mirror of
https://git.freebsd.org/ports.git
synced 2025-06-14 17:20:29 -04:00
d38df13120
This adds all the patches that were applied in the past to the clang700-import branch, under contrib/llvm. After these, there only minimal diffs left between the port sources and the base sources. Most of these remaining diffs are due to #ifdef shortcuts in the base sources, because we don't compile certain features in. Other diffs are because the port has applied a few changes that we don't have in base. Also switch to the common LICENSE defintion in devel/llvm-devel and chase new USE_GNOME requirements (for libxml2). PR: 212343, 230604 Submitted by: dim MFH: 2018Q4 Differential Revision: https://reviews.freebsd.org/D17709
33 lines
1.3 KiB
Diff
33 lines
1.3 KiB
Diff
r308867 | dim | 2016-11-19 22:05:17 +0100 (Sat, 19 Nov 2016) | 15 lines
|
|
|
|
Work around LLVM PR30879, which is about a bad interaction between X86
|
|
Call Frame Optimization on i386 and libunwind, by disallowing the
|
|
optimization for i386-freebsd12.
|
|
|
|
This should fix some instances of broken exception handling when frame
|
|
pointers are omitted, in particular some unittests run during the build
|
|
of editors/libreoffice.
|
|
|
|
This hack will be removed as soon as upstream has implemented a more
|
|
permanent fix for this problem.
|
|
|
|
Upstream PR: https://llvm.org/bugs/show_bug.cgi?id=30879
|
|
Reviewed by: emaste
|
|
PR: 212343
|
|
|
|
Index: lib/Target/X86/X86CallFrameOptimization.cpp
|
|
===================================================================
|
|
--- lib/Target/X86/X86CallFrameOptimization.cpp (revision 308866)
|
|
+++ lib/Target/X86/X86CallFrameOptimization.cpp (revision 308867)
|
|
@@ -125,6 +125,11 @@ bool X86CallFrameOptimization::isLegal(MachineFunc
|
|
if (NoX86CFOpt.getValue())
|
|
return false;
|
|
|
|
+ // Work around LLVM PR30879 (bad interaction between CFO and libunwind)
|
|
+ if (STI->isTargetFreeBSD() && STI->is32Bit() &&
|
|
+ STI->getTargetTriple().getOSMajorVersion() >= 12)
|
|
+ return false;
|
|
+
|
|
// We can't encode multiple DW_CFA_GNU_args_size or DW_CFA_def_cfa_offset
|
|
// in the compact unwind encoding that Darwin uses. So, bail if there
|
|
// is a danger of that being generated.
|