Commit Graph

28154 Commits

Author SHA1 Message Date
Nick Lewycky b4d9f7a9b3 Simplify trunc(extend(x)) in SCEVs, just for completeness. Also fix some odd
whitespace in the same file.

llvm-svn: 69870
2009-04-23 05:15:08 +00:00
Dan Gohman 14efb90fcf Add support for printing MO_ExternalSymbol operands in
memory operand tuples. This doesn't ever come up in normal
code however.

llvm-svn: 69848
2009-04-23 00:57:37 +00:00
Evan Cheng d8174d3d09 Make sure both operands have binary instructions have the same type.
llvm-svn: 69844
2009-04-22 23:39:28 +00:00
Evan Cheng 59ca33053b A few more places where the check of use_empty is needed.
llvm-svn: 69842
2009-04-22 23:09:16 +00:00
Evan Cheng cbfe9df096 Avoid deferencing use_begin() if value does not have a use.
llvm-svn: 69836
2009-04-22 22:45:37 +00:00
Devang Patel 51c3619018 Fix cut-n-pasto.
llvm-svn: 69816
2009-04-22 18:51:05 +00:00
Dan Gohman 79af854f55 Simplify trivial cast-of-cast SCEVs.
llvm-svn: 69809
2009-04-22 16:20:48 +00:00
Dan Gohman 54fd2869a3 SCEVExpander's InsertCastOfTo knows how to move existing cast
instructions in order to avoid inserting new ones. However, if
the cast instruction is the SCEVExpander's InsertPt, this
causes subsequently emitted instructions to be inserted near
the cast, and not at the location of the original insert point.
Fix this by adjusting the insert point in such cases.
This fixes PR4009.

llvm-svn: 69808
2009-04-22 16:11:16 +00:00
Dan Gohman 9dd9a45e12 Use BasicBlock::iterator instead of Instruction* for insert points,
to better handle inserting instructions at the end of a block.

llvm-svn: 69807
2009-04-22 16:05:50 +00:00
Sanjiv Gupta 107b2818ce Make the function begin label start after ther data pointer.
The address of data frame for function can be obtained by subtracting 2 from the function begin label.

llvm-svn: 69801
2009-04-22 12:02:36 +00:00
Owen Anderson 6cbf5bb9bb Real fix for PR3549, by using caching for predecessor counts in addition to the predecessors themselves. This halves the time
to optimize the testcase, beyond what my previous patch did.

llvm-svn: 69792
2009-04-22 08:50:12 +00:00
Owen Anderson bb754826c9 Use PredIteratorCache in LCSSA, which gives a 37% overall speedup on the testcase from PR3549. More improvements to come.
llvm-svn: 69788
2009-04-22 08:09:13 +00:00
Chris Lattner 58be2d4413 use predicate instead of hand-rolled loop
llvm-svn: 69752
2009-04-21 23:37:18 +00:00
Dan Gohman c8e236278e De-pImpl-ify ScalarEvolution. The pImpl pattern doesn't provide much
practical benefit in the case of ScalarEvolution, and it's otherwise
a nuisance.

llvm-svn: 69749
2009-04-21 23:15:49 +00:00
Evan Cheng 1a99a5f501 It has finally happened. Spiller is now using live interval info.
This fixes a very subtle bug. vr defined by an implicit_def is allowed overlap with any register since it doesn't actually modify anything. However, if it's used as a two-address use, its live range can be extended and it can be spilled. The spiller must take care not to emit a reload for the vn number that's defined by the implicit_def. This is both a correctness and performance issue.

llvm-svn: 69743
2009-04-21 22:46:52 +00:00
Dan Gohman e14efcc9f4 When turning (ashr(shl(x, n), n)) into sext(trunc(x)), the width of the
type to truncate to should be the number of bits of the value that are
preserved, not the number that are clobbered with sign-extension.
This fixes regressions in ldecod.

llvm-svn: 69704
2009-04-21 20:18:36 +00:00
Chris Lattner 69223bb7f5 fix a crash on a pointless but valid zero-length memset, rdar://6808691
llvm-svn: 69680
2009-04-21 16:52:12 +00:00
Anton Korobeynikov f7d0c1a5e6 Silence warnings.
Patch by Jay Foad!

llvm-svn: 69679
2009-04-21 16:04:56 +00:00
Anton Korobeynikov 5a4b52dc0c Drop obsolete reference to __eprintf.
Patch by Jay Foad!

llvm-svn: 69678
2009-04-21 16:04:41 +00:00
Duncan Sands 7ce5cc6bd1 Get rid of what looks like a copy-and-pasted typo.
Spotted by gcc-4.5.

llvm-svn: 69673
2009-04-21 09:44:39 +00:00
Rafael Espindola 47ed1f5293 TLS_addr64 and TLS_addr32 define RDI and EAX. They don't use them.
This fixes PR4002.

llvm-svn: 69672
2009-04-21 08:22:09 +00:00
Sanjiv Gupta 3e3ef7c4d9 Handle direct aggregate type arguments.
llvm-svn: 69665
2009-04-21 05:54:51 +00:00
Dan Gohman 0ec0537403 Teach ScalarEvolution how to recognize zext-inreg and sext-inreg,
as they appear in LLVM IR. This isn't particularly interesting
on its own; this is just setting up some infrastructure.

llvm-svn: 69655
2009-04-21 02:26:00 +00:00
Dan Gohman c4938497b3 This FIXME is fixed, now that SCEV understands pointers.
llvm-svn: 69651
2009-04-21 01:41:18 +00:00
Dan Gohman 4860db61be Factor out a common base class from SCEVTruncateExpr, SCEVZeroExtendExpr,
and SCEVSignExtendExpr.

llvm-svn: 69649
2009-04-21 01:25:57 +00:00
Dan Gohman 49e062fcc1 Usage getAnalysisToUpdate for TargetData, per PR760.
llvm-svn: 69645
2009-04-21 01:11:19 +00:00
Dan Gohman b397e1a7a2 Introduce encapsulation for ScalarEvolution's TargetData object, and refactor
the code to minimize dependencies on TargetData.

llvm-svn: 69644
2009-04-21 01:07:12 +00:00
Dan Gohman 413e91f440 Move some assertion checks so they can do more complete checking.
llvm-svn: 69643
2009-04-21 00:55:22 +00:00
Dan Gohman e20f824565 Convert ScalarEvolution to use raw_ostream instead of OStream.
llvm-svn: 69640
2009-04-21 00:47:46 +00:00
Devang Patel 7f413cb05f Fix Visual Studio 2008 build failure.
Patch by Marius Wachtler

llvm-svn: 69637
2009-04-21 00:08:56 +00:00
Dan Gohman 1addf64735 Make X86's copyRegToReg able to handle copies to and from subclasses.
This makes the extra copyRegToReg calls in ScheduleDAGSDNodesEmit.cpp
unnecessary. Derived from a patch by Jakob Stoklund Olesen.

llvm-svn: 69635
2009-04-20 22:54:34 +00:00
Dan Gohman e014b69919 Simplify this code. getConstant knows how to make
broadcasted vector constants.

llvm-svn: 69634
2009-04-20 22:51:43 +00:00
Dale Johannesen 1238220473 Adjust loop size estimate for full unrolling;
GEP's don't usually become instructions.

llvm-svn: 69631
2009-04-20 22:19:33 +00:00
Daniel Dunbar 3222b9be04 Make Unix.h:MakeErrMsg separate the prefix and errno string, so we get:
clang: error: unable to make temporary file: /etc/cc: can't make
  unique filename: Permission denied

instead of 

  clang: error: unable to make temporary file: /etc/cc: can't make
  unique filenamePermission denied

for example.

Also, audited the uses of MakeErrMsg to make the prefix strings
consistent (not end with newline/punctuation/space/": ").

llvm-svn: 69626
2009-04-20 20:50:13 +00:00
Daniel Dunbar 2c441c6afe Remove unused variable.
llvm-svn: 69624
2009-04-20 20:34:38 +00:00
Bob Wilson f8b85477ae Move duplicated AddLiveIn function from X86 and ARM backends to be a method
in the MachineFunction class, renaming it to addLiveIn for consistency with
the same method in MachineBasicBlock.  Thanks for Anton for suggesting this.

llvm-svn: 69615
2009-04-20 18:36:57 +00:00
Devang Patel 958d5eb032 Match C backend only if it explicitly requested.
llvm-svn: 69613
2009-04-20 18:07:22 +00:00
Bob Wilson da188ebbbd Revise my previous change 68996 as suggested by Duncan.
llvm-svn: 69607
2009-04-20 17:27:09 +00:00
Evan Cheng 5dd2e29b67 - Remove an arbitrary spill weight tweak that should not have been there.
- Find more reloads from SS.

llvm-svn: 69606
2009-04-20 17:23:48 +00:00
Sanjiv Gupta 0fcc019d36 Emit the auto variables of a function into a different section than parameters.
llvm-svn: 69605
2009-04-20 16:59:35 +00:00
Dan Gohman f7db87f2dc It's not necessary for PrintModulePass to flush the output streams
now that errs() is properly non-buffered.

llvm-svn: 69602
2009-04-20 16:26:25 +00:00
Dan Gohman 6c7a485c19 Don't discard an AssemblyAnnotationWriter when writing GlobalValues,
which include Functions, where it can be quite useful to use an
AssemblyAnnotationWriter.

llvm-svn: 69598
2009-04-20 16:10:33 +00:00
Dan Gohman 5fe6b530a5 Implement operator<<(raw_ostream &OS, const Type &T).
llvm-svn: 69596
2009-04-20 15:55:38 +00:00
Evan Cheng d67efaa847 Added a linearscan register allocation optimization. When the register allocator spill an interval with multiple uses in the same basic block, it creates a different virtual register for each of the reloads. e.g.
%reg1498<def> = MOV32rm %reg1024, 1, %reg0, 12, %reg0, Mem:LD(4,4) [sunkaddr39 + 0]
        %reg1506<def> = MOV32rm %reg1024, 1, %reg0, 8, %reg0, Mem:LD(4,4) [sunkaddr42 + 0]
        %reg1486<def> = MOV32rr %reg1506
        %reg1486<def> = XOR32rr %reg1486, %reg1498, %EFLAGS<imp-def,dead>
        %reg1510<def> = MOV32rm %reg1024, 1, %reg0, 4, %reg0, Mem:LD(4,4) [sunkaddr45 + 0]

=>

        %reg1498<def> = MOV32rm %reg2036, 1, %reg0, 12, %reg0, Mem:LD(4,4) [sunkaddr39 + 0]
        %reg1506<def> = MOV32rm %reg2037, 1, %reg0, 8, %reg0, Mem:LD(4,4) [sunkaddr42 + 0]
        %reg1486<def> = MOV32rr %reg1506
        %reg1486<def> = XOR32rr %reg1486, %reg1498, %EFLAGS<imp-def,dead>
        %reg1510<def> = MOV32rm %reg2038, 1, %reg0, 4, %reg0, Mem:LD(4,4) [sunkaddr45 + 0]

From linearscan's point of view, each of reg2036, 2037, and 2038 are separate registers, each is "killed" after a single use. The reloaded register is available and it's often clobbered right away. e.g. In thise case reg1498 is allocated EAX while reg2036 is allocated RAX. This means we end up with multiple reloads from the same stack slot in the same basic block.

Now linearscan recognize there are other reloads from same SS in the same BB. So it'll "downgrade" RAX (and its aliases) after reg2036 is allocated until the next reload (reg2037) is done. This greatly increase the likihood reloads from SS are reused.

This speeds up sha1 from OpenSSL by 5.8%. It is also an across the board win for SPEC2000 and 2006.

llvm-svn: 69585
2009-04-20 08:01:12 +00:00
Douglas Gregor b231e5791e Make all raw_ostreams support the tell() function.
llvm-svn: 69583
2009-04-20 07:34:17 +00:00
Sanjiv Gupta 428d490332 Before trying to introduce/eliminate cast/ext/trunc to make indices type as
pointer type, make sure that the pointer size is a valid sequential index type.

llvm-svn: 69574
2009-04-20 06:05:54 +00:00
Nick Lewycky 0575dbb692 Use an AssertingVH to detect the case where the Function was deleted but
freeMachineCodeForFunction was never called.

llvm-svn: 69531
2009-04-19 18:32:03 +00:00
Duncan Sands f2e7133d34 Now that BUILD_VECTOR operands are allowed to be
bigger than the vector element type, turn checking
of the operand type back on again, appropriately
adjusted.

llvm-svn: 69516
2009-04-19 06:40:30 +00:00
Chris Lattner 7b01e66443 Fix PR3898, which manifests as failures on are an Xcore,
patch by Jakob Stoklund Olesen!

llvm-svn: 69472
2009-04-18 20:48:07 +00:00
Duncan Sands e4ff21ba4b Don't try to make BUILD_VECTOR operands have the same
type as the vector element type: allow them to be of
a wider integer type than the element type all the way
through the system, and not just as far as LegalizeDAG.
This should be safe because it used to be this way
(the old type legalizer would produce such nodes), so
backends should be able to handle it.  In fact only
targets which have legal vector types with an illegal
promoted element type will ever see this (eg: <4 x i16>
on ppc).  This fixes a regression with the new type
legalizer (vec_splat.ll).  Also, treat SCALAR_TO_VECTOR
the same as BUILD_VECTOR.  After all, it is just a
special case of BUILD_VECTOR.

llvm-svn: 69467
2009-04-18 20:16:54 +00:00
Dan Gohman 31efa3098f Add a ScalarEvolution::getCouldNotCompute() function, and use it
instead of allocating and leaking new SCEVCouldNotCompute objects.

llvm-svn: 69452
2009-04-18 17:58:19 +00:00
Dan Gohman 927e90c716 More const qualifiers.
llvm-svn: 69451
2009-04-18 17:57:20 +00:00
Dan Gohman 056857aa21 Use more const qualifiers with SCEV interfaces.
llvm-svn: 69450
2009-04-18 17:56:28 +00:00
Evan Cheng b685be0c1e Add a new LiveInterval::overlaps(). It checks if the live interval overlaps a range specified by [Start, End).
llvm-svn: 69434
2009-04-18 08:52:15 +00:00
Mon P Wang 6c8bcf9da1 Fixed a few 64 bit cases in X86InstrInfo::commuteInstruction
llvm-svn: 69417
2009-04-18 05:16:01 +00:00
Dale Johannesen ad968ee286 Inline asm's were still introducing bogus dependencies;
my earlier patch to this code only fixed half of it.

llvm-svn: 69408
2009-04-18 00:09:40 +00:00
Jim Grosbach 8d62763779 remove trailing whitespace
llvm-svn: 69402
2009-04-17 23:30:55 +00:00
Bill Wendling 06684350c4 Recommit r69335 and r69336. These were not causing problems.
llvm-svn: 69394
2009-04-17 22:40:38 +00:00
Bob Wilson b0b10f8bf6 Move the AddLiveIn function definition closer to its uses.
llvm-svn: 69382
2009-04-17 20:42:34 +00:00
Bob Wilson deeaf70dad Rearrange code to reduce indentation.
llvm-svn: 69381
2009-04-17 20:40:45 +00:00
Bob Wilson ea09d4aca8 Clean up formatting, remove trailing whitespace, fix comment typos and
punctuation.  No functional changes.

llvm-svn: 69378
2009-04-17 20:35:10 +00:00
Bob Wilson a4c2290e5f Use CallConvLower.h and TableGen descriptions of the calling conventions
for ARM.  Patch by Sandeep Patel.

llvm-svn: 69371
2009-04-17 19:07:39 +00:00
David Greene 22fa407ed7 Use a safer iterator interface and get rid of std C++ library misuse.
This fixes a --enable-expensive-checks problem.

llvm-svn: 69353
2009-04-17 14:56:18 +00:00
Rafael Espindola 355fe12c82 For general dynamic TLS access we must use
leaq	foo@TLSGD(%rip), %rdi

as part of the instruction sequence. Using a register other than %rdi and then
copying it to %rdi is not valid.

llvm-svn: 69350
2009-04-17 14:35:58 +00:00
Bill Wendling 30527b1114 Revert r69335 and r69336. They were causing build failures.
llvm-svn: 69347
2009-04-17 04:19:22 +00:00
Dan Gohman d2d6fd806c Don't create ConstantInts with pointer type. This fixes a
regression in 403.gcc in PIC_CODEGEN=1 and DISABLE_LTO=1
mode.

llvm-svn: 69344
2009-04-17 02:02:52 +00:00
Evan Cheng b96a1082a9 Teach spiller to unfold instructions which modref spill slot when a scratch
register is available and when it's profitable.

e.g.
     xorq  %r12<kill>, %r13
     addq  %rax, -184(%rbp)
     addq  %r13, -184(%rbp)
==>
     xorq  %r12<kill>, %r13
     movq  -184(%rbp), %r12
     addq  %rax, %r12
     addq  %r13, %r12
     movq  %r12, -184(%rbp)

Two more instructions, but fewer memory accesses. It can also open up
opportunities for more optimizations.

llvm-svn: 69341
2009-04-17 01:29:40 +00:00
Dan Gohman 09dbb0b5e0 MOV8rr_NOREX is a "Move" instruction. This doesn't currently
matter, because this instruction isn't generated until after
things that care.

llvm-svn: 69336
2009-04-17 00:45:17 +00:00
Dan Gohman 74835ce1cb Don't use MOV8rr_NOREX on x86-32. It doesn't actually hurt anything at
present, but it's inconsistent.

llvm-svn: 69335
2009-04-17 00:43:09 +00:00
Chris Lattner a8919d0a35 Fix some failures in targets on available_externally functions,
this fixes a crash on CodeGen/Generic/externally_available.ll
on ppc hosts.  Thanks to Nicholas L for pointing this out.

llvm-svn: 69333
2009-04-17 00:26:12 +00:00
Dan Gohman fec1d086e0 Use TargetData::getTypeSizeInBits instead of getPrimitiveSizeInBits()
to get the correct answer for pointer types.

llvm-svn: 69321
2009-04-16 22:35:57 +00:00
Chris Lattner 11ceb38df0 make sure to unlock keymgr if the JIT is created and destroyed, all
locks must be matched with unlocks.  Also, use calloc to allocate the
block so that it is properly zero'd.  Thanks to Nick Kledzik for
tracking this down.

llvm-svn: 69314
2009-04-16 21:47:59 +00:00
Eli Friedman 929207fd1d Fix for PR3944: make mem2reg O(N) instead of O(N^2) in the number of
incoming edges for a block with many predecessors.

llvm-svn: 69312
2009-04-16 21:40:28 +00:00
Dan Gohman 72dc8452a3 Handle a pointer type correctly in SCEVExpander::visitAddRecExpr.
llvm-svn: 69310
2009-04-16 21:34:54 +00:00
Dan Gohman eefba6bbe0 In the list-burr's pseudo two-addr dependency heuristics, don't
add dependencies on nodes with exactly one successor which is a
COPY_TO_REGCLASS node. In the case that the copy is coalesced
away, the dependence should be on the user of the copy, rather
than the copy itself.

llvm-svn: 69309
2009-04-16 20:59:02 +00:00
Dan Gohman 3027bb6953 Handle SUBREG_TO_REG instructions with the same heuristics
as INSERT_SUBREG instructions in the list-burr scheduler.

llvm-svn: 69308
2009-04-16 20:57:10 +00:00
Dan Gohman c1c2ba7a72 Fix a bug with inttoptr/ptrtoint casts where the pointer has a different
size from the integer, requiring zero extension or truncation. Don't
create ZExtInsts with pointer types. This fixes a regression in
consumer-jpeg.

llvm-svn: 69307
2009-04-16 19:25:55 +00:00
Devang Patel dab01f3fd6 Do not treat beginning of inlined scope as beginning of normal function scope if the location info is missing.
Insetad of doing ...
if (inlined_subroutine && known_location)
  DW_TAG_inline_subroutine
else
  DW_TAG_subprogram

do

if (inlined_subroutine) {
 if (known_location)
   DW_TAG_inline_subroutine
} else {
 DW_TAG_subprogram
}

llvm-svn: 69300
2009-04-16 17:55:30 +00:00
Dan Gohman 8b6ebb1112 Minor code simplifications. Don't attempt LSR on theoretical
targets with pointers larger than 64 bits, due to the code not
yet being APInt clean.

llvm-svn: 69296
2009-04-16 16:49:48 +00:00
Dan Gohman e2ead2c328 LSR is no longer a GEP optimizer. It is now an IV expression
optimizer, which just happen to frequently involve optimizing GEPs.

llvm-svn: 69295
2009-04-16 16:46:01 +00:00
Dan Gohman e98ead45e2 Fix SCEVExpander::visitSMaxExpr and SCEVExpander::visitUMaxExpr to
not create ICmpInsts with operands of different types. This fixes
a regression in Applications/d/make_dparser.

llvm-svn: 69294
2009-04-16 16:15:25 +00:00
Dan Gohman 66e038a3e3 Teach SCEVExpander::InsertCastOfTo to avoid creating inttoptr-of-ptrtoint
and ptrtoint-of-inttoptr expressions. This fixes a regression in 300.twolf.

llvm-svn: 69293
2009-04-16 15:52:57 +00:00
Dan Gohman a8be04b2db Use ConstantExpr::getIntToPtr instead of SCEVExpander::InsertCastOfTo,
since the operand is always a constant.

llvm-svn: 69291
2009-04-16 15:48:38 +00:00
Dan Gohman 71bccd3e0e Use a SCEV expression cast instead of immediately inserting a
new instruction with SCEVExpander::InsertCastOfTo.

llvm-svn: 69290
2009-04-16 15:47:35 +00:00
Devang Patel 9ac4390bf4 Record line number at the beginning of a func.start.
This line was accidently lost yesterday.

llvm-svn: 69286
2009-04-16 15:07:09 +00:00
Rafael Espindola 5e42177a0f fix PR3995. A scale must be 1, 2, 4 or 8.
llvm-svn: 69284
2009-04-16 12:34:53 +00:00
Dan Gohman 0a40ad93a9 Expand GEPs in ScalarEvolution expressions. SCEV expressions can now
have pointer types, though in contrast to C pointer types, SCEV
addition is never implicitly scaled. This not only eliminates the
need for special code like IndVars' EliminatePointerRecurrence
and LSR's own GEP expansion code, it also does a better job because
it lets the normal optimizations handle pointer expressions just
like integer expressions.

Also, since LLVM IR GEPs can't directly index into multi-dimensional
VLAs, moving the GEP analysis out of client code and into the SCEV
framework makes it easier for clients to handle multi-dimensional
VLAs the same way as other arrays.

Some existing regression tests show improved optimization.
test/CodeGen/ARM/2007-03-13-InstrSched.ll in particular improved to
the point where if-conversion started kicking in; I turned it off
for this test to preserve the intent of the test.

llvm-svn: 69258
2009-04-16 03:18:22 +00:00
Devang Patel 653dee0884 In -fast mode do what FastISel does.
This code could use some refactoring help!

llvm-svn: 69254
2009-04-16 02:33:41 +00:00
Devang Patel 46b04e4d06 If FastISel is run and it has known DebugLoc then use it.
llvm-svn: 69253
2009-04-16 01:33:10 +00:00
Devang Patel 43fc7e481b If location where the function was inlined is not know then do not emit debug info describing inlinied region.
llvm-svn: 69252
2009-04-16 01:31:54 +00:00
Dale Johannesen a71daa83c6 Eliminate zext over (iv | const) or (signed iv),
and sext over (iv | const), if a longer iv is
available.  Allow expressions to have more than
one zext/sext parent.  All from OpenSSL.

llvm-svn: 69241
2009-04-15 23:31:51 +00:00
Devang Patel 31043aa200 s/RootDbgScope/FunctionDbgScope/g
llvm-svn: 69216
2009-04-15 20:41:31 +00:00
Dale Johannesen 82230b5b17 Eliminate zext over (iv & const) or ((iv+const)&const)
if a longer iv is available.  These subscript forms are
not common; they're a bottleneck in OpenSSL.

llvm-svn: 69215
2009-04-15 20:41:02 +00:00
Chris Lattner baf9535284 teach EscapeString and UnescapeString to handle ".
llvm-svn: 69211
2009-04-15 20:12:52 +00:00
Devang Patel 2738d7312a Add DISubprogram is not null check.
This fixes test/CodeGen//2009-01-21-invalid-debug-info.m test case.

llvm-svn: 69210
2009-04-15 20:11:08 +00:00
Dan Gohman 8aa28b9c34 Generalize one of the SelectionDAG::ReplaceAllUsesWith overloads
to support replacing a node with another that has a superset of
the result types. Use this instead of calling
ReplaceAllUsesOfValueWith for each value.

llvm-svn: 69209
2009-04-15 20:06:30 +00:00
Dan Gohman de7b3e74be Fix 80-column violations.
llvm-svn: 69204
2009-04-15 19:48:57 +00:00
Dan Gohman 6711216e84 Add a folding table entry for MOV8rr_NOREX.
llvm-svn: 69203
2009-04-15 19:48:28 +00:00
Devang Patel 70307db0d5 Check isInlinedSubroutine() before creating DW_TAG_inlined_subroutine.
llvm-svn: 69202
2009-04-15 19:42:57 +00:00
Dan Gohman 37608532c4 Fix MachineInstr::getNumExplicitOperands to count
variadic operands correctly. Patch by Jakob Stoklund Olesen!

llvm-svn: 69190
2009-04-15 17:59:11 +00:00
Nick Lewycky 4a7bcf6410 Limit the number of times we're willing to chase pointers. Removes an O(n^2)
problem from instcombine.

llvm-svn: 69151
2009-04-15 06:23:41 +00:00
Dan Gohman 6f873b446a Fix X86MachineFunctionInfo's doxygen comment.
llvm-svn: 69127
2009-04-15 01:20:18 +00:00
Dan Gohman 210448c233 Move MachineRegisterInfo::setRegClass out of line.
llvm-svn: 69126
2009-04-15 01:19:35 +00:00
Dan Gohman 505065cdd0 Move MachineJumpTableInfo::ReplaceMBBInJumpTables out of line.
llvm-svn: 69125
2009-04-15 01:18:49 +00:00
Dan Gohman 89892b05c7 Give RemoveRegOperandFromRegInfo a comment and move the
code out of line.

llvm-svn: 69124
2009-04-15 01:17:37 +00:00
Dale Johannesen 7ffb7d5728 Enhance induction variable code to remove the
sext around sext(shorter IV + constant), using a
longer IV instead, when it can figure out the
add can't overflow.  This comes up a lot in
subscripting; mainly affects 64 bit.

llvm-svn: 69123
2009-04-15 01:10:12 +00:00
Evan Cheng ffb83a155e Avoid making the transformation enabled by my last patch if the new destinations have phi nodes.
llvm-svn: 69121
2009-04-15 00:43:54 +00:00
Devang Patel 046bf624b9 While inlining, clone llvm.dbg.func.start intrinsic and adjust
llvm.dbg.region.end instrinsic. This nested llvm.dbg.func.start/llvm.dbg.region.end pair now enables DW_TAG_inlined_subroutine support in code generator.

llvm-svn: 69118
2009-04-15 00:17:06 +00:00
Devang Patel 32d17a1a29 Construct and emit DW_TAG_inlined_subroutine DIEs for inlined subroutine scopes (only in FastISel mode).
llvm-svn: 69116
2009-04-15 00:10:26 +00:00
Dan Gohman dd07f638f5 Do for GR16_NOREX what r69049 did for GR8_NOREX, to avoid trouble with
the local register allocator.

llvm-svn: 69115
2009-04-15 00:10:16 +00:00
Devang Patel 1be3b53d3c Add a method to check that the subprogram holds debug info for the given Function or not.
llvm-svn: 69113
2009-04-15 00:06:07 +00:00
Dan Gohman 7913ea5e4a Add a new MOV8rr_NOREX, and make X86's copyRegToReg use it when
either the source or destination is a physical h register.

This fixes sqlite3 with the post-RA scheduler enabled.

llvm-svn: 69111
2009-04-15 00:04:23 +00:00
Dan Gohman 821e13a8f4 GR8_NOREX can contain the H registers, since they don't require
REX prefixes.

llvm-svn: 69108
2009-04-15 00:00:48 +00:00
Evan Cheng 5ebf2acd84 Optimize conditional branch on i1 phis with non-constant inputs.
This turns:

eq:
        %3 = icmp eq i32 %1, %2
        br label %join

ne:
        %4 = icmp ne i32 %1, %2
        br label %join

join:
        %5 = phi i1 [%3, %eq], [%4, %ne]
        br i1 %5, label %yes, label %no

=>

eq:
        %3 = icmp eq i32 %1, %2
        br i1 %3, label %yes, label %no

ne:
        %4 = icmp ne i32 %1, %2
        br i1 %4, label %yes, label %no

llvm-svn: 69102
2009-04-14 23:40:03 +00:00
Dan Gohman 62f4498646 For the h-register addressing-mode trick, use the correct value for
any non-address uses of the address value. This fixes 186.crafty.

llvm-svn: 69094
2009-04-14 22:45:05 +00:00
Evan Cheng 3f1a3008f4 Mac OS X 10.6 and above do not use key manager to register EH frames.
llvm-svn: 69090
2009-04-14 22:31:59 +00:00
Dan Gohman e5cd1fcdb9 When the result of an EXTRACT_SUBREG, INSERT_SUBREG, or SUBREG_TO_REG
operator is used by a CopyToReg to export the value to a different
block, don't reuse the CopyToReg's register for the subreg operation
result if the register isn't precisely the right class for the
subreg operation.

Also, rename the h-registers.ll test, now that there are more
than one.

llvm-svn: 69087
2009-04-14 22:17:14 +00:00
Mikhail Glushenkov 60cde5ba7c Call CreateProcess with bInheritHandles = TRUE.
Makes llvmc show error messages printed by child processes when run from the
Cygwin/MSYS shell. Since ExecuteAndWait does not return until the child program
has finished execution, this change should be harmless.

llvm-svn: 69082
2009-04-14 21:31:36 +00:00
Mikhail Glushenkov 3a62efb732 Delete trailing whitespace.
llvm-svn: 69081
2009-04-14 21:31:14 +00:00
Evan Cheng dfbbf5c043 Some of GR8_NOREX registers are only available in 64-bit mode.
llvm-svn: 69049
2009-04-14 16:57:43 +00:00
Sanjiv Gupta 92bb846e2b Handle aggregate type arguments to direct and indirect calls.
llvm-svn: 69022
2009-04-14 02:49:52 +00:00
Owen Anderson a1902318e3 LoopIndexSplit needs to inform the loop pass manager of the instructions it is
deleting, not just the basic block.

llvm-svn: 69011
2009-04-14 01:04:19 +00:00
Dale Johannesen 83593f4167 Do not force asm's to be chained if they don't touch
memory and aren't volatile.  This was interfering with
good scheduling.

llvm-svn: 69008
2009-04-14 00:56:56 +00:00
Evan Cheng 9787183b9b Fix PR3934 part 2. findOnlyInterestingUse() was not setting IsCopy and IsDstPhys which are returned by value and used by callee. This happened to work on the earlier test cases because of a logic error in the caller side.
llvm-svn: 69006
2009-04-14 00:32:25 +00:00
Daniel Dunbar 097f630dad Make these errors more noticable in build logs.
llvm-svn: 68998
2009-04-13 22:26:09 +00:00
Bob Wilson 59dbbb2bb4 Change SelectionDAG type legalization to allow BUILD_VECTOR operands to be
promoted to legal types without changing the type of the vector.  This is
following a suggestion from Duncan
(http://lists.cs.uiuc.edu/pipermail/llvmdev/2009-February/019923.html).
The transformation that used to be done during type legalization is now
postponed to DAG legalization.  This allows the BUILD_VECTORs to be optimized
and potentially handled specially by target-specific code.

It turns out that this is also consistent with an optimization done by the
DAG combiner: a BUILD_VECTOR and INSERT_VECTOR_ELT may be combined by
replacing one of the BUILD_VECTOR operands with the newly inserted element;
but INSERT_VECTOR_ELT allows its scalar operand to be larger than the
element type, with any extra high bits being implicitly truncated.  The
result is a BUILD_VECTOR where one of the operands has a type larger the
the vector element type.

Any code that operates on BUILD_VECTORs may now need to be aware of the
potential type discrepancy between the vector element type and the
BUILD_VECTOR operands.  This patch updates all of the places that I could
find to handle that case.

llvm-svn: 68996
2009-04-13 22:05:19 +00:00
Dan Gohman 6c1426308c Rename COPY_TO_SUBCLASS to COPY_TO_REGCLASS, and generalize
it accordingly. Thanks to Jakob Stoklund Olesen for pointing
out how this might be useful.

llvm-svn: 68986
2009-04-13 21:06:25 +00:00
Bob Wilson f6c2195383 Refactor some code in SelectionDAGLegalize::ExpandBUILD_VECTOR.
llvm-svn: 68981
2009-04-13 20:20:30 +00:00
Evan Cheng f0843803a0 PR3934: Fix a bogus two-address pass assertion.
llvm-svn: 68979
2009-04-13 20:04:24 +00:00
Devang Patel 0431504fb2 Right now, Debugging information to encode scopes (DW_TAG_lexical_block) relies on DBG_LABEL. Unfortunately this intefers with the quality of optimized code.
This patch updates dwarf writer to encode scoping information in DWARF only in FastISel mode.

llvm-svn: 68973
2009-04-13 18:13:16 +00:00
Devang Patel 80be3511ed Reapply 68847.
Now debug_inlined section is covered by TAI->doesDwarfUsesInlineInfoSection(), which is false by default.

llvm-svn: 68964
2009-04-13 17:02:03 +00:00
Dan Gohman 57d6bd36b2 Implement x86 h-register extract support.
- Add patterns for h-register extract, which avoids a shift and mask,
   and in some cases a temporary register.
 - Add address-mode matching for turning (X>>(8-n))&(255<<n), where
   n is a valid address-mode scale value, into an h-register extract
   and a scaled-offset address.
 - Replace X86's MOV32to32_ and related instructions with the new
   target-independent COPY_TO_SUBREG instruction.

On x86-64 there are complicated constraints on h registers, and
CodeGen doesn't currently provide a high-level way to express all of them,
so they are handled with a bunch of special code. This code currently only
supports extracts where the result is used by a zero-extend or a store,
though these are fairly common.

These transformations are not always beneficial; since there are only
4 h registers, they sometimes require extra move instructions, and
this sometimes increases register pressure because it can force out
values that would otherwise be in one of those registers. However,
this appears to be relatively uncommon.

llvm-svn: 68962
2009-04-13 16:09:41 +00:00
Dan Gohman 60a446ab02 Add a new TargetInstrInfo MachineInstr opcode, COPY_TO_SUBCLASS.
This will be used to replace things like X86's MOV32to32_.

Enhance ScheduleDAGSDNodesEmit to be more flexible and robust
in the presense of subregister superclasses and subclasses. It
can now cope with the definition of a virtual register being in
a subclass of a use.

Re-introduce the code for recording register superreg classes and
subreg classes. This is needed because when subreg extracts and
inserts get coalesced away, the virtual registers are left in
the correct subclass.

llvm-svn: 68961
2009-04-13 15:38:05 +00:00
Dan Gohman f20462c217 Remove x86's special-case handling for ISD::TRUNCATE and
ISD::SIGN_EXTEND_INREG. Tablegen-generated code can handle
these cases, and the scheduling issues observed earlier
appear to be resolved now.

llvm-svn: 68959
2009-04-13 15:29:31 +00:00
Dan Gohman e9432dcc0d Fix copy+pastos in comments.
llvm-svn: 68958
2009-04-13 15:28:29 +00:00
Dan Gohman 1d50407932 Don't abort on an aliasing physical register that does not have
a live interval. This is needed for some upcoming subreg changes.

llvm-svn: 68956
2009-04-13 15:22:29 +00:00
Dan Gohman 4d62ff1483 When assigning a physical register to a MachineOperand, set
the subreg field to 0, since the subreg field is only used
for virtual register subregs. This doesn't change
current functionality; it just eliminates bogus noise from
debug output.

llvm-svn: 68955
2009-04-13 15:21:32 +00:00
Dan Gohman 9e3eb7bcd9 List the l registers before h registers, for consistency.
llvm-svn: 68954
2009-04-13 15:18:42 +00:00
Dan Gohman 85abd983f2 Add an assertion to verify that a copy was actually emitted.
llvm-svn: 68953
2009-04-13 15:16:56 +00:00
Dan Gohman 092b8b6fdb Use X86::SUBREG_8BIT instead of hard-coding the equivalent constant.
llvm-svn: 68951
2009-04-13 15:14:03 +00:00
Dan Gohman c5c2fc45ae Add a comment about MOVSX64rr8.
llvm-svn: 68950
2009-04-13 15:13:28 +00:00
Dan Gohman 39aa13a401 Fix another hard-coded constant to use X86AddrNumOperands.
This unbreaks the JIT on x86-64.

llvm-svn: 68948
2009-04-13 15:04:25 +00:00
Rafael Espindola 6d6c6043ea X86-64 TLS support for local exec and initial exec.
llvm-svn: 68947
2009-04-13 13:02:49 +00:00
Sanjiv Gupta 0368bc4703 While passing arg of types larger than char only one byte at lower end was getting passed. We couldn't catch this as we did not have tests that were passing an int value larger than 256.
llvm-svn: 68946
2009-04-13 09:38:38 +00:00
Nick Lewycky 8019af6b2c Fix warning in .ll parser, detect and reject available_externally on function
declarations.

llvm-svn: 68944
2009-04-13 07:02:02 +00:00
Chris Lattner 184f1be4a8 Add a new "available_externally" linkage type. This is intended
to support C99 inline, GNU extern inline, etc.  Related bugzilla's
include PR3517, PR3100, & PR2933.  Nothing uses this yet, but it
appears to work.

llvm-svn: 68940
2009-04-13 05:44:34 +00:00
Chris Lattner 836e77d161 eliminate unneeded parens.
llvm-svn: 68939
2009-04-13 05:38:23 +00:00
Nick Lewycky e54da991d1 Link against libffi if available, fall back to "no external calls from
interpreter mode" when it's not.

llvm-svn: 68937
2009-04-13 04:26:06 +00:00
Chris Lattner ce8b7d2e24 fix PR3965:SIGINT handler not restored after calling ParseAST(),
patch by Alexei Svitkine!

llvm-svn: 68929
2009-04-12 23:33:13 +00:00
Rafael Espindola 7186f20a1b In X86DAGToDAGISel::MatchWrapper, if base or index are set, avoid matching
only if symbolic addresses are RIP relatives.

llvm-svn: 68924
2009-04-12 23:00:38 +00:00
Rafael Espindola 6688b0a5da refactor some code into X86DAGToDAGISel::MatchWrapper
llvm-svn: 68915
2009-04-12 21:55:03 +00:00
Chris Lattner 6cd82fb430 "There was a typo in my previous patch which leads to miscompilation of
strncat :(

strncat(foo, "bar", 99)
would be optimized to
memcpy(foo+strlen(foo), "bar", 100, 1)
instead of
memcpy(foo+strlen(foo), "bar", 4, 1)"

Patch by Benjamin Kramer!

llvm-svn: 68905
2009-04-12 18:22:33 +00:00
Chris Lattner ce6bcf0847 fix a cross-block fastisel crash handling overflow intrinsics.
See comment for details.  This fixes rdar://6772169

llvm-svn: 68890
2009-04-12 07:51:14 +00:00
Chris Lattner a101f6f8d3 make UpdateValueMap handle the possiblity that we could be
copying into the right register, avoiding a copy.

llvm-svn: 68889
2009-04-12 07:46:30 +00:00
Chris Lattner ada5d6c37e optimize FastISel::UpdateValueMap to avoid duplicate map lookups,
and make it return the assigned register.

llvm-svn: 68888
2009-04-12 07:45:01 +00:00
Chris Lattner 99a8cb627d simplify code by using IntrinsicInst.
llvm-svn: 68887
2009-04-12 07:36:01 +00:00
Chris Lattner 24ac95abc1 Add new TargetInstrDesc::hasImplicitUseOfPhysReg and
hasImplicitDefOfPhysReg methods.  Use them to remove a 
look in X86 fast isel.

llvm-svn: 68886
2009-04-12 07:26:51 +00:00
Chris Lattner 91b6af24ac add some optimizations for strncpy/strncat and factor some
code.  Patch by Benjamin Kramer!

llvm-svn: 68885
2009-04-12 05:06:39 +00:00
Dan Gohman 825236b116 Revert r68847. It breaks the build on non-Darwin targets, with this message
from the assembler:

Error: unknown pseudo-op: `.debug_inlined'
llvm-svn: 68863
2009-04-11 15:57:04 +00:00
Devang Patel 790e60999e Keep track of inlined functions and their locations. This information is collected when nested llvm.dbg.func.start intrinsics are seen. (Right now, inliner removes nested llvm.dbg.func.start intrinisics during inlining.)
Create debug_inlined dwarf section using these information. This info is used by gdb, at least on Darwin, to enable better experience debugging inlined functions. See DwarfWriter.cpp for more information on structure of debug_inlined section.

llvm-svn: 68847
2009-04-11 00:16:47 +00:00
Devang Patel 61b35cd15e DebugLabelFolder ruthlessly deletes redundant labels. However, sometimes the redundant labels is referenced by debug info somewhere else. This patch provies a way so that dwarf writer can mark labels as used.
llvm-svn: 68813
2009-04-10 18:58:59 +00:00
Bob Wilson f074ca7454 Clean up a bunch of whitespace issues and fix a comment typo.
No functional changes.

llvm-svn: 68808
2009-04-10 18:48:47 +00:00
Chris Lattner 30c3de6461 fix two problems with machine sinking:
1. Sinking would crash when the first instruction of a block was
   sunk due to iterator problems.
2. Instructions could be sunk to their current block, causing an
   infinite loop.

This fixes PR3968

llvm-svn: 68787
2009-04-10 16:38:36 +00:00
Dan Gohman e517ae4211 Now that register classes have names, include the name in debug output.
llvm-svn: 68786
2009-04-10 15:59:38 +00:00
Sanjiv Gupta 638f400a3c Added code to handle spilling and reloading of FSRs.
llvm-svn: 68783
2009-04-10 15:10:14 +00:00
Rafael Espindola bb834f0929 Don't fold a load if the other operand is a TLS address.
With this we generate

movl    %gs:0, %eax
leal    i@NTPOFF(%eax), %eax

instead of

movl    $i@NTPOFF, %eax
addl    %gs:0, %eax

llvm-svn: 68778
2009-04-10 10:09:34 +00:00
Chris Lattner bc8848f76f Add a new Type::getPointerTo method, which is shorthand for
llvm::PointerType::get().  Patch by Anders Johnsen!

llvm-svn: 68772
2009-04-10 06:42:02 +00:00
Chris Lattner 428f71623b a few fixes to "addrspace(256) is reference offset of GS segment register".
It turns out that there are still several problems with this, will file a bugzilla.

llvm-svn: 68749
2009-04-10 00:16:23 +00:00
Bill Wendling 992f846dc7 Pass in the std::string parameter instead of returning it by value.
llvm-svn: 68747
2009-04-10 00:12:49 +00:00
Bill Wendling fe56c25065 Constify getter methods.
llvm-svn: 68745
2009-04-10 00:00:25 +00:00
Dan Gohman de912e2475 Remove the obsolete SelectionDAG::getNodeValueTypes and simplify
code that uses it by using SelectionDAG::getVTList instead.

llvm-svn: 68744
2009-04-09 23:54:40 +00:00
Bill Wendling 16abfc97fb StringMap<DIE*>::iterator::first() returns a pointer to the first character of
the key. This will cause it to create a new std::string, which isn't
wanted. Instead, pass back the "const char*". Modify the EmitString() method to
take a "const char*".

llvm-svn: 68741
2009-04-09 23:51:31 +00:00
Devang Patel a68bdef482 Silence unused variable warning.
llvm-svn: 68735
2009-04-09 23:45:17 +00:00
Chris Lattner 66ab904f5a ignore register zero in isRegTiedToUseOperand, following the example of
isRegTiedToDefOperand.  Thanks to Bob for pointing this out!

llvm-svn: 68734
2009-04-09 23:33:34 +00:00
Owen Anderson 5eb8d26f19 Give register alias checking the hash table treatment too.
llvm-svn: 68730
2009-04-09 22:19:30 +00:00
Bill Wendling e65fd1a302 Use a StringMap instead of std::map for storing std::string->DIE* maps. This
gives a micro speedup in the Dwarf writer.

llvm-svn: 68728
2009-04-09 21:49:15 +00:00
Devang Patel a2c2b85df4 llvm.dbg.func_start also defines beginning of function scope.
llvm-svn: 68727
2009-04-09 21:42:11 +00:00
Bob Wilson 51856173c8 Fix pr3954. The register scavenger asserts for inline assembly with
register destinations that are tied to source operands.  The
TargetInstrDescr::findTiedToSrcOperand method silently fails for inline
assembly.  The existing MachineInstr::isRegReDefinedByTwoAddr was very
close to doing what is needed, so this revision makes a few changes to
that method and also renames it to isRegTiedToUseOperand (for consistency
with the very similar isRegTiedToDefOperand and because it handles both
two-address instructions and inline assembly with tied registers).

llvm-svn: 68714
2009-04-09 17:16:43 +00:00
Sanjiv Gupta 38533d48dd The way we are trying to figure out banksel immediate operand may yield different results for different type of insns. This will eventually need to be changed but currently let us prevent the crash in cases of incorrect detection of banksel operand.
llvm-svn: 68713
2009-04-09 17:06:24 +00:00
Chris Lattner a725028d41 reg0 references are not real registers. This fixes a crash on the
attached testcase.

llvm-svn: 68712
2009-04-09 16:50:43 +00:00
Sanjiv Gupta 60fd2cd503 Arguments to indirect calls were being passed incorrectly. They are not fixed to start after return value.
llvm-svn: 68705
2009-04-09 10:29:32 +00:00
Chris Lattner bcd2632638 Fix code size computation on x86-64, patch by Zoltan Varga!
llvm-svn: 68690
2009-04-09 06:10:51 +00:00
Sanjiv Gupta cdfdc79b70 r68576 unconverd a bug in PIC16 port (Thanks to Dan Gohman) where we were custom lowering an ADD to ADDC.
llvm-svn: 68671
2009-04-09 04:03:43 +00:00
Dan Gohman 0e8d199f91 Generalize ExtendUsesToFormExtLoad to be usable for ANY_EXTEND,
in addition to ZERO_EXTEND and SIGN_EXTEND. Fix a bug in the
way it checked for live-out values, and simplify the way it
find users by using SDNode::use_iterator's (relatively) new
features. Also, make it slightly more permissive on targets
with free truncates.

In SelectionDAGBuild, avoid creating ANY_EXTEND nodes that are
larger than necessary. If the target's SwitchAmountTy has
enough bits, use it. This exposes the truncate to optimization
early, enabling more optimizations.

llvm-svn: 68670
2009-04-09 03:51:29 +00:00
Owen Anderson 3a888f639e Convert TargetRegisterInfo's super-register checking to use a pre-computed hash table just like subregister checking does.
llvm-svn: 68669
2009-04-09 03:50:16 +00:00
Dan Gohman e6db8ca5eb Don't copy the operand of a SwitchInst into virtual registers as
eagerly. This helps avoid CopyToReg nodes in some cases where they
aren't needed, and also helps subsequent optimizer heuristics
in cases where the extra nodes would cause the node to appear
to have multiple results. This doesn't have a significant impact
currently; it'll help an upcoming change.

llvm-svn: 68667
2009-04-09 02:33:36 +00:00
Dan Gohman f15454866c Fix grammaros in comments.
llvm-svn: 68666
2009-04-09 02:06:09 +00:00
Daniel Dunbar 3f48987069 Add sys::Path::makeAbsolute().
llvm-svn: 68663
2009-04-09 00:33:08 +00:00
Devang Patel 3396d7ef9d If subprogram type is not tagged as DW_TAG_subroutine_type then use it directly as a return value type.
llvm-svn: 68647
2009-04-08 22:18:45 +00:00
Rafael Espindola 3b2df10c9e Re-apply 68552.
Tested by bootstrapping llvm-gcc and using that to build llvm.

llvm-svn: 68645
2009-04-08 21:14:34 +00:00
Bob Wilson 866c174f79 Fix PR3795: Apply Dan's suggested fix for
ARMTargetLowering::isLegalAddressingMode.

llvm-svn: 68619
2009-04-08 17:55:28 +00:00
Duncan Sands 5a82613db0 Soft float support for FREM.
llvm-svn: 68614
2009-04-08 16:20:57 +00:00
Duncan Sands fb438caac6 Soft float support for undef. Reported by Xerxes Rånby.
llvm-svn: 68607
2009-04-08 13:33:37 +00:00
Rafael Espindola d173f4237d Avoid a hard coded constant.
llvm-svn: 68603
2009-04-08 08:09:33 +00:00
Sanjiv Gupta 44ea053a49 Emit .line debug directives for stoppoints. The debug location is retrieved by the MachineInstr itself, rather than by custom handling the DBG_STOPPOINT nodes.
llvm-svn: 68602
2009-04-08 06:24:04 +00:00
Chris Lattner eb510d6b3d Instcombine should not promote whole computation trees to "strange"
integer types, unless they are already strange.  This prevents it from
turning the code produced by SROA into crazy libcalls and stuff that 
the code generator can't handle.  In the attached example, the result
was an i96 multiply that caused the x86 backend to assert.

Note that if TargetData had an idea of what the legal types are for
a target that this could be used to stop instcombine from introducing
i64 muls, as Scott wanted.

llvm-svn: 68598
2009-04-08 05:41:03 +00:00
Sanjiv Gupta 4b489c75c2 Handle indirect function calls.
Every function has the address of its frame in the beginning of code section.
The frame address is retrieved and used to pass arguments.

llvm-svn: 68597
2009-04-08 05:38:48 +00:00
Chris Lattner a72576e92b disable this code for now, re-breaking PR2975, but fixing
a testcase I'm about to attach to that pr.

llvm-svn: 68592
2009-04-08 04:36:59 +00:00
Chris Lattner 3875195865 Remove AllowInverse: it leaks memory and is not the right
abstraction for CommandLine.

llvm-svn: 68588
2009-04-08 03:43:51 +00:00
Chris Lattner 69b586e547 change printStringChar to emit characters as unsigned char instead of char,
avoiding sign extension for the top octet.  For "negative" chars, we'd print
stuff like:

.asciz	"\702...
now we print:
.asciz	"\302...

llvm-svn: 68577
2009-04-08 00:28:38 +00:00