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Author SHA1 Message Date
Lang Hames
0b23dc0cc8 Fixed a bug in the PBQP allocator's findCoalesces method. 
Previously spill registers, whose def indexes are not defined, would sometimes be improperly marked as coalescable with conflicting registers. The new findCoalesces routine conservatively assumes that any register with at least one undefined def is not coalescable with any register it interferes with.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95636 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-09 00:50:27 +00:00
Chris Lattner
e16b0fc3cb Implement x86 asm parsing support for %st and %st(4) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95634 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-09 00:49:22 +00:00
Lang Hames
ddea94a819 Added copy sensible construction & assignment to PBQP graphs and fixed a memory access bug in the heuristic solver. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95633 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-09 00:45:48 +00:00
Eric Christopher
1926b648e1 Add a new pass to do llvm.objsize lowering using SCEV. 
Initial skeleton and SCEVUnknown lowering implemented,
the rest should come relatively quickly.  Move testcase
to new directory.

Move pass to right before SimplifyLibCalls - which is
moved down a bit so we can take advantage of a few opts.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95628 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-09 00:35:38 +00:00
Chris Lattner
b8d6e98e56 pass stringref by value instead of by const& 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95627 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-09 00:34:28 +00:00
Chris Lattner
cf031f6d66 move PR6212 to this file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95624 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-09 00:11:10 +00:00
Dan Gohman
5938a3e681 Implement AsmPrinter support for several more operators which have 
direct MCExpr equivalents. Don't use MCExpr::Shr because it isn't
consistent between targets.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95620 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-09 00:02:37 +00:00
Dan Gohman
036c130e90 Document that MCExpr::Mod is actually remainder. 
Document that MCExpr::Div, Mod, and the comparison operators are all
signed operators.

Document that the comparison operators' results are target-dependent.

Document that the behavior of shr is target-dependent.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95619 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-08 23:58:47 +00:00
Chris Lattner
8609fda0f7 fix some problems handling large vectors reported in PR6230 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95616 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-08 23:56:03 +00:00
Chris Lattner
c133457269 this is done, tested by CodeGen/ARM/iabs.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95609 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-08 23:48:10 +00:00
Jim Grosbach
a87ded2695 tighten up eh.setjmp sequence a bit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95603 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-08 23:22:00 +00:00
Chris Lattner
9517554458 now that @GOTOFF is no longer represented as a suffix on a 
MCSymbol, we can remove the 'suffix' argument of 
GetBlockAddressSymbol.  Do so.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95601 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-08 23:10:08 +00:00
Chris Lattner
3484110c67 unify the paths for external symbols and global variables: 
2 files changed, 48 insertions(+), 83 deletions(-)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95599 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-08 23:03:41 +00:00
Chris Lattner
8fb2e233a0 switch the rest of the "@ concatentation" logic in the X86 
backend to use X86MCTargetExpr, simplifying a bunch of code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95595 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-08 22:52:47 +00:00
Sean Callanan
3bdbdd06c8 Fixed the AT&T AsmLexer to report the proper strings 
for register tokens.  Before, if it encountered
'%al,' it would report 'al,' as the token.  Now it
correctly reports '%al'.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95594 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-08 22:50:23 +00:00
Chris Lattner
017ec35e28 switch ELF @GOTOFF references to use X86MCTargetExpr. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95593 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-08 22:33:55 +00:00
Dan Gohman
54e72eca0c ConstantFoldConstantExpression can theoretically return the original 
expression; don't go into an infinite loop if it does.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95591 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-08 22:19:11 +00:00
Chris Lattner
25ceb5f317 add an x86 implementation of MCTargetExpr for 
representing @GOT and friends.  Use it for
personality references as a first use.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95588 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-08 22:09:08 +00:00
Chris Lattner
df9c4380ee don't make hte dtor private or we can't construct the class. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95587 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-08 22:07:36 +00:00
Johnny Chen
15b423f772 Add VCVTR (between floating-point and integer, VFP) for disassembly purpose. 
The 'R' suffix means the to-integer operations use the rounding mode specified
by the FPSCR, encoded as Inst{7} = 0.

A8.6.295


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95584 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-08 22:02:41 +00:00
Dan Gohman
618f17702d When CodeGen'ing unoptimized code, there may be unfolded constant expressions 
in global initializers. Instead of aborting, attempt to fold them on the
spot. If folding succeeds, emit the folded expression instead.

This fixes PR6255.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95583 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-08 22:02:38 +00:00
Dan Gohman
baf0c67988 Add const qualifiers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95582 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-08 22:00:06 +00:00
Dale Johannesen
8ac38f2a61 Apply the 95471 fix to SelectionDAGBuilder as well; 
we can get in here if FastISel gives up in a block.
(Actually the two copies of this need to be unified.  Later.)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95579 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-08 21:53:27 +00:00
Dan Gohman
c2e93b255e In guaranteed tailcall mode, don't decline the tailcall optimization 
for blocks ending in "unreachable".


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95565 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-08 20:34:14 +00:00
Dan Gohman
1797ed50f4 Rename the PerformTailCallOpt variable to GuaranteedTailCallOpt to reflect 
its current purpose.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95564 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-08 20:27:50 +00:00
Johnny Chen
7edd8e38c4 Add VCMP (VFP floating-point compare without 'E' bit set) for disassembly purpose. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95560 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-08 19:41:48 +00:00
Chris Lattner
5d917a8952 add scaffolding for target-specific MCExprs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95559 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-08 19:41:07 +00:00
Johnny Chen
23401d6f8c Added VMOVRRS/VMOVSRR to ARMInstrVFP.td for disassembly purpose. 
A8.6.331 VMOV (between two ARM core registers and two single-precision registers)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95548 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-08 17:26:09 +00:00
Torok Edwin
acf2a65786 Fix x86 JIT stub on MSVC. 
Thanks to Kristaps Straupe for noticing the bug.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95537 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-08 08:37:27 +00:00
Nick Lewycky
337c6a8edd Make the destructor for TypeMapBase protected. Spotted by Duncan Sands with 
cppcheck!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95527 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-07 21:13:46 +00:00
Duncan Sands
3dc32ed569 Give DwarfPrinter a protected (but not virtual) destructor. Cppcheck 
warns about this base class not having a virtual destructor, but since
this class has no virtual methods and neither it or the types derived
from it has a destructor, a protected trivial destructor will do (and
shuts cppcheck up) the trick without the cost of introducing a vtable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95526 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-07 21:09:22 +00:00
Bruno Cardoso Lopes
6059b8551d Add suport for VASTART on Mips. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95506 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-06 21:00:02 +00:00
Bruno Cardoso Lopes
b37a742333 First step towards varargs support in Mips: 
- o32 cc must pass all arguments in A0...A3 and stack regardless
if its type (but respect the alignment).
- Store all variable arguments back to the caller stack.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95500 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-06 19:20:49 +00:00
Evan Cheng
00a99a3584 Run codegen dce pass for all targets at all optimization levels. Previously it's 
only run for x86 with fastisel. I've found it being very effective in
eliminating some obvious dead code as result of formal parameter lowering
especially when tail call optimization eliminated the need for some of the loads
from fixed frame objects. It also shrinks a number of the tests. A couple of
tests no longer make sense and are now eliminated.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95493 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-06 09:07:11 +00:00
Bob Wilson
5d48c6d2cb Fix an uninitialized value. Radar 7609421. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95488 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-06 05:55:20 +00:00
Rafael Espindola
2f82ca904a Fix alignment on ppc linux. This fixes the build of crtend.o 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95477 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-06 03:32:21 +00:00
Evan Cheng
f22f9b35d6 Do not emit callseq instructions around sibcalls. This eliminated some unnecessary stack adjustments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95475 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-06 03:28:46 +00:00
Dale Johannesen
dc91856575 After Victor's latest commits I am seeing null 
addresses in dbg.declare; ignore this for the
moment to prevent things from breaking.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95471 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-06 02:26:02 +00:00
Victor Hernandez
c8d7b85ba1 Linker should not remap null operands of metadata 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95468 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-06 01:31:55 +00:00
Victor Hernandez
2b3365ca1d Function-local metadata whose operands had been optimized to no longer refer to function-local IR were not getting written by BitcodeWriter; solution is for these metadata to be enumerated just like global metadata. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95467 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-06 01:21:09 +00:00
Jakob Stoklund Olesen
570a4a5d9c Reintroduce the InlineHint function attribute. 
This time it's for real! I am going to hook this up in the frontends as well.

The inliner has some experimental heuristics for dealing with the inline hint.
When given a -respect-inlinehint option, functions marked with the inline
keyword are given a threshold just above the default for -O3.

We need some experiments to determine if that is the right thing to do.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95466 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-06 01:16:28 +00:00
Devang Patel
b4645643de Set DW_AT_artificial only if argument is marked as artificial. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95461 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-06 01:02:37 +00:00
Bob Wilson
e6373eb826 Handle AddrMode6 (for NEON load/stores) in Thumb2's rewriteT2FrameIndex. 
Radar 7614112.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95456 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-06 00:24:38 +00:00
Jakob Stoklund Olesen
d450e5b886 Don't unroll loops containing function calls. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95454 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-05 23:21:31 +00:00
Jakob Stoklund Olesen
aa034fa229 Update CodeMetrics to count 'big' function calls explicitly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95453 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-05 23:21:18 +00:00
Devang Patel
6cda22eae4 Do not generate specification DIE for nested functions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95452 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-05 23:09:20 +00:00
Chris Lattner
8f60e4d679 fix incorrect encoding of SBB8mi that Kevin noticed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95448 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-05 22:56:11 +00:00
Chris Lattner
3f1118310e fix a case where we'd mis-encode fisttp because of an incorrect (and 
redundant with a correct one) pattern that was added for the disassembler.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95446 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-05 22:49:06 +00:00
Chris Lattner
faa75f6f6f add note. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95445 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-05 22:48:33 +00:00
Chris Lattner
342cbdcc5e print encodings like this: 
pslld	69, %mm3                ## encoding: [0x0f,0xf2,0x1c,0x25,0x45,0x00,0x00,0x00]

instead of like this:
	pslld	69, %mm3                ## encoding: [0x0f,0xf2,0x1c,0x25,0x45,0000,0000,0000]

this only affects 0.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95441 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-05 22:20:08 +00:00
Chris Lattner
39a612e6f9 port X86InstrInfo::determineREX over to the new encoder. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95440 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-05 22:10:22 +00:00
Jakob Stoklund Olesen
58e9ee85fd Teach SimplifyCFG about magic pointer constants. 
Weird code sometimes uses pointer constants other than null. This patch
teaches SimplifyCFG to build switch instructions in those cases.

Code like this:

void f(const char *x) {
  if (!x)
    puts("null");
  else if ((uintptr_t)x == 1)
    puts("one");
  else if (x == (char*)2 || x == (char*)3)
    puts("two");
  else if ((intptr_t)x == 4)
    puts("four");
  else
    puts(x);
}

Now becomes a switch:

define void @f(i8* %x) nounwind ssp {
entry:
  %magicptr23 = ptrtoint i8* %x to i64            ; <i64> [#uses=1]
  switch i64 %magicptr23, label %if.else16 [
    i64 0, label %if.then
    i64 1, label %if.then2
    i64 2, label %if.then9
    i64 3, label %if.then9
    i64 4, label %if.then14
  ]

Note that LLVM's own DenseMap uses magic pointers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95439 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-05 22:03:18 +00:00
Chris Lattner
00cb3fe786 wire up 64-bit MCCodeEmitter. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95438 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-05 21:51:35 +00:00
Chris Lattner
be1778fea7 really kill off the last MRMInitReg inst, remove logic from encoder. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95437 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-05 21:34:18 +00:00
Chris Lattner
28c1d29b09 lower the last of the MRMInitReg instructions in MCInstLower. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95435 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-05 21:30:49 +00:00
Chris Lattner
35e0e84f93 teach X86MCInstLower to lower the MOV32r0 and MOV8r0 
pseudo instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95433 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-05 21:21:06 +00:00
Chris Lattner
ff928976f8 genericize helpers, use them for MOV16r0/MOV64r0 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95432 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-05 21:15:57 +00:00
Chris Lattner
c74e333ecc factor code better in X86MCInstLower::Lower, teach it to 
lower the SETB* instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95431 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-05 21:13:48 +00:00
Chris Lattner
74529826a7 fix logical-select to invoke filecheck right, and fix hte instcombine 
xform it is checking to actually pass.  There is no need to match
m_SelectCst<0, -1> since instcombine canonicalizes that into not(sext).

Add matches for sext(not(x)) in addition to not(sext(x)).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95420 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-05 19:53:02 +00:00
Chris Lattner
82ed17eb47 implement the rest of the encoding types. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95414 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-05 19:37:31 +00:00
Chris Lattner
74a2151392 move functions for decoding X86II values into the X86II namespace. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95410 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-05 19:24:13 +00:00
Dan Gohman
aa0e523287 Implement releaseMemory in CodeGenPrepare and free the BackEdges 
container data. This prevents it from holding onto dangling
pointers and potentially behaving unpredictably.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95409 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-05 19:24:11 +00:00
Chris Lattner
a62fe66f99 constant propagate a method away. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95408 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-05 19:20:30 +00:00
Dan Gohman
17146baef5 Use a SmallSetVector instead of a SetVector; this code showed up as a 
malloc caller in a profile.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95407 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-05 19:20:15 +00:00
Chris Lattner
a3a0db0121 change getSizeOfImm and getBaseOpcodeFor to just take 
TSFlags directly instead of a TargetInstrDesc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95405 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-05 19:16:26 +00:00
Chris Lattner
daa4555793 add some more encodings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95403 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-05 19:04:37 +00:00
Eric Christopher
724bea90b0 Remove this code for now. I have a better idea and will rewrite with 
that in mind.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95402 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-05 19:04:06 +00:00
Johnny Chen
7acca6707b VMOVRRD and VMOVDRR both have Inst{7-6} = 0b00. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95397 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-05 18:04:58 +00:00
Jeffrey Yasskin
4688261c20 Move --march, --mcpu, and --mattr from JIT/TargetSelect.cpp to lli.cpp. 
llc.cpp also defined these flags, meaning that when I linked all of LLVM's
libraries into a single shared library, llc crashed on startup with duplicate
flag definitions.  This patch passes them through the EngineBuilder into
JIT::selectTarget().


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95390 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-05 16:19:36 +00:00
Daniel Dunbar
73163f875a MC: Change default comment column to 40 characters. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95378 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-05 07:32:18 +00:00
Chris Lattner
0e73c39c70 implement the non-relocation forms of memory operands 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95368 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-05 06:16:07 +00:00
Evan Cheng
5f94193b36 Handle tail call with byval arguments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95351 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-05 02:21:12 +00:00
Chris Lattner
1ac23b1038 start adding MRMDestMem, which requires memory form mod/rm encoding 
to start limping.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95350 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-05 02:18:40 +00:00
Chris Lattner
28249d98e1 Add a few more encodings, we can now encode all of: 
pushl	%ebp
	movl	%esp, %ebp
	movl	$42, %eax
	popl	%ebp
	ret



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95344 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-05 01:53:19 +00:00
Evan Cheng
5ba8bf6d28 When the scheduler unfold a load folding instruction it move some of the predecessors to the unfolded load. It decides what gets moved to the load by checking whether the new load is using the predecessor as an operand. The check neglects the cases whether the predecessor is a flagged scheduling unit. 
rdar://7604000


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95339 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-05 01:27:11 +00:00
Bill Wendling
744f579b63 An empty global constant (one of size 0) may have a section immediately 
following it. However, the EmitGlobalConstant method wasn't emitting a body for
the constant. The assembler doesn't like that. Before, we were generating this:

  .zerofill __DATA, __common, __cmd, 1, 3

This fix puts us back to that semantic.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95336 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-05 00:17:02 +00:00
Bob Wilson
fc375d2200 Do not reassociate expressions with i1 type. SimplifyCFG converts some 
short-circuited conditions to AND/OR expressions, and those expressions
are often converted back to a short-circuited form in code gen.  The
original source order may have been optimized to take advantage of the
expected values, and if we reassociate them, we change the order and
subvert that optimization.  Radar 7497329.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95333 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-04 23:32:37 +00:00
Evan Phoenix
85bb54f964 Disable external stubs for X86-32 and X86-64 
Instruction selection for X86 now can choose an instruction
sequence that will fit any address of any symbol, no matter
the pointer width. X86-64 uses a mov+call-via-reg sequence
for this.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95323 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-04 19:56:59 +00:00
Evan Cheng
6fdce65902 Fix typo Duncan noticed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95322 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-04 19:07:06 +00:00
Jakob Stoklund Olesen
f9c3b228e5 Increase inliner thresholds by 25. 
This makes the inliner about as agressive as it was before my changes to the
inliner cost calculations. These levels give the same performance and slightly
smaller code than before.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95320 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-04 18:48:20 +00:00
Jakob Stoklund Olesen
e4d2d96cc8 Fix small bug in handling instructions with more than one implicitly defined operand. 
ProcessImplicitDefs would only mark one operand per instruction with <undef>.
This fixed PR6086.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95319 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-04 18:46:28 +00:00
Chris Lattner
7db21bdb7d move the PR6214 microoptzn to this file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95299 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-04 07:32:01 +00:00
Evan Cheng
1f2fda97b1 Re-enable x86 tail call optimization. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95295 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-04 06:47:24 +00:00
Eric Christopher
e7b97471f8 Temporarily revert this since it appears to have caused a build 
failure.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95294 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-04 06:41:27 +00:00
Chris Lattner
87c06d6179 add support for the sparcv9-*-* target triple to turn on 
64-bit sparc codegen.  Patch by Nathan Keynes!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95293 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-04 06:34:01 +00:00
Chris Lattner
4633306844 From PR6228: 
"Attached patch removes the extra NUL bytes from the output and changes
test/Archive/MacOSX.toc from a binary to a text file (removes
svn:mime-type=application/octet-stream and adds svn:eol-style=native).  I can't
figure out how to get SVN to include the new contents of the file in the patch
so I'm attaching it separately."

Patch by James Abbatiello!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95292 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-04 06:19:43 +00:00
Eric Christopher
ea4b6dfd8f Rework constant expr and array handling for objectsize instcombining. 
Fix bugs where we would compute out of bounds as in bounds, and where
we couldn't know that the linker could override the size of an array.

Add a few new testcases, change existing testcase to use a private
global array instead of extern.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95283 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-04 02:55:34 +00:00
Evan Cheng
446bc10085 It's too risky to eliminate sext / zext of call results for tail call optimization even if the caller / callee attributes completely match. The callee may have been bitcast'ed (or otherwise lied about what it's doing). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95282 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-04 02:45:02 +00:00
Dan Gohman
32efba698d Change the argument to getIntegerSCEV to be an int64_t, rather 
than int. This will make it more convenient for LSR, which does
a lot of things with int64_t offsets.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95281 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-04 02:43:51 +00:00
Evan Cheng
dcea16313d Indirect tail call has to go through a call preserved register since it's after callee register pops. X86 isel lowering is using EAX / R11 and it was somehow adding that to function live out. That prevented the real function return register from being added to the function live out list and bad things happen. 
This fixes 483.xalancbmk (with tail call opt).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95280 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-04 02:40:39 +00:00
Dan Gohman
523d70ec1f Use a tab instead of space after .type, for consistency. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95272 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-04 01:42:13 +00:00
Dale Johannesen
c4b94e02af Rewrite FP constant handling in DEBUG_VALUE yet 
again, so it more or less handles long double.
Restore \n removed in latest MC frenzy.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95271 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-04 01:33:43 +00:00
Victor Hernandez
af6ce14d67 Fix (and test) function-local metadata that occurs before the instruction that it refers to; fix is to not enumerate operands of function-local metadata until after all instructions have been enumerated 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95269 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-04 01:13:08 +00:00
Eric Christopher
ec5ef6d8b0 If we're dealing with a zero-length array, don't lower to any 
particular size, we just don't know what the length is yet.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95266 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-03 23:56:07 +00:00
Chris Lattner
1e80f403e2 enhance new encoder to support prefixes + RawFrm 
instructions with no operands.  It can now handle

define void @test2() nounwind { ret void }



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95261 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-03 21:57:59 +00:00
Chris Lattner
92b1dfe5d8 set up some infrastructure, some minor cleanups. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95260 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-03 21:43:43 +00:00
Evan Cheng
8148ae8847 Speculatively disable x86 automatic tail call optimization while we track down a self-hosting issue. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95259 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-03 21:40:40 +00:00
Chris Lattner
4576247928 stub out a new X86 encoder, which can be tried with 
-enable-new-x86-encoder until its stable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95256 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-03 21:24:49 +00:00
Chris Lattner
ce79a25980 rename createX86MCCodeEmitter to more accurately reflect what it creates. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95254 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-03 21:14:33 +00:00
Kevin Enderby
12ce0de462 Added support for X86 instruction prefixes so llvm-mc can assemble them. The 
Lock prefix, Repeat string operation prefixes and the Segment override prefixes.
Also added versions of the move string and store string instructions without the
repeat prefixes to X86InstrInfo.td. And finally marked the rep versions of
move/store string records in X86InstrInfo.td as isCodeGenOnly = 1 so tblgen is
happy building the disassembler files.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95252 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-03 21:04:42 +00:00