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