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| author | Oliver Stannard <oliver.stannard@arm.com> | 2014-06-19 15:39:33 +0000 |
|---|---|---|
| committer | Oliver Stannard <oliver.stannard@arm.com> | 2014-06-19 15:39:33 +0000 |
| commit | f7693f4c1f80e2ad4f14b4c2876b2ad5c59f39b2 (patch) | |
| tree | 2a6422550cbe856f1a40b1cef3350ba150450832 /llvm/lib/MC/MCContext.cpp | |
| parent | 4f7ef8c6ef1e33e1eb89f7793d7ed630578b7db7 (diff) | |
| download | bcm5719-llvm-f7693f4c1f80e2ad4f14b4c2876b2ad5c59f39b2.tar.gz bcm5719-llvm-f7693f4c1f80e2ad4f14b4c2876b2ad5c59f39b2.zip | |
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
Diffstat (limited to 'llvm/lib/MC/MCContext.cpp')
0 files changed, 0 insertions, 0 deletions
