34 lines
1.4 KiB
LLVM
34 lines
1.4 KiB
LLVM
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; RUN: opt -mtriple=amdgcn-unknown-amdhsa -mcpu=hawaii -loop-unroll -S < %s | FileCheck %s
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; CHECK-LABEL: @test_unroll_convergent_barrier(
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; CHECK: call void @llvm.amdgcn.s.barrier()
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; CHECK: call void @llvm.amdgcn.s.barrier()
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; CHECK: call void @llvm.amdgcn.s.barrier()
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; CHECK: call void @llvm.amdgcn.s.barrier()
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; CHECK-NOT: br
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define amdgpu_kernel void @test_unroll_convergent_barrier(i32 addrspace(1)* noalias nocapture %out, i32 addrspace(1)* noalias nocapture %in) #0 {
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entry:
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br label %for.body
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for.body: ; preds = %for.body, %entry
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%indvars.iv = phi i32 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
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%sum.02 = phi i32 [ %add, %for.body ], [ 0, %entry ]
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%arrayidx.in = getelementptr inbounds i32, i32 addrspace(1)* %in, i32 %indvars.iv
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%arrayidx.out = getelementptr inbounds i32, i32 addrspace(1)* %out, i32 %indvars.iv
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%load = load i32, i32 addrspace(1)* %arrayidx.in
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call void @llvm.amdgcn.s.barrier() #1
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%add = add i32 %load, %sum.02
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store i32 %add, i32 addrspace(1)* %arrayidx.out
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%indvars.iv.next = add i32 %indvars.iv, 1
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%exitcond = icmp eq i32 %indvars.iv.next, 4
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br i1 %exitcond, label %for.end, label %for.body
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for.end: ; preds = %for.body, %entry
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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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attributes #0 = { nounwind }
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attributes #1 = { nounwind convergent }
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