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Author SHA1 Message Date
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
Daniel Dunbar
54b3f3e5db MC/Assembler: Make the MCObjectWriter available through the lifetime of the 
assembler.

llvm-svn: 122031
 2010-12-17 02:45:41 +00:00
Jim Grosbach
3bb926adff Trailing whitespace and 80 column fixups. 
llvm-svn: 122026
 2010-12-17 02:10:59 +00:00
Daniel Dunbar
6d4a3e98f3 MC/Target: Remove HasScatteredSymbols target hook variable, which has been 
superceded and was effectively dead.

llvm-svn: 122024
 2010-12-17 02:06:08 +00:00
Daniel Dunbar
0d8fdf42c7 MC/Expr: Simplify. 
llvm-svn: 122023
 2010-12-17 02:05:45 +00:00
Jakob Stoklund Olesen
c63484e962 Complete tests for IntervalMapOverlaps. 
llvm-svn: 122019
 2010-12-17 01:31:49 +00:00
Bob Wilson
e06f6eabe7 Fix crash compiling a QQQQ REG_SEQUENCE for a Neon vld3_lane operation. 
Radar 8776599

llvm-svn: 122018
 2010-12-17 01:21:12 +00:00
Bob Wilson
125f1a26e0 Use PairDRegs to implement ConcatVectors. No functionality change. 
llvm-svn: 122017
 2010-12-17 01:21:08 +00:00
Bob Wilson
f6fe49f7d2 Fix a comment typo. 
llvm-svn: 122016
 2010-12-17 01:21:05 +00:00
Bob Wilson
8d93d7b4fd Neon intrinsic tests need to be compiled for Cortex-A9 for f16 support. 
llvm-svn: 122015
 2010-12-17 01:21:03 +00:00
Dan Gohman
f8949c3d1a Revert r64460. strtol and friends cannot be marked readonly, even with 
a null endptr argument, because they may write to errno.

This fixes a seflhost miscompile observed on Linux targets when TBAA
was enabled.

llvm-svn: 122014
 2010-12-17 01:09:43 +00:00
Daniel Dunbar
565c90b316 MC: Remove another dead MCAssembler argument, and update clients. 
llvm-svn: 122013
 2010-12-17 01:07:35 +00:00
Daniel Dunbar
9f83b4d605 MC: Remove dead MCAssembler argument -- Rafael, can you check the FIXME I added 
here?

llvm-svn: 122012
 2010-12-17 01:07:31 +00:00
Daniel Dunbar
17e37880d3 MC: Simplify (remove unnecessary MCAssembler argument, obsoleted by containment 
in MCAsmLayout).

llvm-svn: 122011
 2010-12-17 01:07:28 +00:00
Daniel Dunbar
8b0153bed2 Fix 80-col viola. 
llvm-svn: 122010
 2010-12-17 01:07:25 +00:00
Daniel Dunbar
ed4c226521 Write => in a more normal form. 
llvm-svn: 122009
 2010-12-17 01:07:22 +00:00
Daniel Dunbar
2a0a64029a MC/Expr: Simplify (and add a FIXME). 
llvm-svn: 122008
 2010-12-17 01:07:20 +00:00
Rafael Espindola
bd13ceed72 "Fix" FDE alignment to match what gas does. 
llvm-svn: 122006
 2010-12-17 00:28:02 +00:00
Rafael Espindola
3ee4530406 Make pushq produce signed relocations. 
llvm-svn: 122005
 2010-12-16 22:50:01 +00:00
Michael J. Spencer
9a5a165e90 llvm-dis: Fix memory leak. ParseBitcodeFile should be taking ownership of 
the MemoryBuffer*, however, it doesn't seem to delete it.

llvm-svn: 122004
 2010-12-16 22:37:52 +00:00