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cmd/asm: add x86 POPCNTW, POPCNTL 

Fixes #4816.

Change-Id: Ibeaa69f57b7519d56df4ea357edf8d9dc2102ffe
Reviewed-on: https://go-review.googlesource.com/18851
Reviewed-by: Rob Pike <r@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Russ Cox 2016-01-22 16:25:06 -05:00
parent 659c632885
commit 7f620a57d0
2 changed files with 27 additions and 16 deletions
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32
src/cmd/asm/internal/asm/testdata/amd64enc.s vendored
View File

@ -4145,22 +4145,22 @@ TEXT asmtest(SB),7,$0
POPQ DX // 8fc2 or 5a
PUSHQ AX
POPQ R11 // 418fc3 or 415b
//TODO: POPCNTW (BX), DX // 66f30fb813
//TODO: POPCNTW (R11), DX // 66f3410fb813
//TODO: POPCNTW DX, DX // 66f30fb8d2
//TODO: POPCNTW R11, DX // 66f3410fb8d3
//TODO: POPCNTW (BX), R11 // 66f3440fb81b
//TODO: POPCNTW (R11), R11 // 66f3450fb81b
//TODO: POPCNTW DX, R11 // 66f3440fb8da
//TODO: POPCNTW R11, R11 // 66f3450fb8db
//TODO: POPCNTL (BX), DX // f30fb813
//TODO: POPCNTL (R11), DX // f3410fb813
//TODO: POPCNTL DX, DX // f30fb8d2
//TODO: POPCNTL R11, DX // f3410fb8d3
//TODO: POPCNTL (BX), R11 // f3440fb81b
//TODO: POPCNTL (R11), R11 // f3450fb81b
//TODO: POPCNTL DX, R11 // f3440fb8da
//TODO: POPCNTL R11, R11 // f3450fb8db
POPCNTW (BX), DX // 66f30fb813
POPCNTW (R11), DX // 66f3410fb813
POPCNTW DX, DX // 66f30fb8d2
POPCNTW R11, DX // 66f3410fb8d3
POPCNTW (BX), R11 // 66f3440fb81b
POPCNTW (R11), R11 // 66f3450fb81b
POPCNTW DX, R11 // 66f3440fb8da
POPCNTW R11, R11 // 66f3450fb8db
POPCNTL (BX), DX // f30fb813
POPCNTL (R11), DX // f3410fb813
POPCNTL DX, DX // f30fb8d2
POPCNTL R11, DX // f3410fb8d3
POPCNTL (BX), R11 // f3440fb81b
POPCNTL (R11), R11 // f3450fb81b
POPCNTL DX, R11 // f3440fb8da
POPCNTL R11, R11 // f3450fb8db
POPCNTQ (BX), DX // f3480fb813
POPCNTQ (R11), DX // f3490fb813
POPCNTQ DX, DX // f3480fb8d2

11
src/cmd/internal/obj/x86/asm6.go
View File

@ -219,6 +219,7 @@ const (
Pb = 0xfe /* byte operands */
Pf2 = 0xf2 /* xmm escape 1: f2 0f */
Pf3 = 0xf3 /* xmm escape 2: f3 0f */
Pef3 = 0xf5 /* xmm escape 2 with 16-bit prefix: 66 f3 0f */
Pq3 = 0x67 /* xmm escape 3: 66 48 0f */
Pfw = 0xf4 /* Pf3 with Rex.w: f3 48 0f */
Pvex1 = 0xc5 /* 66.0f escape, vex encoding */
@ -1208,6 +1209,8 @@ var optab =
{APMULULQ, ymm, Py1, [23]uint8{0xf4, Pe, 0xf4}},
{APOPAL, ynone, P32, [23]uint8{0x61}},
{APOPAW, ynone, Pe, [23]uint8{0x61}},
{APOPCNTW, yml_rl, Pef3, [23]uint8{0xb8}},
{APOPCNTL, yml_rl, Pf3, [23]uint8{0xb8}},
{APOPCNTQ, yml_rl, Pfw, [23]uint8{0xb8}},
{APOPFL, ynone, P32, [23]uint8{0x9d}},
{APOPFQ, ynone, Py, [23]uint8{0x9d}},
@ -3204,6 +3207,14 @@ func doasm(ctxt *obj.Link, p *obj.Prog) {
ctxt.Andptr[0] = Pm
ctxt.Andptr = ctxt.Andptr[1:]
case Pef3:
ctxt.Andptr[0] = Pe
ctxt.Andptr = ctxt.Andptr[1:]
ctxt.Andptr[0] = Pf3
ctxt.Andptr = ctxt.Andptr[1:]
ctxt.Andptr[0] = Pm
ctxt.Andptr = ctxt.Andptr[1:]
case Pfw: /* xmm opcode escape + REX.W */
ctxt.Rexflag |= Pw
ctxt.Andptr[0] = Pf3