mem-cache: fix sendEvent schedule time bugs.

[zephyrols]

The "sendEvent" has been wrongly set as "If it is scheduled and has not been executed yet, it cannot be rescheduled." This results in the inability to update the sendEvent time in a timely manner when more urgent events need to be scheduled.

we put a panic here to check. For test we try checkpoint "/nfs/home/share/jiaxiaoyu/simpoint_checkpoint_zstd_format/spec06_rv64gcb_O3_20m_gcc12.2.0-intFpcOff-jeMalloc/astar_biglakes/562/562_0.202736.zstd", and panic happend.

the breakpoint environment

this is a early prefetch should be shedule before it.

Change-Id: Id8f470ee02ad111fc6b9f90908dc47835b2be38d

[XiangShanRobot]

[Generated by GEM5 Performance Robot] commit: 232824712d632171ec1f5d3a56190d3a7a0aa176 workflow: gem5 Performance Test

Standard Performance

Overall Score

	PR	Master	Diff(%)
Score	16.17	16.17	+0.02 🟢

[XiangShanRobot]

[Generated by GEM5 Performance Robot] commit: 232824712d632171ec1f5d3a56190d3a7a0aa176 workflow: gem5 Ideal BTB Performance Test

Ideal BTB Performance

Overall Score

	PR	Master	Diff(%)
Score	19.78	19.49	+1.44 🟢

[XiangShanRobot]

[Generated by GEM5 Performance Robot] commit: 232824712d632171ec1f5d3a56190d3a7a0aa176 workflow: gem5 Simple RVV Performance Test (Ideal BTB)

Ideal BTB Performance

Overall Score

	PR	Master	Diff(%)
Score	19.51	19.13	+2.01 🟢

[XiangShanRobot]

[Generated by GEM5 Performance Robot] commit: eab817030d2dad92d58f0249022949ef55381087 workflow: gem5 Performance Test

Standard Performance

Overall Score

	PR	Previous Commit	Diff(%)
Score	16.14	16.17	-0.22 🔴

[XiangShanRobot]

[Generated by GEM5 Performance Robot] commit: eab817030d2dad92d58f0249022949ef55381087 workflow: gem5 Ideal BTB Performance Test

Ideal BTB Performance

Overall Score

	PR	Master	Diff(%)
Score	20.00	19.99	+0.08 🟢

[Generated by GEM5 Performance Robot] commit: eab817030d2dad92d58f0249022949ef55381087 workflow: gem5 Ideal BTB Performance Test

Ideal BTB Performance

Overall Score

	PR	Previous Commit	Diff(%)
Score	20.00	19.78	+1.15 🟢

[XiangShanRobot]

[Generated by GEM5 Performance Robot] commit: eab817030d2dad92d58f0249022949ef55381087 workflow: gem5 Simple RVV Performance Test (Ideal BTB)

Ideal BTB Performance

Overall Score

	PR	Master	Diff(%)
Score	22.35	22.38	-0.16 🔴

[Generated by GEM5 Performance Robot] commit: eab817030d2dad92d58f0249022949ef55381087 workflow: gem5 Simple RVV Performance Test (Ideal BTB)

Ideal BTB Performance

Overall Score

	PR	Previous Commit	Diff(%)
Score	22.35	19.51	+14.54 🟢