| ; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -o - %s | FileCheck -check-prefix=GCN %s |
| |
| ; Make sure there's no assertion when trying to report the resource |
| ; usage for a function which becomes dead during codegen. |
| |
| @gv.fptr0 = external hidden unnamed_addr addrspace(4) constant void()*, align 4 |
| |
| ; GCN-LABEL: unreachable: |
| ; Function info: |
| ; codeLenInByte = 4 |
| define internal fastcc void @unreachable() { |
| %fptr = load void()*, void()* addrspace(4)* @gv.fptr0 |
| call void %fptr() |
| unreachable |
| } |
| |
| |
| ; GCN-LABEL: entry: |
| ; GCN-NOT: s_swappc_b64 |
| ; GCN: s_endpgm |
| |
| ; GCN: .amdhsa_private_segment_fixed_size 0 |
| ; GCN: .amdhsa_uses_dynamic_stack 0 |
| define amdgpu_kernel void @entry() { |
| bb0: |
| br i1 false, label %bb1, label %bb2 |
| |
| bb1: |
| tail call fastcc void @unreachable() |
| unreachable |
| |
| bb2: |
| ret void |
| } |