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* Fixing the stack walker.Gordon Henriksen2008-01-241-4/+7
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46302 91177308-0d34-0410-b5e6-96231b3b80d8
* With this patch, the LowerGC transformation becomes theGordon Henriksen2008-01-071-15/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ShadowStackCollector, which additionally has reduced overhead with no sacrifice in portability. Considering a function @fun with 8 loop-local roots, ShadowStackCollector introduces the following overhead (x86): ; shadowstack prologue movl L_llvm_gc_root_chain$non_lazy_ptr, %eax movl (%eax), %ecx movl $___gc_fun, 20(%esp) movl $0, 24(%esp) movl $0, 28(%esp) movl $0, 32(%esp) movl $0, 36(%esp) movl $0, 40(%esp) movl $0, 44(%esp) movl $0, 48(%esp) movl $0, 52(%esp) movl %ecx, 16(%esp) leal 16(%esp), %ecx movl %ecx, (%eax) ; shadowstack loop overhead (none) ; shadowstack epilogue movl 48(%esp), %edx movl %edx, (%ecx) ; shadowstack metadata .align 3 ___gc_fun: # __gc_fun .long 8 .space 4 In comparison to LowerGC: ; lowergc prologue movl L_llvm_gc_root_chain$non_lazy_ptr, %eax movl (%eax), %ecx movl %ecx, 48(%esp) movl $8, 52(%esp) movl $0, 60(%esp) movl $0, 56(%esp) movl $0, 68(%esp) movl $0, 64(%esp) movl $0, 76(%esp) movl $0, 72(%esp) movl $0, 84(%esp) movl $0, 80(%esp) movl $0, 92(%esp) movl $0, 88(%esp) movl $0, 100(%esp) movl $0, 96(%esp) movl $0, 108(%esp) movl $0, 104(%esp) movl $0, 116(%esp) movl $0, 112(%esp) ; lowergc loop overhead leal 44(%esp), %eax movl %eax, 56(%esp) leal 40(%esp), %eax movl %eax, 64(%esp) leal 36(%esp), %eax movl %eax, 72(%esp) leal 32(%esp), %eax movl %eax, 80(%esp) leal 28(%esp), %eax movl %eax, 88(%esp) leal 24(%esp), %eax movl %eax, 96(%esp) leal 20(%esp), %eax movl %eax, 104(%esp) leal 16(%esp), %eax movl %eax, 112(%esp) ; lowergc epilogue movl 48(%esp), %edx movl %edx, (%ecx) ; lowergc metadata (none) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45670 91177308-0d34-0410-b5e6-96231b3b80d8
* remove attribution from a variety of miscellaneous files.Chris Lattner2007-12-292-4/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45425 91177308-0d34-0410-b5e6-96231b3b80d8
* remove attributions from the rest of the llvm makefiles.Chris Lattner2007-12-292-4/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45416 91177308-0d34-0410-b5e6-96231b3b80d8
* GarbageCollection.html is expanded to encompass the comingGordon Henriksen2007-09-271-0/+5
| | | | | | | capabilities. This is a major rewrite and is easier to read en toto rather than patchwise. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42414 91177308-0d34-0410-b5e6-96231b3b80d8
* Undo removal of the runtime libraries. While this may have been a bitReid Spencer2006-11-175-0/+215
| | | | | | | | premature, these libraries will be going away for the 2.0 release. Other arrangements for profiling, gc, etc. should be made in the next few months. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31807 91177308-0d34-0410-b5e6-96231b3b80d8
* In LLVM 2.0 we won't use the runtime libraries as llvm-gcc3 support willReid Spencer2006-11-165-215/+0
| | | | | | | be dropped. This patch pertains to removing the runtime directory from LLVM. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31793 91177308-0d34-0410-b5e6-96231b3b80d8
* Use archive libraries instead of object files for VMCore, BCReader,Reid Spencer2006-06-011-0/+2
| | | | | | | | BCWriter, and bzip2 libraries. Adjust the various makefiles to accommodate these changes. This was done to speed up link times. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28610 91177308-0d34-0410-b5e6-96231b3b80d8
* This never got updated to reflect the project makefile changesChris Lattner2005-10-181-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23789 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove trailing whitespaceMisha Brukman2005-04-211-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21427 91177308-0d34-0410-b5e6-96231b3b80d8
* For PR432:Reid Spencer2004-12-221-1/+1
| | | | | | | * Variable name change: cferuntime_libdir -> CFERuntimeLibDir git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19096 91177308-0d34-0410-b5e6-96231b3b80d8
* Use the new BYTECODE_DESTINATION to override the default bytecode installReid Spencer2004-12-131-1/+1
| | | | | | | | | | destination for this library so that it goes to $(cferuntime_libdir) rather than just $(libdir). Normal bytecode libraries should be installed in the $(libdir), but these ones are "special" because they're part of the the C/C++ front end. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18882 91177308-0d34-0410-b5e6-96231b3b80d8
* Standardize the makefiles with space around = to match the rest of LLVM.Reid Spencer2004-12-021-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18429 91177308-0d34-0410-b5e6-96231b3b80d8
* Add EXTRA_DIST for additional files to be distributed.Reid Spencer2004-10-261-0/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17233 91177308-0d34-0410-b5e6-96231b3b80d8
* We're not doing automake any moreReid Spencer2004-10-222-1314/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17168 91177308-0d34-0410-b5e6-96231b3b80d8
* Adjust to changes in Makefile.rulesReid Spencer2004-10-221-3/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17167 91177308-0d34-0410-b5e6-96231b3b80d8
* We won't use automakeReid Spencer2004-10-222-32/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17155 91177308-0d34-0410-b5e6-96231b3b80d8
* Initial automake generated Makefile templateReid Spencer2004-10-182-0/+1314
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17136 91177308-0d34-0410-b5e6-96231b3b80d8
* Initial Makefile.am for building with automakeReid Spencer2004-10-172-0/+32
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17073 91177308-0d34-0410-b5e6-96231b3b80d8
* Do not mention Chris in public MakefilesMisha Brukman2004-08-091-3/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15591 91177308-0d34-0410-b5e6-96231b3b80d8
* Update GC intrinsics to take a pointer to the object as well as a pointerChris Lattner2004-07-222-4/+4
| | | | | | | to the field being updated. Patch contributed by Tobias Nurmiranta git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15097 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix warning on 64-bit machinesBrian Gaeke2004-07-161-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14902 91177308-0d34-0410-b5e6-96231b3b80d8
* Continue the implementationChris Lattner2004-05-271-37/+61
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13818 91177308-0d34-0410-b5e6-96231b3b80d8
* A few more microstepsChris Lattner2004-05-271-1/+7
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13817 91177308-0d34-0410-b5e6-96231b3b80d8
* Eliminate warningsAlkis Evlogimenos2004-05-231-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13704 91177308-0d34-0410-b5e6-96231b3b80d8
* Initial checkin of GC implementation support filesChris Lattner2004-05-233-0/+69
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13700 91177308-0d34-0410-b5e6-96231b3b80d8
* Check in an EARLY START on a simple copying collectorChris Lattner2004-05-232-0/+117
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13698 91177308-0d34-0410-b5e6-96231b3b80d8
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