Kostya Serebryany bd2c711cdd [asan] extend asan-coverage (still experimental). ... - add a mode for collecting per-block coverage (-asan-coverage=2). So far the implementation is naive (all blocks are instrumented), the performance overhead on top of asan could be as high as 30%. - Make sure the one-time calls to __sanitizer_cov are moved to function buttom, which in turn required to copy the original debug info into the call insn. Here is the performance data on SPEC 2006 (train data, comparing asan with asan-coverage={0,1,2}): asan+cov0 asan+cov1 diff 0-1 asan+cov2 diff 0-2 diff 1-2 400.perlbench, 65.60, 65.80, 1.00, 76.20, 1.16, 1.16 401.bzip2, 65.10, 65.50, 1.01, 75.90, 1.17, 1.16 403.gcc, 1.64, 1.69, 1.03, 2.04, 1.24, 1.21 429.mcf, 21.90, 22.60, 1.03, 23.20, 1.06, 1.03 445.gobmk, 166.00, 169.00, 1.02, 205.00, 1.23, 1.21 456.hmmer, 88.30, 87.90, 1.00, 91.00, 1.03, 1.04 458.sjeng, 210.00, 222.00, 1.06, 258.00, 1.23, 1.16 462.libquantum, 1.73, 1.75, 1.01, 2.11, 1.22, 1.21 464.h264ref, 147.00, 152.00, 1.03, 160.00, 1.09, 1.05 471.omnetpp, 115.00, 116.00, 1.01, 140.00, 1.22, 1.21 473.astar, 133.00, 131.00, 0.98, 142.00, 1.07, 1.08 483.xalancbmk, 118.00, 120.00, 1.02, 154.00, 1.31, 1.28 433.milc, 19.80, 20.00, 1.01, 20.10, 1.02, 1.01 444.namd, 16.20, 16.20, 1.00, 17.60, 1.09, 1.09 447.dealII, 41.80, 42.20, 1.01, 43.50, 1.04, 1.03 450.soplex, 7.51, 7.82, 1.04, 8.25, 1.10, 1.05 453.povray, 14.00, 14.40, 1.03, 15.80, 1.13, 1.10 470.lbm, 33.30, 34.10, 1.02, 34.10, 1.02, 1.00 482.sphinx3, 12.40, 12.30, 0.99, 13.00, 1.05, 1.06 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199488 91177308-0d34-0410-b5e6-96231b3b80d8		2014-01-17 11:00:30 +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-vs-gvn.ll	[asan] Optimize accesses to global arrays with constant index	2013-10-16 14:06:14 +00:00
basic.ll	[asan] rewrite asan's stack frame layout	2013-12-06 09:00:17 +00:00
coverage.ll	[asan] extend asan-coverage (still experimental).	2014-01-17 11:00:30 +00:00
debug_info.ll	Debug Info: update testing cases to specify the debug info version number.	2013-11-22 21:49:45 +00:00
different_scale_and_offset.ll
do-not-instrument-internal-globals.ll	[ASan] Fix the tests broken by r198018 to check for private linkage of ASan-generated globals.	2013-12-25 17:06:04 +00:00
do-not-touch-odr-global.ll
do-not-touch-threadlocal.ll
instrument_global.ll	[asan] Optimize accesses to global arrays with constant index	2013-10-16 14:06:14 +00:00
instrument_initializer_metadata.ll
instrument_load_then_store.ll
instrument-no-return.ll
keep-instrumented_functions.ll	[asan] add option -asan-keep-uninstrumented-functions	2013-06-26 09:18:17 +00:00
lifetime-uar.ll	[ASan] Fix PR17867 - make sure ASan doesn't crash if use-after-scope and use-after-return are combined.	2013-11-18 14:53:55 +00:00
lifetime.ll	[ASan] Fix PR17867 - make sure ASan doesn't crash if use-after-scope and use-after-return are combined.	2013-11-18 14:53:55 +00:00
stack_layout.ll	[ASan] Fix the tests broken by r198018 to check for private linkage of ASan-generated globals.	2013-12-25 17:06:04 +00:00
stack-poisoning.ll	[asan] don't unpoison redzones on function exit in use-after-return mode.	2013-12-23 14:15:08 +00:00
test64.ll