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Kostya Serebryany 2ae1ed1c8f [asan] Optimize accesses to global arrays with constant index

Summary:
Given a global array G[N], which is declared in this CU and has static initializer
avoid instrumenting accesses like G[i], where 'i' is a constant and 0<=i<N.
Also add a bit of stats.

This eliminates ~1% of instrumentations on SPEC2006
and also partially helps when asan is being run together with coverage.

Reviewers: samsonov

Reviewed By: samsonov

CC: llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D1947

llvm-svn: 192794

2013-10-16 14:06:14 +00:00

X86

TBAA: handle scalar TBAA format and struct-path aware TBAA format.

2013-09-27 18:34:27 +00:00

adaptive_global_redzones.ll

[asan] adaptive redzones for globals (the larger the global the larger is the redzone)

2013-01-24 10:35:40 +00:00

asan-vs-gvn.ll

[asan] Optimize accesses to global arrays with constant index

2013-10-16 14:06:14 +00:00

basic.ll

[asan] workaround for PR16277: don't instrument AllocaInstr with alignment more than the redzone size