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| author | Jan Beulich <jbeulich@suse.com> | 2024-03-01 09:21:40 +0100 |
|---|---|---|
| committer | Jan Beulich <jbeulich@suse.com> | 2024-03-01 09:21:40 +0100 |
| commit | c73a37b26800fc542512558f8403f980bb044435 (patch) | |
| tree | b8ea425bfa94db8da466908948d7e7e55f97b0bc /opcodes | |
| parent | 6804f42c67d97401c7ef8438727eba788fc29329 (diff) | |
| download | gdb-c73a37b26800fc542512558f8403f980bb044435.zip gdb-c73a37b26800fc542512558f8403f980bb044435.tar.gz gdb-c73a37b26800fc542512558f8403f980bb044435.tar.bz2 | |
x86/APX: optimize certain XOR and SUB forms
While most logic in optimize_encoding() is already covering APX by way
of the earlier NDD->REX2 conversion, there's a remaining set of cases
which wants handling separately.
Diffstat (limited to 'opcodes')
| -rw-r--r-- | opcodes/i386-opc.tbl | 4 | ||||
| -rw-r--r-- | opcodes/i386-tbl.h | 4 |
2 files changed, 4 insertions, 4 deletions
diff --git a/opcodes/i386-opc.tbl b/opcodes/i386-opc.tbl index a709e7a..1c770e2 100644 --- a/opcodes/i386-opc.tbl +++ b/opcodes/i386-opc.tbl @@ -320,7 +320,7 @@ inc, 0x40, No64, No_bSuf|No_sSuf|No_qSuf, { Reg16|Reg32 } inc, 0xfe/0, APX_F, W|Modrm|No_sSuf|CheckOperandSize|DstVVVV|EVexMap4|NF, {Reg8|Reg16|Reg32|Reg64|Unspecified|BaseIndex, Reg8|Reg16|Reg32|Reg64} inc, 0xfe/0, 0, W|Modrm|No_sSuf|HLEPrefixLock, { Reg8|Reg16|Reg32|Reg64|Unspecified|BaseIndex } -sub, 0x28, APX_F, D|W|CheckOperandSize|Modrm|No_sSuf|DstVVVV|EVexMap4|NF, { Reg8|Reg16|Reg32|Reg64, Reg8|Reg16|Reg32|Reg64|Unspecified|BaseIndex, Reg8|Reg16|Reg32|Reg64, } +sub, 0x28, APX_F, D|W|CheckOperandSize|Modrm|No_sSuf|DstVVVV|EVexMap4|NF|Optimize, { Reg8|Reg16|Reg32|Reg64, Reg8|Reg16|Reg32|Reg64|Unspecified|BaseIndex, Reg8|Reg16|Reg32|Reg64, } sub, 0x28, 0, D|W|CheckOperandSize|Modrm|No_sSuf|HLEPrefixLock|Optimize, { Reg8|Reg16|Reg32|Reg64, Reg8|Reg16|Reg32|Reg64|Unspecified|BaseIndex } sub, 0x83/5, APX_F, Modrm|No_bSuf|No_sSuf|DstVVVV|EVexMap4|NF, { Imm8S, Reg16|Reg32|Reg64|Unspecified|BaseIndex, Reg16|Reg32|Reg64 } sub, 0x83/5, 0, Modrm|No_bSuf|No_sSuf|HLEPrefixLock, { Imm8S, Reg16|Reg32|Reg64|Unspecified|BaseIndex } @@ -366,7 +366,7 @@ or, 0xc, 0, W|No_sSuf, { Imm8|Imm16|Imm32|Imm32S, Acc|Byte|Word|Dword|Qword } or, 0x80/1, APX_F, W|Modrm|CheckOperandSize|No_sSuf|DstVVVV|EVexMap4|NF, { Imm8|Imm16|Imm32|Imm32S, Reg8|Reg16|Reg32|Reg64|Unspecified|BaseIndex, Reg8|Reg16|Reg32|Reg64 } or, 0x80/1, 0, W|Modrm|No_sSuf|HLEPrefixLock, { Imm8|Imm16|Imm32|Imm32S, Reg8|Reg16|Reg32|Reg64|Unspecified|BaseIndex } -xor, 0x30, APX_F, D|C|W|CheckOperandSize|Modrm|No_sSuf|DstVVVV|EVexMap4|NF, { Reg8|Reg16|Reg32|Reg64, Reg8|Reg16|Reg32|Reg64|Unspecified|BaseIndex, Reg8|Reg16|Reg32|Reg64 } +xor, 0x30, APX_F, D|C|W|CheckOperandSize|Modrm|No_sSuf|DstVVVV|EVexMap4|NF|Optimize, { Reg8|Reg16|Reg32|Reg64, Reg8|Reg16|Reg32|Reg64|Unspecified|BaseIndex, Reg8|Reg16|Reg32|Reg64 } xor, 0x30, 0, D|W|CheckOperandSize|Modrm|No_sSuf|HLEPrefixLock|Optimize, { Reg8|Reg16|Reg32|Reg64, Reg8|Reg16|Reg32|Reg64|Unspecified|BaseIndex } xor, 0x83/6, APX_F, Modrm|CheckOperandSize|No_bSuf|No_sSuf|DstVVVV|EVexMap4|NF, { Imm8S, Reg16|Reg32|Reg64|Unspecified|BaseIndex, Reg16|Reg32|Reg64 } xor, 0x83/6, 0, Modrm|No_bSuf|No_sSuf|HLEPrefixLock, { Imm8S, Reg16|Reg32|Reg64|Unspecified|BaseIndex } diff --git a/opcodes/i386-tbl.h b/opcodes/i386-tbl.h index 2646f7c..f17d94e 100644 --- a/opcodes/i386-tbl.h +++ b/opcodes/i386-tbl.h @@ -896,7 +896,7 @@ static const insn_template i386_optab[] = 0, 0, 0, 0, 1, 0 } } } }, { MN_sub, 0x28, 3, SPACE_EVEXMAP4, None, { 1, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 2, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, + 0, 0, 0, 0, 2, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0 }, { { 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0 } }, { { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } }, @@ -1306,7 +1306,7 @@ static const insn_template i386_optab[] = 0, 0, 0, 0, 1, 0 } } } }, { MN_xor, 0x30, 3, SPACE_EVEXMAP4, None, { 1, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 2, 0, 0, 0, 0, 2, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, + 0, 0, 0, 0, 2, 0, 0, 0, 0, 2, 0, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0 }, { { 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0 } }, { { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } }, |