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cmd/internal/obj/riscv: add support for vector unit-stride fault-only-first load instructions

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Add support for vector unit-stride fault-only-first load instructions to the RISC-V
assembler. This includes vle8ff, vle16ff, vle32ff and vle64ff.

Change-Id: I5575a1ea155663852f92194fb79f08b5d52203de
Reviewed-on: https://go-review.googlesource.com/c/go/+/690115
Reviewed-by: Junyang Shao <shaojunyang@google.com>
Reviewed-by: Meng Zhuo <mengzhuo1203@gmail.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Joel Sing <joel@sing.id.au>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
This commit is contained in:
wangboyao 2025-07-24 14:49:44 +08:00 • committed by Joel Sing
parent 411c250d64
commit 371c1d2fcb
4 changed files with 20 additions and 1 deletions
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10
src/cmd/asm/internal/asm/testdata/riscv64.s vendored
View file

@ -549,6 +549,16 @@ start:
VSOXEI64V V3, V2, (X10) // a771250e
VSOXEI64V V3, V2, V0, (X10) // a771250c
// 31.7.7: Unit-stride Fault-Only-First Loads
VLE8FFV (X10), V8 // 07040503
VLE16FFV (X10), V8 // 07540503
VLE32FFV (X10), V8 // 07640503
VLE64FFV (X10), V8 // 07740503
VLE8FFV (X10), V0, V8 // 07040501
VLE16FFV (X10), V0, V8 // 07540501
VLE32FFV (X10), V0, V8 // 07640501
VLE64FFV (X10), V0, V8 // 07740501
// 31.7.8: Vector Load/Store Segment Instructions
// 31.7.8.1: Vector Unit-Stride Segment Loads and Stores

1
src/cmd/asm/internal/asm/testdata/riscv64error.s vendored
View file

@ -73,6 +73,7 @@ TEXT errors(SB),$0
//
VSETIVLI X10, E32, M2, TA, MA, X12 // ERROR "expected immediate value"
VLE8V (X10), V1, V3 // ERROR "invalid vector mask register"
VLE8FFV (X10), V1, V3 // ERROR "invalid vector mask register"
VSE8V V3, V1, (X10) // ERROR "invalid vector mask register"
VLSE8V (X10), X10, V1, V3 // ERROR "invalid vector mask register"
VSSE8V V3, X11, V1, (X10) // ERROR "invalid vector mask register"

2
src/cmd/asm/internal/asm/testdata/riscv64validation.s vendored
View file

@ -20,6 +20,8 @@ TEXT validation(SB),$0
VSETVL X10, X11 // ERROR "expected integer register in rs1 position"
VLE8V (X10), X10 // ERROR "expected vector register in vd position"
VLE8V (V1), V3 // ERROR "expected integer register in rs1 position"
VLE8FFV (X10), X10 // ERROR "expected vector register in vd position"
VLE8FFV (V1), V3 // ERROR "expected integer register in rs1 position"
VSE8V X10, (X10) // ERROR "expected vector register in vs1 position"
VSE8V V3, (V1) // ERROR "expected integer register in rd position"
VLSE8V (X10), V3 // ERROR "expected integer register in rs2 position"

8
src/cmd/internal/obj/riscv/obj.go
View file

@ -2176,6 +2176,12 @@ var instructions = [ALAST & obj.AMask]instructionData{
AVSOXEI32V & obj.AMask: {enc: sVIVEncoding},
AVSOXEI64V & obj.AMask: {enc: sVIVEncoding},
// 31.7.7: Unit-stride Fault-Only-First Loads
AVLE8FFV & obj.AMask: {enc: iVEncoding},
AVLE16FFV & obj.AMask: {enc: iVEncoding},
AVLE32FFV & obj.AMask: {enc: iVEncoding},
AVLE64FFV & obj.AMask: {enc: iVEncoding},
// 31.7.8: Vector Load/Store Segment Instructions
AVLSEG2E8V & obj.AMask: {enc: iVEncoding},
AVLSEG3E8V & obj.AMask: {enc: iVEncoding},
@ -3839,7 +3845,7 @@ func instructionsForProg(p *obj.Prog) []*instruction {
ins.rs1 = uint32(p.From.Offset)
}
case AVLE8V, AVLE16V, AVLE32V, AVLE64V, AVSE8V, AVSE16V, AVSE32V, AVSE64V, AVLMV, AVSMV,
case AVLE8V, AVLE16V, AVLE32V, AVLE64V, AVSE8V, AVSE16V, AVSE32V, AVSE64V, AVLE8FFV, AVLE16FFV, AVLE32FFV, AVLE64FFV, AVLMV, AVSMV,
AVLSEG2E8V, AVLSEG3E8V, AVLSEG4E8V, AVLSEG5E8V, AVLSEG6E8V, AVLSEG7E8V, AVLSEG8E8V,
AVLSEG2E16V, AVLSEG3E16V, AVLSEG4E16V, AVLSEG5E16V, AVLSEG6E16V, AVLSEG7E16V, AVLSEG8E16V,
AVLSEG2E32V, AVLSEG3E32V, AVLSEG4E32V, AVLSEG5E32V, AVLSEG6E32V, AVLSEG7E32V, AVLSEG8E32V,