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Author SHA1 Message Date
Benjamin Kramer
def548f9a0 BuildLibCalls: Nuke EmitMemCpy, EmitMemMove and EmitMemSet. They are dead and superseded by IRBuilder. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122576 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-27 00:25:32 +00:00
Benjamin Kramer
a1bf4ca773 SimplifyLibCalls: Use IRBuilder to simplify code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122575 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-27 00:16:46 +00:00
Chris Lattner
9f39188def have loop-idiom nuke instructions that feed stores that get removed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122574 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-27 00:03:23 +00:00
Chris Lattner
a92ff91a96 implement enough of the memset inference algorithm to recognize and insert 
memsets.  This is still missing one important validity check, but this is enough
to compile stuff like this:

void test0(std::vector<char> &X) {
  for (std::vector<char>::iterator I = X.begin(), E = X.end(); I != E; ++I)
    *I = 0;
}

void test1(std::vector<int> &X) {
  for (long i = 0, e = X.size(); i != e; ++i)
    X[i] = 0x01010101;
}

With:
 $ clang t.cpp -S -o - -O2 -emit-llvm | opt -loop-idiom | opt -O3 | llc 

to:

__Z5test0RSt6vectorIcSaIcEE:            ## @_Z5test0RSt6vectorIcSaIcEE
## BB#0:                                ## %entry
	subq	$8, %rsp
	movq	(%rdi), %rax
	movq	8(%rdi), %rsi
	cmpq	%rsi, %rax
	je	LBB0_2
## BB#1:                                ## %bb.nph
	subq	%rax, %rsi
	movq	%rax, %rdi
	callq	___bzero
LBB0_2:                                 ## %for.end
	addq	$8, %rsp
	ret
...
__Z5test1RSt6vectorIiSaIiEE:            ## @_Z5test1RSt6vectorIiSaIiEE
## BB#0:                                ## %entry
	subq	$8, %rsp
	movq	(%rdi), %rax
	movq	8(%rdi), %rdx
	subq	%rax, %rdx
	cmpq	$4, %rdx
	jb	LBB1_2
## BB#1:                                ## %for.body.preheader
	andq	$-4, %rdx
	movl	$1, %esi
	movq	%rax, %rdi
	callq	_memset
LBB1_2:                                 ## %for.end
	addq	$8, %rsp
	ret



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122573 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-26 23:42:51 +00:00
Chris Lattner
61db1f56d0 start using irbuilder to make mem intrinsics in a few passes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122572 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-26 22:57:41 +00:00
Chris Lattner
c0d5496b8a add methods to IRBuilder to create memcpy/memset/memmove. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122571 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-26 22:49:25 +00:00
Rafael Espindola
390b693dac Fix .cfi_personality on 32 bit systems. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122570 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-26 22:47:37 +00:00
Rafael Espindola
98976610d2 Add support for @note. Patch by Jörg Sonnenberger. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122568 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-26 21:30:59 +00:00
Chris Lattner
22920b5986 sketch more of this out. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122567 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-26 20:45:45 +00:00
Rafael Espindola
d7c8ccae8e Add basic support for .cfi_personality. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122566 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-26 20:20:31 +00:00
Chris Lattner
bb89710ddd move isBytewiseValue out to ValueTracking.h/cpp 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122565 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-26 20:15:01 +00:00
Chris Lattner
e6bb649ec6 actually add the file... 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122563 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-26 19:39:38 +00:00
Chris Lattner
b0db161f5b Start of a pass for recognizing memset and memcpy idioms. 
No functionality yet.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122562 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-26 19:32:44 +00:00
Benjamin Kramer
3fed0d917d Simplify code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122561 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-26 15:23:45 +00:00
Chris Lattner
6dbb5dc5eb fix some sort of weird pasto 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122560 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-26 12:05:11 +00:00
Chris Lattner
8a4893e013 add a note 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122559 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-26 03:53:31 +00:00
Chris Lattner
7ab3cc32d6 Generalize a previous change, fixing PR8855 - an valid large immediate 
rejected by the mc assembler.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122557 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-25 21:36:35 +00:00
Chris Lattner
ae47be1ea0 don't lose TD info 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122556 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-25 20:52:04 +00:00
Chris Lattner
7569d79de1 switch the inliner alignment enforcement stuff to use the 
getOrEnforceKnownAlignment function, which simplifies the code
and makes it stronger.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122555 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-25 20:42:38 +00:00
Chris Lattner
687140c818 Move getOrEnforceKnownAlignment out of instcombine into Transforms/Utils. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122554 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-25 20:37:57 +00:00
Michael J. Spencer
43ee29d418 Support/PathV1: Deprecate makeAbsolute and remove Unix impl because it annoys people. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122553 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-25 20:10:11 +00:00
Eric Christopher
7853ae1d97 Header warning patrol. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122551 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-25 02:38:01 +00:00
Benjamin Kramer
49c7e3e290 Fix a thinko pointed out by Frits van Bommel: looking through global variables in isBytewiseValue is not safe. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122550 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-24 22:23:59 +00:00
Rafael Espindola
fea753b397 Merge IsFixupFullyResolved and IsSymbolRefDifferenceFullyResolved. We now 
have a single point where targets test if a relocation is needed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122549 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-24 21:22:02 +00:00
Benjamin Kramer
a112087e42 MemCpyOpt: Turn memcpys from a constant into a memset if possible. 
This allows us to compile "int cst[] = {-1, -1, -1};" into
  movl  $-1, 16(%rsp)
  movq  $-1, 8(%rsp)
instead of
  movl  _cst+8(%rip), %eax
  movl  %eax, 16(%rsp)
  movq  _cst(%rip), %rax
  movq  %rax, 8(%rsp)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122548 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-24 21:17:12 +00:00
Daniel Dunbar
4010dd72b8 MC/Mach-O/ARM: Start handling some Thumb branches. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122547 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-24 16:41:46 +00:00
Andrew Trick
a75ce9f5d2 Minor cleanup related to my latest scheduler changes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122545 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-24 07:10:19 +00:00
Andrew Trick
24312230ad Fix a few cases where the scheduler is not checking for phys reg copies. The scheduling node may have a NULL DAG node, yuck. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122544 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-24 06:46:50 +00:00
Jim Grosbach
398abb4a9a Trailing whitespace. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122542 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-24 05:06:32 +00:00
Andrew Trick
2da8bc8a5f Various bits of framework needed for precise machine-level selection 
DAG scheduling during isel. Most new functionality is currently
guarded by -enable-sched-cycles and -enable-sched-hazard.

Added InstrItineraryData::IssueWidth field, currently derived from
ARM itineraries, but could be initialized differently on other targets.

Added ScheduleHazardRecognizer::MaxLookAhead to indicate whether it is
active, and if so how many cycles of state it holds.

Added SchedulingPriorityQueue::HasReadyFilter to allowing gating entry
into the scheduler's available queue.

ScoreboardHazardRecognizer now accesses the ScheduleDAG in order to
get information about it's SUnits, provides RecedeCycle for bottom-up
scheduling, correctly computes scoreboard depth, tracks IssueCount, and
considers potential stall cycles when checking for hazards.

ScheduleDAGRRList now models machine cycles and hazards (under
flags). It tracks MinAvailableCycle, drives the hazard recognizer and
priority queue's ready filter, manages a new PendingQueue, properly
accounts for stall cycles, etc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122541 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-24 05:03:26 +00:00
Andrew Trick
6e8f4c4048 whitespace 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122539 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-24 04:28:06 +00:00
Cameron Zwarich
ef485d8658 Simplify a check for implicit defs and remove a FIXME. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122537 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-24 03:09:36 +00:00
Kevin Enderby
d82ed5b734 In llvm-mc parse a Hash token as a full line comment. Allows handling of 
preprocessed .s files and matches darwin gas.  rdar://8798690
Also fix a comment on the next line of AsmParser.cpp after this new code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122531 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-24 00:12:02 +00:00
Jim Grosbach
f12eee75d1 Use a StringSwitch<> instead of a manually constructed string matcher. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122530 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-24 00:03:39 +00:00
Owen Anderson
ec3953ff95 When determining if we can fold (x >> C1) << C2, the bits that we need to verify are zero 
are not the low bits of x, but the bits that WILL be the low bits after the operation completes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122529 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-23 23:56:24 +00:00
Evan Cheng
e4a2dd2f1a Code clean up. No functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122528 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-23 23:54:17 +00:00
Jim Grosbach
b0ad9cf935 Remove dead patterns. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122524 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-23 23:20:13 +00:00
Jim Grosbach
940c8e5494 Recognize a few more documented register name aliases for ARM in the asm lexer. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122523 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-23 23:19:54 +00:00
Bob Wilson
3c904694fc Radar 8803471: Fix expansion of ARM BCCi64 pseudo instructions. 
If the basic block containing the BCCi64 (or BCCZi64) instruction ends with
an unconditional branch, that branch needs to be deleted before appending
the expansion of the BCCi64 to the end of the block.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122521 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-23 22:45:49 +00:00
Oscar Fuentes
af62935bce Do not re-test for the existence of pthread.h. 
It was causing problems on the MinGW build. See PR8849.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122518 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-23 21:27:22 +00:00
Torok Edwin
78982611d8 XFAIL vg_leak the new test as the rest. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122517 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-23 21:22:09 +00:00
Owen Anderson
d5f8684b16 It is possible for SimplifyCFG to cause PHI nodes to become redundant too late in the optimization 
pipeline to be caught by instcombine, and it's not feasible to catch them in SimplifyCFG because the
use-lists are in an inconsistent state at the point where it could know that it need to simplify them.
Instead, have CodeGenPrepare look for trivially redundant PHIs as part of its general cleanup effort.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122516 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-23 20:57:35 +00:00
Chris Lattner
036609bd7d Flag -> Glue, the ongoing saga 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122513 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-23 18:28:41 +00:00
Chris Lattner
29d8f0cae4 flags -> glue for selectiondag 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122509 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-23 17:24:32 +00:00
Chris Lattner
a4359be032 sdisel flag -> glue. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122507 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-23 17:13:18 +00:00
Chris Lattner
8950bcaa5a continue renaming flag -> glue. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122506 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-23 17:03:20 +00:00
Torok Edwin
a156efdf71 Fix OCaml bindings crash, PR8847. 
See http://caml.inria.fr/mantis/view.php?id=4166
If we call only external functions from a module, then its 'let _' bindings
don't get executed, which means that the exceptions don't get registered for use
in the C code.
This in turn causes llvm_raise to call raise_with_arg() with a NULL pointer and
cause a segmentation fault.

The workaround is to declare all 'external' functions as 'val' in these .mli
files.

Also added a separate testcase (the testcase must call only external functions
for the bug to occur).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122497 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-23 15:49:26 +00:00
Benjamin Kramer
9d071cbb92 Remove/fix invalid README entries. The well thought out strcpy function doesn't return a pointer to the end of the string. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122496 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-23 15:32:07 +00:00
Benjamin Kramer
3e4106105b Remove some obsolete README items, add a new one off the top of my head. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122495 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-23 15:07:02 +00:00
Andrew Trick
2902736a50 Reorganize ListScheduleBottomUp in preparation for modeling machine cycles and instruction issue. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122491 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-23 05:42:20 +00:00