createInlineAsm:avoid mapupdate collect after call

[luoliwoshang]

fixed #5008

Problem:
The original code used a break statement inside a switch within a for loop, which only exited the switch but continued processing subsequent MapUpdate operations. This led to AsmFull returning register values from map updates that happened after the function call, violating the expected behavior.

Solution:

• Stops processing when encountering the AsmFull call itself

[eliasnaur]

Probably for @aykevl

[eliasnaur]

Instead of extracting collectInlineAsmRegisters, why not name the outer loop and use break <name>? Something like:

referrers:
    for _, r := range *registerMap.Referrers() {
...
        if r.Common() == instr {
	        break referrers
        }

[luoliwoshang]

Thanks for the great suggestion! You're absolutely right - using labeled break is cleaner and more idiomatic. I've updated the code accordingly. I initially went with function extraction due to personal preference, but your approach is definitely better with fewer code changes. Thanks for the review!

[eliasnaur]

The test disappeared, was that on purpose? Also, please squash the two "goto" and "named break" commits into one.

Probably @aykevl for the meat of this change.

[luoliwoshang]

The test disappeared, was that on purpose? Also, please squash the two "goto" and "named break" commits into one.

I have merged the two commits into one. I temporarily removed the added tests to confirm whether the test failure issue is only coming from the CI environment. I will add back the tests shortly.

[luoliwoshang]

Hey @aykevl! 👋 I found a little bug in TinyGo and managed to fix it - would love to get your eyes on the PR when you have a moment!
Thanks for building such an awesome project! TinyGo makes embedded Go so much fun, and I'd love to be part of the contributor community