Commit Graph

3 Commits

Author SHA1 Message Date
Rafael Espindola a7c3163cdf Use CIE version 1 for .eh_frame.
According to

http://www.linuxbase.org/betaspecs/lsb/LSB-Core-generic/LSB-Core-generic/ehframechpt.html

we should always use 1.

llvm-svn: 235923
2015-04-27 22:04:24 +00:00
Oliver Stannard f7693f4c1f Emit DWARF3 call frame information when DWARF3+ debug info is requested
Currently, llvm always emits a DWARF CIE with a version of 1, even when emitting
DWARF 3 or 4, which both support CIE version 3. This patch makes it emit the
newer CIE version when we are emitting DWARF 3 or 4. This will not reduce
compatibility, as we already emit other DWARF3/4 features, and is worth doing as
the DWARF3 spec removed some ambiguities in the interpretation of call frame
information.

It also fixes a minor bug where the "return address" field of the CIE was
encoded as a ULEB128, which is only valid when the CIE version is 3. There are
no test changes for this, because (as far as I can tell) none of the platforms
that we test have a return address register with a DWARF register number >127.

llvm-svn: 211272
2014-06-19 15:39:33 +00:00
Ulrich Weigand 08bd6154d9 [SystemZ] Add DebugInfo test cases
This adds all DebugInfo tests for the SystemZ target.

This version of the patch incorporates feedback from reviews by
Eric Christopher and Rafael Espindola.  Thanks to all reviewers!

Patch by Richard Sandiford.

llvm-svn: 181205
2013-05-06 16:18:29 +00:00