[PATCH] D21594: [esan|cfrag] Add counters for struct array accesses

[Qin Zhao via llvm-commits]

zhaoqin created this revision.
zhaoqin added a reviewer: aizatsky.
zhaoqin added subscribers: vitalybuka, zhaoqin, kcc, eugenis, bruening, llvm-commits.

Adds one counter to the struct field counter array for counting struct
array accesses.

Adds instrumentation to insert counter update for struct array
accesses.

http://reviews.llvm.org/D21594

Files:
  lib/Transforms/Instrumentation/EfficiencySanitizer.cpp
  test/Instrumentation/EfficiencySanitizer/struct_field_count_basic.ll
  test/Instrumentation/EfficiencySanitizer/struct_field_gep.ll

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