| commit | aeec2c6e489364525a1c293248b7657d7e07726f | [log] [tgz] |
|---|---|---|
| author | Igor Kirillov <igor.kirillov@arm.com> | Thu Jun 26 22:40:48 2025 +0100 |
| committer | GitHub <noreply@github.com> | Thu Jun 26 22:40:48 2025 +0100 |
| tree | e122377131f2b1884afcd26d618cb5f0262654c5 | |
| parent | e811383f335353e7fec8f8ea77bb18dfc40e72b2 [diff] |
[VPlan] Speed up VPSlotTracker by using ModuleSlotTracker (#139881) Currently, when VPSlotTracker is initialized with a VPlan, its assignName method calls printAsOperand on each underlying instruction. Each such call recomputes slot numbers for the entire function, leading to O(N × M) complexity, where M is the number of instructions in the loop and N is the number of instructions in the function. This results in slow debug output for large loops. For example, printing costs of all instructions becomes O(M² × N), which is especially painful when enabling verbose dumps. This patch improves debugging performance by caching slot numbers using ModuleSlotTracker. It avoids redundant recomputation and makes debug output significantly faster.
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