50 lines
1.6 KiB
LLVM
50 lines
1.6 KiB
LLVM
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; RUN: llc -march=amdgcn -mcpu=verde -verify-machineinstrs < %s | FileCheck -check-prefix=GCN -check-prefix=VCCZ-BUG %s
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; RUN: llc -march=amdgcn -mcpu=bonaire -verify-machineinstrs < %s | FileCheck -check-prefix=GCN -check-prefix=VCCZ-BUG %s
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; RUN: llc -march=amdgcn -mcpu=tonga -mattr=-flat-for-global -verify-machineinstrs < %s | FileCheck -check-prefix=GCN %s
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; GCN-FUNC: {{^}}vccz_workaround:
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; GCN: s_load_dword [[REG:s[0-9]+]], s[{{[0-9]+:[0-9]+}}],
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; GCN: v_cmp_neq_f32_e64 {{[^,]*}}, [[REG]], 0{{$}}
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; VCCZ-BUG: s_waitcnt lgkmcnt(0)
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; VCCZ-BUG: s_mov_b64 vcc, vcc
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; GCN-NOT: s_mov_b64 vcc, vcc
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; GCN: s_cbranch_vccnz [[EXIT:[0-9A-Za-z_]+]]
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; GCN: buffer_store_dword
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; GCN: [[EXIT]]:
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; GCN: s_endpgm
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define amdgpu_kernel void @vccz_workaround(i32 addrspace(4)* %in, i32 addrspace(1)* %out, float %cond) {
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entry:
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%cnd = fcmp oeq float 0.0, %cond
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%sgpr = load volatile i32, i32 addrspace(4)* %in
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br i1 %cnd, label %if, label %endif
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if:
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store i32 %sgpr, i32 addrspace(1)* %out
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br label %endif
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endif:
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ret void
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}
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; GCN-FUNC: {{^}}vccz_noworkaround:
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; GCN: v_cmp_neq_f32_e32 vcc, 0, v{{[0-9]+}}
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; GCN-NOT: s_waitcnt lgkmcnt(0)
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; GCN-NOT: s_mov_b64 vcc, vcc
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; GCN: s_cbranch_vccnz [[EXIT:[0-9A-Za-z_]+]]
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; GCN: buffer_store_dword
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; GCN: [[EXIT]]:
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; GCN: s_endpgm
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define amdgpu_kernel void @vccz_noworkaround(float addrspace(1)* %in, float addrspace(1)* %out) {
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entry:
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%vgpr = load volatile float, float addrspace(1)* %in
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%cnd = fcmp oeq float 0.0, %vgpr
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br i1 %cnd, label %if, label %endif
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if:
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store float %vgpr, float addrspace(1)* %out
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br label %endif
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endif:
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ret void
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}
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