Squash reported bugs

[Jackcuii]

No description provided.

[Copilot]

Pull request overview

Adds a ReLU testbench/program and extends the emulator to support additional ops and updated exit behavior, intended to address reported functional issues.

Changes:

• Add ReLU testbench YAML program + DFG and a runnable Go testbench driver.
• Extend core emulator with SEL and ICMP_SGE, restructure return handling with an “exit delay”, and improve an OOB store panic message.
• Minor tweaks to histogram testbench output printing.

Reviewed changes

Copilot reviewed 7 out of 8 changed files in this pull request and generated 15 comments.

Show a summary per file

File	Description
test/testbench/relu/relu.yaml	Adds a ReLU instruction schedule/program for a 4x4 array.
test/testbench/relu/relu-dfg.yaml	Adds the corresponding DFG for the ReLU program.
test/testbench/relu/main.go	Adds a runnable ReLU testbench driver that loads the YAML and runs the sim.
test/testbench/histogram/main.go	Adjusts printing logic and adds commented import line.
core/emu.go	Adds SEL + ICMP_SGE, changes return/exit handling, and adds several debug prints.
core/builder.go	Threads a new shared exit-request timestamp pointer into core state.
config/config.go	Initializes and wires the shared exit-request timestamp for all cores.

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[Copilot]

Build copies b.exitReqAddr into coreState.requestExitTimestamp, but exitReqAddr is optional and can be nil. Since runRet/RunInstructionGroup dereference this pointer, Build should ensure it is always non-nil (e.g., default to an internal float64 when nil) to avoid runtime panics for API consumers.

[Copilot]

@n0thingNoob I've opened a new pull request, #37, to work on those changes. Once the pull request is ready, I'll request review from you.

[n0thingNoob]

How does this PR fix the phi_start bug when there are multiple phi_start in one core?