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113 Commits

Author SHA1 Message Date
Evan Cheng
62694a52fe Enable machine sinking pass in non-fast mode. 
llvm-svn: 63999
 2009-02-07 01:57:46 +00:00
Evan Cheng
b36e3e34e7 Turn on machine LICM in non-fast mode. 
llvm-svn: 63855
 2009-02-05 08:46:33 +00:00
Dan Gohman
6b4f972c9f 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.

llvm-svn: 61183
 2008-12-18 01:36:42 +00:00
Dan Gohman
dcc6608aa6 Run post-RA scheduling after branch folding, as it tends to 
obscure tail-merging opportunities.

llvm-svn: 59967
 2008-11-24 17:22:52 +00:00
Dan Gohman
3b3afa49f8 Add another machine-code printing pass when post-pass scheduling is run. 
llvm-svn: 59746
 2008-11-20 19:54:21 +00:00
Bill Wendling
f5b264a64b Implement stack protectors as function attributes: "ssp" and "sspreq". 
llvm-svn: 59202
 2008-11-13 01:02:14 +00:00
Bill Wendling
ae168b2c83 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.

llvm-svn: 58723
 2008-11-04 21:53:09 +00:00
Bill Wendling
0f3f36688b 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.

llvm-svn: 58673
 2008-11-04 02:10:20 +00:00
Dan Gohman
66e878f316 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.

llvm-svn: 58144
 2008-10-25 17:46:52 +00:00
Daniel Dunbar
d1169ccaf2 Move Print*Pass to use raw_ostream. 
llvm-svn: 57946
 2008-10-22 03:25:22 +00:00
Daniel Dunbar
919ce3c16a Privatize PrintModulePass and PrintFunctionPass and add 
createPrintModulePass and createPrintFunctionPass.
 - So clients who compile w/o RTTI can use them.

llvm-svn: 57933
 2008-10-21 23:33:38 +00:00
Dan Gohman
08e60cee90 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.

llvm-svn: 57270
 2008-10-07 23:00:56 +00:00
Devang Patel
a5cda569d3 Remove OptimizeForSize global. Use function attribute optsize. 
llvm-svn: 56937
 2008-10-01 23:18:38 +00:00
Dan Gohman
cd111d96c6 Enable FastISel by default (on x86 and x86-64) with the -fast option. 
llvm-svn: 56930
 2008-10-01 20:39:19 +00:00
Dan Gohman
ed3216739e Enable DeadMachineInstructionElim when Fast-ISel is enabled. 
llvm-svn: 56604
 2008-09-25 01:14:49 +00:00
Dan Gohman
57dc5e1698 Refactor the code that adds standard LLVM codegen passes into 
a separate function, eliminating duplication between the
add-passes-for-file and add-passes-for-machine-code code.

llvm-svn: 56599
 2008-09-25 00:37:07 +00:00
Owen Anderson
2c1d54952b Use raw_ostream throughout the AsmPrinter. 
llvm-svn: 55092
 2008-08-21 00:14:44 +00:00
Gordon Henriksen
2cc861a6c1 Rename some GC classes so that their roll will hopefully be clearer. 
In particular, Collector was confusing to implementors. Several
thought that this compile-time class was the place to implement
their runtime GC heap. Of course, it doesn't even exist at runtime.
Specifically, the renames are:

  Collector               -> GCStrategy
  CollectorMetadata       -> GCFunctionInfo
  CollectorModuleMetadata -> GCModuleInfo
  CollectorRegistry       -> GCRegistry
  Function::getCollector  -> getGC (setGC, hasGC, clearGC)

Several accessors and nested types have also been renamed to be
consistent. These changes should be obvious.

llvm-svn: 54899
 2008-08-17 18:44:35 +00:00
Gordon Henriksen
e51c9eb75e Factor GC metadata table assembly generation out of Collector in preparation for splitting AsmPrinter into its own library. 
llvm-svn: 54881
 2008-08-17 12:56:54 +00:00
Evan Cheng
488fdf516f Don't run stack slot coloring if -fast. 
llvm-svn: 52933
 2008-06-30 22:33:16 +00:00
Evan Cheng
d919d1ecd8 Enable stack coloring by default. 
llvm-svn: 52057
 2008-06-06 19:52:44 +00:00
Evan Cheng
a9cf0ff766 Oops. Should not be enabled by default. 
llvm-svn: 51953
 2008-06-04 18:09:20 +00:00
Evan Cheng
2fc7954878 Add a stack slot coloring pass. Not yet enabled. 
llvm-svn: 51934
 2008-06-04 09:18:41 +00:00
Evan Cheng
cbb64ece8a Do not run loop-aligner at -fast (e.g. -O0). 
llvm-svn: 51898
 2008-06-03 06:56:08 +00:00
Evan Cheng
ee4a0719c0 Fix indentation. 
llvm-svn: 51793
 2008-05-30 22:39:32 +00:00
Anton Korobeynikov
74178d02d1 Unbreak JIT 
llvm-svn: 50173
 2008-04-23 18:26:03 +00:00
Anton Korobeynikov
b1ad6979dc Add facility for pre-RA passes 
llvm-svn: 50165
 2008-04-23 18:22:28 +00:00
Dale Johannesen
79633a914f Recommitting EH patch; this should answer most of the 
review feedback.
-enable-eh is still accepted but doesn't do anything.
EH intrinsics use Dwarf EH if the target supports that,
and are handled by LowerInvoke otherwise.
The separation of the EH table and frame move data is,
I think, logically figured out, but either one still
causes full EH info to be generated (not sure how to
split the metadata correctly).
MachineModuleInfo::needsFrameInfo is no longer used and
is removed.

llvm-svn: 49064
 2008-04-02 00:25:04 +00:00
Dale Johannesen
8813206b7f Revert 49006 for the moment. 
llvm-svn: 49046
 2008-04-01 20:00:57 +00:00
Dale Johannesen
fa4433be71 Emit exception handling info for functions which are 
not marked nounwind, or for all functions when -enable-eh
is set, provided the target supports Dwarf EH.

llvm-gcc generates nounwind in the right places; other FEs
will need to do so also.  Given such a FE, -enable-eh should
no longer be needed.

llvm-svn: 49006
 2008-03-31 23:40:23 +00:00
Dan Gohman
e7be9eea10 Avoid outputing spaces at the ends of lines. 
llvm-svn: 48797
 2008-03-25 21:38:12 +00:00
Devang Patel
0cfc278311 Do not align loops if optimizing for size. 
llvm-svn: 48794
 2008-03-25 21:03:02 +00:00
Dan Gohman
8e3c88c4e9 Use PassManagerBase instead of FunctionPassManager for functions 
that merely add passes. This allows them to be used with either
FunctionPassManager or PassManager, or even with a custom new
kind of pass manager.

llvm-svn: 48256
 2008-03-11 22:29:46 +00:00
Evan Cheng
ea1f2d1110 Added option -align-loops=<true/false> to disable loop aligner pass. 
llvm-svn: 47736
 2008-02-28 23:29:57 +00:00
Nicolas Geoffray
72fa78e195 Enable exception handling int JIT 
llvm-svn: 47079
 2008-02-13 18:39:37 +00:00
Chris Lattner
b067edf1b3 don't create the post-ra scheduler unless it is enabled. 
llvm-svn: 45972
 2008-01-14 19:00:06 +00:00
Gordon Henriksen
759ed9d805 Ammending r45669 with a missing file. 
llvm-svn: 45671
 2008-01-07 01:33:09 +00:00
Chris Lattner
9428a7d97f allow sinking to be enabled for the jit 
llvm-svn: 45624
 2008-01-05 06:14:16 +00:00
Bill Wendling
13eb1bfc08 Move option to enable machine LICM into LLVMTargetMachine.cpp. 
llvm-svn: 45572
 2008-01-04 08:11:03 +00:00
Chris Lattner
f4972fa569 Add a really quick hack at a machine code sinking pass, enabled with --enable-sinking. 
It is missing validity checks, so it is known broken.  However, it is powerful enough
to compile this contrived code:

void test1(int C, double A, double B, double *P) {
  double Tmp = A*A+B*B;
  *P = C ? Tmp : A;
}

into:

_test1:
	movsd	8(%esp), %xmm0
	cmpl	$0, 4(%esp)
	je	LBB1_2	# entry
LBB1_1:	# entry
	movsd	16(%esp), %xmm1
	mulsd	%xmm1, %xmm1
	mulsd	%xmm0, %xmm0
	addsd	%xmm1, %xmm0
LBB1_2:	# entry
	movl	24(%esp), %eax
	movsd	%xmm0, (%eax)
	ret

instead of:

_test1:
	movsd	16(%esp), %xmm0
	mulsd	%xmm0, %xmm0
	movsd	8(%esp), %xmm1
	movapd	%xmm1, %xmm2
	mulsd	%xmm2, %xmm2
	addsd	%xmm0, %xmm2
	cmpl	$0, 4(%esp)
	je	LBB1_2	# entry
LBB1_1:	# entry
	movapd	%xmm2, %xmm1
LBB1_2:	# entry
	movl	24(%esp), %eax
	movsd	%xmm1, (%eax)
	ret

woo.

llvm-svn: 45570
 2008-01-04 07:36:53 +00:00
Chris Lattner
ad9a6ccb83 Remove attribution from file headers, per discussion on llvmdev. 
llvm-svn: 45418
 2007-12-29 20:36:04 +00:00
Bill Wendling
c08dedb060 Initial commit of the machine code LICM pass. It successfully hoists this: 
_foo:
        li r2, 0
LBB1_1: ; bb
        li r5, 0
        stw r5, 0(r3)
        addi r2, r2, 1
        addi r3, r3, 4
        cmplw cr0, r2, r4
        bne cr0, LBB1_1 ; bb
LBB1_2: ; return
        blr 

to:

_foo:
        li r2, 0
        li r5, 0
LBB1_1: ; bb
        stw r5, 0(r3)
        addi r2, r2, 1
        addi r3, r3, 4
        cmplw cr0, r2, r4
        bne cr0, LBB1_1 ; bb
LBB1_2: ; return
        blr

ZOMG!! :-)

Moar to come...

llvm-svn: 44687
 2007-12-07 21:42:31 +00:00
Christopher Lamb
55a1e36013 Move subreg lowering pass to be right after regalloc, per feedback. 
llvm-svn: 40548
 2007-07-27 07:36:14 +00:00
Christopher Lamb
258dab5389 Add a MachineFunction pass, which runs post register allocation, that turns subreg insert/extract instruction into register copies. This ensures correct code gen if the coalescer isn't able to remove all subreg instructions. 
llvm-svn: 40521
 2007-07-26 08:18:32 +00:00
Evan Cheng
cdb4e7949f Added -print-emitted-asm to print out JIT generated asm to cerr. 
llvm-svn: 40123
 2007-07-20 21:56:13 +00:00
Dale Johannesen
1a9d304c35 Modify previous patch per review comments. 
llvm-svn: 39817
 2007-07-13 17:31:29 +00:00
Dale Johannesen
469ed8e17e Skeleton of post-RA scheduler; doesn't do anything yet. 
Change name of -sched option and DEBUG_TYPE to
pre-RA-sched; adjust testcases.

llvm-svn: 39816
 2007-07-13 17:13:54 +00:00
Duncan Sands
bfbe683782 Exception handling has been implemented. 
llvm-svn: 39732
 2007-07-11 16:59:20 +00:00
Chris Lattner
653c0ccfbe document and hide two options. 
llvm-svn: 37651
 2007-06-19 05:47:49 +00:00
Dale Johannesen
738f94210c name change requested by review of previous patch 
llvm-svn: 37289
 2007-05-22 18:31:04 +00:00
Dale Johannesen
fe0fe14411 Make tail merging the default, except on powerPC. There was no prior art 
for a target-dependent default with a command-line override; this way
should be generally usable.

llvm-svn: 37285
 2007-05-22 17:14:46 +00:00
Chris Lattner
f01b0a800b move a bunch of code out of the sdisel pass into its own opt pass "codegenprepare". 
llvm-svn: 35529
 2007-03-31 04:18:03 +00:00
Chris Lattner
330464a91c Add a -print-lsr-output option to LLC, to print the output of the LSR pass. 
llvm-svn: 35522
 2007-03-31 00:24:43 +00:00
Devang Patel
0b82378a28 Now LoopStrengthReduce is a LoopPass. 
llvm-svn: 34984
 2007-03-06 21:14:09 +00:00
Jim Laskey
25993e18e6 Use exception flag. 
llvm-svn: 34496
 2007-02-22 16:22:15 +00:00
Bill Wendling
ccf772cc6b Split the addPassesToEmitFile method up into two. This is so that we can 
do some common stuff, then on our own add an object file writer (by calling
a concrete function), and then do some finishing stuff, if need be.

llvm-svn: 34032
 2007-02-08 01:36:53 +00:00
Bill Wendling
4d1444725b Removed more <iostream> includes 
llvm-svn: 32321
 2006-12-07 20:28:15 +00:00
Chris Lattner
0d40275b0e enable the branch folding pass for the JIT. 
llvm-svn: 31777
 2006-11-16 01:00:07 +00:00
Jim Laskey
7e0f0b2d24 1. Add a pass to fold debug label instructions so a debug info client can detect 
empty ranges.

2. Reorg how MachineDebugInfo maintains changes to debug labels.

3. Have dwarf writer use debug label info to simplify scopes and source line
coorespondence.

4. Revert the merging of compile units until I can get the bugs ironed out.

llvm-svn: 31507
 2006-11-07 19:33:46 +00:00
Jim Laskey
55d57252c3 Don't do dead block elimination in fast mode. 
llvm-svn: 31155
 2006-10-24 16:11:49 +00:00
Chris Lattner
87d16e0ed9 add the branch folding pass as a late cleanup pass for all targets. For now 
it just deletes empty MBB's.  Soon it will do more :)

llvm-svn: 30941
 2006-10-13 20:45:56 +00:00
Duraid Madina
51396ffd3e add setJumpBufSize() and setJumpBufAlignment() to target-lowering. 
Call these from your backend to enjoy setjmp/longjmp goodness, see
lib/Target/IA64/IA64ISelLowering.cpp for an example

llvm-svn: 30095
 2006-09-04 06:21:35 +00:00
Chris Lattner
93ed29cb5d new file 
llvm-svn: 30082
 2006-09-04 04:16:09 +00:00