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Author SHA1 Message Date
Michael J. Spencer
bb238417bb Support/PathV1: Deprecate getLast. 
llvm-svn: 122116
 2010-12-18 00:19:10 +00:00
Michael J. Spencer
ef841c81d8 CMake: Cleanup and document MSVC warning flags. 
llvm-svn: 122115
 2010-12-18 00:18:58 +00:00
Owen Anderson
702d715185 Add support to CallbackVH to receive notification when a Value's use-list changes. 
llvm-svn: 122114
 2010-12-18 00:07:15 +00:00
Jakob Stoklund Olesen
2879da5e13 Pass a Banner argument to the machine code verifier both from 
createMachineVerifierPass and MachineFunction::verify.

The banner is printed before the machine code dump, just like the printer pass.

llvm-svn: 122113
 2010-12-18 00:06:56 +00:00
Bob Wilson
776d3f73eb Fix result type of Neon floating-point comparisons against zero. 
The result vector elements are always integers.  Radar 8782191.

llvm-svn: 122112
 2010-12-18 00:04:33 +00:00
Bob Wilson
c000db3584 Add some missing entries in ARMTargetLowering::getTargetNodeName. 
llvm-svn: 122111
 2010-12-18 00:04:26 +00:00
Bill Wendling
b1f6875ae3 Whitespace fixes. No functionality change. 
llvm-svn: 122110
 2010-12-17 23:27:41 +00:00
Jakob Stoklund Olesen
6498db2c8c Avoid dereferencing end() in collectInterferingVRegs() when there is no 
interference.

llvm-svn: 122108
 2010-12-17 23:16:38 +00:00
Jakob Stoklund Olesen
db4b62f32e Make the -verify-regalloc command line option available to base classes as 
RegAllocBase::VerifyEnabled.

Run the machine code verifier in a few interesting places during RegAllocGreedy.

llvm-svn: 122107
 2010-12-17 23:16:35 +00:00
Jakob Stoklund Olesen
df9e162423 Enable loop splitting in RegAllocGreedy. 
The heuristics split around the largest loop where the current register may be
allocated without interference.

llvm-svn: 122106
 2010-12-17 23:16:32 +00:00
Nate Begeman
063d88d6fb Add vector versions of some existing scalar transforms to aid codegen in matching psign & pblend operations to the IR produced by clang/gcc for their C idioms. 
llvm-svn: 122105
 2010-12-17 23:12:19 +00:00
Bill Wendling
c16f9b1ccc During local stack slot allocation, the materializeFrameBaseRegister function 
may be called. If the entry block is empty, the insertion point iterator will be
the "end()" value. Calling ->getParent() on it (among others) causes problems.

Modify materializeFrameBaseRegister to take the machine basic block and insert
the frame base register at the beginning of that block. (It's very similar to
what the code does all ready. The only difference is that it will always insert
at the beginning of the entry block instead of after a previous materialization
of the frame base register. I doubt that that matters here.)

<rdar://problem/8782198>

llvm-svn: 122104
 2010-12-17 23:09:14 +00:00
Bob Wilson
c57c2d755b Fix a DAGCombiner crash when folding binary vector operations with constant 
BUILD_VECTOR operands where the element type is not legal.  I had previously
changed this code to insert TRUNCATE operations, but that was just wrong.

llvm-svn: 122102
 2010-12-17 23:06:49 +00:00
Bob Wilson
347efe0b29 Combine several vector-related DAGCombiner tests. 
llvm-svn: 122101
 2010-12-17 23:06:46 +00:00
Bob Wilson
12f2b81599 Avoid report_fatal_error in ARM's PrintAsmOperand method. 
The standard error handling in AsmPrinter::EmitInlineAsm handles this much
better, so just use it.

llvm-svn: 122100
 2010-12-17 23:06:42 +00:00
Bob Wilson
21981d44ce Remove trailing whitespace. 
llvm-svn: 122099
 2010-12-17 23:06:32 +00:00
Nate Begeman
ef5f3c0fa7 Add support for matching psign & plendvb to the x86 target 
Remove unnecessary pandn patterns, 'vnot' patfrag looks through bitcasts

llvm-svn: 122098
 2010-12-17 22:55:37 +00:00
Jakob Stoklund Olesen
64c013d79d Add more checks to IntervalMapOverlaps::advance() to ensure that advanceTo sees 
monotonic keys.

llvm-svn: 122093
 2010-12-17 22:07:54 +00:00
Jakob Stoklund Olesen
f17722908c It is allowed to call IntervalMap::const_iterator::advanceTo() with a key that 
moves the iterator to end(), and it is valid to call it on end().

That means it is valid to call advanceTo() with any monotonic key sequence.

llvm-svn: 122092
 2010-12-17 22:07:51 +00:00
Owen Anderson
900ac27338 Thumb's forced-PC-alignment requirement applies to the _total_ displacement, not just to the fragment relative 
portion.  While the fragment boundary is usually already aligned, it is possible for it not to be, which 
would lead to a non-aligned final displacement.

llvm-svn: 122091
 2010-12-17 21:49:48 +00:00
Dale Johannesen
c2c6ebd82a Add a transform to DAG Combiner. This improves the 
code for the case where 32-bit divide by constant is
turned into 64-bit multiply by constant.  8771012.

llvm-svn: 122090
 2010-12-17 21:45:49 +00:00
Michael J. Spencer
bc84ff581f Fix 80 col. 
llvm-svn: 122089
 2010-12-17 21:32:47 +00:00
Michael J. Spencer
f2bf8518fb Support/Path: Deprecate PathV1::isAbsolute. 
llvm-svn: 122086
 2010-12-17 21:21:31 +00:00
Benjamin Kramer
8aca840aff PathV2: Use StringRef::substr to simplify substring creation. 
llvm-svn: 122085
 2010-12-17 20:27:37 +00:00
Jakob Stoklund Olesen
0dc90e6b1b Allow missing kill flags on an untied operand of a two-address instruction when 
the operand uses the same register as a tied operand:

  %r1 = add %r1, %r1

If add were a three-address instruction, kill flags would be required on at
least one of the uses. Since it is a two-address instruction, the tied use
operand must not have a kill flag.

This change makes the kill flag on the untied use operand optional.

llvm-svn: 122082
 2010-12-17 19:18:41 +00:00
Jakob Stoklund Olesen
aec6ae67a1 Fix crash when IntervalMapOverlaps::advanceTo moves past the last overlap. 
llvm-svn: 122081
 2010-12-17 19:18:38 +00:00
Jim Grosbach
7ca8ed3d5d If The ARM WriteNopData() gets an unaligned byte count to pad out, fill in with 
a partial value. rdar://8782954

llvm-svn: 122078
 2010-12-17 19:03:02 +00:00
Benjamin Kramer
a7366b3f19 Missed some StringRefRefs. 
llvm-svn: 122077
 2010-12-17 18:59:09 +00:00
Jim Grosbach
9017f2d179 Add bits 31-28 to the Thumb2 encoding of TBB/TBH. 
llvm-svn: 122076
 2010-12-17 18:42:56 +00:00
Jim Grosbach
e0f65aaf8d Handle 2 and 4 byte data blob fixup values for ARM. 
llvm-svn: 122075
 2010-12-17 18:39:10 +00:00
Benjamin Kramer
89db30db3a Pass StringRefs by value, for consistency. 
llvm-svn: 122074
 2010-12-17 18:19:06 +00:00
Jakob Stoklund Olesen
f4a0c81371 Add MachineLoopRange comparators for sorting loop lists by number and by area. 
llvm-svn: 122073
 2010-12-17 18:13:52 +00:00
Owen Anderson
6acf8c9125 Reapply r121905 (automatic synthesis of @llvm.sadd.with.overflow) with a fix for a bug that manifested itself 
on the DragonEgg self-host bot.  Unfortunately, the testcase is pretty messy and doesn't reduce well due to
interactions with other parts of InstCombine.

llvm-svn: 122072
 2010-12-17 18:08:00 +00:00
Rafael Espindola
3da3498b0a Store and free the TargetObjectWriter. 
llvm-svn: 122070
 2010-12-17 18:01:31 +00:00
Rafael Espindola
b9ca29bc1c Stub out explicit MCELFObjectTargetWriter interface. 
llvm-svn: 122067
 2010-12-17 17:45:22 +00:00
Michael J. Spencer
bc0133b07f Cleanup and document .gitignore. 
llvm-svn: 122066
 2010-12-17 17:22:50 +00:00
Michael J. Spencer
63aaa03399 Support: Rename Path.h to PathV1.h and add a new Path.h that includes both V1 and V2. 
llvm-svn: 122065
 2010-12-17 17:22:36 +00:00
Rafael Espindola
38e6fdfd1d Move createELFObjectWriter to its own header. 
llvm-svn: 122064
 2010-12-17 16:59:53 +00:00
Benjamin Kramer
39b30b18fa SimplifyCFG: Ranges can be larger than 64 bits. Fixes Release-selfhost build. 
llvm-svn: 122054
 2010-12-17 10:48:14 +00:00
Benjamin Kramer
2203fe28df Fix mismatched new[]/delete. 
llvm-svn: 122053
 2010-12-17 09:56:50 +00:00
Kalle Raiskila
68f221707a Don't feed 19 bit immediates to ILA. 
Patch (slightly modified) by Visa Putkinen.

llvm-svn: 122052
 2010-12-17 09:36:09 +00:00
Rafael Espindola
709ffb7084 Use getFixupKindInfo to implement isFixupKindPCRel, ELF version. 
llvm-svn: 122050
 2010-12-17 07:28:17 +00:00
Chris Lattner
e92f8121d4 improve switch formation to handle small range 
comparisons formed by comparisons.  For example,
this:

void foo(unsigned x) {
  if (x == 0 || x == 1 || x == 3 || x == 4 || x == 6) 
    bar();
}

compiles into:

_foo:                                   ## @foo
## BB#0:                                ## %entry
	cmpl	$6, %edi
	ja	LBB0_2
## BB#1:                                ## %entry
	movl	%edi, %eax
	movl	$91, %ecx
	btq	%rax, %rcx
	jb	LBB0_3

instead of:

_foo:                                   ## @foo
## BB#0:                                ## %entry
	cmpl	$2, %edi
	jb	LBB0_4
## BB#1:                                ## %switch.early.test
	cmpl	$6, %edi
	ja	LBB0_3
## BB#2:                                ## %switch.early.test
	movl	%edi, %eax
	movl	$88, %ecx
	btq	%rax, %rcx
	jb	LBB0_4

This catches a bunch of cases in GCC, which look like this:

 %804 = load i32* @which_alternative, align 4, !tbaa !0
 %805 = icmp ult i32 %804, 2
 %806 = icmp eq i32 %804, 3
 %or.cond121 = or i1 %805, %806
 %807 = icmp eq i32 %804, 4
 %or.cond124 = or i1 %or.cond121, %807
 br i1 %or.cond124, label %.thread, label %808

turning this into a range comparison.

llvm-svn: 122045
 2010-12-17 06:20:15 +00:00
Daniel Dunbar
eea7fd1c3e MC/ARM: Use aggressive symbol folding (important for jump tables, for example). 
llvm-svn: 122044
 2010-12-17 06:00:24 +00:00
Daniel Dunbar
1f9fd0b79b MC/Expr: Implemnt more aggressive folding during symbol evaluation using 
IsSymbolRefDifferenceFullyResolved(). For example, we will now fold away
something like:
--
_a:
...
L0:
...
L1:
...
.long (L1 - L0) / 2
--

llvm-svn: 122043
 2010-12-17 05:50:33 +00:00
Daniel Dunbar
6979fc1057 MC/Mach-O: On second thought, use a custom hook for enabling aggressive 
IsSymbolRefDifferenceFullyResolved, it turns out this does change behavior on
enough cases for x86-32 that I would rather wait a bit on it.
 - In practice, we will want to change this eventually because it only means we
   generate less relocations (it also eliminates the need for the horrible
   '.set' hack that Darwin requires in some places).

llvm-svn: 122042
 2010-12-17 05:50:29 +00:00
Daniel Dunbar
14208868a4 MC/Mach-O: Implement IsSymbolRefDifferenceFullyResolved. 
- Unlike for fixups, we always do the "reliable" thing (not just for x86_64).
 - Since Darwin 'as' would typically reject things that using this will allow,
   we don't need to worry about compatibility.

llvm-svn: 122038
 2010-12-17 04:54:58 +00:00
Daniel Dunbar
2caf23b5a9 MC/ObjectWriter: Add a new IsSymbolRefDifferenceFullyResolved target format specific hook. 
- Currently just has stub implementations for Mach-O, ELF, and COFF.

llvm-svn: 122037
 2010-12-17 04:54:54 +00:00
Jakob Stoklund Olesen
40f23cd5ca Provide LiveIntervalUnion::Query::checkLoopInterference. 
This is a three-way interval list intersection between a virtual register, a
live interval union, and a loop. It will be used to identify interference-free
loops for live range splitting.

llvm-svn: 122034
 2010-12-17 04:09:47 +00:00
Daniel Dunbar
f77af712b7 MC/Assembler: Strip out object writer arguments, now that it is always available 
-- and remove FIXME asking for the same!

llvm-svn: 122032
 2010-12-17 02:45:59 +00:00