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Author SHA1 Message Date
Wesley Peck
e625128571 Reworking the wording of the "target data string" paragraph in the "Optimizer Improvments" section of the release notes. 
llvm-svn: 102059
 2010-04-22 13:28:34 +00:00
Gabor Greif
13e1b5b1f1 <pre> seems to close <p> 
llvm-svn: 102057
 2010-04-22 10:25:23 +00:00
Gabor Greif
354e1c3939 the validator coughed up some problems, most of them fixed 
llvm-svn: 102056
 2010-04-22 10:21:43 +00:00
Gabor Greif
635f76d9de shorten link 
llvm-svn: 102055
 2010-04-22 10:11:24 +00:00
Chris Lattner
8ff3e6506e static analyzer has its own section 
llvm-svn: 102054
 2010-04-22 06:39:56 +00:00
Chris Lattner
649d0d8f2f add mc and static analyzer blurbs. 
llvm-svn: 102053
 2010-04-22 06:38:11 +00:00
Chris Lattner
5f414c7e6c another checkpoint. 
llvm-svn: 102052
 2010-04-22 06:28:20 +00:00
Chris Lattner
6335b2f168 various updates. 
llvm-svn: 102051
 2010-04-22 05:41:35 +00:00
Chris Lattner
6adbb41d8c fix file header. 
llvm-svn: 102049
 2010-04-22 05:33:15 +00:00
Dan Gohman
31d6b29bae Don't attempt to analyze values which are obviously undef. This fixes some 
assertion failures in extreme cases.

llvm-svn: 102042
 2010-04-22 01:35:11 +00:00
Dan Gohman
1af81d31e9 Tidy a comment. 
llvm-svn: 102041
 2010-04-22 01:30:05 +00:00
Jakob Stoklund Olesen
7806eb2897 Run LiveVariables instead of computing liveness locally in -regalloc=fast. 
This actually makes everything slower, but the plan is to have isel add <kill>
flags the way it is already adding <dead> flags. Then LiveVariables can be
removed again.

When ignoring the time spent in LiveVariables, -regalloc=fast is now twice as
fast as -regalloc=local.

llvm-svn: 102034
 2010-04-21 23:18:07 +00:00
Evan Cheng
a324da99ae Do not try to optimize a copy that has already been marked for deletion. 
llvm-svn: 102027
 2010-04-21 20:57:54 +00:00
Devang Patel
293567822a Add command line option to disable debug info printing in .s file. This option does not impact debug info generation and preservation through earlier compile starges. 
llvm-svn: 102012
 2010-04-21 19:08:53 +00:00
Bob Wilson
7716410af6 Fix a performance problem with the new SSAUpdater. This showed up in the 
GCCAS time for MultiSource/Benchmarks/ASCI_Purple/SMG2000.

llvm-svn: 102009
 2010-04-21 18:39:03 +00:00
Johnny Chen
c23127cb7e Modified some assert() msg strings; no other functionality change. 
llvm-svn: 102008
 2010-04-21 18:37:48 +00:00
Jakob Stoklund Olesen
8cf10fe9e4 Add fast register allocator, enabled with -regalloc=fast. 
So far this is just a clone of -regalloc=local that has been lobotomized to run
25% faster. It drops the least-recently-used calculations, and is just plain
stupid when it runs out of registers.

The plan is to make this go even faster for -O0 by taking advantage of the short
live intervals in unoptimized code. It should not be necessary to calculate
liveness when most virtual registers are killed 2-3 instructions after they are
born.

llvm-svn: 102006
 2010-04-21 18:02:42 +00:00
Devang Patel
158b496cd1 Identify when a lexical scope is split in to multiple instruction ranges. Emit such ranges using DW_AT_ranges. 
llvm-svn: 102004
 2010-04-21 16:32:19 +00:00
Dan Gohman
4ca879bebb Make ScalarEvolution::getConstant support pointer types, for consistency 
with ScalarEvolution's overall approach to pointer types.

llvm-svn: 102003
 2010-04-21 16:04:04 +00:00
Duncan Sands
3a53ba12eb Dragonegg will be released along side llvm-2.7. 
llvm-svn: 102001
 2010-04-21 13:51:48 +00:00
Chris Lattner
97c2f2650f final hacking for tonight, still more to go. 
llvm-svn: 101995
 2010-04-21 06:42:24 +00:00
Chris Lattner
10da8920ca continue the process of detangling this. 
llvm-svn: 101992
 2010-04-21 06:23:40 +00:00
Chris Lattner
53633d42d1 rough pass moving stuff into relevant sections, still much 
editing to do.

llvm-svn: 101987
 2010-04-21 05:17:40 +00:00
Chris Lattner
02810a9a52 remove ldc, rubinious, macruby, icedtea, llvm-lua, which 
don't have updates for 2.7.

llvm-svn: 101985
 2010-04-21 04:28:21 +00:00
Evan Cheng
dbfb7dc438 Implement -disable-non-leaf-fp-elim which disable frame pointer elimination 
optimization for non-leaf functions. This will be hooked up to gcc's
-momit-leaf-frame-pointer option. rdar://7886181

llvm-svn: 101984
 2010-04-21 03:18:23 +00:00
Evan Cheng
0f4671b0dd isel (i32 anyext i16) as insert_subreg when 16-bit ops are being promoted. 
llvm-svn: 101979
 2010-04-21 01:47:12 +00:00
Evan Cheng
e67a37c4ce Trim include. 
llvm-svn: 101978
 2010-04-21 01:39:06 +00:00
Dan Gohman
4ff2d817a3 Add more const qualifiers on TargetMachine and friends. 
llvm-svn: 101977
 2010-04-21 01:34:56 +00:00
Dan Gohman
6bde42d9f5 Update CMakeLists.txt. 
llvm-svn: 101976
 2010-04-21 01:32:29 +00:00
Dan Gohman
1d3532d925 Move several SelectionDAG-independent utility functions out of the 
SelectionDAG directory and into a new Analysis.cpp file.

llvm-svn: 101975
 2010-04-21 01:22:34 +00:00
Johnny Chen
6e4b1607ee Thumb instructions which have reglist operands at the end and predicate operands 
before reglist were not properly handled with respect to IT Block.  Fix that by
creating a new method ARMBasicMCBuilder::DoPredicateOperands() used by those
instructions for disassembly.  Add a test case.

llvm-svn: 101974
 2010-04-21 01:01:19 +00:00
Chris Lattner
c840cfe5c9 Implement (but don't enable) PR6724 and rdar://6295824. In short, 
we have RefreshCallGraph detect when a function pass devirtualizes
a call, and have CGSCCPassMgr iterate (up to a count) when this 
happens.  This allows (in the example) GVN to devirtualize the 
call in foo, then the inliner to inline it away.

This is not currently enabled because I haven't done any analysis
on the (potentially substantial) code size or performance impact of
doing this, and guess what, it exposes callgraph updating bugs in
various passes.  This is progress though, and you can play with it
by passing -max-cg-scc-iterations=5 to opt.

llvm-svn: 101973
 2010-04-21 00:47:40 +00:00
Evan Cheng
a0c4b2952f - Clean up some crappy code which deals with coalescing of copies which look at 
extract_subreg / insert_subreg, etc.
- Add support for more aggressive insert_subreg coalescing.

llvm-svn: 101971
 2010-04-21 00:44:22 +00:00
Dan Gohman
4d1724c3e8 Revert r101471. For tight recursive functions which have multiple 
recursive callsites, inlining can reduce the number of calls by
exponential factors, as it does in
MultiSource/Benchmarks/Olden/treeadd. More involved heuristics
will be needed.

llvm-svn: 101969
 2010-04-21 00:43:30 +00:00
Bill Wendling
9bf4b878e0 Handle a displacement location in 64-bit as an RIP-relative displacement. It 
fixes a bug (<rdar://problem/7880900>) in the JIT. This code wouldn't work:

target triple = "x86_64-apple-darwin"

define double @func(double %a) {
  %tmp1 = fmul double %a, 5.000000e-01            ; <double> [#uses=1]
  ret double %tmp1
}

define i32 @main() nounwind {
  %1 = call double @func(double 4.770000e-04) ; <i64> [#uses=0]
  ret i32 0
}

llvm-svn: 101965
 2010-04-21 00:34:04 +00:00
Evan Cheng
69142a2a6a Rewrite machine cse to avoid recursion. 
llvm-svn: 101964
 2010-04-21 00:21:07 +00:00
Dan Gohman
570b621976 Add another variant of this test which found a place where 
CodeGen's ComputeMaskedBits was being over-conservative when computing
bits for an ADD.

llvm-svn: 101963
 2010-04-21 00:19:28 +00:00
Chris Lattner
6db0f451a7 teach the x86 address matching stuff to handle 
(shl (or x,c), 3) the same as (shl (add x, c), 3)
when x doesn't have any bits from c set.

This finishes off PR1135.  Before we compiled the block to:
to:

LBB0_3:                                 ## %bb
	cmpb	$4, %dl
	sete	%dl
	addb	%dl, %cl
	movb	%cl, %dl
	shlb	$2, %dl
	addb	%r8b, %dl
	shlb	$2, %dl
	movzbl	%dl, %edx
	movl	%esi, (%rdi,%rdx,4)
	leaq	2(%rdx), %r9
	movl	%esi, (%rdi,%r9,4)
	leaq	1(%rdx), %r9
	movl	%esi, (%rdi,%r9,4)
	addq	$3, %rdx
	movl	%esi, (%rdi,%rdx,4)
	incb	%r8b
	decb	%al
	movb	%r8b, %dl
	jne	LBB0_1

Now we produce:

LBB0_3:                                 ## %bb
	cmpb	$4, %dl
	sete	%dl
	addb	%dl, %cl
	movb	%cl, %dl
	shlb	$2, %dl
	addb	%r8b, %dl
	shlb	$2, %dl
	movzbl	%dl, %edx
	movl	%esi, (%rdi,%rdx,4)
	movl	%esi, 8(%rdi,%rdx,4)
	movl	%esi, 4(%rdi,%rdx,4)
	movl	%esi, 12(%rdi,%rdx,4)
	incb	%r8b
	decb	%al
	movb	%r8b, %dl
	jne	LBB0_1

llvm-svn: 101958
 2010-04-20 23:18:40 +00:00
Dale Johannesen
510282d54b Because of the EMMS problem, right now we have to support 
user-defined operations that use MMX register types, but
the compiler shouldn't generate them on its own.  This adds
a Synthesizable abstraction to represent this, and changes
the vector widening computation so it won't produce MMX types.
(The motivation is to remove noise from the ABI compatibility
part of the gcc test suite, which has some breakage right now.)

llvm-svn: 101951
 2010-04-20 22:34:09 +00:00
Devang Patel
ef601352ff Rename ValueMapTy as ValueToValueMapTy to clearly indicate that this has no replationship with ADT/ValueMap. 
llvm-svn: 101950
 2010-04-20 22:24:18 +00:00
Devang Patel
788913a131 There is no need to install ValueMapper.h header. 
llvm-svn: 101949
 2010-04-20 22:18:31 +00:00
Johnny Chen
d7ffae797f Better error-handling of getBitFieldInvMask() where msb < lsb (encoding error), 
instead of just asserting.

llvm-svn: 101942
 2010-04-20 21:29:28 +00:00
Duncan Sands
8c2c90c3f9 I plan to release a version of dragonegg based on llvm-2.7 shortly 
after the llvm-2.7 release.

llvm-svn: 101934
 2010-04-20 19:40:58 +00:00
Jakob Stoklund Olesen
1ba4c9d2c2 When MachineLICM is hoisting a physical register after regalloc, make sure the 
register is not killed in the loop.

This fixes 188.ammp on ARM where the post-ra scheduler would grab a register
that looked available but wasn't.

A testcase would be huge and fragile, sorry.

llvm-svn: 101930
 2010-04-20 18:45:47 +00:00
Johnny Chen
9998480f92 When doing Thumb disassembly, there's no need to consider t2ADDrSPi12/t2SUBrSPi12, 
as their generic counterparts t2ADDri12/t2SUBri12 should suffice.

llvm-svn: 101929
 2010-04-20 18:45:24 +00:00
Bill Wendling
a87efb5d0f Move CodeGen/X86/2010-04-19-DAGCombineCrash.ll into CodeGen/X86/crash.ll. Also 
reduce.

llvm-svn: 101925
 2010-04-20 18:14:47 +00:00
Johnny Chen
bd5bf58029 For t2LDRT, t2LDRBT, t2LDRHT, t2LDRSBT, and t2LDRSHT, if Rn(Inst{19-16})=='1111', 
transform the Opcode to the corresponding t2LDR*pci counterpart.

Ref: A8.6.86 LDRT, A8.6.65 LDRBT, A8.6.77 LDRHT, A8.6.81 LDRSBT, A8.6.85 LDRSHT
llvm-svn: 101915
 2010-04-20 17:28:50 +00:00
Evan Cheng
ebe1fbf676 Typo. 
llvm-svn: 101914
 2010-04-20 17:27:38 +00:00
Devang Patel
def402649b Add RUN: 
llvm-svn: 101913
 2010-04-20 17:20:10 +00:00
Dan Gohman
44ab9ed9b8 Sink the CopyToExportRegsIfNeeded calls out of SelectionDAGISel 
into SelectionDAGBuilder. This avoids a separate pass over the
instructions, and has the side effect of providing debug location
information to the copy.

llvm-svn: 101906
 2010-04-20 15:03:56 +00:00