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- abi: structs of any size by value (AAPCS32), even-register alignment - sra: frame objects to scalars (narrow/wide/partial fields, pointer VARs, whole copies, struct returns, by-value args as words) - inline: called-once inlining, small leaves, nested bodies, struct params - frame: lifetime-based colouring, slot sharing, relayout, dead objects - regalloc: spill-slot reuse, eviction by cost, spill splitting, r8-r11 for call-crossing values, coalescing fixes - thumb/arm: LDM/STM copies, UXT/SXT, UMAAL, IT-block MOV, inline atomics, module-local calls keep R9, word-copy stubs, inline const-size copies - size: -Os/-Oz size tier, machine outliner, cross-jump tail/case merge, self_store, sret_nrvo, branch narrowing with pool dumps and pads - loops: IVSR sliding windows, bottom-test, branch-target alignment, unroll - lib: ARMv8-M mem* in assembly, fast 64-bit division - frontend: __has_attribute, __has_builtin, overflow builtins, dropped unused statics, fputs/printf lowering, __builtin_unreachable - compile time: quadratic passes made linear (zig.c -O2 3m21 -> 47s) - build: unity TUs, big files split, dead passes removed, ASan opt-in, device self-compile heap 37.4 -> 5.5 MB - YAFF v3/v4 headers; many self-host and Zig-compiler miscompile fixes Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- unity: groups follow source directories, with large ones cut by hand in source/unity/groups.txt, instead of packing by line count; predefine headers are generated before gen_unity. - Free Sym facts that outlive their scope or belong to nested-function capture syms (ASan leak in CI building lib/armeabi.c). - barrel_shift: require a single def and no jump target between the shift and its consumer; it runs pre-SSA and miscompiled ctags. Test 608_barrel_shift_join_multidef. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
const_local_table now promotes the constant-initialised struct to a read-only table, the reads fold before entry_store and esp_cleanup never ran. Re-storing one field keeps it on the stack. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Every discovery site passed timeout=30, overriding GCCTestCase's 30 * ASAN_TIMEOUT_MULTIPLIER default, so ASan CI got 30 s and limits-caselabels (21-30 s on the runner) timed out. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Co-Authored-By: Claude Opus 5.5 noreply@anthropic.com