pre-commit: PR145016

[zyw-bot]

Link: llvm/llvm-project#145016
Requested by: @dtcxzyw

[zyw-bot]

Diff mode

runner: ariselab-64c-docker
baseline: llvm/llvm-project@77941eb
patch: llvm/llvm-project#145016
sha256: f14e7c296757dcdb6fc3c5bbb12794def611ea91515f926badf22baefa24ec2a
commit: 72533bb

5 files changed, 343 insertions(+), 343 deletions(-)

1 1 bench/linux/optimized/dm-raid1.ll
56 56 bench/linux/optimized/flow_dissector.ll
3 3 bench/linux/optimized/intel_crtc_state_dump.ll

[github-actions]

The provided LLVM IR diff modifies several functions across three different benchmark files, primarily focusing on reordering or renaming of basic blocks and PHI nodes. Below is a high-level summary of the up to 5 most significant changes:

1. PHI Node Source Adjustments in dm-raid1.ll:

   • In mirror_status, a PHI node was updated to reference a different predecessor block (%.loopexit25 instead of %.loopexit24). This indicates minor control flow restructuring without altering logic.

2. Control Flow Graph (CFG) Rerouting in flow_dissector.ll:

   • Multiple PHI instructions were updated to reference new incoming blocks (e.g., .thread61, .thread66, .thread70, etc.). These suggest that certain switch cases or landing pads have been rerouted, likely due to function layout optimization or inlining decisions.

3. Switch Target Relabeling in flow_dissector.ll:

   • Several switch instructions now target new labels (e.g., switching to .thread110 instead of .thread116). This implies function splitting or cold section partitioning has occurred, changing how execution paths are grouped or ordered.

4. Landing Pad and PHI Operand Reassociation:

   • In multiple locations within flow_dissector.ll, landing pads for unwind edges were updated (e.g., %..thread86_crit_edge) and associated PHI nodes adjusted accordingly. These reflect changes in exception handling or control flow integrity metadata.

5. Loop Unrolling or Splitting in intel_crtc_state_dump.ll:

   • Loop-related blocks such as .split30.us had their PHI nodes retargeted to updated loop headers (e.g., .split34.us). This suggests loop unrolling, splitting, or layout optimization which improves performance through better cache utilization or scheduling.

Overall Summary:
These changes represent internal CFG refinements, including block reordering, landing pad updates, and PHI operand adjustments. They likely stem from optimizations like function layout, loop transformation, or control flow simplification, with no semantic change to the program logic.

model: qwen-plus-latest
CompletionUsage(completion_tokens=443, prompt_tokens=14000, total_tokens=14443, completion_tokens_details=None, prompt_tokens_details=None)