opt -std-compile-opts drops "gc" attribute

[llvmbot]

Bugzilla Link	1878
Resolution	FIXED
Resolved on	Dec 25, 2007 20:48
Version	trunk
OS	All
Attachments	Armin's input
Reporter	LLVM Bugzilla Contributor
CC	@asl

Extended Description

Armin Rigo reports from the PyPy project:

Here is what appears to be another bug of 'opt': the "gc" annotation is sometimes lost, or so it seems. With the following input (140k gzip):

http://wyvern.cs.uni-duesseldorf.de/~arigo/new_entrypoint.ll.gz

and the following command:

llvm-as < new_entrypoint.ll | opt -std-compile-opts > new_entrypoint.bc

then llvm-dis shows that in the .bc file, the function @​pypy_SemiSpaceGC_malloc_varsize_clear has lost its gc "gcrootsingle" attribute.

I'll need to do some further investigation to reduce the input and discover which pass is at fault.

[llvmbot]

Fixed here:

http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20071224/056598.html http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20071224/056599.html