Commit Graph

275 Commits

Author SHA1 Message Date
Anton Korobeynikov
d9e3385ced Move getInitialFrameState() to TargetFrameInfo
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119754 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18 23:25:52 +00:00
Anton Korobeynikov
3346491223 First step of huge frame-related refactoring: move emit{Prologue,Epilogue} out of TargetRegisterInfo to TargetFrameInfo, which is definitely much better suitable place
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119097 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-15 00:06:54 +00:00
Cameron Esfahani
ec37b00b17 Recommit 116056, now with the missing file...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116083 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-08 19:24:18 +00:00
Anton Korobeynikov
e7beda183d va_args support for Win64.
Patch by Cameron!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115480 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-03 22:52:07 +00:00
Rafael Espindola
0febc4657b Jim Asked us to move DataLayout on ARM back to the most specialized classes. Do
so and also change X86 for consistency.

Investigating if this can be improved a bit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115469 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-03 18:59:45 +00:00
Anton Korobeynikov
699647cabc Use rip-rel addressing on win64 by default. For this we just
defaults to small pic code model.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111741 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-21 17:21:11 +00:00
Matt Fleming
453db50333 Hookup ELF support for X86.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111173 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-16 18:36:14 +00:00
Benjamin Kramer
c575283675 Print an error message when someone tries -integrated-as on an unsupported target.
- The COFF backend doesn't support MingW/Cygwin at the moment, it'll report an
  error, but it's still much better than random assertions from the MachO backend.
- We want to make ELF the default eventually, it's what the majority of targets use.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110197 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-04 13:16:30 +00:00
Michael J. Spencer
e2195d8b35 Add relax all support to the COFF object streamer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109947 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-31 06:22:29 +00:00
Michael J. Spencer
dfd30187c6 Make MC use Windows COFF on Windows and add tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109494 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-27 06:46:15 +00:00
Jakob Stoklund Olesen
468a2a44e2 Remove the X86::FP_REG_KILL pseudo-instruction and the X86FloatingPointRegKill
pass that inserted it.

It is no longer necessary to limit the live ranges of FP registers to a single
basic block.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108536 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-16 17:41:44 +00:00
Jakob Stoklund Olesen
e928ec9480 Allow x87 FP registers to be alive globally in a function.
FP_REG_KILL instructions are still inserted, but can be disabled by passing
-live-x87 to llc. The X87FPRegKillInserterPass is going to be removed shortly.

CFG edges are partioned into bundles where the x87 stack must be allocated
identically. Code is insertad at the end of each basic block that shuffles the
live FP registers to match the outgoing bundles expectations.

This fix is in preparation for some upcoming register allocator improvements
that may extend the live range of registers beyond a basic block, similar to
LICM. It also provides a nice runtime speedup if you are building with
-mfpmath=387.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108529 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-16 16:38:12 +00:00
Dan Gohman
84023e0fbe Reapply bottom-up fast-isel, with several fixes for x86-32:
- Check getBytesToPopOnReturn().
 - Eschew ST0 and ST1 for return values.
 - Fix the PIC base register initialization so that it doesn't ever
   fail to end up the top of the entry block.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108039 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-10 09:00:22 +00:00
Dan Gohman
14152b480d Reapply r107655 with fixes; insert the pseudo instruction into
the block before calling the expansion hook. And don't
put EFLAGS in a mbb's live-in list twice.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107691 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-06 20:24:04 +00:00
Dan Gohman
258c58cc62 Revert r107655.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107668 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-06 15:49:48 +00:00
Dan Gohman
b81c771c0d Fix a bunch of custom-inserter functions to handle the case where
the pseudo instruction is not at the end of the block.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107655 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-06 15:18:19 +00:00
Matt Fleming
d8a33ddcfe Currently, createMachOStreamer() is invoked directly in llvm-mc which
isn't ideal if we want to be able to use another object file format.

Add a createObjectStreamer() factory method so that the correct object
file streamer can be instantiated for a given target triple.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104318 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-21 12:54:43 +00:00
Dan Gohman
ff7a562751 Implement a bunch more TargetSelectionDAGInfo infrastructure.
Move EmitTargetCodeForMemcpy, EmitTargetCodeForMemset, and
EmitTargetCodeForMemmove out of TargetLowering and into
SelectionDAGInfo to exercise this.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103481 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-11 17:31:57 +00:00
Eric Christopher
f4f06906b8 Revert 102941, we're going to do this via attr and can just
hack the code to turn it off when debugging.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103083 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-05 07:35:59 +00:00
Eric Christopher
0b12348ddf Add an option, defaulting to off, to disable the sse domain crossing opts.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102941 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03 19:54:02 +00:00
Evan Cheng
fe5dcbc27d Trim include.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101978 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-21 01:39:06 +00:00
Jim Grosbach
fa85eb6237 Fix PR6696 and PR6663
When a frame pointer is not otherwise required, and dynamic stack alignment
is necessary solely due to the spilling of a register with larger alignment
requirements than the default stack alignment, the frame pointer can be both
used as a general purpose register and a frame pointer. That goes poorly, for
obvious reasons. This patch brings back a bit of old logic for identifying
the use of such registers and conservatively reserves the frame pointer
during register allocation in such cases.

For now, implement for X86 only since it's 32-bit linux which is hitting this,
and we want a targeted fix for 2.7. As a follow-on, this will be expanded
to handle other targets, as theoretically the problem could arise elsewhere
as well.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100559 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-06 20:26:37 +00:00
Jakob Stoklund Olesen
bfcd61b907 Enable -sse-domain-fix by default. Now with tests!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99954 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-30 22:47:00 +00:00
Jakob Stoklund Olesen
adffc9d20e Revert "Enable -sse-domain-fix by default. What could possibly go wrong?"
Not running 'make check-all' before committing is a bad idea.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99933 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-30 21:36:32 +00:00
Jakob Stoklund Olesen
90b9df4e6f Enable -sse-domain-fix by default. What could possibly go wrong?
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99931 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-30 21:09:31 +00:00
Jakob Stoklund Olesen
352aa503fa Add a late SSEDomainFix pass that twiddles SSE instructions to avoid domain crossings.
On Nehalem and newer CPUs there is a 2 cycle latency penalty on using a register
in a different domain than where it was defined. Some instructions have
equvivalents for different domains, like por/orps/orpd.

The SSEDomainFix pass tries to minimize the number of domain crossings by
changing between equvivalent opcodes where possible.

This is a work in progress, in particular the pass doesn't do anything yet. SSE
instructions are tagged with their execution domain in TableGen using the last
two bits of TSFlags. Note that not all instructions are tagged correctly. Life
just isn't that simple.

The SSE execution domain issue is very similar to the ARM NEON/VFP pipeline
issue handled by NEONMoveFixPass. This pass may become target independent to
handle both.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99524 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-25 17:25:00 +00:00
Jakob Stoklund Olesen
fe4b92baf1 Revert "Add a late SSEDomainFix pass that twiddles SSE instructions to avoid domain crossings."
This reverts commit 99345. It was breaking buildbots.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99352 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-23 23:48:51 +00:00
Jakob Stoklund Olesen
c75c5fa125 Add a late SSEDomainFix pass that twiddles SSE instructions to avoid domain crossings.
This is work in progress. So far, SSE execution domain tables are added to
X86InstrInfo, and a skeleton pass is enabled with -sse-domain-fix.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99345 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-23 23:14:44 +00:00
Daniel Dunbar
5d067fe158 TargetRegistry: Fix create{AsmInfo,MCDisassembler} to return non-const objects.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99097 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-20 22:36:22 +00:00
Daniel Dunbar
12783d1c3a MC/X86: Add stub AsmBackend.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96763 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-21 21:54:14 +00:00
Anton Korobeynikov
9184b25fa5 Preliminary patch to improve dwarf EH generation - Hooks to return Personality / FDE / LSDA / TType encoding depending on target / options (e.g. code model / relocation model) - MCIzation of Dwarf EH printer to use encoding information - Stub generation for ELF target (needed for indirect references) - Some other small changes here and there
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96285 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-15 22:35:59 +00:00
Anton Korobeynikov
245ba9698e Drop winmcasminfo and use normal AT&T COFF for all windows targets.
Otherwise AT&T asm printer is used with non-compatible MCAsmInfo and
there is no way to override this behaviour.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96165 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-14 15:19:54 +00:00
Chris Lattner
f068304b1f rip out the 'heinous' x86 MCCodeEmitter implementation.
We still have the templated X86 JIT emitter, *and* the
almost-copy in X86InstrInfo for getting instruction sizes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96059 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-13 00:49:29 +00:00
Evan Cheng
00a99a3584 Run codegen dce pass for all targets at all optimization levels. Previously it's
only run for x86 with fastisel. I've found it being very effective in
eliminating some obvious dead code as result of formal parameter lowering
especially when tail call optimization eliminated the need for some of the loads
from fixed frame objects. It also shrinks a number of the tests. A couple of
tests no longer make sense and are now eliminated.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95493 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-06 09:07:11 +00:00
Chris Lattner
4576247928 stub out a new X86 encoder, which can be tried with
-enable-new-x86-encoder until its stable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95256 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-03 21:24:49 +00:00
Chris Lattner
ce79a25980 rename createX86MCCodeEmitter to more accurately reflect what it creates.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95254 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-03 21:14:33 +00:00
Chris Lattner
7f89fdae34 remove dead code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95144 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-02 22:03:00 +00:00
Chris Lattner
f1d6b107d2 eliminate all the dead addSimpleCodeEmitter implementations.
eliminate random "code emitter" stuff in Alpha, except for
the JIT path.  Next up, remove the template cruft.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95131 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-02 21:31:47 +00:00
Jim Grosbach
e45ab8a0a9 For aligned load/store instructions, it's only required to know whether a
function can support dynamic stack realignment. That's a much easier question
to answer at instruction selection stage than whether the function actually
will have dynamic alignment prologue. This allows the removal of the
stack alignment heuristic pass, and improves code quality for cases where
the heuristic would result in dynamic alignment code being generated when
it was not strictly necessary.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93885 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-19 18:31:11 +00:00
Bill Wendling
e1e0f485f9 Even more explanation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93841 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-19 02:44:01 +00:00
Bill Wendling
48814681d7 - Add getLSDAEncoding to the PowerPC backend.
- Greatly improve the comments to the getLSDAEncoding method.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93796 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-18 22:36:35 +00:00
Bill Wendling
097ea8315f Add FIXME comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93755 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-18 19:47:53 +00:00
Bill Wendling
a8c18890da - Add a comment to the callback indicating that it's *extremely* not a good
idea, but unfortunately necessary.
- Default to using 4-bytes for the LSDA pointer encoding to agree with the
  encoded value in the CIE.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93753 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-18 19:36:27 +00:00
Bill Wendling
d58e9cb42d Retrying r91337:
The CIE says that the LSDA point in the FDE section is an "sdata4". That's fine,
but we need it to actually be 4-bytes in the FDE for some platforms. Allow
individual platforms to decide for themselves.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93616 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-16 01:40:55 +00:00
Sean Callanan
0122c9051a Fixed library dependencies between the X86 disassembler and
X86 codegen that were causing circular symbol dependencies.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91871 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-22 01:11:26 +00:00
Eric Christopher
f4f43cb501 Fix setting and default setting of code model for jit. Do this
by allowing backends to override routines that will default
the JIT and Static code generation to an appropriate code model
for the architecture.

Should fix PR 5773.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91824 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-21 08:15:29 +00:00
Sean Callanan
8ed9f51663 Table-driven disassembler for the X86 architecture (16-, 32-, and 64-bit
incarnations), integrated into the MC framework.  

The disassembler is table-driven, using a custom TableGen backend to 
generate hierarchical tables optimized for fast decode.  The disassembler 
consumes MemoryObjects and produces arrays of MCInsts, adhering to the 
abstract base class MCDisassembler (llvm/MC/MCDisassembler.h).

The disassembler is documented in detail in

- lib/Target/X86/Disassembler/X86Disassembler.cpp (disassembler runtime)
- utils/TableGen/DisassemblerEmitter.cpp (table emitter)

You can test the disassembler by running llvm-mc -disassemble for i386
or x86_64 targets.  Please let me know if you encounter any problems
with it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91749 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-19 02:59:52 +00:00
Jim Grosbach
e27d205d5d Factor the stack alignment calculations out into a target independent pass.
No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90336 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-02 19:30:24 +00:00
Jeffrey Yasskin
d1ba06bf13 Make X86-64 in the Large model always emit 64-bit calls.
The large code model is documented at
http://www.x86-64.org/documentation/abi.pdf and says that calls should
assume their target doesn't live within the 32-bit pc-relative offset
that fits in the call instruction.

To do this, we turn off the global-address->target-global-address
conversion in X86TargetLowering::LowerCall(). The first attempt at
this broke the lazy JIT because it can separate the movabs(imm->reg)
from the actual call instruction. The lazy JIT receives the address of
the movabs as a relocation and needs to record the return address from
the call; and then when that call happens, it needs to patch the
movabs with the newly-compiled target. We could thread the call
instruction into the relocation and record the movabs<->call mapping
explicitly, but that seems to require at least as much new
complication in the code generator as this change.

To fix this, we make lazy functions _always_ go through a call
stub. You'd think we'd only have to force lazy calls through a stub on
difficult platforms, but that turns out to break indirect calls
through a function pointer. The right fix for that is to distinguish
between calls and address-of operations on uncompiled functions, but
that's complex enough to leave for someone else to do.

Another attempt at this defined a new CALL64i pseudo-instruction,
which expanded to a 2-instruction sequence in the assembly output and
was special-cased in the X86CodeEmitter's emitInstruction()
function. That broke indirect calls in the same way as above.

This patch also removes a hack forcing Darwin to the small code model.
Without far-call-stubs, the small code model requires things of the
JITMemoryManager that the DefaultJITMemoryManager can't provide.

Thanks to echristo for lots of testing!



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88984 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-16 22:41:33 +00:00
Daniel Dunbar
2928c83b01 Pass StringRef by value.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86251 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-06 10:58:06 +00:00