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cmd/compile: implement atomic intrinsics for riscv64 #36765

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4a6f656c opened this issue Jan 25, 2020 · 9 comments
Closed

cmd/compile: implement atomic intrinsics for riscv64 #36765

4a6f656c opened this issue Jan 25, 2020 · 9 comments
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arch-riscv Issues solely affecting the riscv64 architecture. FrozenDueToAge NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one.
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@4a6f656c
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Go on riscv64 does not currently support atomic intrinsics, rather all atomics are functions. This should be implemented.
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Change https://golang.org/cl/216263 mentions this issue: test: adjust tests for riscv64

gopherbot pushed a commit that referenced this issue Jan 25, 2020
@4a6f656c
test: adjust tests for riscv64
7f331e0 
This disables some tests that are unsupported on riscv64 and adds support
for risc64 to test/nosplit.

Updates #27532, #36739 and #36765

Change-Id: I0a57797a05bc80236709fc240c0a0efb0ee0d16b
Reviewed-on: https://go-review.googlesource.com/c/go/+/216263
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
@tklauser tklauser added the arch-riscv Issues solely affecting the riscv64 architecture. label Jan 27, 2020
@tklauser tklauser added this to the Backlog milestone Jan 27, 2020
@cagedmantis cagedmantis added the NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one. label Feb 3, 2020
@cagedmantis
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/cc @randall77 @griesemer

@gopherbot
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Change https://golang.org/cl/220540 mentions this issue: cmd/internal/obj/riscv: add LR/SC instructions

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Change https://golang.org/cl/220541 mentions this issue: cmd/internal/obj/riscv: add atomic memory operation instructions

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Change https://golang.org/cl/220539 mentions this issue: cmd/internal/obj/riscv: add FENCE instruction

gopherbot pushed a commit that referenced this issue Mar 15, 2020
@4a6f656c
cmd/internal/obj/riscv: add FENCE instruction
2a08f3c 
Also remove #define's that were previously in use.

Updates #36765

Change-Id: I90b6a8629c78f549012f3f6c5f3b325336182712
Reviewed-on: https://go-review.googlesource.com/c/go/+/220539
Reviewed-by: Cherry Zhang <cherryyz@google.com>
gopherbot pushed a commit that referenced this issue Mar 15, 2020
@4a6f656c
cmd/asm,cmd/internal/obj/riscv: add LR/SC instructions
85a8526 
Add support for Load-Reserved (LR) and Store-Conditional (SC) instructions.

Use instructions in place of currently used defines.

Updates #36765

Change-Id: I77e660639802293ece40cfde4865ac237e3308d6
Reviewed-on: https://go-review.googlesource.com/c/go/+/220540
Reviewed-by: Cherry Zhang <cherryyz@google.com>
gopherbot pushed a commit that referenced this issue Mar 15, 2020
@4a6f656c
cmd/asm,cmd/internal/obj/riscv: add atomic memory operation instructions
1063592 
Use instructions in place of currently used defines.

Updates #36765

Change-Id: I00bb59e77b1aace549d7857cc9721ba2cb4ac6ca
Reviewed-on: https://go-review.googlesource.com/c/go/+/220541
Reviewed-by: Cherry Zhang <cherryyz@google.com>
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Change https://golang.org/cl/223557 mentions this issue: cmd/compile: provide Load8/Store8 atomic intrinsics on riscv64

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Change https://golang.org/cl/223560 mentions this issue: test: re-enable atomic intrinsic related tests on riscv64

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Change https://golang.org/cl/223558 mentions this issue: cmd/compile: provide Load32/Load64/Store32/Store64 atomic intrinsics on riscv64

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Change https://golang.org/cl/223559 mentions this issue: cmd/compile: provide Add/Cas/Exchange atomic intrinsics on riscv64

gopherbot pushed a commit that referenced this issue Mar 17, 2020
@4a6f656c
cmd/compile: provide Load8/Store8 atomic intrinsics on riscv64
2e918c3 
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>
gopherbot pushed a commit that referenced this issue Mar 24, 2020
@4a6f656c
cmd/compile: provide Load32/Load64/Store32/Store64 atomic intrinsics …
ade9886 
…on riscv64

Updates #36765

Change-Id: Id5ce5c5f60112e4f4cf9eec1b1ec120994934950
Reviewed-on: https://go-review.googlesource.com/c/go/+/223558
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
gopherbot pushed a commit that referenced this issue Mar 25, 2020
@4a6f656c
cmd/compile: provide Add/Cas/Exchange atomic intrinsics on riscv64
efb0ac4 
Provide Add32, Add64, Cas32, Cas64, Exchange32 and Exchange64 atomic
intrinsics on riscv64.

Updates #36765

Change-Id: I9a3b7d2ce3d49f699171fd76a0fed891d149a6bb
Reviewed-on: https://go-review.googlesource.com/c/go/+/223559
Run-TryBot: Joel Sing <joel@sing.id.au>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
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