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68596 Commits

Author SHA1 Message Date
Chris Lattner 11a33811b6 flags -> glue for selectiondag 
llvm-svn: 122509
 2010-12-23 17:24:32 +00:00
Chris Lattner f647e95b9a sdisel flag -> glue. 
llvm-svn: 122507
 2010-12-23 17:13:18 +00:00
Chris Lattner f7f9e8c978 continue renaming flag -> glue. 
llvm-svn: 122506
 2010-12-23 17:03:20 +00:00
Torok Edwin 5abf51bde0 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).

llvm-svn: 122497
 2010-12-23 15:49:26 +00:00
Benjamin Kramer dfa40f8f19 Remove/fix invalid README entries. The well thought out strcpy function doesn't return a pointer to the end of the string. 
llvm-svn: 122496
 2010-12-23 15:32:07 +00:00
Benjamin Kramer b37ae33125 Remove some obsolete README items, add a new one off the top of my head. 
llvm-svn: 122495
 2010-12-23 15:07:02 +00:00
Andrew Trick 528fad91d2 Reorganize ListScheduleBottomUp in preparation for modeling machine cycles and instruction issue. 
llvm-svn: 122491
 2010-12-23 05:42:20 +00:00
Andrew Trick a52f325c35 Converted LiveRegCycles to LiveRegGens. It's easier to work with and allows multiple nodes per cycle. 
llvm-svn: 122474
 2010-12-23 04:16:14 +00:00
Andrew Trick 12acde11cb In CheckForLiveRegDef use TRI->getOverlaps. 
llvm-svn: 122473
 2010-12-23 03:43:21 +00:00
Andrew Trick 033efdf4d7 Fixes PR8823: add-with-overflow-128.ll 
In the bottom-up selection DAG scheduling, handle two-address
instructions that read/write unspillable registers. Treat
the entire chain of two-address nodes as a single live range.

llvm-svn: 122472
 2010-12-23 03:15:51 +00:00
Mon P Wang 18b762a946 Preserve the address space when generating bitcasts for MemTransferInst in ConvertToScalarInfo 
llvm-svn: 122462
 2010-12-23 01:41:32 +00:00
Jeffrey Yasskin 9b43f33620 Change all self assignments X=X to (void)X, so that we can turn on a 
new gcc warning that complains on self-assignments and
self-initializations.

llvm-svn: 122458
 2010-12-23 00:58:24 +00:00
Bill Wendling f14bb1e98b Default to armv7 instead of armv6. 
llvm-svn: 122457
 2010-12-23 00:49:18 +00:00
Jim Grosbach 8c48503baa Trailing whitespace. 
llvm-svn: 122456
 2010-12-22 23:26:02 +00:00
Benjamin Kramer 1f4dfbbcb0 DAGCombine add (sext i1), X into sub X, (zext i1) if sext from i1 is illegal. The latter usually compiles into smaller code. 
example code:
unsigned foo(unsigned x, unsigned y) {
  if (x != 0) y--;
  return y;
}

before:
  _foo:                           ## @foo
    cmpl  $1, 4(%esp)             ## encoding: [0x83,0x7c,0x24,0x04,0x01]
    sbbl  %eax, %eax              ## encoding: [0x19,0xc0]
    notl  %eax                    ## encoding: [0xf7,0xd0]
    addl  8(%esp), %eax           ## encoding: [0x03,0x44,0x24,0x08]
    ret                           ## encoding: [0xc3]

after:
  _foo:                           ## @foo
    cmpl  $1, 4(%esp)             ## encoding: [0x83,0x7c,0x24,0x04,0x01]
    movl  8(%esp), %eax           ## encoding: [0x8b,0x44,0x24,0x08]
    adcl  $-1, %eax               ## encoding: [0x83,0xd0,0xff]
    ret                           ## encoding: [0xc3]

llvm-svn: 122455
 2010-12-22 23:17:45 +00:00
Benjamin Kramer 8ef5001b27 InstCombine: creating selects from -1 and 0 is fine, they combine into a sext from i1. 
llvm-svn: 122453
 2010-12-22 23:12:15 +00:00
Benjamin Kramer 6020ed9d99 X86: Lower a select directly to a setcc_carry if possible. 
int test(unsigned long a, unsigned long b) { return -(a < b); }
compiles to
  _test:                              ## @test
    cmpq  %rsi, %rdi                  ## encoding: [0x48,0x39,0xf7]
    sbbl  %eax, %eax                  ## encoding: [0x19,0xc0]
    ret                               ## encoding: [0xc3]
instead of
  _test:                              ## @test
    xorl  %ecx, %ecx                  ## encoding: [0x31,0xc9]
    cmpq  %rsi, %rdi                  ## encoding: [0x48,0x39,0xf7]
    movl  $-1, %eax                   ## encoding: [0xb8,0xff,0xff,0xff,0xff]
    cmovael %ecx, %eax                ## encoding: [0x0f,0x43,0xc1]
    ret                               ## encoding: [0xc3]

llvm-svn: 122451
 2010-12-22 23:09:28 +00:00
Rafael Espindola 4124ab1255 Add r122359 back now that the bug in MCDwarfLineAddrFragment fragment has been 
fixed.

llvm-svn: 122448
 2010-12-22 22:16:24 +00:00
Dan Gohman 0bbdaf5723 Constify. 
llvm-svn: 122447
 2010-12-22 22:10:08 +00:00
Rafael Espindola d91e11932c Assert that the AddrDelta expression is really constant and wrap it in a set 
if we have a lame assembler.

llvm-svn: 122446
 2010-12-22 22:04:28 +00:00
Jakob Stoklund Olesen 0acb69d53c When RegAllocGreedy decides to spill the interferences of the current register, 
pick the victim with the lowest total spill weight.

llvm-svn: 122445
 2010-12-22 22:01:30 +00:00
Jakob Stoklund Olesen 29836e6572 Include a shadow of the original CFG edges in the edge bundle graph. 
llvm-svn: 122444
 2010-12-22 22:01:28 +00:00
Rafael Espindola a6cd2d821a Rename NeedsSetToChangeDiffSize to HasAggressiveSymbolFolding which is a much 
better name and matches what is used in the MachO writer.

llvm-svn: 122443
 2010-12-22 21:51:29 +00:00
Daniel Dunbar ac8173cf71 MC/Mach-O/ARM: Don't try to use scattered relocs for BR24 fixups. 
llvm-svn: 122441
 2010-12-22 21:26:43 +00:00
Rafael Espindola 1af01a69d4 Add reduced test from 8845. 
llvm-svn: 122438
 2010-12-22 21:15:13 +00:00
Rafael Espindola 0e14b61c0b Revert r122359 while I debug PR8845. 
llvm-svn: 122427
 2010-12-22 19:05:49 +00:00
Matt Beaumont-Gay 6b5d2519b3 Fix another conditional expression mismatched enum type warning. 
llvm-svn: 122419
 2010-12-22 18:25:55 +00:00
Duncan Sands a45cfbd405 When determining whether the new instruction was already present in 
the original instruction, half the cases were missed (making it not
wrong but suboptimal).  Also correct a typo (A <-> B) in the second
chunk. 

llvm-svn: 122414
 2010-12-22 17:15:25 +00:00
Duncan Sands bab9456f81 Make this test not depend on how the variable is named. 
llvm-svn: 122413
 2010-12-22 17:08:04 +00:00
Daniel Dunbar 45140d2efc MC/Mach-O/ARM: We always use the SECTDIFF reloc type on ARM, which is 
esp. important given that the LOCAL_SECTDIFF enumeration got redefined.

llvm-svn: 122412
 2010-12-22 16:52:19 +00:00
Daniel Dunbar 11617c8666 MC/Mach-O/ARM: Clone off an ARM version of RecordScatteredRelocation until I figure out how it is supposed to work. 
llvm-svn: 122410
 2010-12-22 16:45:29 +00:00
Daniel Dunbar dde72ef0c1 MC/Mach-O: Return to reporting errors if we see unexpected fixup kinds. 
llvm-svn: 122409
 2010-12-22 16:32:41 +00:00
Daniel Dunbar a191cfd97e MC/Mach-O/ARM: Recognize generic _Data_N fixup kinds. 
llvm-svn: 122408
 2010-12-22 16:32:37 +00:00
Daniel Dunbar 9ccf843a61 MC/Mach-O/ARM: Add enough relocation logic to get BR24 relocations. 
llvm-svn: 122407
 2010-12-22 16:19:24 +00:00
Daniel Dunbar 56f13732e2 MC/Mach-O/ARM: Fix thinko. 
llvm-svn: 122406
 2010-12-22 16:19:20 +00:00
Rafael Espindola 50ce2f06de Use references and simplify. 
llvm-svn: 122405
 2010-12-22 16:11:57 +00:00
Rafael Espindola 73c0ae77ca Simplify the handling of .size expressions. 
llvm-svn: 122404
 2010-12-22 16:03:00 +00:00
Daniel Dunbar 083132e131 MC/Mach-O/ARM: Stub out RecordARMRelocation, which is mostly a copy of 
RecordRelocation with lots of FIXMEs.

llvm-svn: 122402
 2010-12-22 13:50:05 +00:00
Daniel Dunbar a63db77f2e Simplify. 
llvm-svn: 122401
 2010-12-22 13:49:56 +00:00
Daniel Dunbar 1e5be3653c MC/Mach-O: Split out RecordARMRelocation for now, it is weird enough it isn't 
clear how to keep in the generic path (yet).
 - Will revisit when it actually works.

llvm-svn: 122400
 2010-12-22 13:49:43 +00:00
Duncan Sands fbb9ac3cca Add a generic expansion transform: A op (B op' C) -> (A op B) op' (A op C) 
if both A op B and A op C simplify.  This fires fairly often but doesn't
make that much difference.  On gcc-as-one-file it removes two "and"s and
turns one branch into a select.

llvm-svn: 122399
 2010-12-22 13:36:08 +00:00
Che-Liang Chiou aaedf8be1c ptx: add ld instruction and test 
llvm-svn: 122398
 2010-12-22 10:38:51 +00:00
Duncan Sands 3547d2ebd8 Add some statistics, good for understanding how much more powerful 
instcombine is compared to instsimplify.

llvm-svn: 122397
 2010-12-22 09:40:51 +00:00
Oscar Fuentes 9f2b3842a3 Fixes file extension for loadable modules on OS X. 
Patch by Wesley Peck!

llvm-svn: 122395
 2010-12-22 08:30:17 +00:00
Chris Lattner cafc1e60bb Fix a bug in ReduceLoadWidth that wasn't handling extending 
loads properly.  We miscompiled the testcase into:

_test:                                  ## @test
	movl	$128, (%rdi)
	movzbl	1(%rdi), %eax
	ret

Now we get a proper:

_test:                                  ## @test
	movl	$128, (%rdi)
	movsbl	(%rdi), %eax
	movzbl	%ah, %eax
	ret

This fixes PR8757.

llvm-svn: 122392
 2010-12-22 08:02:57 +00:00
Chris Lattner 9a499e96eb more cleanups, move a check for "roundedness" earlier to reject 
unhanded cases faster and simplify code.

llvm-svn: 122391
 2010-12-22 08:01:44 +00:00
Chris Lattner 222374d886 reduce indentation and improve comments, no functionality change. 
llvm-svn: 122389
 2010-12-22 07:36:50 +00:00
Wesley Peck ff2cd2ea6c Don't generate carry bit when loading immediate values on the Microblaze. 
llvm-svn: 122385
 2010-12-22 01:29:32 +00:00
Wesley Peck 3a3a5795c5 Add support for some of the LLVM atomic operations to the MBlaze backend. 
llvm-svn: 122384
 2010-12-22 01:15:01 +00:00
Wesley Peck 1cd1554ca0 Modeling the carry bit in the MSR register of the MicroBlaze. 
llvm-svn: 122381
 2010-12-22 00:53:07 +00:00