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clang-p2996/llvm/test/CodeGen/AMDGPU/llvm.sin.f16.ll
Tony 1bc7bfffdb [AMDGPU] Optimize waitcnt insertion for flat memory operations 
Change waitcnt insertion to check the memory operand tokens to see if
flat memory operations access VMEM in the same way it does to check if
accessing LDS. This avoids adding waitcnt for counters for address
spaces that are not accessed.

In addition, only generate the pessimistic waitcnt 0 if a flat memory
operation appears to access both VMEM and LDS.

This benefits flat memory operations that explicitly specify the
address space as GLOBAL or LOCAL.

Differential Revision: https://reviews.llvm.org/D89618
2020-10-20 22:55:12 +00:00

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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-prefixes=GCN,GFX6 %s
; RUN: llc -amdgpu-scalarize-global-loads=false -march=amdgcn -mcpu=fiji -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefixes=GCN,GFX8 %s
; RUN: llc -amdgpu-scalarize-global-loads=false -march=amdgcn -mcpu=gfx900 -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefixes=GCN,GFX9 %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[4:7], s[0:1], 0x9
; GFX6-NEXT: s_mov_b32 s3, 0xf000
; GFX6-NEXT: s_mov_b32 s2, -1
; GFX6-NEXT: s_mov_b32 s10, s2
; GFX6-NEXT: s_mov_b32 s11, s3
; GFX6-NEXT: s_waitcnt lgkmcnt(0)
; GFX6-NEXT: s_mov_b32 s8, s6
; GFX6-NEXT: s_mov_b32 s9, s7
; GFX6-NEXT: buffer_load_ushort v0, off, s[8:11], 0
; GFX6-NEXT: s_mov_b32 s0, s4
; GFX6-NEXT: s_mov_b32 s1, s5
; 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[0:3], 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: s_waitcnt lgkmcnt(0)
; GFX9-NEXT: v_mov_b32_e32 v0, s2
; GFX9-NEXT: v_mov_b32_e32 v1, s3
; GFX9-NEXT: global_load_ushort v0, v[0:1], off
; GFX9-NEXT: v_mov_b32_e32 v1, s1
; GFX9-NEXT: s_waitcnt vmcnt(0)
; GFX9-NEXT: v_mul_f16_e32 v0, 0.15915494, v0
; GFX9-NEXT: v_sin_f16_e32 v2, v0
; GFX9-NEXT: v_mov_b32_e32 v0, s0
; GFX9-NEXT: global_store_short v[0:1], v2, off
; GFX9-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[4:7], s[0:1], 0x9
; GFX6-NEXT: s_mov_b32 s3, 0xf000
; GFX6-NEXT: s_mov_b32 s2, -1
; GFX6-NEXT: s_mov_b32 s10, s2
; GFX6-NEXT: s_mov_b32 s11, s3
; GFX6-NEXT: s_waitcnt lgkmcnt(0)
; GFX6-NEXT: s_mov_b32 s8, s6
; GFX6-NEXT: s_mov_b32 s9, s7
; GFX6-NEXT: buffer_load_dword v0, off, s[8:11], 0
; GFX6-NEXT: s_mov_b32 s0, 0x3e22f983
; GFX6-NEXT: s_mov_b32 s1, s5
; 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, s0, v1
; GFX6-NEXT: v_fract_f32_e32 v1, v1
; GFX6-NEXT: v_mul_f32_e32 v0, s0, 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: s_mov_b32 s0, s4
; 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[0:3], 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: s_waitcnt lgkmcnt(0)
; GFX9-NEXT: v_mov_b32_e32 v0, s2
; GFX9-NEXT: v_mov_b32_e32 v1, s3
; GFX9-NEXT: global_load_dword v0, v[0:1], off
; GFX9-NEXT: v_mov_b32_e32 v1, 0x3118
; GFX9-NEXT: s_waitcnt vmcnt(0)
; GFX9-NEXT: v_mul_f16_e32 v2, 0.15915494, v0
; GFX9-NEXT: v_sin_f16_e32 v2, v2
; GFX9-NEXT: v_mul_f16_sdwa v0, v0, v1 dst_sel:DWORD dst_unused:UNUSED_PAD src0_sel:WORD_1 src1_sel:DWORD
; GFX9-NEXT: v_sin_f16_e32 v3, v0
; GFX9-NEXT: v_mov_b32_e32 v0, s0
; GFX9-NEXT: v_and_b32_e32 v2, 0xffff, v2
; GFX9-NEXT: v_mov_b32_e32 v1, s1
; GFX9-NEXT: v_lshl_or_b32 v2, v3, 16, v2
; GFX9-NEXT: global_store_dword v[0:1], v2, off
; GFX9-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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