Commit Graph

8 Commits

Author SHA1 Message Date
Tim Northover a009a60a91 IR: print value numbers for unnamed function arguments
For consistency with normal instructions and clarity when reading IR,
it's best to print the %0, %1, ... names of function arguments in
definitions.

Also modifies the parser to accept IR in that form for obvious reasons.

llvm-svn: 367755
2019-08-03 14:28:34 +00:00
Evgeniy Stepanov 1a8030e737 [cfi] Emit __cfi_check stub in the frontend.
Previously __cfi_check was created in LTO optimization pipeline, which
means LLD has no way of knowing about the existence of this symbol
without rescanning the LTO output object. As a result, LLD fails to
export __cfi_check, even when given --export-dynamic-symbol flag.

llvm-svn: 299806
2017-04-07 23:00:38 +00:00
Peter Collingbourne 8dd14da0dc CodeGen: Update Clang to use the new type metadata.
Differential Revision: http://reviews.llvm.org/D21054

llvm-svn: 273730
2016-06-24 21:21:46 +00:00
Nirav Dave e585b5c52b Fix broken tests from no-jump-table commit
Summary: Fix failing tests from no-jump-table flag addition

Reviewers: jyknight

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D18801

llvm-svn: 265439
2016-04-05 18:59:37 +00:00
Evgeniy Stepanov 02279ed12d [cfi] Don't emit checks for disabled CFI kinds.
In the cross-DSO CFI mode clang emits __cfi_check_fail that handles
errors triggered from other modules with targets in the current
module. With this change, __cfi_check_fail will handle errors for
CFI kinds that are not enabled in the current module as if they
have the trapping behaviour (-fsanitize-trap=...).

This fixes a bug where some combinations of -fsanitize* flags may
result in a link failure due to a missing sanitizer runtime library
for the diagnostic calls in __cfi_check_fail.

llvm-svn: 263578
2016-03-15 20:19:29 +00:00
Evgeniy Stepanov f31ea30694 [cfi] Safe handling of unaddressable vtable pointers (clang).
Avoid crashing when printing diagnostics for vtable-related CFI
errors. In diagnostic mode, the frontend does an additional check of
the vtable pointer against the set of all known vtable addresses and
lets the runtime handler know if it is safe to inspect the vtable.

http://reviews.llvm.org/D16823

llvm-svn: 259716
2016-02-03 22:18:55 +00:00
Evgeniy Stepanov 2952bf5005 Strengthen cfi-check-fail test.
r258993 allows stricter testing for basic block labels by making
sure that they are always followed by ":". Use this to improve the
test.

llvm-svn: 258997
2016-01-27 22:28:56 +00:00
Evgeniy Stepanov 3fd61df186 [cfi] Cross-DSO CFI diagnostic mode (clang part)
* Runtime diagnostic data for cfi-icall changed to match the rest of
  cfi checks
* Layout of all CFI diagnostic data changed to put Kind at the
  beginning. There is no ABI stability promise yet.
* Call cfi_slowpath_diag instead of cfi_slowpath when needed.
* Emit __cfi_check_fail function, which dispatches a CFI check
  faliure according to trap/recover settings of the current module.
* A tiny driver change to match the way the new handlers are done in
  compiler-rt.

llvm-svn: 258745
2016-01-25 23:34:52 +00:00