1 ; RUN: llc -march=amdgcn -verify-machineinstrs -disable-block-placement < %s | FileCheck %s
3 ; Check that invariant compare is hoisted out of the loop.
4 ; At the same time condition shall not be serialized into a VGPR and deserialized later
5 ; using another v_cmp + v_cndmask, but used directly in s_and_saveexec_b64.
7 ; CHECK: v_cmp_{{..}}_u32_e{{32|64}} [[COND:s\[[0-9]+:[0-9]+\]|vcc]]
10 ; CHECK_NOT: v_cndmask
11 ; CHECK: s_and_saveexec_b64 s[{{[[0-9]+:[0-9]+}}], [[COND]]
14 define amdgpu_kernel void @hoist_cond(float addrspace(1)* nocapture %arg, float addrspace(1)* noalias nocapture readonly %arg1, i32 %arg3, i32 %arg4) {
16 %tmp = tail call i32 @llvm.amdgcn.workitem.id.x() #0
17 %tmp5 = icmp ult i32 %tmp, %arg3
20 bb1: ; preds = %bb3, %bb
21 %tmp7 = phi i32 [ %arg4, %bb ], [ %tmp16, %bb3 ]
22 %tmp8 = phi float [ 0.000000e+00, %bb ], [ %tmp15, %bb3 ]
23 br i1 %tmp5, label %bb2, label %bb3
26 %tmp10 = zext i32 %tmp7 to i64
27 %tmp11 = getelementptr inbounds float, float addrspace(1)* %arg1, i64 %tmp10
28 %tmp12 = load float, float addrspace(1)* %tmp11, align 4
31 bb3: ; preds = %bb2, %bb1
32 %tmp14 = phi float [ %tmp12, %bb2 ], [ 0.000000e+00, %bb1 ]
33 %tmp15 = fadd float %tmp8, %tmp14
34 %tmp16 = add i32 %tmp7, -1
35 %tmp17 = icmp eq i32 %tmp16, 0
36 br i1 %tmp17, label %bb4, label %bb1
39 store float %tmp15, float addrspace(1)* %arg, align 4
43 ; Function Attrs: nounwind readnone
44 declare i32 @llvm.amdgcn.workitem.id.x() #0
46 attributes #0 = { nounwind readnone }