Commit Graph

939 Commits

Author SHA1 Message Date
Benjamin Kramer
7bd19af7c3 Fix a struct/class mismatch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82622 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-23 11:48:57 +00:00
Chris Lattner
c72efbeb42 errorstr can be null, don't unconditionally set it. Only report that
"the jit has not been linked in" if the interpreter failed.

This fixes a unit test failure.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82601 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-23 02:03:49 +00:00
Chris Lattner
fbd39762e9 Make EngineBuilder return more error codes, by KS Sreeram.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82600 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-23 01:46:04 +00:00
Daniel Dunbar
4473c2d0ff Use Compiler.h macro instead of __attribute__.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82532 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-22 07:38:23 +00:00
Xerxes Ranby
c2f4fa3c96 Update cmake.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82449 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-21 08:08:29 +00:00
Daniel Dunbar
003de66227 Register the MachineModuleInfo for the ARM JIT, and update JITDwarfEmitter to
assert if the setModuleInfo hasn't been called.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82441 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-21 05:58:35 +00:00
Reid Kleckner
2763217fbd Implement the JIT side of the GDB JIT debugging interface. To enable this
feature, either build the JIT in debug mode to enable it by default or pass
-jit-emit-debug to lli.

Right now, the only debug information that this communicates to GDB is call
frame information, since it's already being generated to support exceptions in
the JIT.  Eventually, when DWARF generation isn't tied so tightly to AsmPrinter,
it will be easy to push that information to GDB through this interface.

Here's a step-by-step breakdown of how the feature works:

- The JIT generates the machine code and DWARF call frame info
  (.eh_frame/.debug_frame) for a function into memory.
- The JIT copies that info into an in-memory ELF file with a symbol for the
  function.
- The JIT creates a code entry pointing to the ELF buffer and adds it to a
  linked list hanging off of a global descriptor at a special symbol that GDB
  knows about.
- The JIT calls a function marked noinline that GDB knows about and has put an
  internal breakpoint in.
- GDB catches the breakpoint and reads the global descriptor to look for new
  code.
- When sees there is new code, it reads the ELF from the inferior's memory and
  adds it to itself as an object file.
- The JIT continues, and the next time we stop the program, we are able to
  produce a proper backtrace.

Consider running the following program through the JIT:

#include <stdio.h>
void baz(short z) {
  long w = z + 1;
  printf("%d, %x\n", w, *((int*)NULL));  // SEGFAULT here
}
void bar(short y) {
  int z = y + 1;
  baz(z);
}
void foo(char x) {
  short y = x + 1;
  bar(y);
}
int main(int argc, char** argv) {
  char x = 1;
  foo(x);
}

Here is a backtrace before this patch:
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x2aaaabdfbd10 (LWP 25476)]
0x00002aaaabe7d1a8 in ?? ()
(gdb) bt
#0  0x00002aaaabe7d1a8 in ?? ()
#1  0x0000000000000003 in ?? ()
#2  0x0000000000000004 in ?? ()
#3  0x00032aaaabe7cfd0 in ?? ()
#4  0x00002aaaabe7d12c in ?? ()
#5  0x00022aaa00000003 in ?? ()
#6  0x00002aaaabe7d0aa in ?? ()
#7  0x01000002abe7cff0 in ?? ()
#8  0x00002aaaabe7d02c in ?? ()
#9  0x0100000000000001 in ?? ()
#10 0x00000000014388e0 in ?? ()
#11 0x00007fff00000001 in ?? ()
#12 0x0000000000b870a2 in llvm::JIT::runFunction (this=0x1405b70,
F=0x14024e0, ArgValues=@0x7fffffffe050)
   at /home/rnk/llvm-gdb/lib/ExecutionEngine/JIT/JIT.cpp:395
#13 0x0000000000baa4c5 in llvm::ExecutionEngine::runFunctionAsMain
(this=0x1405b70, Fn=0x14024e0, argv=@0x13f06f8, envp=0x7fffffffe3b0)
   at /home/rnk/llvm-gdb/lib/ExecutionEngine/ExecutionEngine.cpp:377
#14 0x00000000007ebd52 in main (argc=2, argv=0x7fffffffe398,
envp=0x7fffffffe3b0) at /home/rnk/llvm-gdb/tools/lli/lli.cpp:208

And a backtrace after this patch:
Program received signal SIGSEGV, Segmentation fault.
0x00002aaaabe7d1a8 in baz ()
(gdb) bt
#0  0x00002aaaabe7d1a8 in baz ()
#1  0x00002aaaabe7d12c in bar ()
#2  0x00002aaaabe7d0aa in foo ()
#3  0x00002aaaabe7d02c in main ()
#4  0x0000000000b870a2 in llvm::JIT::runFunction (this=0x1405b70,
F=0x14024e0, ArgValues=...)
   at /home/rnk/llvm-gdb/lib/ExecutionEngine/JIT/JIT.cpp:395
#5  0x0000000000baa4c5 in llvm::ExecutionEngine::runFunctionAsMain
(this=0x1405b70, Fn=0x14024e0, argv=..., envp=0x7fffffffe3c0)
   at /home/rnk/llvm-gdb/lib/ExecutionEngine/ExecutionEngine.cpp:377
#6  0x00000000007ebd52 in main (argc=2, argv=0x7fffffffe3a8,
envp=0x7fffffffe3c0) at /home/rnk/llvm-gdb/tools/lli/lli.cpp:208


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82418 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-20 23:52:43 +00:00
Nick Lewycky
7de3bd273e Stop using alloca.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82225 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-18 16:46:16 +00:00
Daniel Dunbar
e4a5743d87 Some platforms may need malloc.h for alloca.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82100 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-17 00:14:44 +00:00
Chris Lattner
b107fc15fc remove a dead variable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81985 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-16 01:29:11 +00:00
Bill Wendling
9d48b555e2 Fix PR4865. This syncs up the JIT's DWARF emitter with what's in the
'DwarfException.cpp' file, which changed how CIEs were emitted, the sizes of
some fields, etc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81295 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-09 00:11:02 +00:00
Daniel Dunbar
0247656d0a Improve JIT error message for users crazy enough to use -march with JIT, and
mention -version in messages about missing targets.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81272 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-08 23:32:35 +00:00
Evan Cheng
94f07d8137 Fix PR4845: r77946 completely broke x86_64 Darwin (or any situation where the
desired triplet is a sub-target, e.g. thumbv7 vs. arm host). Reverting the
patch isn't quite right either since the previous behavior does not allow the
triplet to be overridden with -march.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80742 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-02 00:19:03 +00:00
Jeffrey Yasskin
91dc33ae8f Fix OProfile support after r80406 changed the DebugInfo interface from
GlobalVariables to MDNodes.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80411 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-29 00:44:16 +00:00
Dan Gohman
5b78d50cad Initialize the PoisonMemory member before initializing
members that call methods that read the PoisonMemory member.
This fixes potential spurious (though probably otherwise
harmless) poising of unused memory, and fixes the
associated valgrind error.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80192 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-27 01:25:57 +00:00
Xerxes Ranby
3d47db50b3 Fix PR4772 ARM JIT.GlobalInFuction unittest by explicitly initialize MMI
to 0 during JITEmitter constructor.

Modified:
	lib/ExecutionEngine/JIT/JITEmitter.cpp



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79982 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-25 10:12:55 +00:00
Chris Lattner
3bc14202ab just remove interpreter support for endianness mismatches. This was
really old code from when we were running sparcv9 bc files on x86
(before I ported llvm-gcc 3 to work on x86) :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79871 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-23 22:50:28 +00:00
Chris Lattner
9f3ff92ca8 remove use of alloca.h
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79870 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-23 22:49:13 +00:00
Chris Lattner
d9ea85ab01 remove some uses of llvm/Support/Streams.h
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79842 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-23 08:43:55 +00:00
Chris Lattner
bbbfa99d3d remove a few DOUTs here and there.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79832 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-23 06:35:02 +00:00
Chris Lattner
79c5d3f971 remove the std::ostream version of module and type printing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79823 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-23 04:52:46 +00:00
Chris Lattner
bdff548e4d eliminate the "Value" printing methods that print to a std::ostream.
This required converting a bunch of stuff off DOUT and other cleanups.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79819 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-23 04:37:46 +00:00
Chris Lattner
af76e592c7 Rename TargetAsmInfo (and its subclasses) to MCAsmInfo.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79763 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-22 20:48:53 +00:00
Reid Kleckner
01248e6711 Fix a bug where the DWARF emitter in the JIT was not initializing alignment
bytes.  libgcc doesn't seem to mind, but if you pass this DWARF to GDB, it
doesn't like it.  

Also make the JIT memory manager to initialize it's memory to garbage in debug
mode, so that it's easier to find bugs like these in the future.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79674 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-21 21:03:57 +00:00
Owen Anderson
1d0be15f89 Push LLVMContexts through the IntegerType APIs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78948 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-13 21:58:54 +00:00
Dan Gohman
a9ad04191c This void is implicit in C++.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78848 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-12 22:10:57 +00:00
Jim Grosbach
1b747ad8a0 SjLj based exception handling unwinding support. This patch is nasty, brutish
and short. Well, it's kinda short. Definitely nasty and brutish.

The front-end generates the register/unregister calls into the SjLj runtime,
call-site indices and landing pad dispatch. The back end fills in the LSDA
with the call-site information provided by the front end. Catch blocks are
not yet implemented.

Built on Darwin and verified no llvm-core "make check" regressions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78625 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-11 00:09:57 +00:00
Daniel Dunbar
482cccd37e MSVC warning fixes; patch by Stein Roger!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78405 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-07 20:50:09 +00:00
Jeffrey Yasskin
0d5bd59553 To catch bugs like the one fixed in
http://llvm.org/viewvc/llvm-project?view=rev&revision=78127, I'm changing the
ExecutionEngine's global mappings to hold AssertingVH<const GlobalValue>. That
way, if unregistering a mapping fails to actually unregister it, we'll get an
assert. Running the jit nightly tests didn't uncover any actual instances of
the problem.

This also uncovered the fact that AssertingVH<const X> didn't work, so I fixed
that too.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78400 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-07 19:54:29 +00:00
Dan Gohman
7db949df78 Fix a bunch of namespace pollution.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78363 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-07 01:32:21 +00:00
Jeffrey Yasskin
0a962314fb Make ExecutionEngine::updateGlobalMapping(GV, NULL) properly remove GV's old
address from the reverse mapping, and add a test that this works now.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78127 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-04 23:53:16 +00:00
Daniel Dunbar
4b3d57228c No really, it's unused.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78047 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-04 04:08:40 +00:00
Benjamin Kramer
d5fe92efbc llvm_report_error already prints "LLVM ERROR:". So stop reporting errors like "LLVM ERROR: llvm: error:" or "LLVM ERROR: ERROR:".
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77971 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-03 13:33:33 +00:00
Daniel Dunbar
4bd03abe59 Remove now unused arguments from TargetRegistry::lookupTarget.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77950 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-03 04:20:57 +00:00
Daniel Dunbar
3c2d4bf97f Pass target triple string in to TargetMachine constructor.
This is not just a matter of passing in the target triple from the module;
currently backends are making decisions based on the build and host
architecture. The goal is to migrate to making these decisions based off of the
triple (in conjunction with the feature string). Thus most clients pass in the
target triple, or the host triple if that is empty.

This has one important change in the way behavior of the JIT and llc.

For the JIT, it was previously selecting the Target based on the host
(naturally), but it was setting the target machine features based on the triple
from the module. Now it is setting the target machine features based on the
triple of the host.

For LLC, -march was previously only used to select the target, the target
machine features were initialized from the module's triple (which may have been
empty). Now the target triple is taken from the module, or the host's triple is
used if that is empty. Then the triple is adjusted to match -march.

The take away is that -march for llc is now used in conjunction with the host
triple to initialize the subtarget. If users want more deterministic behavior
from llc, they should use -mtriple, or set the triple in the input module.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77946 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-03 04:03:51 +00:00
Nick Lewycky
a9a03f9c12 Fix the build for people with oprofile installed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77914 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-02 20:51:44 +00:00
Nicolas Geoffray
1b10d798d7 In TrimAllocationToSize, if a block is below the minimum allocation size,
there is no new block added to the free list. Therefore on the next
startFunctionBody call, a new slab must be allocated.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77520 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-29 22:55:02 +00:00
Owen Anderson
debcb01b0f Move types back to the 2.5 API.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77516 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-29 22:17:13 +00:00
Owen Anderson
baf3c40440 Move ConstantExpr to 2.5 API.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77494 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-29 18:55:55 +00:00
Owen Anderson
6f83c9c6ef Move ConstantFP construction back to the 2.5-ish API.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77247 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-27 20:59:43 +00:00
Daniel Dunbar
460f656475 Remove Value::getName{Start,End}, the last of the old Name APIs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77152 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-26 09:48:23 +00:00
Daniel Dunbar
93b67e40de Eliminate some uses of DOUT, cerr, and getNameStart().
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77145 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-26 07:49:05 +00:00
Daniel Dunbar
d6fd377f33 Simplify JIT target selection.
- Instead of requiring targets to define a JIT quality match function, we just
   have them specify if they support a JIT.

 - Target selection for the JIT just gets the host triple and looks for the best
   target which matches the triple and has a JIT.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77060 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-25 10:09:50 +00:00
Daniel Dunbar
ce63ffb52f More migration to raw_ostream, the water has dried up around the iostream hole.
- Some clients which used DOUT have moved to DEBUG. We are deprecating the
   "magic" DOUT behavior which avoided calling printing functions when the
   statement was disabled. In addition to being unnecessary magic, it had the
   downside of leaving code in -Asserts builds, and of hiding potentially
   unnecessary computations.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77019 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-25 00:23:56 +00:00
Owen Anderson
eed707b1e6 Revert the ConstantInt constructors back to their 2.5 forms where possible, thanks to contexts-on-types. More to come.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77011 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-24 23:12:02 +00:00
Daniel Dunbar
f6ccee5a9d Switch to getNameStr().
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76962 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-24 08:24:36 +00:00
Reid Kleckner
10b4fc552f Re-committing r76828 with the JIT memory manager changes now that the build
bots like the BumpPtrAllocator changes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76902 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-23 21:46:56 +00:00
Reid Kleckner
4bf370698a Reverting r76825 and r76828, since they caused clang runtime errors and some build failure involving memset.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76838 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-23 01:40:54 +00:00
Reid Kleckner
81ce3ed08c Make the JIT code emitter properly retry and ask for more memory when it runs
out of memory, and also make the default memory manager allocate more memory
when it runs out.

Also, switch function stubs and global data over to using the BumpPtrAllocator.

This makes it so the JIT no longer mmaps (or the equivalent on Windows) 16 MB
of memory, and instead allocates in 512K slabs.  I suspect this size could go
lower, especially on embedded platforms, now that more slabs can be allocated.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76828 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-23 00:49:59 +00:00
Daniel Dunbar
8f60302ee5 Simplify some uses of Value::getName()
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76786 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-22 21:10:12 +00:00