1 ; RUN: opt -mtriple=amdgcn-unknown-amdhsa -mcpu=hawaii -loop-unroll -S < %s | FileCheck %s 2 3 ; CHECK-LABEL: @test_unroll_convergent_barrier( 4 ; CHECK: call void @llvm.amdgcn.s.barrier() 5 ; CHECK: call void @llvm.amdgcn.s.barrier() 6 ; CHECK: call void @llvm.amdgcn.s.barrier() 7 ; CHECK: call void @llvm.amdgcn.s.barrier() 8 ; CHECK-NOT: br 9 define void @test_unroll_convergent_barrier(i32 addrspace(1)* noalias nocapture %out, i32 addrspace(1)* noalias nocapture %in) #0 { 10 entry: 11 br label %for.body 12 13 for.body: ; preds = %for.body, %entry 14 %indvars.iv = phi i32 [ %indvars.iv.next, %for.body ], [ 0, %entry ] 15 %sum.02 = phi i32 [ %add, %for.body ], [ 0, %entry ] 16 %arrayidx.in = getelementptr inbounds i32, i32 addrspace(1)* %in, i32 %indvars.iv 17 %arrayidx.out = getelementptr inbounds i32, i32 addrspace(1)* %out, i32 %indvars.iv 18 %load = load i32, i32 addrspace(1)* %arrayidx.in 19 call void @llvm.amdgcn.s.barrier() #1 20 %add = add i32 %load, %sum.02 21 store i32 %add, i32 addrspace(1)* %arrayidx.out 22 %indvars.iv.next = add i32 %indvars.iv, 1 23 %exitcond = icmp eq i32 %indvars.iv.next, 4 24 br i1 %exitcond, label %for.end, label %for.body 25 26 for.end: ; preds = %for.body, %entry 27 ret void 28 } 29 30 declare void @llvm.amdgcn.s.barrier() #1 31 32 attributes #0 = { nounwind } 33 attributes #1 = { nounwind convergent } 34
