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
..
Hello	Set LLVM_EXPORTED_SYMBOL_FILE in CMakeLists whose corresponding Makefiles do so.	2013-12-29 23:06:49 +00:00
InstCombine	Fix two cases where we could lose fast math flags when optimizing FADD expressions.	2014-01-16 21:26:02 +00:00
Instrumentation	[asan] extend asan-coverage (still experimental).	2014-01-17 11:00:30 +00:00
IPO	Make nocapture analysis work with addrspacecast	2014-01-14 19:11:52 +00:00
ObjCARC	[PM] Split DominatorTree into a concrete analysis result object which	2014-01-13 13:07:17 +00:00
Scalar	[opt][PassInfo] Allow opt to run passes that need target machine.	2014-01-16 21:44:34 +00:00
Utils	Switch-to-lookup tables: set threshold to 3 cases	2014-01-15 05:00:27 +00:00
Vectorize	LoopVectorize: Only strip casts from integer types when replacing symbolic	2014-01-15 03:35:46 +00:00
CMakeLists.txt	Extracted ObjCARC.cpp into its own library libLLVMObjCARCOpts in preparation for refactoring the ARC Optimizer.	2013-01-28 01:35:51 +00:00
LLVMBuild.txt	Extracted ObjCARC.cpp into its own library libLLVMObjCARCOpts in preparation for refactoring the ARC Optimizer.	2013-01-28 01:35:51 +00:00
Makefile	Extracted ObjCARC.cpp into its own library libLLVMObjCARCOpts in preparation for refactoring the ARC Optimizer.	2013-01-28 01:35:51 +00:00