bugc: fix optimizer for nested call arguments in recursion#208
Merged
gnidan merged 1 commit intocall-returnfrom Apr 2, 2026
Merged
bugc: fix optimizer for nested call arguments in recursion#208gnidan merged 1 commit intocall-returnfrom
gnidan merged 1 commit intocall-returnfrom
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Move phi resolution from target blocks to predecessor blocks (standard phi deconstruction). The previous approach resolved phis at the target using the layout-order predecessor, which broke for back-edges where the runtime predecessor differs. Also fixes jump optimization eliminating phi-bearing blocks and rewrites TCO to use a pre_entry trampoline with phis on the original entry block.
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Summary
Fixes the level 2+ optimizer failure with nested call arguments like
count(succ(n), target).