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feat(arch): scale and exponent-extract the scalar FP16 in the extension layer

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Assisted-by: GLM 5.3 Flash
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petrbalvin committed 2026-10-07 00:07:58 +02:00
1 parent 127e52de69
commit 0354a1f4c1
3 files changed
+20 -4
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arch/amd64_ext_test.go
+10 -2
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@@ -108,6 +108,14 @@ var amd64GoldenRows = []amd64GoldenRow{
[]ExtOperand{ExtXmm(29), ExtXmm(28), ExtXmm(30)},
"6205160051f4", "62 05 16 00 51 f4 vsqrtsh %xmm28,%xmm29,%xmm30"},
// The scalar scale and exponent extracts, EVEX.NDS.LIG.66.MAP6.W0.
{"vscalefsh", "VSCALEFSH",
[]ExtOperand{ExtXmm(29), ExtXmm(28), ExtXmm(30)},
"620615002df4", "62 06 15 00 2d f4 vscalefsh %xmm28,%xmm29,%xmm30"},
{"vgetexpsh", "VGETEXPSH",
[]ExtOperand{ExtXmm(29), ExtXmm(28), ExtXmm(30)},
"6206150043f4", "62 06 15 00 43 f4 vgetexpsh %xmm28,%xmm29,%xmm30"},
// The scalar compares take two operands, EVEX.LIG.MAP5.W0.
{"vcomish", "VCOMISH",
[]ExtOperand{ExtXmm(29), ExtXmm(30)},
@@ -416,7 +424,7 @@ func TestAmd64ExtArchBinding(t *testing.T) {
t.Errorf("Extensions(%s) carries %d instructions, want none", a, len(got))
}
}
if got := Extensions(AMD64); len(got) != 46 {
t.Errorf("the amd64 layer registers %d instructions, want 46", len(got))
if got := Extensions(AMD64); len(got) != 48 {
t.Errorf("the amd64 layer registers %d instructions, want 48", len(got))
}
}