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[AMDGPU][MC][gfx8] Support 20-bit immediate offset in SMEM instructions.

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Fixes Bug 30808.
Note that passing subtarget information to predicates seems too complicated, so gfx8-specific def smrd_offset_20 introduced.
Old gfx6/7-specific def renamed to smrd_offset_8 for clarity.
Lit tests updated.

Differential Revision: https://reviews.llvm.org/D26085

llvm-svn: 285590
This commit is contained in:
Artem Tamazov 2016-10-31 16:07:39 +00:00
parent 61b1df30d2
commit 0eaeb67ad9
6 changed files with 52 additions and 15 deletions
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21
lib/Target/AMDGPU/AsmParser/AMDGPUAsmParser.cpp
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@ -341,7 +341,8 @@ public:
bool isSWaitCnt() const;
bool isHwreg() const;
bool isSendMsg() const;
bool isSMRDOffset() const;
bool isSMRDOffset8() const;
bool isSMRDOffset20() const;
bool isSMRDLiteralOffset() const;
bool isDPPCtrl() const;
bool isGPRIdxMode() const;
@ -741,7 +742,8 @@ public:
AMDGPUOperand::Ptr defaultDA() const;
AMDGPUOperand::Ptr defaultR128() const;
AMDGPUOperand::Ptr defaultLWE() const;
AMDGPUOperand::Ptr defaultSMRDOffset() const;
AMDGPUOperand::Ptr defaultSMRDOffset8() const;
AMDGPUOperand::Ptr defaultSMRDOffset20() const;
AMDGPUOperand::Ptr defaultSMRDLiteralOffset() const;
OperandMatchResultTy parseOModOperand(OperandVector &Operands);
@ -2533,20 +2535,25 @@ AMDGPUOperand::Ptr AMDGPUAsmParser::defaultLWE() const {
// smrd
//===----------------------------------------------------------------------===//
bool AMDGPUOperand::isSMRDOffset() const {
// FIXME: Support 20-bit offsets on VI. We need to to pass subtarget
// information here.
bool AMDGPUOperand::isSMRDOffset8() const {
return isImm() && isUInt<8>(getImm());
}
bool AMDGPUOperand::isSMRDOffset20() const {
return isImm() && isUInt<20>(getImm());
}
bool AMDGPUOperand::isSMRDLiteralOffset() const {
// 32-bit literals are only supported on CI and we only want to use them
// when the offset is > 8-bits.
return isImm() && !isUInt<8>(getImm()) && isUInt<32>(getImm());
}
AMDGPUOperand::Ptr AMDGPUAsmParser::defaultSMRDOffset() const {
AMDGPUOperand::Ptr AMDGPUAsmParser::defaultSMRDOffset8() const {
return AMDGPUOperand::CreateImm(this, 0, SMLoc(), AMDGPUOperand::ImmTyOffset);
}
AMDGPUOperand::Ptr AMDGPUAsmParser::defaultSMRDOffset20() const {
return AMDGPUOperand::CreateImm(this, 0, SMLoc(), AMDGPUOperand::ImmTyOffset);
}

8
lib/Target/AMDGPU/InstPrinter/AMDGPUInstPrinter.cpp
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@ -129,7 +129,13 @@ void AMDGPUInstPrinter::printOffset1(const MCInst *MI, unsigned OpNo,
}
}
void AMDGPUInstPrinter::printSMRDOffset(const MCInst *MI, unsigned OpNo,
void AMDGPUInstPrinter::printSMRDOffset8(const MCInst *MI, unsigned OpNo,
const MCSubtargetInfo &STI,
raw_ostream &O) {
printU32ImmOperand(MI, OpNo, STI, O);
}
void AMDGPUInstPrinter::printSMRDOffset20(const MCInst *MI, unsigned OpNo,
const MCSubtargetInfo &STI,
raw_ostream &O) {
printU32ImmOperand(MI, OpNo, STI, O);

4
lib/Target/AMDGPU/InstPrinter/AMDGPUInstPrinter.h
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@ -56,7 +56,9 @@ private:
raw_ostream &O);
void printOffset1(const MCInst *MI, unsigned OpNo, const MCSubtargetInfo &STI,
raw_ostream &O);
void printSMRDOffset(const MCInst *MI, unsigned OpNo,
void printSMRDOffset8(const MCInst *MI, unsigned OpNo,
const MCSubtargetInfo &STI, raw_ostream &O);
void printSMRDOffset20(const MCInst *MI, unsigned OpNo,
const MCSubtargetInfo &STI, raw_ostream &O);
void printSMRDLiteralOffset(const MCInst *MI, unsigned OpNo,
const MCSubtargetInfo &STI, raw_ostream &O);

14
lib/Target/AMDGPU/SMInstructions.td
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@ -7,11 +7,15 @@
//
//===----------------------------------------------------------------------===//
def smrd_offset : NamedOperandU32<"SMRDOffset",
NamedMatchClass<"SMRDOffset">> {
def smrd_offset_8 : NamedOperandU32<"SMRDOffset8",
NamedMatchClass<"SMRDOffset8">> {
let OperandType = "OPERAND_IMMEDIATE";
}
def smrd_offset_20 : NamedOperandU32<"SMRDOffset20",
NamedMatchClass<"SMRDOffset20">> {
let OperandType = "OPERAND_IMMEDIATE";
}
//===----------------------------------------------------------------------===//
// Scalar Memory classes
@ -325,7 +329,7 @@ multiclass SM_Real_Loads_si<bits<5> op, string ps,
SM_Load_Pseudo sgprPs = !cast<SM_Load_Pseudo>(ps#_SGPR)> {
def _IMM_si : SMRD_Real_si <op, immPs> {
let InOperandList = (ins immPs.BaseClass:$sbase, smrd_offset:$offset, GLC:$glc);
let InOperandList = (ins immPs.BaseClass:$sbase, smrd_offset_8:$offset, GLC:$glc);
}
// FIXME: The operand name $offset is inconsistent with $soff used
@ -378,7 +382,7 @@ multiclass SM_Real_Loads_vi<bits<8> op, string ps,
SM_Load_Pseudo immPs = !cast<SM_Load_Pseudo>(ps#_IMM),
SM_Load_Pseudo sgprPs = !cast<SM_Load_Pseudo>(ps#_SGPR)> {
def _IMM_vi : SMEM_Real_vi <op, immPs> {
let InOperandList = (ins immPs.BaseClass:$sbase, smrd_offset:$offset, GLC:$glc);
let InOperandList = (ins immPs.BaseClass:$sbase, smrd_offset_20:$offset, GLC:$glc);
}
def _SGPR_vi : SMEM_Real_vi <op, sgprPs> {
let InOperandList = (ins sgprPs.BaseClass:$sbase, SReg_32:$offset, GLC:$glc);
@ -391,7 +395,7 @@ multiclass SM_Real_Stores_vi<bits<8> op, string ps,
// FIXME: The operand name $offset is inconsistent with $soff used
// in the pseudo
def _IMM_vi : SMEM_Real_vi <op, immPs> {
let InOperandList = (ins immPs.SrcClass:$sdata, immPs.BaseClass:$sbase, smrd_offset:$offset, GLC:$glc);
let InOperandList = (ins immPs.SrcClass:$sdata, immPs.BaseClass:$sbase, smrd_offset_20:$offset, GLC:$glc);
}
def _SGPR_vi : SMEM_Real_vi <op, sgprPs> {

17
test/MC/AMDGPU/smrd.s
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@ -21,8 +21,23 @@ s_load_dword s1, s[2:3], 0xff
s_load_dword s1, s[2:3], 0x100
// NOSI: error: instruction not supported on this GPU
// NOVI: error: instruction not supported on this GPU
// CI: s_load_dword s1, s[2:3], 0x100 ; encoding: [0xff,0x82,0x00,0xc0,0x00,0x01,0x00,0x00]
// VI: s_load_dword s1, s[2:3], 0x100 ; encoding: [0x41,0x00,0x02,0xc0,0x00,0x01,0x00,0x00]
s_load_dword s1, s[2:3], 0xfffff
// NOSI: error: instruction not supported on this GPU
// CI: s_load_dword s1, s[2:3], 0xfffff ; encoding: [0xff,0x82,0x00,0xc0,0xff,0xff,0x0f,0x00]
// VI: s_load_dword s1, s[2:3], 0xfffff ; encoding: [0x41,0x00,0x02,0xc0,0xff,0xff,0x0f,0x00]
s_load_dword s1, s[2:3], 0x100000
// NOSI: error: instruction not supported on this GPU
// CI: s_load_dword s1, s[2:3], 0x100000 ; encoding: [0xff,0x82,0x00,0xc0,0x00,0x00,0x10,0x00]
// NOVI: error: instruction not supported on this GPU
s_load_dword s1, s[2:3], 0xffffffff
// NOSI: error: instruction not supported on this GPU
// CI: s_load_dword s1, s[2:3], 0xffffffff ; encoding: [0xff,0x82,0x00,0xc0,0xff,0xff,0xff,0xff]
// NOVI: error: instruction not supported on this GPU
//===----------------------------------------------------------------------===//
// Instructions

3
test/MC/Disassembler/AMDGPU/smrd_vi.txt
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@ -9,6 +9,9 @@
# VI: s_load_dword s1, s[2:3], 0x1 ; encoding: [0x41,0x00,0x02,0xc0,0x01,0x00,0x00,0x00]
0x41 0x00 0x02 0xc0 0x01 0x00 0x00 0x00
# VI: s_load_dword s1, s[2:3], 0xfffff ; encoding: [0x41,0x00,0x02,0xc0,0xff,0xff,0x0f,0x00]
0x41,0x00,0x02,0xc0,0xff,0xff,0x0f,0x00
# VI: s_load_dword s1, s[2:3], s4 ; encoding: [0x41,0x00,0x00,0xc0,0x04,0x00,0x00,0x00]
0x41 0x00 0x00 0xc0 0x04 0x00 0x00 0x00