2017-02-19 02:29:53 +08:00
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; RUN: llc -march=amdgcn -verify-machineinstrs < %s | FileCheck -check-prefix=GCN -check-prefix=GFX8 %s
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; RUN: llc -march=amdgcn -mcpu=gfx900 -verify-machineinstrs < %s | FileCheck -check-prefix=GCN -check-prefix=GFX9 %s
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2016-01-23 05:30:43 +08:00
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; GCN-LABEL: {{^}}test_barrier:
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2017-02-19 02:29:53 +08:00
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; GFX8: buffer_store_dword
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; GFX8: s_waitcnt
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; GFX9: flat_store_dword
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; GFX9-NOT: s_waitcnt
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2016-01-23 05:30:43 +08:00
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; GCN: s_barrier
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2017-03-22 05:39:51 +08:00
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define amdgpu_kernel void @test_barrier(i32 addrspace(1)* %out) #0 {
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2016-01-23 05:30:43 +08:00
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entry:
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2016-02-11 14:02:01 +08:00
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%tmp = call i32 @llvm.amdgcn.workitem.id.x()
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2016-01-23 05:30:43 +08:00
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%tmp1 = getelementptr i32, i32 addrspace(1)* %out, i32 %tmp
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store i32 %tmp, i32 addrspace(1)* %tmp1
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call void @llvm.amdgcn.s.barrier()
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%tmp2 = call i32 @llvm.r600.read.local.size.x()
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%tmp3 = sub i32 %tmp2, 1
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%tmp4 = sub i32 %tmp3, %tmp
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%tmp5 = getelementptr i32, i32 addrspace(1)* %out, i32 %tmp4
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%tmp6 = load i32, i32 addrspace(1)* %tmp5
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store i32 %tmp6, i32 addrspace(1)* %tmp1
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ret void
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}
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declare void @llvm.amdgcn.s.barrier() #1
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2016-02-11 14:02:01 +08:00
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declare i32 @llvm.amdgcn.workitem.id.x() #2
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2016-01-23 05:30:43 +08:00
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declare i32 @llvm.r600.read.local.size.x() #2
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attributes #0 = { nounwind }
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attributes #1 = { convergent nounwind }
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attributes #2 = { nounwind readnone }
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