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runtime: switch cputicks and switchToCrashStack0 on loong64 to regabi

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goos: linux
goarch: loong64
pkg: runtime
cpu: Loongson-3A6000 @ 2500.00MHz
                     |   old.bench   |   new.bench                        |
                     |   sec/op      |   sec/op      vs base              |
SelectUncontended       246.6n ± 0%     247.4n ± 0%  +0.32% (p=0.000 n=10)
SelectSyncContended     1.458µ ± 0%     1.461µ ± 0%  +0.17% (p=0.000 n=10)
SelectAsyncContended    246.6n ± 0%     247.5n ± 0%  +0.36% (p=0.000 n=10)
SelectNonblock          32.81n ± 0%     32.81n ± 0%       ~ (p=1.000 n=10)
SelectProdCons          653.8n ± 0%     652.2n ± 0%  -0.24% (p=0.010 n=10)
GoroutineSelect         2.204m ± 0%     2.172m ± 0%  -1.46% (p=0.000 n=10)
GoroutineForRange       1.775m ± 0%     1.748m ± 0%  -1.54% (p=0.000 n=10)
geomean                 3.573µ          3.561µ       -0.34%

Change-Id: I6337cad72369e77e378b6e9bec6521d71b3f4fc5
Reviewed-on: https://go-review.googlesource.com/c/go/+/610175
Reviewed-by: Meidan Li <limeidan@loongson.cn>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Tim King <taking@google.com>
Reviewed-by: sophie zhao <zhaoxiaolin@loongson.cn>
Reviewed-by: Qiqi Huang <huangqiqi@loongson.cn>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Tim King <taking@google.com>
This commit is contained in:
Guoqi Chen 2024-09-03 10:04:02 +08:00 committed by Gopher Robot
parent 7a5fc9b34d
commit 8efb5ebfd0
1 changed files with 8 additions and 9 deletions
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17
src/runtime/asm_loong64.s
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@ -91,9 +91,8 @@ TEXT runtime·mstart(SB),NOSPLIT|TOPFRAME,$0
RET // not reached
// func cputicks() int64
TEXT runtime·cputicks(SB),NOSPLIT,$0-8
TEXT runtime·cputicks<ABIInternal>(SB),NOSPLIT,$0-8
RDTIMED R0, R4
MOVV R4, ret+0(FP)
RET
/*
@ -213,19 +212,19 @@ noswitch:
JMP (R4)
// func switchToCrashStack0(fn func())
TEXT runtime·switchToCrashStack0(SB), NOSPLIT, $0-8
MOVV fn+0(FP), REGCTXT // context register
MOVV g_m(g), R4 // curm
TEXT runtime·switchToCrashStack0<ABIInternal>(SB),NOSPLIT,$0-8
MOVV R4, REGCTXT // context register
MOVV g_m(g), R5 // curm
// set g to gcrash
MOVV $runtime·gcrash(SB), g // g = &gcrash
JAL runtime·save_g(SB)
MOVV R4, g_m(g) // g.m = curm
MOVV g, m_g0(R4) // curm.g0 = g
MOVV R5, g_m(g) // g.m = curm
MOVV g, m_g0(R5) // curm.g0 = g
// switch to crashstack
MOVV (g_stack+stack_hi)(g), R4
ADDV $(-4*8), R4, R3
MOVV (g_stack+stack_hi)(g), R5
ADDV $(-4*8), R5, R3
// call target function
MOVV 0(REGCTXT), R6