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17fdaccc

Commit 17fdaccc authored 2 years ago by Arthur Eubanks

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[CaptureTracking] Ignore ephemeral values when determining pointer escapeness

Ephemeral values cannot cause a pointer to escape.

No change in compile time:
https://llvm-compile-time-tracker.com/compare.php?from=4371710085ba1c376a094948b806ddd3b88319de&to=c5ddbcc4866f38026737762ee8d7b9b00395d4f4&stat=instructions

This partially fixes some regressions caused by more calls to `__builtin_assume` (D122397).

Reviewed By: asbirlea

Differential Revision: https://reviews.llvm.org/D123162

parent 26d974dc

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llvm/include/llvm/Analysis/CaptureTracking.h 7 additions, 0 deletions

llvm/include/llvm/Analysis/CaptureTracking.h
llvm/lib/Analysis/CaptureTracking.cpp 23 additions, 5 deletions

llvm/lib/Analysis/CaptureTracking.cpp
llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp 20 additions, 7 deletions

llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp
llvm/test/Transforms/DeadStoreElimination/assume.ll 0 additions, 1 deletion

llvm/test/Transforms/DeadStoreElimination/assume.ll

with 50 additions and 13 deletions

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