Commit Graph

17 Commits

Author SHA1 Message Date
Dan Gohman
de551f91d8 Use CHAR_BIT instead of hard-coding 8 in several places where it
is appropriate. This helps visually differentiate host-oriented
calculations from target-oriented calculations.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68227 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-01 18:45:54 +00:00
Chris Lattner
96c96b46e9 Fix PR3724 by searching for the largest free block when
allocating memory in the JIT.  This is insanely inefficient, but
hey, most people implement their own memory managers anyway.

Patch by Eric Yew!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66472 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-09 21:34:10 +00:00
Nate Begeman
d6b7a242d3 Add support to the JIT for true non-lazy operation. When a call to a function
that has not been JIT'd yet, the callee is put on a list of pending functions
to JIT.  The call is directed through a stub, which is updated with the address
of the function after it has been JIT'd.  A new interface for allocating and
updating empty stubs is provided.

Add support for removing the ModuleProvider the JIT was created with, which
would otherwise invalidate the JIT's PassManager, which is initialized with the
ModuleProvider's Module.

Add support under a new ExecutionEngine flag for emitting the infomration 
necessary to update Function and GlobalVariable stubs after JITing them, by
recording the address of the stub and the name of the GlobalValue.  This allows
code to be copied from one address space to another, where libraries may live
at different virtual addresses, and have the stubs updated with their new
correct target addresses.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64906 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-18 08:31:02 +00:00
Nuno Lopes
cef7527a85 fix a tricky bug in the JIT global variable emitter, that was triggered when JITing a variable independently of a function. This lead to sharing memory memory between functions and GVs thus changing the value of a GV could change the code in execution. more details on the ML.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57900 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-21 11:42:16 +00:00
Duncan Sands
4520dd2b7b Add <cstdio> include where needed by gcc-4.4.
Patch by Samuel Tardieu.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57291 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-08 07:23:46 +00:00
Jim Grosbach
cce6c297c5 On Darwin ARM, memory needs special handling to do JIT. This patch expands
this handling to work properly for modifying stub functions, relocations
back to entry points after JIT compilation, etc..


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57013 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-03 16:17:20 +00:00
Evan Cheng
bc4707a255 Preliminary support for systems which require changing JIT memory regions privilege from read / write to read / executable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56303 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-18 07:54:21 +00:00
Dale Johannesen
dd947ea3c5 Rewrite JIT handling of GlobalVariables so they
are allocated in the same buffer as the code,
jump tables, etc.

The default JIT memory manager does not handle buffer
overflow well.  I didn't introduce this and I'm not
attempting to fix it here, but it is more likely to
be hit now since we're putting more stuff in the
buffer.  This affects one test that I know of so far,
MultiSource/Benchmarks/NPB-serial/is.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54442 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-07 01:30:15 +00:00
Evan Cheng
60b75f462e Fix for PR2578. Do not split off a block whose size is less than FreeRangeHeader::getMinBlockSize(). Patch by Damien.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54152 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-29 07:38:32 +00:00
Dan Gohman
933e51c5e3 Use static_cast instead of reinterpret_cast for casting void*.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52592 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-21 20:17:03 +00:00
Nicolas Geoffray
51cc3c13ea Correlate stubs with functions in JIT: when emitting a stub, the JIT tells the memory manager which function
the stub will resolve.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49814 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-16 20:46:05 +00:00
Chris Lattner
0fdaa0b8f1 fix 80 col violations
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48019 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-07 20:05:43 +00:00
Anton Korobeynikov
ae9f3a3b7c Unbreak build with gcc 4.3: provide missed includes and silence most annoying warnings.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47367 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-20 11:08:44 +00:00
Nicolas Geoffray
afe6c2b001 Enable exception handling int JIT
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47079 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 18:39:37 +00:00
Chris Lattner
4ee451de36 Remove attribution from file headers, per discussion on llvmdev.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45418 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-29 20:36:04 +00:00
Chuck Rose III
3012ac63d3 Adjust VStudio files to add JITMemoryManager files + include <cassert> from same.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44651 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-06 02:03:01 +00:00
Chris Lattner
8907b4ba47 split the JIT memory management code out from the main JIT logic into its
own JITMemoryManager interface.  There is no functionality change with 
this patch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44640 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-05 23:39:57 +00:00