Stowage/go
2
0
Fork 0
mirror of https://github.com/golang/go.git synced 2025-12-08 06:10:04 +00:00
Code Issues Projects Releases Packages Wiki Activity

cmd/compile: provide Load8/Store8 atomic intrinsics on riscv64

Browse source 
Updates #36765

Change-Id: Ieeb6bbc54e4841a1348ad50e80342ec4bc675e07
Reviewed-on: https://go-review.googlesource.com/c/go/+/223557
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Joel Sing 2020-03-16 02:38:43 +11:00
parent 7ec4adbc91
commit 2e918c3aab
6 changed files with 68 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

9
src/cmd/compile/internal/ssa/gen/RISCV64Ops.go
View file

@ -265,6 +265,15 @@ func init() {
faultOnNilArg1: true,
},
// Atomic loads.
// load from arg0. arg1=mem.
// returns <value,memory> so they can be properly ordered with other loads.
{name: "LoweredAtomicLoad8", argLength: 2, reg: gpload, faultOnNilArg0: true},
// Atomic stores.
// store arg1 to arg0. arg2=mem. returns memory.
{name: "LoweredAtomicStore8", argLength: 3, reg: gpstore, faultOnNilArg0: true, hasSideEffects: true},
// Lowering pass-throughs
{name: "LoweredNilCheck", argLength: 2, faultOnNilArg0: true, nilCheck: true, reg: regInfo{inputs: []regMask{gpspMask}}}, // arg0=ptr,arg1=mem, returns void. Faults if ptr is nil.
{name: "LoweredGetClosurePtr", reg: regInfo{outputs: []regMask{regCtxt}}}, // scheduler ensures only at beginning of entry block