pre-commit: PR174739

[zyw-bot]

Link: llvm/llvm-project#174739
Requested by: @antoniofrighetto

[zyw-bot]

Diff mode

runner: ariselab-64c-docker
baseline: llvm/llvm-project@d6fcf47
patch: llvm/llvm-project#174739
sha256: 223159fa60bbc8ae95fe7759a85254f1d1921b649fbac84d5bb0e0fb430b47a3
commit: 45d13c5

90 files changed, 331849 insertions(+), 333158 deletions(-)

Improvements:
  memcpyopt.NumStackMove 123698 -> 123739 +0.03%
  capture-tracking.NumCapturedBefore 16155920 -> 16158978 +0.02%
  instcount.NumIntToPtrInst 371952 -> 371956 +0.00%
  licm.NumPromotionCandidates 583394 -> 583397 +0.00%
  correlated-value-propagation.NumPhis 1238129 -> 1238134 +0.00%
  simplifycfg.NumFoldValueComparisonIntoPredecessors 512362 -> 512364 +0.00%
  instcount.NumSwitchInst 623985 -> 623987 +0.00%
  instcombine.NumPHICSEs 2323108 -> 2323115 +0.00%
  globaldce.NumFunctions 347355 -> 347356 +0.00%
  simplifycfg.NumSinkCommonCode 375779 -> 375780 +0.00%
Regressions:
  capture-tracking.NumNotCapturedBefore 19317429 -> 19315691 -0.01%
  memcpyopt.NumCallSlot 1011065 -> 1010978 -0.01%
  simplifycfg.NumInvokeSetsFormed 53035 -> 53032 -0.01%
  instcount.NumFreezeInst 55879 -> 55876 -0.01%
  simplifycfg.NumInvokesMerged 144556 -> 144550 -0.00%
  instcombine.NumConstProp 155104 -> 155098 -0.00%
  memcpyopt.NumMemCpyInstr 1470866 -> 1470817 -0.00%
  gvn.IsValueFullyAvailableInBlockNumSpeculationsMax 600956 -> 600944 -0.00%
  instcount.NumSelectInst 1779718 -> 1779692 -0.00%
  scalar-evolution.NumExitCountsNotComputed 11926918 -> 11926744 -0.00%

+8 fish-rs/5o5xgybh9xo8acbeboom17uhq.ll
+8 pola-rs/4k9mmppgjee0j2w63yqma6wuu.ll
+8 wireshark/io_graph_dialog.ll
+7 pola-rs/9wkduw3zxryyte19eworhm0fy.ll
+6 zed-rs/9r3tgj00e2sbbyanbvf1oqgns.ll
+4 elfshaker-rs/3a1f053714hdbf2r1u9m19s6u.ll
+4 openssl/ecparam.ll
+4 openssl/pkey.ll
+4 openssl/provider_util.ll
+4 pola-rs/1nb2gyhm0tinqn6ey8ai4djfd.ll
+4 pola-rs/8eussl4v4il1ycklu8l0t5t0e.ll
+4 pola-rs/95o50twkejbrqkhqoqrezl4cq.ll
+4 pola-rs/d3td6wm725z0ntv4qctjf4t3y.ll
+4 pola-rs/eno41myg76h8nryc673zxzdw7.ll
+4 proj/gridshift.ll
+4 ruff-rs/4y0unrlbgjyvysqyc1zrg4crs.ll
+4 uv-rs/0kkhun51krlzy97ykgp5cqxt0.ll
+4 uv-rs/2ws55tyk3c2zn8byx2xtgrvt3.ll
+4 zed-rs/59wnsznecs6we2kopjyje48jo.ll
+4 zed-rs/7z2xfgroq6luy23s4a62wgt90.ll
+4 zed-rs/dd8ztmg64g4x9ypkzwkofy6vi.ll
+4 zed-rs/dm2ksdv5qc85lqu404cluyab5.ll
+2 uv-rs/7rdx96gsz2ozv37i6eyh3cq12.ll
+0 llvm/SemaConcept.ll
+0 openssl/ssl_lib.ll
+0 rust-analyzer-rs/28jcyytu5knrz2fd.ll
+0 zed-rs/d7h2r6mystjn2jzwcl5ofeoiz.ll
-2 actix-rs/3q3jkuswkinqn2en.ll
-4 fish-rs/e69mx4kebbw5h90l2bpw0bwyt.ll
-4 postgres/execIndexing.ll
-4 zed-rs/5x7hg1mlcao6i0r3jb3d14b77.ll
-4 zed-rs/9fdv7qxvc9ek9liffc7407f9x.ll
-7 rust-analyzer-rs/4nrj6o47dqd25wok.ll
-8 delta-rs/264wku5om6u5pdmz.ll
-10 rust-analyzer-rs/hf9vzunhg9aziex.ll
-12 zed-rs/9eq7uj5u4le9a0i68pyu9khnb.ll
-14 typst-rs/4m3ebbqd1xx21e5m.ll
-20 coreutils-rs/n5dhracig0q9az4.ll
-35 meilisearch-rs/3f4k2xees4fvt0r.ll
-83 ockam-rs/2whckd326lu2ah2i.ll

[github-actions]

Here's a concise summary of the major changes in the LLVM IR diff:

1. Removal of Redundant lifetime.start/end Intrinsics: Several functions (e.g., in actix-rs, coreutils-rs, delta-rs, elfshaker-rs) eliminate unnecessary @llvm.lifetime.start.p0 and @llvm.lifetime.end.p0 calls, often replacing them with direct memory operations or reusing existing stack slots—improving code size and eliminating spurious lifetime markers.

2. Stack Slot Reallocation & SROA Refinements: In multiple benchmarks (coreutils-rs, delta-rs, elfshaker-rs, fish-rs, ockam-rs), alloca instructions are reordered or resized (e.g., swapping [40 x i8] ↔ [24 x i8]), and SROA (Scalar Replacement of Aggregates) is refined—e.g., merging or relocating .sroa.* fields into larger or better-aligned stack slots (e.g., %13 instead of %.sroa.5) to improve locality and enable better optimization.

3. Alias Scope Metadata Updates: Significant renumbering and restructuring of !noalias, !alias.scope, and !noalias metadata IDs across modules (coreutils-rs, llvm, meilisearch-rs). This reflects updated alias scope hierarchies—e.g., scopes now correctly associate with argument indices or new function-level scopes—enhancing precision for memory disambiguation.

4. Phi Node and Control Flow Adjustments: Critical phi node updates (e.g., in coreutils-rs’s _ZN3std2io5Write18write_all_vectored...) fix predecessor lists (e.g., %105 → %102, %30 → %30) and correct loop-phi operand sources—ensuring correctness after CFG transformations like loop rotation or sink hoisting.

5. Structural Cleanup in OpenSSL Benchmarks: New alloca %struct.ossl_param_st additions (%11) and corresponding memcpy/construct call adjustments in ecparam.ll and pkey.ll align parameter construction logic and simplify multi-step param setup—replacing cascaded memcpys with more direct usage and improving maintainability.

These changes collectively reflect ongoing optimizations in Rust’s LLVM backend: tighter stack layout, improved alias analysis fidelity, safer lifetime management, and robustness against control-flow and SROA-induced IR inconsistencies.

model: qwen-plus-latest
CompletionUsage(completion_tokens=548, prompt_tokens=114379, total_tokens=114927, completion_tokens_details=None, prompt_tokens_details=None)