| ; RUN: llc -march=amdgcn -verify-machineinstrs -o /dev/null < %s |
| ; RUN: llc -march=amdgcn -mcpu=tonga -verify-machineinstrs -o /dev/null < %s |
| |
| ; The register coalescer introduces a verifier error which later |
| ; results in a crash during scheduling. |
| |
| declare i32 @llvm.amdgcn.workitem.id.x() #0 |
| |
| define void @reg_coalescer_breaks_dead(<2 x i32> addrspace(1)* nocapture readonly %arg, i32 %arg1, i32 %arg2, i32 %arg3) #1 { |
| bb: |
| %id.x = call i32 @llvm.amdgcn.workitem.id.x() |
| %cmp0 = icmp eq i32 %id.x, 0 |
| br i1 %cmp0, label %bb3, label %bb4 |
| |
| bb3: ; preds = %bb |
| %tmp = ashr exact i32 undef, 8 |
| br label %bb6 |
| |
| bb4: ; preds = %bb6, %bb |
| %tmp5 = phi <2 x i32> [ zeroinitializer, %bb ], [ %tmp13, %bb6 ] |
| br i1 undef, label %bb15, label %bb16 |
| |
| bb6: ; preds = %bb6, %bb3 |
| %tmp7 = phi <2 x i32> [ zeroinitializer, %bb3 ], [ %tmp13, %bb6 ] |
| %tmp8 = add nsw i32 0, %arg1 |
| %tmp9 = add nsw i32 %tmp8, 0 |
| %tmp10 = sext i32 %tmp9 to i64 |
| %tmp11 = getelementptr inbounds <2 x i32>, <2 x i32> addrspace(1)* %arg, i64 %tmp10 |
| %tmp12 = load <2 x i32>, <2 x i32> addrspace(1)* %tmp11, align 8 |
| %tmp13 = add <2 x i32> %tmp12, %tmp7 |
| %tmp14 = icmp slt i32 undef, %arg2 |
| br i1 %tmp14, label %bb6, label %bb4 |
| |
| bb15: ; preds = %bb4 |
| store <2 x i32> %tmp5, <2 x i32> addrspace(3)* undef, align 8 |
| br label %bb16 |
| |
| bb16: ; preds = %bb15, %bb4 |
| unreachable |
| } |
| |
| attributes #0 = { nounwind readnone } |
| attributes #1 = { nounwind } |