llvm-project

Commit Graph

Author	SHA1	Message	Date
Michael Liao	6f7206132f	Fix setjmp on models with non-Small code model nor non-Static relocation model - MBB address is only valid as an immediate value in Small & Static code/relocation models. On other models, LEA is needed to load IP address of the restore MBB. - A minor fix of MBB in MC lowering is added as well to enable target relocation flag being propagated into MC. llvm-svn: 166084	2012-10-17 02:22:27 +00:00
Michael Liao	97bf363a9e	Add __builtin_setjmp/_longjmp supprt in X86 backend - Besides used in SjLj exception handling, __builtin_setjmp/__longjmp is also used as a light-weight replacement of setjmp/longjmp which are used to implementation continuation, user-level threading, and etc. The support added in this patch ONLY addresses this usage and is NOT intended to support SjLj exception handling as zero-cost DWARF exception handling is used by default in X86. llvm-svn: 165989	2012-10-15 22:39:43 +00:00

Author

SHA1

Message

Date

Michael Liao

6f7206132f

Fix setjmp on models with non-Small code model nor non-Static relocation model

- MBB address is only valid as an immediate value in Small & Static
  code/relocation models. On other models, LEA is needed to load IP address of
  the restore MBB.
- A minor fix of MBB in MC lowering is added as well to enable target
  relocation flag being propagated into MC.

llvm-svn: 166084

2012-10-17 02:22:27 +00:00

Michael Liao

97bf363a9e

Add __builtin_setjmp/_longjmp supprt in X86 backend

- Besides used in SjLj exception handling, __builtin_setjmp/__longjmp is also
  used as a light-weight replacement of setjmp/longjmp which are used to
  implementation continuation, user-level threading, and etc. The support added
  in this patch ONLY addresses this usage and is NOT intended to support SjLj
  exception handling as zero-cost DWARF exception handling is used by default
  in X86.

llvm-svn: 165989

2012-10-15 22:39:43 +00:00

2 Commits