1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 ; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -stress-regalloc=4 -o - %s | FileCheck %s
4 ; Make sure we can rematerialize split 64-bit constants (which
5 ; MachineLICM hoisted out of the loop) and avoid spilling inside the
8 ; MachineLICM originally believed the constant materializes to be
9 ; rematerializable, but the lowered REG_SEQUENCE uses they coalesece
10 ; into were not. The InlineSpiller also did not recognize redundant
11 ; spills inside the loop, so we would repeatedly reload the same
14 define amdgpu_kernel void @_Z6kernelILi4000ELi1EEvPd(ptr addrspace(1) %x.coerce) {
15 ; CHECK-LABEL: _Z6kernelILi4000ELi1EEvPd:
16 ; CHECK: ; %bb.0: ; %entry
17 ; CHECK-NEXT: s_mov_b64 s[0:1], 0
18 ; CHECK-NEXT: s_load_dword s2, s[0:1], 0x0
19 ; CHECK-NEXT: s_load_dwordx2 s[6:7], s[0:1], 0x0
20 ; CHECK-NEXT: s_mov_b32 s4, 0
21 ; CHECK-NEXT: s_mov_b32 s0, 0
22 ; CHECK-NEXT: s_mov_b32 s5, 0x40280000
23 ; CHECK-NEXT: s_waitcnt lgkmcnt(0)
24 ; CHECK-NEXT: s_mov_b32 s1, s2
25 ; CHECK-NEXT: s_mov_b32 s2, 0
26 ; CHECK-NEXT: v_mov_b32_e32 v0, s6
27 ; CHECK-NEXT: s_mov_b32 s3, 0x40260000
28 ; CHECK-NEXT: v_mov_b32_e32 v1, s7
29 ; CHECK-NEXT: .LBB0_1: ; %for.cond4.preheader
30 ; CHECK-NEXT: ; =>This Inner Loop Header: Depth=1
31 ; CHECK-NEXT: v_add_f64 v[0:1], v[0:1], 0
32 ; CHECK-NEXT: s_mov_b32 s6, 0
33 ; CHECK-NEXT: s_mov_b32 s7, 0x40140000
34 ; CHECK-NEXT: s_add_i32 s0, s0, s1
35 ; CHECK-NEXT: s_cmpk_lt_i32 s0, 0xa00
36 ; CHECK-NEXT: v_add_f64 v[0:1], v[0:1], s[6:7]
37 ; CHECK-NEXT: s_mov_b32 s6, 0
38 ; CHECK-NEXT: s_mov_b32 s7, 0x40180000
39 ; CHECK-NEXT: v_add_f64 v[0:1], v[0:1], s[6:7]
40 ; CHECK-NEXT: s_mov_b32 s6, 0
41 ; CHECK-NEXT: s_mov_b32 s7, 0x401c0000
42 ; CHECK-NEXT: v_add_f64 v[0:1], v[0:1], s[6:7]
43 ; CHECK-NEXT: s_mov_b32 s6, 0
44 ; CHECK-NEXT: s_mov_b32 s7, 0x40220000
45 ; CHECK-NEXT: v_add_f64 v[0:1], v[0:1], s[6:7]
46 ; CHECK-NEXT: s_mov_b32 s6, 0
47 ; CHECK-NEXT: s_mov_b32 s7, 0x40240000
48 ; CHECK-NEXT: v_add_f64 v[0:1], v[0:1], s[6:7]
49 ; CHECK-NEXT: v_add_f64 v[0:1], v[0:1], s[2:3]
50 ; CHECK-NEXT: v_add_f64 v[0:1], v[0:1], s[4:5]
51 ; CHECK-NEXT: s_cbranch_scc1 .LBB0_1
52 ; CHECK-NEXT: ; %bb.2: ; %for.cond.cleanup.loopexit
53 ; CHECK-NEXT: v_mov_b32_e32 v2, 0
54 ; CHECK-NEXT: v_mov_b32_e32 v3, 0
55 ; CHECK-NEXT: global_store_dwordx2 v[2:3], v[0:1], off
56 ; CHECK-NEXT: s_endpgm
58 %0 = load i32, ptr addrspace(4) null, align 4
59 %cmp6 = icmp slt i32 0, 2560
60 br i1 %cmp6, label %for.cond4.preheader, label %for.cond.cleanup
62 for.cond4.preheader: ; preds = %for.cond4.preheader, %entry
63 %idx.07 = phi i32 [ %add13, %for.cond4.preheader ], [ 0, %entry ]
64 %arrayidx.promoted = load double, ptr addrspace(1) null, align 8
65 %add9 = fadd contract double %arrayidx.promoted, 0.000000e+00
66 %add9.1 = fadd contract double %add9, 5.000000e+00
67 %add9.2 = fadd contract double %add9.1, 6.000000e+00
68 %add9.3 = fadd contract double %add9.2, 7.000000e+00
69 %add9.4 = fadd contract double %add9.3, 9.000000e+00
70 %add9.5 = fadd contract double %add9.4, 1.000000e+01
71 %add9.6 = fadd contract double %add9.5, 1.100000e+01
72 %add9.7 = fadd contract double %add9.6, 1.200000e+01
73 store double %add9.7, ptr addrspace(1) null, align 8
74 %add13 = add i32 %idx.07, %0
75 %cmp = icmp slt i32 %add13, 2560
76 br i1 %cmp, label %for.cond4.preheader, label %for.cond.cleanup
78 for.cond.cleanup: ; preds = %for.cond4.preheader, %entry
82 declare i32 @llvm.amdgcn.workitem.id.x() #0
83 declare i32 @llvm.amdgcn.workgroup.id.x() #0
84 declare align 4 ptr addrspace(4) @llvm.amdgcn.dispatch.ptr() #0
86 attributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }