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| author | Alexander Musman <alexander.musman@gmail.com> | 2025-11-01 14:44:39 +0300 |
|---|---|---|
| committer | Gopher Robot <gobot@golang.org> | 2025-11-03 13:09:40 -0800 |
| commit | 0c4444e13dc7f6a56b16224d32359559edff93b6 (patch) | |
| tree | f38dabf7bbe50212a4b057f290299fe68e22b0ee /src/cmd/internal/obj | |
| parent | 85bec791a0941734520217d548f80714554e5f20 (diff) | |
| download | go-0c4444e13dc7f6a56b16224d32359559edff93b6.tar.xz | |
cmd/internal/obj: support arm64 FMOVQ large offset encoding
Support arm64 FMOVQ with large offset in immediate which is encoded
using register offset instruction in opldrr or opstrr. This will help
allowing folding immediate into new ssa ops FMOVQload and FMOVQstore.
For example: FMOVQ F0, -20000(R0) is encoded as following:
MOVD 3(PC), R27
FMOVQ F0, (R0)(R27)
RET
ffff b1e0 # constant value
Change-Id: Ib71f92f6ff4b310bda004a440b1df41ffe164523
Reviewed-on: https://go-review.googlesource.com/c/go/+/716960
Reviewed-by: Cherry Mui <cherryyz@google.com>
Auto-Submit: Michael Pratt <mpratt@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
Diffstat (limited to 'src/cmd/internal/obj')
| -rw-r--r-- | src/cmd/internal/obj/arm64/asm7.go | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/cmd/internal/obj/arm64/asm7.go b/src/cmd/internal/obj/arm64/asm7.go index befd1bee13..7e7f028bfb 100644 --- a/src/cmd/internal/obj/arm64/asm7.go +++ b/src/cmd/internal/obj/arm64/asm7.go @@ -7276,6 +7276,8 @@ func (c *ctxt7) opldrr(p *obj.Prog, a obj.As, rt, rn, rm int16, extension bool) op = OptionS<<10 | 0x3<<21 | 0x17<<27 | 1<<26 case AFMOVD: op = OptionS<<10 | 0x3<<21 | 0x1f<<27 | 1<<26 + case AFMOVQ: + op = OptionS<<10 | 0x7<<21 | 0x07<<27 | 1<<26 default: c.ctxt.Diag("bad opldrr %v\n%v", a, p) return 0 @@ -7308,6 +7310,8 @@ func (c *ctxt7) opstrr(p *obj.Prog, a obj.As, rt, rn, rm int16, extension bool) op = OptionS<<10 | 0x1<<21 | 0x17<<27 | 1<<26 case AFMOVD: op = OptionS<<10 | 0x1<<21 | 0x1f<<27 | 1<<26 + case AFMOVQ: + op = OptionS<<10 | 0x5<<21 | 0x07<<27 | 1<<26 default: c.ctxt.Diag("bad opstrr %v\n%v", a, p) return 0 |