Commit Graph

208 Commits

Author SHA1 Message Date
Andrew Kaylor 527c5dc68d Adding implementation to outline C++ catch handlers for native Windows 64 exception handling.
Differential Revision: http://reviews.llvm.org/D7363

llvm-svn: 229715
2015-02-18 18:31:51 +00:00
Reid Kleckner 96d011315a Don't promote asynch EH invokes of nounwind functions to calls
If the landingpad of the invoke is using a personality function that
catches asynch exceptions, then it can catch a trap.

Also add some landingpads to invalid LLVM IR test cases that lack them.

Over-the-shoulder reviewed by David Majnemer.

llvm-svn: 228782
2015-02-11 01:23:16 +00:00
Alexey Samsonov 964f4dbaae Fix memory leak in WinEHPrepare introduced in r227405.
This leak was detected by ASan bootstrap of LLVM.

llvm-svn: 227625
2015-01-30 22:07:05 +00:00
Reid Kleckner 2a2235087f Update comments to use unreachable instead of llvm.trap, as implemented now
llvm-svn: 227502
2015-01-29 22:32:26 +00:00
Benjamin Kramer eb63e4d6f8 EHPrepare: Remove leftover initialization code for DomTrees.
While there modernize some loops. NFC.

llvm-svn: 227436
2015-01-29 13:26:50 +00:00
Chandler Carruth a1a622746e Remove an unused private field added r227405 to fix a Clang warning.
llvm-svn: 227415
2015-01-29 02:44:53 +00:00
Reid Kleckner 8fcb0ad8a6 Remove unused variable
llvm-svn: 227408
2015-01-29 00:55:44 +00:00
Reid Kleckner 1185fced3d Add a Windows EH preparation pass that zaps resumes
If the personality is not a recognized MSVC personality function, this
pass delegates to the dwarf EH preparation pass. This chaining supports
people on *-windows-itanium or *-windows-gnu targets.

Currently this recognizes some personalities used by MSVC and turns
resume instructions into traps to avoid link errors.  Even if cleanups
are not used in the source program, LLVM requires the frontend to emit a
code path that resumes unwinding after an exception.  Clang does this,
and we get unreachable resume instructions. PR20300 covers cleaning up
these unreachable calls to resume.

Reviewers: majnemer

Differential Revision: http://reviews.llvm.org/D7216

llvm-svn: 227405
2015-01-29 00:41:44 +00:00