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authorAlexander Musman <alexander.musman@gmail.com>2026-04-02 13:34:42 +0300
committerGopher Robot <gobot@golang.org>2026-04-08 03:53:59 -0700
commitc1352b7df17574e0f7d3ada9514b36ddac993abb (patch)
treee017d2416b50d37fa8a9c84c4e562bef8e2c6b44 /src/cmd/asm
parentb1c8857f95581ef3cb3daa0767985bba9f72320f (diff)
downloadgo-c1352b7df17574e0f7d3ada9514b36ddac993abb.tar.xz
cmd/internal/obj/arm64: add ASIMD miscellaneous unary instructions
Add support for ASIMD unary miscellaneous instructions that operate on a single source register. These use the ASIMDMISC encoding class from the ARM architecture specification. These instruction need some validation for arrangement constraints: - VNOT only allows .B8/.B16 arrangements - VCLS/VCLZ do not support D arrangements - Floating-point variants (VFABS, VFNEG, VFSQRT, VFRINT*) only allow floating-point arrangements (S and D) New instructions by group: Integer absolute/negate: VABS, VNEG Floating-point abs/negate: VFABS, VFNEG Floating-point sqrt: VFSQRT Floating-point round: VFRINTN, VFRINTP, VFRINTM, VFRINTZ Saturating abs/negate: VSQABS, VSQNEG Bit/count operations: VCLS, VCLZ, VNOT Change-Id: I62242eda31f82cd34119c7d4f97316a030e7663b Reviewed-on: https://go-review.googlesource.com/c/go/+/762201 Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Keith Randall <khr@golang.org> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: David Chase <drchase@google.com> Auto-Submit: Keith Randall <khr@golang.org>
Diffstat (limited to 'src/cmd/asm')
-rw-r--r--src/cmd/asm/internal/asm/testdata/arm64.s62
-rw-r--r--src/cmd/asm/internal/asm/testdata/arm64enc.s14
2 files changed, 69 insertions, 7 deletions
diff --git a/src/cmd/asm/internal/asm/testdata/arm64.s b/src/cmd/asm/internal/asm/testdata/arm64.s
index ad46e479e4..185f31c715 100644
--- a/src/cmd/asm/internal/asm/testdata/arm64.s
+++ b/src/cmd/asm/internal/asm/testdata/arm64.s
@@ -199,6 +199,21 @@ TEXT foo(SB), DUPOK|NOSPLIT, $-8
VSRSHR $16, V0.S2, V1.S2 // 0124300f
VSRSHR $16, V0.S4, V1.S4 // 0124304f
VSRSHR $32, V0.D2, V1.D2 // 0124604f
+ VFSQRT V0.S2, V1.S2 // 01f8a12e
+ VFSQRT V0.S4, V1.S4 // 01f8a16e
+ VFSQRT V0.D2, V1.D2 // 01f8e16e
+ VFRINTN V0.S2, V1.S2 // 0188210e
+ VFRINTN V0.S4, V1.S4 // 0188214e
+ VFRINTN V0.D2, V1.D2 // 0188614e
+ VFRINTP V0.S2, V1.S2 // 0188a10e
+ VFRINTP V0.S4, V1.S4 // 0188a14e
+ VFRINTP V0.D2, V1.D2 // 0188e14e
+ VFRINTM V0.S2, V1.S2 // 0198210e
+ VFRINTM V0.S4, V1.S4 // 0198214e
+ VFRINTM V0.D2, V1.D2 // 0198614e
+ VFRINTZ V0.S2, V1.S2 // 0198a10e
+ VFRINTZ V0.S4, V1.S4 // 0198a14e
+ VFRINTZ V0.D2, V1.D2 // 0198e14e
VSHL $56, V1.D2, V2.D2 // 2254784f
VSHL $24, V1.S4, V2.S4 // 2254384f
VSHL $24, V1.S2, V2.S2 // 2254380f
@@ -439,6 +454,53 @@ TEXT foo(SB), DUPOK|NOSPLIT, $-8
VREV16 V7.B16, V5.B16 // e518204e
VREV16 V7.B8, V5.B8 // e518200e
+ VABS V0.B8, V1.B8 // 01b8200e
+ VABS V0.B16, V1.B16 // 01b8204e
+ VABS V0.H4, V1.H4 // 01b8600e
+ VABS V0.H8, V1.H8 // 01b8604e
+ VABS V0.S2, V1.S2 // 01b8a00e
+ VABS V0.S4, V1.S4 // 01b8a04e
+ VABS V0.D2, V1.D2 // 01b8e04e
+ VCLS V0.B8, V1.B8 // 0148200e
+ VCLS V0.B16, V1.B16 // 0148204e
+ VCLS V0.H4, V1.H4 // 0148600e
+ VCLS V0.H8, V1.H8 // 0148604e
+ VCLS V0.S2, V1.S2 // 0148a00e
+ VCLS V0.S4, V1.S4 // 0148a04e
+ VCLZ V0.B8, V1.B8 // 0148202e
+ VCLZ V0.B16, V1.B16 // 0148206e
+ VCLZ V0.H4, V1.H4 // 0148602e
+ VCLZ V0.H8, V1.H8 // 0148606e
+ VCLZ V0.S2, V1.S2 // 0148a02e
+ VCLZ V0.S4, V1.S4 // 0148a06e
+ VNEG V0.B8, V1.B8 // 01b8202e
+ VNEG V0.B16, V1.B16 // 01b8206e
+ VNEG V0.H4, V1.H4 // 01b8602e
+ VNEG V0.H8, V1.H8 // 01b8606e
+ VNEG V0.S2, V1.S2 // 01b8a02e
+ VNEG V0.S4, V1.S4 // 01b8a06e
+ VNEG V0.D2, V1.D2 // 01b8e06e
+ VFABS V0.S2, V1.S2 // 01f8a00e
+ VFABS V0.S4, V1.S4 // 01f8a04e
+ VFABS V0.D2, V1.D2 // 01f8e04e
+ VFNEG V0.S2, V1.S2 // 01f8a02e
+ VFNEG V0.S4, V1.S4 // 01f8a06e
+ VFNEG V0.D2, V1.D2 // 01f8e06e
+ VSQABS V0.B8, V1.B8 // 0178200e
+ VSQABS V0.B16, V1.B16 // 0178204e
+ VSQABS V0.H4, V1.H4 // 0178600e
+ VSQABS V0.H8, V1.H8 // 0178604e
+ VSQABS V0.S2, V1.S2 // 0178a00e
+ VSQABS V0.S4, V1.S4 // 0178a04e
+ VSQNEG V0.B8, V1.B8 // 0178202e
+ VSQNEG V0.B16, V1.B16 // 0178206e
+ VSQNEG V0.H4, V1.H4 // 0178602e
+ VSQNEG V0.H8, V1.H8 // 0178606e
+ VSQNEG V0.S2, V1.S2 // 0178a02e
+ VSQNEG V0.S4, V1.S4 // 0178a06e
+ VNOT V0.B8, V1.B8 // 0158202e
+ VNOT V0.B16, V1.B16 // 0158206e
+
// logical ops
//
// make sure constants get encoded into an instruction when it could
diff --git a/src/cmd/asm/internal/asm/testdata/arm64enc.s b/src/cmd/asm/internal/asm/testdata/arm64enc.s
index 3af0880b78..76151a3570 100644
--- a/src/cmd/asm/internal/asm/testdata/arm64enc.s
+++ b/src/cmd/asm/internal/asm/testdata/arm64enc.s
@@ -426,7 +426,7 @@ TEXT asmtest(SB),DUPOK|NOSPLIT,$-8
YIELD // 3f2003d5
//TODO FABD F0, F5, F11 // abd4a07e
//TODO VFABD V30.S2, V8.S2, V24.S2 // 18d5be2e
- //TODO VFABS V5.S4, V24.S4 // b8f8a04e
+ VFABS V5.S4, V24.S4 // b8f8a04e
FABSS F2, F28 // 5cc0201e
FABSD F0, F14 // 0ec0601e
//TODO FACGE F25, F16, F0 // 00ee797e
@@ -603,7 +603,7 @@ TEXT asmtest(SB),DUPOK|NOSPLIT,$-8
//TODO VFMULX V12.D[1], V21.D2, V31.D2 // bf9acc6f
//TODO FMULX F16, F1, F31 // 3fdc705e
//TODO VFMULX V29.S2, V13.S2, V31.S2 // bfdd3d0e
- //TODO VFNEG V18.S2, V12.S2 // 4cfaa02e
+ VFNEG V18.S2, V12.S2 // 4cfaa02e
FNEGS F16, F5 // 0542211e
FNEGD F31, F31 // ff43611e
FNMADDS F17, F22, F6, F20 // d458311f
@@ -623,26 +623,26 @@ TEXT asmtest(SB),DUPOK|NOSPLIT,$-8
//TODO VFRINTI V21.D2, V31.D2 // bf9ae16e
FRINTIS F17, F17 // 31c2271e
FRINTID F9, F15 // 2fc1671e
- //TODO VFRINTM V9.D2, V27.D2 // 3b99614e
+ VFRINTM V9.D2, V27.D2 // 3b99614e
FRINTMS F24, F16 // 1043251e
FRINTMD F5, F2 // a240651e
- //TODO VFRINTN V30.S4, V2.S4 // c28b214e
+ VFRINTN V30.S4, V2.S4 // c28b214e
FRINTNS F26, F14 // 4e43241e
FRINTND F28, F12 // 8c43641e
- //TODO VFRINTP V27.D2, V31.D2 // 7f8be14e
+ VFRINTP V27.D2, V31.D2 // 7f8be14e
FRINTPS F27, F4 // 64c3241e
FRINTPD F6, F22 // d6c0641e
//TODO VFRINTX V25.D2, V0.D2 // 209b616e
FRINTXS F26, F10 // 4a43271e
FRINTXD F16, F12 // 0c42671e
- //TODO VFRINTZ V25.S4, V27.S4 // 3b9ba14e
+ VFRINTZ V25.S4, V27.S4 // 3b9ba14e
FRINTZS F3, F28 // 7cc0251e
FRINTZD F24, F6 // 06c3651e
//TODO FRSQRTE F29, F5 // a5dbe17e
//TODO VFRSQRTE V18.S2, V1.S2 // 41daa12e
//TODO FRSQRTS F17, F7, F24 // f8fcf15e
//TODO VFRSQRTS V14.S2, V10.S2, V24.S2 // 58fdae0e
- //TODO VFSQRT V2.D2, V21.D2 // 55f8e16e
+ VFSQRT V2.D2, V21.D2 // 55f8e16e
FSQRTS F0, F9 // 09c0211e
FSQRTD F14, F27 // dbc1611e
FSUBS F25, F23, F0 // e03a391e
generated by cgit v1.3-5-g9baa (git 2.53.0) at 2026-04-17 09:28:41 +0000