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all: AVX-512 (#217)

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Extends avo to support most AVX-512 instruction sets.

The instruction type is extended to support suffixes. The K family of opmask
registers is added to the register package, and the operand package is updated
to support the new operand types. Move instruction deduction in `Load` and
`Store` is extended to support KMOV* and VMOV* forms.

Internal code generation packages were overhauled. Instruction database loading
required various messy changes to account for the additional complexities of the
AVX-512 instruction sets. The internal/api package was added to introduce a
separation between instruction forms in the database, and the functions avo
provides to create them. This was required since with instruction suffixes there
is no longer a one-to-one mapping between instruction constructors and opcodes.

AVX-512 bloated generated source code size substantially, initially increasing
compilation and CI test times to an unacceptable level. Two changes were made to
address this:

1.  Instruction constructors in the `x86` package moved to an optab-based
    approach. This compiles substantially faster than the verbose code
    generation we had before.

2.  The most verbose code-generated tests are moved under build tags and
    limited to a stress test mode. Stress test builds are run on
    schedule but not in regular CI.

An example of AVX-512 accelerated 16-lane MD5 is provided to demonstrate and
test the new functionality.

Updates #20 #163 #229

Co-authored-by: Vaughn Iverson <vsivsi@yahoo.com>
This commit is contained in:
Michael McLoughlin
2021-11-12 18:35:36 -08:00
parent 2867bd7e01
commit b76e849b5c
71 changed files with 257395 additions and 61474 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
operand/checks_test.go
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@@ -127,6 +127,9 @@ func TestChecks(t *testing.T) {
{IsM256, Mem{Base: reg.RBX, Index: reg.R12, Scale: 2}, true},
{IsM256, Mem{Base: reg.X0}, false},
{IsM512, Mem{Base: reg.RBX, Index: reg.R12, Scale: 2}, true},
{IsM512, Mem{Base: reg.X0}, false},
// Argument references (special cases of memory operands)
{IsM, NewParamAddr("foo", 4), true},
{IsM8, NewParamAddr("foo", 4), true},
@@ -151,6 +154,14 @@ func TestChecks(t *testing.T) {
{IsVM64Y, Mem{Base: reg.R11L, Index: reg.Y11}, false},
{IsVM64Y, Mem{Base: reg.R8, Index: reg.Z11}, false},
{IsVM32Z, Mem{Base: reg.R9, Index: reg.Z11}, true},
{IsVM32Z, Mem{Base: reg.R11L, Index: reg.Z11}, false},
{IsVM32Z, Mem{Base: reg.R8, Index: reg.Y11}, false},
{IsVM64Z, Mem{Base: reg.R9, Index: reg.Z11}, true},
{IsVM64Z, Mem{Base: reg.R11L, Index: reg.Z11}, false},
{IsVM64Z, Mem{Base: reg.R8, Index: reg.X11}, false},
// Relative operands
{IsREL8, Rel(math.MinInt8), true},
{IsREL8, Rel(math.MaxInt8), true},