214
Instruction Dispatch and Execution Resources
AMD Athlon™ Processor x86 Code Optimization
22007E/0—November 1999
FIADD [mem32int]
DAh
mm-000-xxx VectorPath
FIADD [mem16int]
DEh
mm-000-xxx VectorPath
FICOM [mem32int]
DAh
mm-010-xxx VectorPath
FICOM [mem16int]
DEh
mm-010-xxx VectorPath
FICOMP [mem32int]
DAh
mm-011-xxx VectorPath
FICOMP [mem16int]
DEh
mm-011-xxx VectorPath
FIDIV [mem32int]
DAh
mm-110-xxx VectorPath
FIDIV [mem16int]
DEh
mm-110-xxx VectorPath
FIDIVR [mem32int]
DAh
mm-111-xxx VectorPath
FIDIVR [mem16int]
DEh
mm-111-xxx VectorPath
FILD [mem16int]
DFh
mm-000-xxx DirectPath
FSTORE
FILD [mem32int]
DBh
mm-000-xxx DirectPath
FSTORE
FILD [mem64int]
DFh
mm-101-xxx DirectPath
FSTORE
FIMUL [mem32int]
DAh
mm-001-xxx VectorPath
FIMUL [mem16int]
DEh
mm-001-xxx VectorPath
FINCSTP
D9h
F7h
DirectPath
FADD/FMUL/FSTORE
FINIT
DBh
E3h
VectorPath
FIST [mem16int]
DFh
mm-010-xxx DirectPath
FSTORE
FIST [mem32int]
DBh
mm-010-xxx DirectPath
FSTORE
FISTP [mem16int]
DFh
mm-011-xxx DirectPath
FSTORE
FISTP [mem32int]
DBh
mm-011-xxx DirectPath
FSTORE
FISTP [mem64int]
DFh
mm-111-xxx DirectPath
FSTORE
FISUB [mem32int]
DAh
mm-100-xxx VectorPath
FISUB [mem16int]
DEh
mm-100-xxx VectorPath
FISUBR [mem32int]
DAh
mm-101-xxx VectorPath
FISUBR [mem16int]
DEh
mm-101-xxx VectorPath
FLD ST(i)
D9h
11-000-xxx
DirectPath
FADD/FMUL
1
FLD [mem32real]
D9h
mm-000-xxx DirectPath
FADD/FMUL/FSTORE
FLD [mem64real]
DDh
mm-000-xxx DirectPath
FADD/FMUL/FSTORE
FLD [mem80real]
DBh
mm-101-xxx VectorPath
FLD1
D9h
E8h
DirectPath
FSTORE
Table 22. Floating-Point Instructions (Continued)
Instruction Mnemonic
First
Byte
Second
Byte
ModR/M
Byte
Decode
Type
FPU
Pipe(s)
Note
Notes:
1. The last three bits of the modR/M byte select the stack entry ST(i).
Summary of Contents for Athlon Processor x86
Page 1: ...AMD Athlon Processor x86 Code Optimization Guide TM...
Page 12: ...xii List of Figures AMD Athlon Processor x86 Code Optimization 22007E 0 November 1999...
Page 16: ...xvi Revision History AMD Athlon Processor x86 Code Optimization 22007E 0 November 1999...
Page 202: ...186 Page Attribute Table PAT AMD Athlon Processor x86 Code Optimization 22007E 0 November 1999...
Page 252: ...236 VectorPath Instructions AMD Athlon Processor x86 Code Optimization 22007E 0 November 1999...
Page 256: ...240 Index AMD Athlon Processor x86 Code Optimization 22007E 0 November 1999...