diff options
| author | Junyang Shao <shaojunyang@google.com> | 2026-04-10 17:14:35 +0000 |
|---|---|---|
| committer | Junyang Shao <shaojunyang@google.com> | 2026-04-13 13:36:48 -0700 |
| commit | 356b87fa7bbba02debea59d2d03e1eca1750ccb6 (patch) | |
| tree | cf151c602d80cc2c5faf4547de8ec00800275431 /src/cmd/internal/obj/util.go | |
| parent | 65203e06e61429f0dfc79a406212fa9b99599546 (diff) | |
| download | go-356b87fa7bbba02debea59d2d03e1eca1750ccb6.tar.xz | |
cmd/asm, cmd/internal/obj/arm64: support memory with MUL VL imm offset
This CL is generated by CL 765440.
This CL supports this addressing pattern:
(VL*imm)(Reg)
(-VL*imm)(Reg)
Change-Id: I4d1bab2ef6c4141699a47b28aa14b28cdee6cb3f
Reviewed-on: https://go-review.googlesource.com/c/go/+/765420
LUCI-TryBot-Result: golang-scoped@luci-project-accounts.iam.gserviceaccount.com <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: David Chase <drchase@google.com>
Commit-Queue: Junyang Shao <shaojunyang@google.com>
Diffstat (limited to 'src/cmd/internal/obj/util.go')
| -rw-r--r-- | src/cmd/internal/obj/util.go | 42 |
1 files changed, 25 insertions, 17 deletions
diff --git a/src/cmd/internal/obj/util.go b/src/cmd/internal/obj/util.go index fffafeba05..2b7c1f99a8 100644 --- a/src/cmd/internal/obj/util.go +++ b/src/cmd/internal/obj/util.go @@ -304,24 +304,32 @@ func writeDconv(w io.Writer, p *Prog, a *Addr, abiDetail bool) { case TYPE_MEM: if buildcfg.GOARCH == "arm64" && (a.Scale < 0 || (a.Index != REG_NONE && (isZReg(int(a.Reg)) || isZReg(int(a.Index))))) { // SVE extended addressing pattern - amount := 0 - mod := 0 - if a.Scale < 0 { - amount = int((a.Scale >> 12) & 0x7) - mod = int((a.Scale >> 9) & 0x7) - } - modStr := "" - switch mod { - case 1: - modStr = ".UXTW" - case 2: - modStr = ".SXTW" - } - amountStr := "" - if amount != 0 { - amountStr = fmt.Sprintf("<<%d", amount) + if a.Index == REG_NONE { + if a.Offset < 0 { + fmt.Fprintf(w, "(-VL*%d)(%v)", -a.Offset, Rconv(int(a.Reg))) + } else { + fmt.Fprintf(w, "(VL*%d)(%v)", a.Offset, Rconv(int(a.Reg))) + } + } else { + amount := 0 + mod := 0 + if a.Scale < 0 { + amount = int((a.Scale >> 12) & 0x7) + mod = int((a.Scale >> 9) & 0x7) + } + modStr := "" + switch mod { + case 1: + modStr = ".UXTW" + case 2: + modStr = ".SXTW" + } + amountStr := "" + if amount != 0 { + amountStr = fmt.Sprintf("<<%d", amount) + } + fmt.Fprintf(w, "(%v%s%s)(%v)", Rconv(int(a.Reg)), modStr, amountStr, Rconv(int(a.Index))) } - fmt.Fprintf(w, "(%v%s%s)(%v)", Rconv(int(a.Reg)), modStr, amountStr, Rconv(int(a.Index))) } else { a.WriteNameTo(w) if a.Index != REG_NONE { |