| Matt Arsenault | 2aed6ca | 2015-12-19 01:46:41 +0000 | [diff] [blame^] | 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.AMDGPU.barrier.global() |
| 5 | ; CHECK: call void @llvm.AMDGPU.barrier.global() |
| 6 | ; CHECK: call void @llvm.AMDGPU.barrier.global() |
| 7 | ; CHECK: call void @llvm.AMDGPU.barrier.global() |
| 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.AMDGPU.barrier.global() #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.AMDGPU.barrier.global() #1 |
| 31 | |
| 32 | attributes #0 = { nounwind } |
| 33 | attributes #1 = { nounwind convergent } |