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[AMDGPU] Support SCC on buffer atomics

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Differential Revision: https://reviews.llvm.org/D98731
This commit is contained in:
Stanislav Mekhanoshin 2021-03-16 11:57:45 -07:00
parent 90896be0cc
commit d56387770d
4 changed files with 35 additions and 10 deletions
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23
lib/Target/AMDGPU/BUFInstructions.td
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@ -679,7 +679,7 @@ class MUBUF_Atomic_Pseudo<string opName,
let has_glc = 0;
let has_dlc = 0;
let has_tfe = 0;
let has_sccb = 0;
let has_sccb = 1;
let maybeAtomic = 1;
let AsmMatchConverter = "cvtMubufAtomic";
}
@ -2259,7 +2259,8 @@ defm TBUFFER_STORE_FORMAT_XYZW : MTBUF_Real_AllAddr_gfx6_gfx7_gfx10<0x007>;
// GFX8, GFX9 (VI).
//===----------------------------------------------------------------------===//
class MUBUF_Real_Base_vi <bits<7> op, MUBUF_Pseudo ps, int Enc> :
class MUBUF_Real_Base_vi <bits<7> op, MUBUF_Pseudo ps, int Enc,
bit has_sccb = ps.has_sccb> :
MUBUF_Real<ps>,
Enc64,
SIMCInstr<ps.PseudoInstr, Enc>,
@ -2270,7 +2271,7 @@ class MUBUF_Real_Base_vi <bits<7> op, MUBUF_Pseudo ps, int Enc> :
let Inst{12} = ps.offen;
let Inst{13} = ps.idxen;
let Inst{14} = !if(ps.has_glc, cpol{CPolBit.GLC}, ps.glc_value);
let Inst{15} = !if(ps.has_sccb, cpol{CPolBit.SCC}, ps.sccb_value);
let Inst{15} = !if(has_sccb, cpol{CPolBit.SCC}, ps.sccb_value);
let Inst{16} = ps.lds;
let Inst{17} = !if(ps.has_slc, cpol{CPolBit.SLC}, ?);
let Inst{24-18} = op;
@ -2281,26 +2282,28 @@ class MUBUF_Real_Base_vi <bits<7> op, MUBUF_Pseudo ps, int Enc> :
let Inst{63-56} = !if(ps.has_soffset, soffset, ?);
}
class MUBUF_Real_vi <bits<7> op, MUBUF_Pseudo ps> :
MUBUF_Real_Base_vi<op, ps, SIEncodingFamily.VI> {
class MUBUF_Real_vi <bits<7> op, MUBUF_Pseudo ps, bit has_sccb = ps.has_sccb> :
MUBUF_Real_Base_vi<op, ps, SIEncodingFamily.VI, has_sccb> {
let AssemblerPredicate = isGFX8GFX9NotGFX90A;
let DecoderNamespace = "GFX8";
let Inst{55} = !if(ps.has_tfe, tfe, ?);
}
class MUBUF_Real_gfx90a <bits<7> op, MUBUF_Pseudo ps> :
MUBUF_Real_Base_vi<op, ps, SIEncodingFamily.GFX90A> {
class MUBUF_Real_gfx90a <bits<7> op, MUBUF_Pseudo ps,
bit has_sccb = ps.has_sccb> :
MUBUF_Real_Base_vi<op, ps, SIEncodingFamily.GFX90A, has_sccb> {
let AssemblerPredicate = isGFX90APlus;
let DecoderNamespace = "GFX90A";
let AsmString = ps.Mnemonic # !subst("$tfe", "", ps.AsmOperands);
let AsmString = ps.Mnemonic # !subst("$sccb", !if(has_sccb, "$sccb",""),
!subst("$tfe", "", ps.AsmOperands));
let Inst{55} = acc;
}
multiclass MUBUF_Real_vi_gfx90a<bits<7> op, MUBUF_Pseudo ps> {
def _vi : MUBUF_Real_vi<op, ps>;
def _gfx90a : MUBUF_Real_gfx90a<op, ps>;
def _gfx90a : MUBUF_Real_gfx90a<op, ps, !and(ps.has_sccb,!not(ps.FPAtomic))>;
}
multiclass MUBUF_Real_AllAddr_vi<bits<7> op> {
@ -2483,7 +2486,7 @@ defm BUFFER_ATOMIC_PK_ADD_F16 : MUBUF_Real_Atomic_vi <0x4e>;
} // End SubtargetPredicate = HasAtomicFaddInsts
let SubtargetPredicate = isGFX90APlus, AssemblerPredicate = isGFX90APlus in {
let SubtargetPredicate = isGFX90APlus in {
defm BUFFER_ATOMIC_ADD_F64 : MUBUF_Real_Atomic_vi<0x4f>;
defm BUFFER_ATOMIC_MIN_F64 : MUBUF_Real_Atomic_vi<0x50>;
defm BUFFER_ATOMIC_MAX_F64 : MUBUF_Real_Atomic_vi<0x51>;

4
test/MC/AMDGPU/gfx90a_asm_features.s
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@ -1046,3 +1046,7 @@ global_atomic_add_f32 v1, v0, v2, s[0:1] glc ; encoding: [0x00,0x80,0x35,0xdd,0x
// GFX1010: error: instruction not supported on this GPU
// GFX90A: global_atomic_pk_add_f16 v0, v[0:1], v2, off glc ; encoding: [0x00,0x80,0x39,0xdd,0x00,0x02,0x7f,0x00]
global_atomic_pk_add_f16 v0, v[0:1], v2, off glc
// NOT-GFX90A: error: scc modifier is not supported on this GPU
// GFX90A: buffer_atomic_add v4, off, s[8:11], s3 scc ; encoding: [0x00,0x80,0x08,0xe1,0x00,0x04,0x02,0x03]
buffer_atomic_add v4, off, s[8:11], s3 scc

15
test/MC/AMDGPU/gfx90a_err.s
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@ -231,6 +231,21 @@ global_atomic_min_f64 v[0:1], v[2:3], off scc
global_atomic_max_f64 v[0:1], v[2:3], off scc
// GFX90A: error: instruction must not use scc
buffer_atomic_add_f32 v4, off, s[8:11], s3 scc
// GFX90A: error: instruction must not use scc
buffer_atomic_pk_add_f16 v4, off, s[8:11], s3 scc
// GFX90A: error: instruction must not use scc
buffer_atomic_add_f64 v[4:5], off, s[8:11], s3 scc
// GFX90A: error: instruction must not use scc
buffer_atomic_max_f64 v[4:5], off, s[8:11], s3 scc
// GFX90A: error: instruction must not use scc
buffer_atomic_min_f64 v[4:5], off, s[8:11], s3 scc
// GFX90A: error: instruction must not use scc
v_mov_b32_sdwa v1, src_lds_direct dst_sel:DWORD
// GFX90A: error: lds_direct is not supported on this GPU

3
test/MC/Disassembler/AMDGPU/gfx90a_dasm_features.txt
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@ -793,3 +793,6 @@
# GFX90A: flat_atomic_min_f64 v[0:1], v[0:1], v[2:3] glc ; encoding: [0x00,0x00,0x41,0xdd,0x00,0x02,0x00,0x00]
0x00,0x00,0x41,0xdd,0x00,0x02,0x00,0x00
# GFX90A: buffer_atomic_add v4, off, s[8:11], s3 scc ; encoding: [0x00,0x80,0x08,0xe1,0x00,0x04,0x02,0x03]
0x00,0x80,0x08,0xe1,0x00,0x04,0x02,0x03