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clang-p2996/llvm/test/CodeGen/AMDGPU/llvm.sin.f16.ll
Austin Kerbow da067ed569 [AMDGPU] Set most sched model resource's BufferSize to one 
Using a BufferSize of one for memory ProcResources will result in better
ILP since it more accurately models the dependencies between memory ops
and their consumers on an in-order processor. After this change, the
scheduler will treat the data edges from loads as blocking so that
stalls are guaranteed when waiting for data to be retreaved from memory.
Since we don't actually track waitcnt here, this should do a better job
at modeling their behavior.

Practically, this means that the scheduler will trigger the 'STALL'
heuristic more often.

This type of change needs to be evaluated experimentally. Preliminary
results are positive.

Fixes: SWDEV-282962

Reviewed By: rampitec

Differential Revision: https://reviews.llvm.org/D114777
2021-12-01 22:31:28 -08:00

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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -amdgpu-scalarize-global-loads=false -march=amdgcn -mcpu=tahiti -verify-machineinstrs < %s | FileCheck -enable-var-scope --check-prefix=GFX6 %s
; RUN: llc -amdgpu-scalarize-global-loads=false -march=amdgcn -mcpu=fiji -verify-machineinstrs < %s | FileCheck -enable-var-scope --check-prefix=GFX8 %s
; RUN: llc -amdgpu-scalarize-global-loads=false -march=amdgcn -mcpu=gfx900 -verify-machineinstrs < %s | FileCheck -enable-var-scope --check-prefix=GFX9 %s
; RUN: llc -amdgpu-scalarize-global-loads=false -march=amdgcn -mcpu=gfx1010 -verify-machineinstrs < %s | FileCheck -enable-var-scope --check-prefix=GFX10 %s
define amdgpu_kernel void @sin_f16(half addrspace(1)* %r, half addrspace(1)* %a) {
; GFX6-LABEL: sin_f16:
; GFX6: ; %bb.0:
; GFX6-NEXT: s_load_dwordx4 s[0:3], s[0:1], 0x9
; GFX6-NEXT: s_mov_b32 s7, 0xf000
; GFX6-NEXT: s_mov_b32 s6, -1
; GFX6-NEXT: s_mov_b32 s10, s6
; GFX6-NEXT: s_mov_b32 s11, s7
; GFX6-NEXT: s_waitcnt lgkmcnt(0)
; GFX6-NEXT: s_mov_b32 s8, s2
; GFX6-NEXT: s_mov_b32 s9, s3
; GFX6-NEXT: buffer_load_ushort v0, off, s[8:11], 0
; GFX6-NEXT: s_mov_b32 s4, s0
; GFX6-NEXT: s_mov_b32 s5, s1
; GFX6-NEXT: s_waitcnt vmcnt(0)
; GFX6-NEXT: v_cvt_f32_f16_e32 v0, v0
; GFX6-NEXT: v_mul_f32_e32 v0, 0x3e22f983, v0
; GFX6-NEXT: v_fract_f32_e32 v0, v0
; GFX6-NEXT: v_sin_f32_e32 v0, v0
; GFX6-NEXT: v_cvt_f16_f32_e32 v0, v0
; GFX6-NEXT: buffer_store_short v0, off, s[4:7], 0
; GFX6-NEXT: s_endpgm
;
; GFX8-LABEL: sin_f16:
; GFX8: ; %bb.0:
; GFX8-NEXT: s_load_dwordx4 s[0:3], s[0:1], 0x24
; GFX8-NEXT: s_waitcnt lgkmcnt(0)
; GFX8-NEXT: v_mov_b32_e32 v0, s2
; GFX8-NEXT: v_mov_b32_e32 v1, s3
; GFX8-NEXT: flat_load_ushort v0, v[0:1]
; GFX8-NEXT: v_mov_b32_e32 v1, s1
; GFX8-NEXT: s_waitcnt vmcnt(0)
; GFX8-NEXT: v_mul_f16_e32 v0, 0.15915494, v0
; GFX8-NEXT: v_fract_f16_e32 v0, v0
; GFX8-NEXT: v_sin_f16_e32 v2, v0
; GFX8-NEXT: v_mov_b32_e32 v0, s0
; GFX8-NEXT: flat_store_short v[0:1], v2
; GFX8-NEXT: s_endpgm
;
; GFX9-LABEL: sin_f16:
; GFX9: ; %bb.0:
; GFX9-NEXT: s_load_dwordx4 s[0:3], s[0:1], 0x24
; GFX9-NEXT: v_mov_b32_e32 v0, 0
; GFX9-NEXT: s_waitcnt lgkmcnt(0)
; GFX9-NEXT: global_load_ushort v1, v0, s[2:3]
; GFX9-NEXT: s_waitcnt vmcnt(0)
; GFX9-NEXT: v_mul_f16_e32 v1, 0.15915494, v1
; GFX9-NEXT: v_sin_f16_e32 v1, v1
; GFX9-NEXT: global_store_short v0, v1, s[0:1]
; GFX9-NEXT: s_endpgm
;
; GFX10-LABEL: sin_f16:
; GFX10: ; %bb.0:
; GFX10-NEXT: s_load_dwordx4 s[0:3], s[0:1], 0x24
; GFX10-NEXT: v_mov_b32_e32 v0, 0
; GFX10-NEXT: s_waitcnt lgkmcnt(0)
; GFX10-NEXT: global_load_ushort v1, v0, s[2:3]
; GFX10-NEXT: s_waitcnt vmcnt(0)
; GFX10-NEXT: v_mul_f16_e32 v1, 0.15915494, v1
; GFX10-NEXT: v_sin_f16_e32 v1, v1
; GFX10-NEXT: global_store_short v0, v1, s[0:1]
; GFX10-NEXT: s_endpgm
%a.val = load half, half addrspace(1)* %a
%r.val = call half @llvm.sin.f16(half %a.val)
store half %r.val, half addrspace(1)* %r
ret void
}
define amdgpu_kernel void @sin_v2f16(<2 x half> addrspace(1)* %r, <2 x half> addrspace(1)* %a) {
; GFX6-LABEL: sin_v2f16:
; GFX6: ; %bb.0:
; GFX6-NEXT: s_load_dwordx4 s[0:3], s[0:1], 0x9
; GFX6-NEXT: s_mov_b32 s7, 0xf000
; GFX6-NEXT: s_mov_b32 s6, -1
; GFX6-NEXT: s_mov_b32 s10, s6
; GFX6-NEXT: s_mov_b32 s11, s7
; GFX6-NEXT: s_waitcnt lgkmcnt(0)
; GFX6-NEXT: s_mov_b32 s8, s2
; GFX6-NEXT: s_mov_b32 s9, s3
; GFX6-NEXT: buffer_load_dword v0, off, s[8:11], 0
; GFX6-NEXT: s_mov_b32 s2, 0x3e22f983
; GFX6-NEXT: s_mov_b32 s4, s0
; GFX6-NEXT: s_mov_b32 s5, s1
; GFX6-NEXT: s_waitcnt vmcnt(0)
; GFX6-NEXT: v_cvt_f32_f16_e32 v1, v0
; GFX6-NEXT: v_lshrrev_b32_e32 v0, 16, v0
; GFX6-NEXT: v_cvt_f32_f16_e32 v0, v0
; GFX6-NEXT: v_mul_f32_e32 v1, s2, v1
; GFX6-NEXT: v_fract_f32_e32 v1, v1
; GFX6-NEXT: v_mul_f32_e32 v0, s2, v0
; GFX6-NEXT: v_fract_f32_e32 v0, v0
; GFX6-NEXT: v_sin_f32_e32 v0, v0
; GFX6-NEXT: v_sin_f32_e32 v1, v1
; GFX6-NEXT: v_cvt_f16_f32_e32 v0, v0
; GFX6-NEXT: v_cvt_f16_f32_e32 v1, v1
; GFX6-NEXT: v_lshlrev_b32_e32 v0, 16, v0
; GFX6-NEXT: v_or_b32_e32 v0, v1, v0
; GFX6-NEXT: buffer_store_dword v0, off, s[4:7], 0
; GFX6-NEXT: s_endpgm
;
; GFX8-LABEL: sin_v2f16:
; GFX8: ; %bb.0:
; GFX8-NEXT: s_load_dwordx4 s[0:3], s[0:1], 0x24
; GFX8-NEXT: s_waitcnt lgkmcnt(0)
; GFX8-NEXT: v_mov_b32_e32 v0, s2
; GFX8-NEXT: v_mov_b32_e32 v1, s3
; GFX8-NEXT: flat_load_dword v0, v[0:1]
; GFX8-NEXT: v_mov_b32_e32 v1, 0x3118
; GFX8-NEXT: s_waitcnt vmcnt(0)
; GFX8-NEXT: v_mul_f16_sdwa v1, v0, v1 dst_sel:DWORD dst_unused:UNUSED_PAD src0_sel:WORD_1 src1_sel:DWORD
; GFX8-NEXT: v_mul_f16_e32 v0, 0.15915494, v0
; GFX8-NEXT: v_fract_f16_e32 v1, v1
; GFX8-NEXT: v_fract_f16_e32 v0, v0
; GFX8-NEXT: v_sin_f16_sdwa v2, v1 dst_sel:WORD_1 dst_unused:UNUSED_PAD src0_sel:DWORD
; GFX8-NEXT: v_sin_f16_e32 v3, v0
; GFX8-NEXT: v_mov_b32_e32 v0, s0
; GFX8-NEXT: v_mov_b32_e32 v1, s1
; GFX8-NEXT: v_or_b32_e32 v2, v3, v2
; GFX8-NEXT: flat_store_dword v[0:1], v2
; GFX8-NEXT: s_endpgm
;
; GFX9-LABEL: sin_v2f16:
; GFX9: ; %bb.0:
; GFX9-NEXT: s_load_dwordx4 s[0:3], s[0:1], 0x24
; GFX9-NEXT: v_mov_b32_e32 v0, 0
; GFX9-NEXT: v_mov_b32_e32 v2, 0x3118
; GFX9-NEXT: s_waitcnt lgkmcnt(0)
; GFX9-NEXT: global_load_dword v1, v0, s[2:3]
; GFX9-NEXT: s_waitcnt vmcnt(0)
; GFX9-NEXT: v_mul_f16_e32 v3, 0.15915494, v1
; GFX9-NEXT: v_mul_f16_sdwa v1, v1, v2 dst_sel:DWORD dst_unused:UNUSED_PAD src0_sel:WORD_1 src1_sel:DWORD
; GFX9-NEXT: v_sin_f16_e32 v2, v3
; GFX9-NEXT: v_sin_f16_e32 v1, v1
; GFX9-NEXT: v_pack_b32_f16 v1, v2, v1
; GFX9-NEXT: global_store_dword v0, v1, s[0:1]
; GFX9-NEXT: s_endpgm
;
; GFX10-LABEL: sin_v2f16:
; GFX10: ; %bb.0:
; GFX10-NEXT: s_load_dwordx4 s[0:3], s[0:1], 0x24
; GFX10-NEXT: v_mov_b32_e32 v0, 0
; GFX10-NEXT: v_mov_b32_e32 v2, 0x3118
; GFX10-NEXT: s_waitcnt lgkmcnt(0)
; GFX10-NEXT: global_load_dword v1, v0, s[2:3]
; GFX10-NEXT: s_waitcnt vmcnt(0)
; GFX10-NEXT: v_mul_f16_e32 v3, 0.15915494, v1
; GFX10-NEXT: v_mul_f16_sdwa v1, v1, v2 dst_sel:DWORD dst_unused:UNUSED_PAD src0_sel:WORD_1 src1_sel:DWORD
; GFX10-NEXT: v_sin_f16_e32 v2, v3
; GFX10-NEXT: v_sin_f16_e32 v1, v1
; GFX10-NEXT: v_pack_b32_f16 v1, v2, v1
; GFX10-NEXT: global_store_dword v0, v1, s[0:1]
; GFX10-NEXT: s_endpgm
%a.val = load <2 x half>, <2 x half> addrspace(1)* %a
%r.val = call <2 x half> @llvm.sin.v2f16(<2 x half> %a.val)
store <2 x half> %r.val, <2 x half> addrspace(1)* %r
ret void
}
declare half @llvm.sin.f16(half %a)
declare <2 x half> @llvm.sin.v2f16(<2 x half> %a)
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