Commit Graph

2 Commits

Author SHA1 Message Date
David Majnemer ad2986efce Parse: Don't attempt to act on #pragma init_seg when not targeting MSVC
It doesn't really make sense to try and do stuff with #pragma init_seg
when targeting non-Microsoft platforms; notions like library vs user
initializers don't exist for other targets.

This fixes PR20639.

llvm-svn: 215618
2014-08-14 06:35:08 +00:00
Reid Kleckner 1a711b1696 -fms-extensions: Implement half of #pragma init_seg
Summary:
This pragma is very rare.  We could *hypothetically* lower some uses of
it down to @llvm.global_ctors, but given that GlobalOpt isn't able to
optimize prioritized global ctors today, there's really no point.

If we wanted to do this in the future, I would check if the section used
in the pragma started with ".CRT$XC" and had up to two characters after
it.  Those two characters could form the 16-bit initialization priority
that we support in @llvm.global_ctors.  We would have to teach LLVM to
lower prioritized global ctors on COFF as well.

This should let us compile some silly uses of this pragma in WebKit /
Blink.

Reviewers: rsmith, majnemer

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D4549

llvm-svn: 213593
2014-07-22 00:53:05 +00:00