search for: coptimize

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2017 Feb 18
2
[RFC] Using Intel MPX to harden SafeStack
...ng: 292141 from January 16, 2017 - Compiler-RT: 291346 from January 7, 2017 The patched compiler was built with the current posted versions of my patches applied on top of the SVN IDs listed above. The following compiler settings in the SPEC CPU2006 cfg files were used for each configuration: COPTIMIZE: - Unpatched Base: -std=gnu89 -O2 -fno-strict-aliasing -march=skylake -mtune=skylake - Unpatched/Patched SafeStack: -std=gnu89 -O2 -fno-strict-aliasing -march=skylake -mtune=skylake -fsanitize=safe-stack - MPX: -std=gnu89 -O2 -fno-strict-aliasing -march=skylake -mtune=skylake -mseparate-stack...
2018 Sep 05
2
AddressSanitizer on SPECCPU2006
Hi I am using SanitizerCoverage feature supported by clang to get the basicblock coverage. my tested binaries are spec cpu2006. I compiled the binary with the option COPTIMIZE = -O0 -fsanitize=address -fsanitize-coverage=bb -flto -fno-strict-aliasing -std=gnu89 -gdwarf-3 After the compiling process is end. I run the 400.perlbench. with the command ASAN_OPTIONS=coverage=1 ./perlbench. However, the AddressSanitizer detect the global buffer overflow and I could not run...
2018 Sep 05
2
AddressSanitizer on SPECCPU2006
...vm-dev > <llvm-dev at lists.llvm.org> wrote: > > > > Hi > > > > I am using SanitizerCoverage feature supported by clang to get the > basicblock coverage. > > > > my tested binaries are spec cpu2006. I compiled the binary with the > option > > COPTIMIZE = -O0 -fsanitize=address -fsanitize-coverage=bb -flto > -fno-strict-aliasing -std=gnu89 -gdwarf-3 > > > > After the compiling process is end. I run the 400.perlbench. with the > command > > ASAN_OPTIONS=coverage=1 ./perlbench. However, the AddressSanitizer > detect the...
2018 Sep 05
2
AddressSanitizer on SPECCPU2006
...> > > >> > Hi > >> > > >> > I am using SanitizerCoverage feature supported by clang to get the > basicblock coverage. > >> > > >> > my tested binaries are spec cpu2006. I compiled the binary with the > option > >> > COPTIMIZE = -O0 -fsanitize=address -fsanitize-coverage=bb -flto > -fno-strict-aliasing -std=gnu89 -gdwarf-3 > >> > > >> > After the compiling process is end. I run the 400.perlbench. with > the command > >> > ASAN_OPTIONS=coverage=1 ./perlbench. However, the Addre...
2017 Feb 08
4
[RFC] Using Intel MPX to harden SafeStack
Hi, I previously posted about using 32-bit X86 segmentation to harden SafeStack: http://lists.llvm.org/pipermail/llvm-dev/2016-May/100346.html That involves lowering the limits of the DS and ES segments that are used for ordinary data accesses while leaving the limit for SS, the stack segment, set to its maximum value. The safe stacks were clustered above the limits of DS and ES. Thus, by