Commit Graph

7 Commits

Author SHA1 Message Date
Andrew Browne dbf8c00b09 [DFSan] Remove trampolines to unblock opaque pointers. (Reland with fix)
https://github.com/llvm/llvm-project/issues/54172

Reviewed By: pcc

Differential Revision: https://reviews.llvm.org/D121250
2022-03-14 16:03:25 -07:00
Andrew Browne edc33fa569 Revert "[DFSan] Remove trampolines to unblock opaque pointers."
This reverts commit 84af90336f.
2022-03-14 13:47:41 -07:00
Andrew Browne 84af90336f [DFSan] Remove trampolines to unblock opaque pointers.
https://github.com/llvm/llvm-project/issues/54172

Reviewed By: pcc

Differential Revision: https://reviews.llvm.org/D121250
2022-03-14 13:39:49 -07:00
Andrew Browne 61ec2148c5 [DFSan] Remove -dfsan-args-abi support in favor of TLS.
ArgsABI was originally added in https://reviews.llvm.org/D965

Current benchmarking does not show a significant difference.
There is no need to maintain both ABIs.

Reviewed By: pcc

Differential Revision: https://reviews.llvm.org/D111097
2021-10-08 11:18:36 -07:00
George Balatsouras c6b5a25eeb [dfsan] Replace dfs$ prefix with .dfsan suffix
The current naming scheme adds the `dfs$` prefix to all
DFSan-instrumented functions.  This breaks mangling and prevents stack
trace printers and other tools from automatically demangling function
names.

This new naming scheme is mangling-compatible, with the `.dfsan`
suffix being a vendor-specific suffix:
https://itanium-cxx-abi.github.io/cxx-abi/abi.html#mangling-structure

With this fix, demangling utils would work out-of-the-box.

Reviewed By: stephan.yichao.zhao

Differential Revision: https://reviews.llvm.org/D104494
2021-06-17 22:42:47 -07:00
George Balatsouras bd99f23260 [dfsan] Increase coverage of vector and select tests
Add more expectations in vector.ll and select.ll based on command-line option combinations.
Also, remove hard-coded shadow width references to enable fast8 transition.

Reviewed By: stephan.yichao.zhao

Differential Revision: https://reviews.llvm.org/D97903
2021-03-04 12:56:55 -08:00
Peter Collingbourne 32f5405bff Fix DataFlowSanitizer instrumentation pass to take parameter position changes into account for custom functions.
When DataFlowSanitizer transforms a call to a custom function, the
new call has extra parameters. The attributes on parameters must be
updated to take the new position of each parameter into account.

Patch by Sam Kerner!

Differential Revision: https://reviews.llvm.org/D43132

llvm-svn: 325820
2018-02-22 19:09:07 +00:00