H. Peter Anvin
d15bb009f6
Intel FMA: drop relaxed forms
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The Intel FMA instructions are destructive, so relaxed forms are not
appropriate.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-06-24 21:45:27 -07:00
H. Peter Anvin
74eed4a9b3
BR 2690688: Fix opcodes for FMA instructions
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Two bugs with respect to the FMA instructions:
- the variant increment is supposed to be 0x10, not 0x01.
- the base opcode for scalar VFNMADD is 0x9d, not 0x9c
2009-03-17 18:26:47 -07:00
H. Peter Anvin
ef72b03fb4
BR 2690688: add missing VFM instructions
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The Perl script which auto-generated the VFM instructions had
incorrectly conflated the VEX.W and VEX.L bits, with the result that
only half the valid instructions were generated.
2009-03-17 16:16:39 -07:00
H. Peter Anvin
40d37eef81
genfma: fix spelling of the VFNM instructions
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Fix the spelling of the scalar VFNM instruction in genfma.pl, too,
just in case we need to pull this script out again...
2009-03-16 11:51:07 -07:00
H. Peter Anvin
d8e47f6da9
FMA instructions won't be in Sandy Bridge
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The FMA instructions aren't scheduled for Sandy Bridge after all.
They will be "in a future processor", so create a placeholder for now.
2009-02-21 16:43:48 -08:00
H. Peter Anvin
0662203978
Perl script used to generate FMA instruction patterns
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Small perl script used to generate the FMA instruction patterns. May
come in useful if the spec changes again.
2009-02-18 14:13:45 -08:00
