Commit Graph

100 Commits

Author SHA1 Message Date
Dan Gohman
e29fea4434 -fast is now -O0. -fast-isel is no longer experimental.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80104 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-26 15:57:57 +00:00
Chris Lattner
cf143a4d91 remove std::ostream versions of printing stuff for MBB and MF,
upgrading a few things to use raw_ostream


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79811 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-23 03:13:20 +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
Jim Grosbach
8b818d7e98 Move the sjlj exception handling conversions to a back-end pass where they
more properly belong. This allows removing the front-end conditionalized
SJLJ code, and cleans up the generated IR considerably. All of the
infrastructure code (calling _Unwind_SjLj_Register/Unregister, etc) is
added by the SjLjEHPrepare pass.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79250 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-17 16:41:22 +00:00
Jakob Stoklund Olesen
4af85b2328 Allow double defs in the machine code verifier after the addPreRegAlloc passes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79095 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-15 13:10:15 +00:00
Daniel Dunbar
7894578470 TargetRegistry: Change AsmPrinter constructor to be typed as returning an
AsmPrinter instance (instead of just a FunctionPass)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78962 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-13 23:48:47 +00:00
Daniel Dunbar
67d894ea64 TargetRegistry: Reorganize AsmPrinter construction so that clients pass in the
TargetAsmInfo. This eliminates a dependency on TargetMachine.h from
TargetRegistry.h, which technically was a layering violation.
 - Clients probably can only sensibly pass in the same TargetAsmInfo as the
   TargetMachine has, but there are only limited clients of this API.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78928 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-13 19:38:51 +00:00
Chris Lattner
a7ac47cee1 Change TargetAsmInfo to be constructed via TargetRegistry from a Target+Triple
pair instead of from a virtual method on TargetMachine.  This cuts the final
ties of TargetAsmInfo to TargetMachine, meaning that MC can now use 
TargetAsmInfo.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78802 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-12 07:22:17 +00:00
Dan Gohman
ffef8acc3e Tidy #includes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78677 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-11 16:02:12 +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
Evan Cheng
6248fa4529 Disable stack coloring with register for now. It's not able to set kill markers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78179 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-05 07:26:17 +00:00
Dan Gohman
ad2afc2a42 Reapply r77654 with a fix: MachineFunctionPass's getAnalysisUsage
shouldn't do AU.setPreservesCFG(), because even though CodeGen passes
don't modify the LLVM IR CFG, they may modify the MachineFunction CFG,
and passes like MachineLoop are registered with isCFGOnly set to true.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77691 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-31 18:16:33 +00:00
Daniel Dunbar
c5b19b21d8 Revert r77654, it appears to be causing llvm-gcc bootstrap failures, and many
failures when building assorted projects with clang.

--- Reverse-merging r77654 into '.':
U    include/llvm/CodeGen/Passes.h
U    include/llvm/CodeGen/MachineFunctionPass.h
U    include/llvm/CodeGen/MachineFunction.h
U    include/llvm/CodeGen/LazyLiveness.h
U    include/llvm/CodeGen/SelectionDAGISel.h
D    include/llvm/CodeGen/MachineFunctionAnalysis.h
U    include/llvm/Function.h
U    lib/Target/CellSPU/SPUISelDAGToDAG.cpp
U    lib/Target/PowerPC/PPCISelDAGToDAG.cpp
U    lib/CodeGen/LLVMTargetMachine.cpp
U    lib/CodeGen/MachineVerifier.cpp
U    lib/CodeGen/MachineFunction.cpp
U    lib/CodeGen/PrologEpilogInserter.cpp
U    lib/CodeGen/MachineLoopInfo.cpp
U    lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
D    lib/CodeGen/MachineFunctionAnalysis.cpp
D    lib/CodeGen/MachineFunctionPass.cpp
U    lib/CodeGen/LiveVariables.cpp


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77661 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-31 03:02:41 +00:00
Dan Gohman
933c762371 Manage MachineFunctions with an analysis Pass instead of the Annotable
mechanism. To support this, make MachineFunctionPass a little more
complete.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77654 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-31 01:52:50 +00:00
Daniel Dunbar
36129dba4f We don't need to use llvm_report_error, this interface can deal with errors
(although we don't get a very good error message).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75864 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-15 23:54:01 +00:00
Daniel Dunbar
6d823cd39d Add missing includes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75862 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-15 23:48:37 +00:00
Daniel Dunbar
5d77cad60b Lift addAssemblyEmitter into LLVMTargetMachine.
- No functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75859 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-15 23:34:19 +00:00
Daniel Dunbar
cfe9a605ee Lift DumpAsm / -print-emitted-asm functionality into LLVMTargetMachine.
- No intended functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75848 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-15 22:33:19 +00:00
David Greene
71847813bc Have asm printers use formatted_raw_ostream directly to avoid a
dynamic_cast<>.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75670 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-14 20:18:05 +00:00
Evan Cheng
8799dbe5b7 Revert an accidental commit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75553 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-13 23:44:01 +00:00
Bruno Cardoso Lopes
ac57e6e498 Add the Object Code Emitter class. Original patch by Aaron Gray, I did some
cleanup, removed some #includes and moved Object Code Emitter out-of-line.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74813 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-06 05:09:34 +00:00
Evan Cheng
e7d6df7353 Add a ARM specific pre-allocation pass that re-schedule loads / stores from
consecutive addresses togther. This makes it easier for the post-allocation pass
to form ldm / stm.

This is step 1. We are still missing a lot of ldm / stm opportunities because
of register allocation are not done in the desired order. More enhancements
coming.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73291 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-13 09:12:55 +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
Duncan Sands
b0f1e1780c Add a new codegen pass that normalizes dwarf exception handling
code in preparation for code generation.  The main thing it does
is handle the case when eh.exception calls (and, in a future
patch, eh.selector calls) are far away from landing pads.  Right
now in practice you only find eh.exception calls close to landing
pads: either in a landing pad (the common case) or in a landing
pad successor, due to loop passes shifting them about.  However
future exception handling improvements will result in calls far
from landing pads:
(1) Inlining of rewinds.  Consider the following case:
In function @f:
...
  invoke @g to label %normal unwind label %unwinds
...
unwinds:
  %ex = call i8* @llvm.eh.exception()
...

In function @g:
...
  invoke @something to label %continue unwind label %handler
...
handler:
  %ex = call i8* @llvm.eh.exception()
... perform cleanups ...
  "rethrow exception"

Now inline @g into @f.  Currently this is turned into:
In function @f:
...
  invoke @something to label %continue unwind label %handler
...
handler:
  %ex = call i8* @llvm.eh.exception()
... perform cleanups ...
  invoke "rethrow exception" to label %normal unwind label %unwinds
unwinds:
  %ex = call i8* @llvm.eh.exception()
...

However we would like to simplify invoke of "rethrow exception" into
a branch to the %unwinds label.  Then %unwinds is no longer a landing
pad, and the eh.exception call there is then far away from any landing
pads.

(2) Using the unwind instruction for cleanups.
It would be nice to have codegen handle the following case:
  invoke @something to label %continue unwind label %run_cleanups
...
handler:
... perform cleanups ...
  unwind

This requires turning "unwind" into a library call, which
necessarily takes a pointer to the exception as an argument
(this patch also does this unwind lowering).  But that means
you are using eh.exception again far from a landing pad.

(3) Bugpoint simplifications.  When bugpoint is simplifying
exception handling code it often generates eh.exception calls
far from a landing pad, which then causes codegen to assert.
Bugpoint then latches on to this assertion and loses sight
of the original problem.

Note that it is currently rare for this pass to actually do
anything.  And in fact it normally shouldn't do anything at
all given the code coming out of llvm-gcc!  But it does fire
a few times in the testsuite.  As far as I can see this is
almost always due to the LoopStrengthReduce codegen pass
introducing pointless loop preheader blocks which are landing
pads and only contain a branch to another block.  This other
block contains an eh.exception call.  So probably by tweaking
LoopStrengthReduce a bit this can be avoided.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72276 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-22 20:36:31 +00:00
Jakob Stoklund Olesen
48872e0d84 Pass to verify generated machine code.
The following is checked:

* Operand counts: All explicit operands must be present.

* Register classes: All physical and virtual register operands must be
  compatible with the register class required by the instruction descriptor.

* Register live intervals: Registers must be defined only once, and must be
  defined before use.

The machine code verifier is enabled with the command-line option
'-verify-machineinstrs', or by defining the environment variable
LLVM_VERIFY_MACHINEINSTRS to the name of a file that will receive all the
verifier errors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71918 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-16 00:33:53 +00:00
Evan Cheng
1ea7327845 Fixed a stack slot coloring with reg bug: do not update implicit use / def when doing forward / backward propagation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71574 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-12 18:31:57 +00:00
Evan Cheng
bbf1db7213 Rename "loop aligner" pass to "code placement optimization" pass.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71150 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-07 05:42:24 +00:00
Bill Wendling
2c1d7726f2 Just turn aggressive stack coloring off at -O3.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71140 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-07 01:33:38 +00:00
Bill Wendling
d0c1f9c932 Temporarily revert r71010. It was causing massive failures during self-hosting.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71138 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-07 01:27:25 +00:00
Evan Cheng
f9a9b51429 Enable stack coloring with regs at -O3.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71010 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-05 20:30:36 +00:00
Bill Wendling
98a366d547 Instead of passing in an unsigned value for the optimization level, use an enum,
which better identifies what the optimization is doing. And is more flexible for
future uses.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70440 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-29 23:29:43 +00:00
Bill Wendling
be8cc2a3de Second attempt:
Massive check in. This changes the "-fast" flag to "-O#" in llc. If you want to
use the old behavior, the flag is -O0. This change allows for finer-grained
control over which optimizations are run at different -O levels.

Most of this work was pretty mechanical. The majority of the fixes came from
verifying that a "fast" variable wasn't used anymore. The JIT still uses a
"Fast" flag. I'll change the JIT with a follow-up patch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70343 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-29 00:15:41 +00:00
Bill Wendling
c69d56f115 r70270 isn't ready yet. Back this out. Sorry for the noise.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70275 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-28 01:04:53 +00:00
Bill Wendling
2e9d5f912a Massive check in. This changes the "-fast" flag to "-O#" in llc. If you want to
use the old behavior, the flag is -O0. This change allows for finer-grained
control over which optimizations are run at different -O levels.

Most of this work was pretty mechanical. The majority of the fixes came from
verifying that a "fast" variable wasn't used anymore. The JIT still uses a
"Fast" flag. I'm not 100% sure if it's necessary to change it there...


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70270 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-28 00:21:31 +00:00
Evan Cheng
42bf74be14 CodeGen still defaults to non-verbose asm, but llc now overrides it and default to verbose.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67668 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-25 01:47:28 +00:00
Evan Cheng
8f0d99e463 Re-enable machine sinking pass now that the coalescer bugs and the AnalyzeBrnach bug are fixed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64126 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-09 08:45:39 +00:00
Bill Wendling
7f51fd3ea9 Revert r63999. It was breaking self-hosting builds.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64062 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-08 00:58:05 +00:00
Evan Cheng
c963b638c7 Enable machine sinking pass in non-fast mode.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63999 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-07 01:57:46 +00:00
Evan Cheng
c5d1a4ffd9 Turn on machine LICM in non-fast mode.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63855 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-05 08:46:33 +00:00
Dan Gohman
23b0d490cd Move post-RA scheduling before branch folding for now, because branch
folding's tail merging doesn't currently preserve liveness information
which post-RA scheduling requires.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61183 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-18 01:36:42 +00:00
Dan Gohman
cb72dd6776 Run post-RA scheduling after branch folding, as it tends to
obscure tail-merging opportunities.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59967 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-24 17:22:52 +00:00
Dan Gohman
5ce0973f7f Add another machine-code printing pass when post-pass scheduling is run.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59746 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-20 19:54:21 +00:00
Bill Wendling
e9e6bdf27f Implement stack protectors as function attributes: "ssp" and "sspreq".
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59202 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-13 01:02:14 +00:00
Bill Wendling
80a320d974 Update in response to feedback from Chris:
- Use enums instead of magic numbers.

- Rework algorithm to use the bytes size from the target to determine when to
  emit stack protectors.

- Get rid of "propolice" in any comments.

- Renamed an option to its expanded form.

- Other miscellanenous changes.

More changes will come after this.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58723 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-04 21:53:09 +00:00
Bill Wendling
2b58ce5ab4 Initial checkin for stack protectors. Here's what it does:
* The prologue is modified to read the __stack_chk_guard global and insert it
  onto the stack.

* The epilogue is modified to read the stored guard from the stack and compare
  it to the original __stack_chk_guard value. If they differ, then the
  __stack_chk_fail() function is called.

* The stack protector needs to be first on the stack (after the parameters) to
  catch any stack-smashing activities.

Front-end support will follow after a round of beta testing.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58673 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-04 02:10:20 +00:00
Dan Gohman
71b7f646de Move the code that adds the DeadMachineInstructionElimPass from
target-independent code to target-specific code. This prevents it
from running on targets that aren't using fast-isel.

In addition to saving compile time, this addresses the problem
that not all targets are prepared for it. In order to use this
pass, all instructions must declare all their fixed uses and
defs of physical registers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58144 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-25 17:46:52 +00:00
Daniel Dunbar
3b0da26e20 Move Print*Pass to use raw_ostream.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57946 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-22 03:25:22 +00:00
Daniel Dunbar
f4db3a51c7 Privatize PrintModulePass and PrintFunctionPass and add
createPrintModulePass and createPrintFunctionPass.
 - So clients who compile w/o RTTI can use them.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57933 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-21 23:33:38 +00:00
Dan Gohman
eb0d6abee3 Remove -disable-fast-isel. Use cl::boolOrDefault with -fast-isel
instead.

So now: -fast-isel or -fast-isel=true enable fast-isel, and
-fast-isel=false disables it. Fast-isel is also on by default
with -fast, and off by default otherwise.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57270 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-07 23:00:56 +00:00
Devang Patel
4ae641f4d1 Remove OptimizeForSize global. Use function attribute optsize.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56937 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-01 23:18:38 +00:00