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10 Commits

Author SHA1 Message Date
Manman Ren 4f755deaf6 TBAA: use the same format for scalar TBAA and struct-path aware TBAA. 
An updated version of r191586 with bug fix.

Struct-path aware TBAA generates tags to specify the access path,
while scalar TBAA only generates tags to scalar types.

We should not generate a TBAA tag with null being the first field. When
a TBAA type node is null, the tag should be null too. Make sure we
don't decorate an instruction with a null TBAA tag.

Added a testing case for the bug reported by Richard with -relaxed-aliasing
and -fsanitizer=thread.

llvm-svn: 192145
 2013-10-08 00:08:49 +00:00
Richard Smith e4aaac506c Revert r191586 and r191695. They cause crashes when building with 
-relaxed-aliasing.

llvm-svn: 191725
 2013-10-01 02:20:23 +00:00
Manman Ren 4f04263347 TBAA: use the same format for scalar TBAA and struct-path aware TBAA. 
Struct-path aware TBAA generates tags to specify the access path,
while scalar TBAA only generates tags to scalar types.

llvm-svn: 191586
 2013-09-27 23:06:41 +00:00
Rafael Espindola ff7cea8c1a Don't pass -O0 to clang_cc1, it is the default. 
llvm-svn: 189910
 2013-09-04 04:12:25 +00:00
Richard Smith b1b0ab41e7 Use the individual -fsanitize=<...> arguments to control which of the UBSan 
checks to enable. Remove frontend support for -fcatch-undefined-behavior,
-faddress-sanitizer and -fthread-sanitizer now that they don't do anything.

llvm-svn: 167413
 2012-11-05 22:21:05 +00:00
Kostya Serebryany f6645c8071 fix test/CodeGen/tbaa-for-vptr.cpp: don't hardcode the index of metadata 
llvm-svn: 164928
 2012-10-01 08:39:00 +00:00
Kostya Serebryany 5dd2cfc81e enable TBAA when -fthread-sanitizer is given, even with -O0 or -relaxed-aliasing 
llvm-svn: 155430
 2012-04-24 06:57:01 +00:00
Duncan Sands c720e78ebc Use MDBuilder to help with metadata creation. 
llvm-svn: 154767
 2012-04-15 18:04:54 +00:00
Daniel Dunbar eec0abefb6 [tests] Fix test failure in release mode. 
llvm-svn: 153460
 2012-03-26 20:18:16 +00:00
Kostya Serebryany 141e46faf0 add tbaa metadata to vtable pointer loads/stores 
llvm-svn: 153447
 2012-03-26 17:03:51 +00:00