1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2; RUN: llc -mtriple=amdgcn-amd-amdhsa -greedy-reverse-local-assignment=0 -mcpu=gfx900 < %s | FileCheck -check-prefixes=FORWARDXNACK %s 3; RUN: llc -mtriple=amdgcn-amd-amdhsa -greedy-reverse-local-assignment=1 -mcpu=gfx900 < %s | FileCheck -check-prefixes=REVERSEXNACK %s 4 5; RUN: llc -mtriple=amdgcn-amd-amdhsa -greedy-reverse-local-assignment=0 -mcpu=gfx900 -mattr=-xnack < %s | FileCheck -check-prefix=NOXNACK %s 6; RUN: llc -mtriple=amdgcn-amd-amdhsa -greedy-reverse-local-assignment=1 -mcpu=gfx900 -mattr=-xnack < %s | FileCheck -check-prefix=NOXNACK %s 7 8; Test the change in the behavior of the allocator with 9; -greedy-reverse-local-reassignment enabled. This case shows a 10; regression with it enabled if xnack is enabled. 11 12; The outgoing return physical register copies strongly hint the 13; output registers to use for the load return values, and end up 14; taking precedence over the copies from the incoming values with 15; reverse order. With the kills inserted to artifically extend the 16; pointer live ranges to hint the soft clause, we get worse 17; allocation and need the extra copies before the loads. 18define <4 x half> @shuffle_v4f16_234u(ptr addrspace(1) %arg0, ptr addrspace(1) %arg1) { 19; FORWARDXNACK-LABEL: shuffle_v4f16_234u: 20; FORWARDXNACK: ; %bb.0: 21; FORWARDXNACK-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0) 22; FORWARDXNACK-NEXT: global_load_dword v6, v[0:1], off offset:4 23; FORWARDXNACK-NEXT: global_load_dwordx2 v[4:5], v[2:3], off 24; FORWARDXNACK-NEXT: s_waitcnt vmcnt(1) 25; FORWARDXNACK-NEXT: v_mov_b32_e32 v0, v6 26; FORWARDXNACK-NEXT: s_waitcnt vmcnt(0) 27; FORWARDXNACK-NEXT: v_mov_b32_e32 v1, v4 28; FORWARDXNACK-NEXT: s_setpc_b64 s[30:31] 29; 30; REVERSEXNACK-LABEL: shuffle_v4f16_234u: 31; REVERSEXNACK: ; %bb.0: 32; REVERSEXNACK-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0) 33; REVERSEXNACK-NEXT: v_mov_b32_e32 v6, v1 34; REVERSEXNACK-NEXT: v_mov_b32_e32 v5, v0 35; REVERSEXNACK-NEXT: v_mov_b32_e32 v4, v3 36; REVERSEXNACK-NEXT: v_mov_b32_e32 v3, v2 37; REVERSEXNACK-NEXT: global_load_dword v0, v[5:6], off offset:4 38; REVERSEXNACK-NEXT: global_load_dwordx2 v[1:2], v[3:4], off 39; REVERSEXNACK-NEXT: s_waitcnt vmcnt(0) 40; REVERSEXNACK-NEXT: s_setpc_b64 s[30:31] 41; 42; NOXNACK-LABEL: shuffle_v4f16_234u: 43; NOXNACK: ; %bb.0: 44; NOXNACK-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0) 45; NOXNACK-NEXT: global_load_dword v0, v[0:1], off offset:4 46; NOXNACK-NEXT: global_load_dwordx2 v[1:2], v[2:3], off 47; NOXNACK-NEXT: s_waitcnt vmcnt(0) 48; NOXNACK-NEXT: s_setpc_b64 s[30:31] 49 %val0 = load <4 x half>, ptr addrspace(1) %arg0 50 %val1 = load <4 x half>, ptr addrspace(1) %arg1 51 %shuffle = shufflevector <4 x half> %val0, <4 x half> %val1, <4 x i32> <i32 2, i32 3, i32 4, i32 undef> 52 ret <4 x half> %shuffle 53} 54