Commit Graph

212 Commits

Author SHA1 Message Date
Jeffrey Yasskin
df5a7daff9 Add a JITEventListener interface that gets called back when a new function is
emitted or the machine code for a function is freed.  Chris mentioned that we
may also want a notification when a stub is emitted, but that'll be a future
change.  I intend to use this to tell oprofile where functions are emitted and
what lines correspond to what addresses.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74157 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-25 02:04:04 +00:00
Dan Gohman
ae3a0be92e Split the Add, Sub, and Mul instruction opcodes into separate
integer and floating-point opcodes, introducing
FAdd, FSub, and FMul.

For now, the AsmParser, BitcodeReader, and IRBuilder all preserve
backwards compatability, and the Core LLVM APIs preserve backwards
compatibility for IR producers. Most front-ends won't need to change
immediately.

This implements the first step of the plan outlined here:
http://nondot.org/sabre/LLVMNotes/IntegerOverflow.txt


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72897 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-04 22:49:04 +00:00
Bruno Cardoso Lopes
186c670e15 Use uint8_t and int32_t in {JIT,Machine}CodeEmiters
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72821 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-04 00:15:51 +00:00
Bruno Cardoso Lopes
bae049cd9e Revert 72650
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72783 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-03 16:55:02 +00:00
Bruno Cardoso Lopes
af90a1cd26 Use uint8_t and int32_t in {JIT,Machine}CodeEmiters
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72650 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-30 23:50:33 +00:00
Bruno Cardoso Lopes
a3f99f9033 First patch in the direction of splitting MachineCodeEmitter in two subclasses:
JITCodeEmitter and ObjectCodeEmitter. No functional changes yet. Patch by Aaron Gray



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72631 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-30 20:51:52 +00:00
Argyrios Kyrtzidis
b3a847db0b Allow the JIT ExecutionEngine to report details about the generated machine code.
Introduce a new class (MachineCodeInfo) that the JIT can fill in with details. Right now, just the address and the size of the machine code are reported.

Patch by Evan Phoenix!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72040 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-18 21:06:40 +00:00
Duncan Sands
777d2306b3 Rename PaddedSize to AllocSize, in the hope that this
will make it more obvious what it represents, and stop
it being confused with the StoreSize.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71349 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-09 07:06:46 +00:00
Argyrios Kyrtzidis
19fee415f6 Set FnEnd in JITEmitter::finishFunction to point strictly to the end of function's machine code.
Don't include memory allocated for global variables during relocations resolution.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70517 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-30 23:01:58 +00:00
Nick Lewycky
e2bcf13be5 Under unusual circumstances (jitting a function that causes the creation of
another stub, but then never calling the jitted function) can cause the JIT to
leave a stub in place. Judging by the comments this is a known deficiency, so
we're just not going to use AssertingVH for the StubToFunctionTy map.

Also shorten some lines longer than 80 columns.

This fixes the "make check" failure with ocaml on x86-64 linux.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70185 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-27 05:09:44 +00:00
Nick Lewycky
848b3142ad Use an AssertingVH to detect the case where the Function was deleted but
freeMachineCodeForFunction was never called.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69531 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-19 18:32:03 +00:00
Evan Cheng
1606e8e4cd Fix some significant problems with constant pools that resulted in unnecessary paddings between constant pool entries, larger than necessary alignments (e.g. 8 byte alignment for .literal4 sections), and potentially other issues.
1. ConstantPoolSDNode alignment field is log2 value of the alignment requirement. This is not consistent with other SDNode variants.
2. MachineConstantPool alignment field is also a log2 value.
3. However, some places are creating ConstantPoolSDNode with alignment value rather than log2 values. This creates entries with artificially large alignments, e.g. 256 for SSE vector values.
4. Constant pool entry offsets are computed when they are created. However, asm printer group them by sections. That means the offsets are no longer valid. However, asm printer uses them to determine size of padding between entries.
5. Asm printer uses expensive data structure multimap to track constant pool entries by sections.
6. Asm printer iterate over SmallPtrSet when it's emitting constant pool entries. This is non-deterministic.


Solutions:
1. ConstantPoolSDNode alignment field is changed to keep non-log2 value.
2. MachineConstantPool alignment field is also changed to keep non-log2 value.
3. Functions that create ConstantPool nodes are passing in non-log2 alignments.
4. MachineConstantPoolEntry no longer keeps an offset field. It's replaced with an alignment field. Offsets are not computed when constant pool entries are created. They are computed on the fly in asm printer and JIT.
5. Asm printer uses cheaper data structure to group constant pool entries.
6. Asm printer compute entry offsets after grouping is done.
7. Change JIT code to compute entry offsets on the fly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66875 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-13 07:51:59 +00:00
Nate Begeman
841c6a4345 Allow cross-process JIT to handle MachineRelocations of the ExternalSymbol
variety.  For example, an i64 div might turn into a call to __divdi3 during
legalization.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66646 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-11 07:03:43 +00:00
Nate Begeman
b9c6c9bfe4 Finish cross-process JIT work, and clean up previous work.
1. When the JIT is asked to remove a function, updating it's
   mapping to 0, we invalidate any function stubs used only 
   by that function.  Now, also invalidate the JIT's mapping
   from the GV the stub pointed to, to the address of the GV.

2. When dlsym stubs for cross-process JIT are enabled, do not
   abort just because a named function cannot be found in the
   JIT's process.

3. Fix various assumptions about when it is ok to use the lazy
   resolver when non-lazy JITing is enabled.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66324 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-07 06:41:19 +00:00
Chris Lattner
be3ae8e479 switch this message back to only being in -debug mode.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66143 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-05 06:48:16 +00:00
Nate Begeman
50cd6fda9e When allocating stubs, keep track of which Functions are referencing the stub.
This invalidates the stubs in the resolver map when they are no longer referenced,
and should the JIT memory manager ever pick up a deallocateStub interface, the
JIT could reclaim the memory for unused stubs as well.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66141 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-05 06:34:37 +00:00
Nate Begeman
66941988de Fix a thinko in the JIT where the address of a GV was only recorded in the map
on failure to resolve it.
Do not abort on failure to resolve an external symbol when using dlsym stubs,
  since the symbol may not be in the JIT's address space.  Just use 0.
Allow dlsym stubs to differentiate between GlobalVars and Functions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66050 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-04 19:10:38 +00:00
Nate Begeman
0b82f77e66 Fix the calculation for how big the allocated stub needs to be.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65895 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-02 23:10:14 +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
Duncan Sands
ceb4d1aecb Rename getABITypeSize to getTypePaddedSize, as
suggested by Chris.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62099 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-12 20:38:59 +00:00
Dan Gohman
69f9378675 Handle weak_extern in the JIT. This fixes
SingleSource/UnitTests/2007-04-25-weak.c in JIT mode. The test
now passes on systems which are able to produce a correct
reference output to compare with.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61674 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-05 05:32:42 +00:00
Evan Cheng
5788d1a169 Fix MachineCodeEmitter to use uintptr_t instead of intptr_t. This avoids some overflow issues. Patch by Thomas Jablin.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60828 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-10 02:32:19 +00:00
Evan Cheng
369e02da1b Fix a bug introduced by r59265. If lazy compilation is disabled, return actual function ptr instead of ptr to stub if function is already compiled.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60822 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-10 01:33:59 +00:00
Evan Cheng
704bff9e6c Always emit a function pointer as a pointer to the function stub (if there is one). This makes it possible to compare function pointer values in lazy compilation mode. This fixes PR3043.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59265 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-13 21:50:50 +00:00
Evan Cheng
e7c3551e6f Change binary dump format.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59119 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-12 08:22:43 +00:00
Evan Cheng
e4d783d584 Comments and indentation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59007 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-10 23:26:16 +00:00
Evan Cheng
5594f120b8 Forgot these.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58952 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-10 01:52:24 +00:00
Evan Cheng
fff484f192 Remove a InvalidateInstructionCache call with incorrect size.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58898 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-08 08:15:39 +00:00
Evan Cheng
ce4a70bd76 Rename startFunctionStub to startGVStub since it's also used for GV non-lazy ptr.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58897 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-08 08:02:53 +00:00
Evan Cheng
d7398c9b69 Rename isString -> isExternalSymbol; getString -> getExternalSymbol since these work on externsym machine relocations.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58895 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-08 07:37:34 +00:00
Evan Cheng
ca66b08bc6 More debug output.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58894 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-08 07:22:53 +00:00
Evan Cheng
366cf29ca5 More debug output.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58868 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-07 22:30:29 +00:00
Evan Cheng
47c01a0099 Jump tables may be emitted by target.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58835 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-07 09:02:17 +00:00
Evan Cheng
eb5d95a22d Improve JIT debugging outputs format consistency.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58807 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-06 17:46:04 +00:00
Evan Cheng
6863fb033a Need a \n.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58788 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-06 01:18:29 +00:00
Evan Cheng
a7916f586d Undo 58778 but makes the binary dump prettier.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58782 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-05 23:44:08 +00:00
Evan Cheng
5e136c0f37 Remove debug output that's not really useful.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58778 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-05 23:21:11 +00:00
Evan Cheng
c96a8e7df1 Rename isGVLazyPtr to isGVNonLazyPtr relocation. This represents Mac OS X
indirect gv reference. Please don't call it lazy.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58746 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-05 01:50:32 +00:00
Evan Cheng
9200605cd5 Silence a compiler warning.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58598 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-03 07:14:02 +00:00
Jim Grosbach
8fe95356dd Revert errant deletion. The target needs to be able to specify that it doesn't want the generic constant pool to be emitted.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58475 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-30 23:44:39 +00:00
Evan Cheng
ef5784ef9b Let target resolve some relocation results.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58407 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-29 23:54:46 +00:00
Jim Grosbach
bc6d876adf Support for constant islands in the ARM JIT.
Since the ARM constant pool handling supercedes the standard LLVM constant
pool entirely, the JIT emitter does not allocate space for the constants,
nor initialize the memory. The constant pool is considered part of the 
instruction stream.

Likewise, when resolving relocations into the constant pool, a hook into
the target back end is used to resolve from the constant ID# to the
address where the constant is stored.

For now, the support in the ARM emitter is limited to 32-bit integer. Future
patches will expand this to the full range of constants necessary.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58338 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-28 18:25:49 +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
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
Dan Gohman
d735b8019b Switch the MachineOperand accessors back to the short names like
isReg, etc., from isRegister, etc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57006 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-03 15:45:36 +00:00
Nicolas Geoffray
dcb31e1790 Acquire the lock only when necessary. More precisely, do not acquire
the lock when calling a method which may materialize the llvm::Function.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56995 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-03 07:27:08 +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
Anton Korobeynikov
19e861a4ff Make safer variant of alias resolution routine to be default
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56005 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-09 20:05:04 +00:00
Evan Cheng
252ddfbdbc MMI may be null.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55626 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-02 08:14:01 +00:00
Evan Cheng
a044dfcb5a Get rid of a couple of dynamic_cast.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55022 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-20 00:28:12 +00:00