[sanitizer] Minor 32-bit primary improvements

Description

[sanitizer] Minor 32-bit primary improvements

Summary:
For the 32-bit TransferBatch:

  • SetFromArray callers have bounds count, so relax the CHECK to DCHECK;
  • same for Add;
  • mark CopyToArray as const;

For the 32-bit Primary:

  • {Dea,A}llocateBatch are only called from places that check class_id, relax the CHECK to DCHECK;
  • same for AllocateRegion;
  • remove GetRegionBeginBySizeClass that is not used;
  • use a local variable for the random shuffle state, so that the compiler can use a register instead of reading and writing to the SizeClassInfo at every iteration;

For the 32-bit local cache:

  • pass the count to drain instead of doing a Min everytime which is at times superfluous.

Reviewers: alekseyshl

Reviewed By: alekseyshl

Subscribers: kubamracek, delcypher, #sanitizers, llvm-commits

Differential Revision: https://reviews.llvm.org/D46657

Details

Committed
cryptoadWed, May 16, 8:13 AM
Reviewer
alekseyshl
Differential Revision
D46657: [sanitizer] Minor 32-bit primary improvements
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