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fix(asm): encode BSF, BSR and POPCNT

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Assisted-by: GLM 5.3
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petrbalvin
2026-08-24 20:19:34 +02:00
parent 5e06d6a6aa
commit b08005753e
3 changed files with 33 additions and 11 deletions
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asm/encode_test.go
+8
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@@ -203,6 +203,14 @@ func TestScalarGroundTruth(t *testing.T) {
{"LZCNTQ R8,R9", "LZCNTQ", []Operand{r8, r9}, "f34d0fbdc8", "LZCNT"},
{"LZCNTW AX,CX", "LZCNTW", []Operand{AX, CX}, "66f30fbdc8", "LZCNT"},
{"TZCNTL AX,CX", "TZCNTL", []Operand{AX, CX}, "f30fbcc8", "TZCNT"},
// Bit scan: BSF/BSR are the unprefixed forms of TZCNT/LZCNT's map.
{"BSFL AX,CX", "BSFL", []Operand{AX, CX}, "0fbcc8", "BSF"},
{"BSFQ R8,R9", "BSFQ", []Operand{r8, r9}, "4d0fbcc8", "BSF"},
{"BSFW AX,CX", "BSFW", []Operand{AX, CX}, "660fbcc8", "BSF"},
{"BSRL AX,CX", "BSRL", []Operand{AX, CX}, "0fbdc8", "BSR"},
{"BSRQ AX,CX", "BSRQ", []Operand{AX, CX}, "480fbdc8", "BSR"},
{"POPCNTL AX,CX", "POPCNTL", []Operand{AX, CX}, "f30fb8c8", "POPCNT"},
{"POPCNTQ R8,R9", "POPCNTQ", []Operand{r8, r9}, "f34d0fb8c8", "POPCNT"},
{"CMOVLGT CX,AX", "CMOVLGT", []Operand{CX, AX}, "0f4fc1", "CMOVG"},
{"CMOVLEQ CX,AX", "CMOVLEQ", []Operand{CX, AX}, "0f44c1", "CMOVE"},
{"CMOVQGT R9,R8", "CMOVQGT", []Operand{r9, r8}, "4d0f4fc1", "CMOVG"},