Reland "RegisterCoalescer: Add implicit-def of super register when coalescing SUBREG_TO_REG"#134408

Merged

sdesmalen-arm merged 2 commits intomainfrom

users/sdesmalen-arm/srlt-reland-pr-123632

Jul 30, 2025

Commits on Jul 30, 2025

[RegisterCoalescer] Add implicit-def of super reg when coalescing SUBREG_TO_REG
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Merge branch 'main' into users/sdesmalen-arm/srlt-reland-pr-123632
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