN: buffer_store_short v[[R_F16]]
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; GCN: s_endpgm
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define amdgpu_kernel void @rsq_f16(
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half addrspace(1)* %r,
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half addrspace(1)* %a) {
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entry:
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%a.val = load half, half addrspace(1)* %a
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%r.val = call half @llvm.amdgcn.rsq.f16(half %a.val)
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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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