rdar://105689397 The OMG entry tier-up path clobbers GPRInfo::argumentGPR0 and GPRInfo::argumentGPR1, but while we will track argument locals as live currently, we don't actively spill to preserve them across the call in the new BBQ baseline JIT, only at the end of the current basic block. We also don't pass whether the current function is a SIMD function to the tier-up thunk generator.
Looks like Yusuke beat me to the punch on the clobbers...I'll adapt this bug to track specifically the SIMD parameter.
(fixing the argument register clobbering is tracked in https://bugs.webkit.org/show_bug.cgi?id=252591)
Pull request: https://github.com/WebKit/WebKit/pull/10383
Committed 260562@main (f6adb7641317): <https://commits.webkit.org/260562@main> Reviewed commits have been landed. Closing PR #10383 and removing active labels.