Commit Graph

1056 Commits

Author SHA1 Message Date
Evan Cheng
babf11f249 Patches for building llvm on Solaris x86. Contributed by Nathan Keynes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51775 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-30 17:16:20 +00:00
Dan Gohman
1baa88e3de Prune and tidy #includes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51697 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-29 19:52:31 +00:00
Bill Wendling
8370d38ade Add a flag to indicate that an instruction is as cheap (or cheaper) than a move
instruction to execute. This can be used for transformations (like two-address
conversion) to remat an instruction instead of generating a "move"
instruction. The idea is to decrease the live ranges and register pressure and
all that jazz.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51660 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-28 22:54:52 +00:00
Bill Wendling
13d57320bd Remove warnings about unused parameters and shadowed variables.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51266 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-19 20:15:12 +00:00
Evan Cheng
0ef8de30fa Fix typos and comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51165 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-15 22:13:02 +00:00
Evan Cheng
f0df03134e Make use of vector load and store operations to implement memcpy, memmove, and memset. Currently only X86 target is taking advantage of these.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51140 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-15 08:39:06 +00:00
Evan Cheng
9bfa03c6fd Xform bitconvert(build_pair(load a, load b)) to a single load if the load locations are at the right offset from each other.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51008 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-12 23:04:07 +00:00
Bill Wendling
9f8fea3531 Constify the machine instruction passed into the
"is{Trivially,Really}ReMaterializable" methods.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51001 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-12 20:54:26 +00:00
Evan Cheng
f86f211ec2 Forgot this.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50993 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-12 20:08:05 +00:00
Evan Cheng
c6c6a3e2b3 Make OpActionsCapacity multiple of 4.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50917 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-09 21:50:23 +00:00
Duncan Sands
671fa97a4b Output correct exception handling and frame info
on x86-64 linux.  This causes no regressions on
32 bit linux and 32 bit ppc.  More tests pass
on 64 bit ppc with no regressions.  I didn't
turn on eh on 64 bit linux because the intrinsics
needed to compile the eh runtime aren't done
yet.  But if you turn it on and link with the
mainline runtime then eh seems to work fine
on x86-64 linux with this patch.  Thanks to
Dale for testing.  The main point of the patch
is that if you output that some object is
encoded using 4 bytes you had better not output
8 bytes for it: the patch makes everything
consistent.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50825 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-07 19:11:09 +00:00
Mon P Wang
63307c335a Added addition atomic instrinsics and, or, xor, min, and max.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50663 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-05 19:05:59 +00:00
Evan Cheng
34cd4a484e Fix more -Wshorten-64-to-32 warnings.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50659 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-05 18:30:58 +00:00
Dan Gohman
a779a9899a Add AsmPrinter support for emitting a directive to declare that
the code being generated does not require an executable stack.

Also, add target-specific code to make use of this on Linux
on x86. 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50634 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-05 00:28:39 +00:00
Arnold Schwaighofer
30e62c098b Tail call optimization improvements:
Move platform independent code (lowering of possibly overwritten
arguments, check for tail call optimization eligibility) from
target X86ISelectionLowering.cpp to TargetLowering.h and
SelectionDAGISel.cpp.

Initial PowerPC tail call implementation:

Support ppc32 implemented and tested (passes my tests and
test-suite llvm-test).  
Support ppc64 implemented and half tested (passes my tests).
On ppc tail call optimization is performed if 
  caller and callee are fastcc
  call is a tail call (in tail call position, call followed by ret)
  no variable argument lists or byval arguments
  option -tailcallopt is enabled
Supported:
 * non pic tail calls on linux/darwin
 * module-local tail calls on linux(PIC/GOT)/darwin(PIC)
 * inter-module tail calls on darwin(PIC)
If constraints are not met a normal call will be emitted.

A test checking the argument lowering behaviour on x86-64 was added.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50477 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-30 09:16:33 +00:00
Chris Lattner
5a09690446 Implement a signficant optimization for inline asm:
When choosing between constraints with multiple options,
like "ir", test to see if we can use the 'i' constraint and
go with that if possible.  This produces more optimal ASM in
all cases (sparing a register and an instruction to load it),
and fixes inline asm like this:

void test () {
  asm volatile (" %c0 %1 " : : "imr" (42), "imr"(14));
}

Previously we would dump "42" into a memory location (which
is ok for the 'm' constraint) which would cause a problem
because the 'c' modifier is not valid on memory operands.

Isn't it great how inline asm turns 'missed optimization'
into 'compile failed'??

Incidentally, this was the todo in 
PowerPC/2007-04-24-InlineAsm-I-Modifier.ll

Please do NOT pull this into Tak.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50315 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-27 00:37:18 +00:00
Chris Lattner
4376fea663 Move a bunch of inline asm code out of line.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50313 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-27 00:09:47 +00:00
Chris Lattner
5e764233f3 A few inline asm cleanups:
- Make targetlowering.h fit in 80 cols.
  - Make LowerAsmOperandForConstraint const.
  - Make lowerXConstraint -> LowerXConstraint
  - Make LowerXConstraint return a const char* instead of taking a string byref.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50312 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-26 23:02:14 +00:00
Anton Korobeynikov
769b481e9f Add facility for pre-RA passes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50165 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-23 18:22:28 +00:00
Anton Korobeynikov
45709ae09b Make stack alignment options global for all targets
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50157 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-23 18:18:10 +00:00
Nicolas Geoffray
51cc3c13ea Correlate stubs with functions in JIT: when emitting a stub, the JIT tells the memory manager which function
the stub will resolve.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49814 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-16 20:46:05 +00:00
Nicolas Geoffray
52e724ad7e Infrastructure for getting the machine code size of a function and an instruction. X86, PowerPC and ARM are implemented
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49809 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-16 20:10:13 +00:00
Evan Cheng
8102703d70 Sort sub-registers and super-registers lists according to super-sub register relations. e.g. X86::RAX sub-register list is EAX, AX, AL, AH (order of last two are not guaranteed).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49714 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-15 07:56:03 +00:00
Dan Gohman
29e4bdbf27 Fix const-correctness issues with the SrcValue handling in the
memory intrinsic expansion code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49666 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-14 17:55:48 +00:00
Dale Johannesen
3541af73b6 Reverse sense of unwind-tables option. This means
stack tracebacks on Darwin x86-64 won't work by default;
nevertheless, everybody but me thinks this is a good idea.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49663 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-14 17:54:17 +00:00
Dan Gohman
ec1f1a8bd2 Clean up some comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49661 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-14 17:45:20 +00:00
Dan Gohman
707e018423 Drop ISD::MEMSET, ISD::MEMMOVE, and ISD::MEMCPY, which are not Legal
on any current target and aren't optimized in DAGCombiner. Instead
of using intermediate nodes, expand the operations, choosing between
simple loads/stores, target-specific code, and library calls,
immediately.

Previously, the code to emit optimized code for these operations
was only used at initial SelectionDAG construction time; now it is
used at all times. This fixes some cases where rep;movs was being
used for small copies where simple loads/stores would be better.

This also cleans up code that checks for alignments less than 4;
let the targets make that decision instead of doing it in
target-independent code. This allows x86 to use rep;movs in
low-alignment cases.

Also, this fixes a bug that resulted in the use of rep;stos for
memsets of 0 with non-constant memory size when the alignment was
at least 4. It's better to use the library in this case, which
can be significantly faster when the size is large.

This also preserves more SourceValue information when memory
intrinsics are lowered into simple loads/stores.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49572 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-12 04:36:06 +00:00
Dan Gohman
7d8143f0ef Make isVectorClearMaskLegal's operand list const.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49446 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-09 20:09:42 +00:00
Dan Gohman
920c6828ee Fix some minor errors in comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49445 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-09 20:08:06 +00:00
Dale Johannesen
4e1b79459f Implement new llc flag -disable-required-unwind-tables.
Corresponds to -fno-unwind-tables (usually default in gcc).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49361 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-08 00:10:24 +00:00
Evan Cheng
ca1267c02b Move reMaterialize() from TargetRegisterInfo to TargetInstrInfo.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48995 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-31 20:40:39 +00:00
Chris Lattner
d27c991ceb Fix "Control reaches the end of non-void function" warnings,
patch by David Chisnall.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48963 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-30 18:22:13 +00:00
Dale Johannesen
d9ffd4cb92 Fix a bug in Darwin EH: FDE->CIE pointer must
be relocatable.  Describe why .set is needed better.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48848 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-26 23:31:39 +00:00
Dan Gohman
cfbb2f074d A quick nm audit turned up several fixed tables and objects that were
marked read-write. Use const so that they can be allocated in a
read-only segment.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48800 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-25 21:45:14 +00:00
Devang Patel
55c666a867 Add optimize-for-size knob.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48793 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-25 21:02:35 +00:00
Christopher Lamb
c929823525 Make insert_subreg a two-address instruction, vastly simplifying LowerSubregs pass. Add a new TII, subreg_to_reg, which is like insert_subreg except that it takes an immediate implicit value to insert into rather than a register.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48412 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-16 03:12:01 +00:00
Evan Cheng
20ccded7de Remove isImplicitDef TargetInstrDesc flag.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48381 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-15 00:19:36 +00:00
Evan Cheng
da47e6e0d0 Replace all target specific implicit def instructions with a target independent one: TargetInstrInfo::IMPLICIT_DEF.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48380 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-15 00:03:38 +00:00
Christopher Lamb
6634e26aa1 Get rid of a pseudo instruction and replace it with subreg based operation on real instructions, ridding the asm printers of the hack used to do this previously. In the process, update LowerSubregs to be careful about eliminating copies that have side affects.
Note: the coalescer will have to be careful about this too, when it starts coalescing insert_subreg nodes.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48329 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-13 05:47:01 +00:00
Dan Gohman
bfae83139d Use PassManagerBase instead of FunctionPassManager for functions
that merely add passes. This allows them to be used with either
FunctionPassManager or PassManager, or even with a custom new
kind of pass manager.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48256 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11 22:29:46 +00:00
Evan Cheng
676dd7c80b When the register allocator runs out of registers, spill a physical register around the def's and use's of the interval being allocated to make it possible for the interval to target a register and spill it right away and restore a register for uses. This likely generates terrible code but is before than aborting.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48218 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11 07:19:34 +00:00
Scott Michel
5b8f82e35b Give TargetLowering::getSetCCResultType() a parameter so that ISD::SETCC's
return ValueType can depend its operands' ValueType.

This is a cosmetic change, no functionality impacted.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48145 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-10 15:42:14 +00:00
Evan Cheng
6fd599fa69 Add a target lowering hook to control whether it's worthwhile to compress fp constant.
For x86, if sse2 is available, it's not a good idea since cvtss2sd is slower than a movsd load and it prevents load folding. On x87, it's important to shrink fp constant since fldt is very expensive.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47931 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-05 01:30:59 +00:00
Anton Korobeynikov
8213f9cf94 Use enumeration for preffered EH dwarf encoding reason
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47770 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-29 22:09:08 +00:00
Dale Johannesen
28d08fdb9f Interface of getByValTypeAlignment differed between
generic & x86 versions; change generic to follow x86
and improve comments.  Add PPC version (not right
for non-Darwin.)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47734 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-28 22:31:51 +00:00
Evan Cheng
fb8075d03f Add a quick and dirty "loop aligner pass". x86 uses it to align its loops to 16-byte boundaries.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47703 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-28 00:43:03 +00:00
Anton Korobeynikov
cee750fb1e Preparation step for some cleanup/generalization in EH information emission:
provide TAI hook for selection of EH data emission format. Currently unused.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47699 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-27 23:33:50 +00:00
Dan Gohman
7b8d4a9eef Convert SimplifyDemandedMask and ShrinkDemandedConstant to use APInt.
Change several cases in SimplifyDemandedMask that don't ever do any
simplifying to reuse the logic in ComputeMaskedBits instead of
duplicating it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47648 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-27 00:25:32 +00:00
Bill Wendling
e6d088acc9 Rename PrintableName to Name.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47629 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-26 21:47:57 +00:00
Bill Wendling
74ab84c31e Change "Name" to "AsmName" in the target register info. Gee, a refactoring tool
would have been a Godsend here!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47625 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-26 21:11:01 +00:00
Evan Cheng
5c80760fdf Refactor inline asm constraint matching code out of SDIsel into TargetLowering.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47587 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-26 02:33:44 +00:00
Bill Wendling
181eb737b2 Some platforms use the same name for 32-bit and 64-bit registers (like
%r3 on PPC) in their ASM files. However, it's hard for humans to read
during debugging. Adding a new field to the register data that lets you
specify a different name to be printed than the one that goes into the
ASM file -- %x3 instead of %r3, for instance.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47534 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-24 00:56:13 +00:00
Evan Cheng
8ec57d7005 Remove an invalid assertion now that there are implicit virtual register operands.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47493 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-22 19:25:04 +00:00
Dale Johannesen
08e78b18b8 Pass alignment on ByVal parameters, from FE, all
the way through.  It is now used for codegen.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47484 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-22 17:49:45 +00:00
Andrew Lenharth
ab0b949e0e Atomic op support. If any gcc test uses __sync builtins, it might start failing on archs that haven't implemented them yet
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47430 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-21 06:45:13 +00:00
Anton Korobeynikov
ae9f3a3b7c Unbreak build with gcc 4.3: provide missed includes and silence most annoying warnings.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47367 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-20 11:08:44 +00:00
Evan Cheng
f20db15954 Added CommuteChangesDestination(). This returns true if commuting the specified
machine instr will change its definition register.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47166 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-15 18:21:33 +00:00
Duncan Sands
00fee65fd2 In TargetLowering::LowerCallTo, don't assert that
the return value is zero-extended if it isn't
sign-extended.  It may also be any-extended.
Also, if a floating point value was returned
in a larger floating point type, pass 1 as the
second operand to FP_ROUND, which tells it
that all the precision is in the original type.
I think this is right but I could be wrong.
Finally, when doing libcalls, set isZExt on
a parameter if it is "unsigned".  Currently
isSExt is set when signed, and nothing is
set otherwise.  This should be right for all
calls to standard library routines.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47122 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-14 17:28:50 +00:00
Dan Gohman
977a76fbb6 Simplify some logic in ComputeMaskedBits. And change ComputeMaskedBits
to pass the mask APInt by value, not by reference. 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47096 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 22:28:48 +00:00
Dan Gohman
fd29e0eb06 Convert SelectionDAG::ComputeMaskedBits to use APInt instead of uint64_t.
Add an overload that supports the uint64_t interface for use by clients
that haven't been updated yet.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47039 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 00:35:47 +00:00
Duncan Sands
04feb51886 Add arbitrary integer support to getRegisterType and
getNumRegisters.  This is needed for calling functions
with apint parameters or return values.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46956 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-11 11:09:23 +00:00
Duncan Sands
0753fc1850 Add a isBigEndian method to complement isLittleEndian.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46954 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-11 10:37:04 +00:00
Dan Gohman
6f0d024a53 Rename MRegisterInfo to TargetRegisterInfo.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46930 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-10 18:45:23 +00:00
Evan Cheng
5fd79d0560 It's not always safe to fold movsd into xorpd, etc. Check the alignment of the load address first to make sure it's 16 byte aligned.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46893 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-08 21:20:40 +00:00
Evan Cheng
a844bdeab3 SDIsel processes llvm.dbg.declare by recording the variable debug information descriptor and its corresponding stack frame index in MachineModuleInfo. This only works if the local variable is "homed" in the stack frame. It does not work for byval parameter, etc.
Added ISD::DECLARE node type to represent llvm.dbg.declare intrinsic. Now the intrinsic calls are lowered into a SDNode and lives on through out the codegen passes.
For now, since all the debugging information recording is done at isel time, when a ISD::DECLARE node is selected, it has the side effect of also recording the variable. This is a short term solution that should be fixed in time.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46659 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-02 04:07:54 +00:00
Evan Cheng
b8033e821d Frame index can be negative.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46655 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-02 00:17:00 +00:00
Evan Cheng
72bebb9205 MRegisterInfo::getLocation() is a really bad idea. Its function is to calculate the offset from frame pointer to a stack slot and then storing the delta in a MachineLocation object. The name is bad (it implies a getter), and MRegisterInfo doesn't need to know about MachineLocation.
Replace getLocation() with getFrameIndexOffset() which returns the delta from frame pointer to stack slot. Dwarf writer can then use the information for whatever it wants.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46597 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-31 03:37:28 +00:00
Evan Cheng
ff9b373e8f Even though InsertAtEndOfBasicBlock is an ugly hack it still deserves a proper name. Rename it to EmitInstrWithCustomInserter since it does not necessarily insert
instruction at the end.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46562 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-30 18:18:23 +00:00
Duncan Sands
d102593b42 Use getPreferredAlignmentLog or getPreferredAlignment
to get the alignment of global variables, rather than
using hand-made versions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46495 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-29 06:23:44 +00:00
Dale Johannesen
ba2a0b960e Handle 'X' constraint in asm's better.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46485 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-29 02:21:21 +00:00
Duncan Sands
a095db13bf Add more assertions to catch accesses outside of
arrays.  Also, as a convenience, don't barf, just
return false, if someone calls isTruncStoreLegal
or isLoadXLegal with an extended type for the in
memory type.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46352 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-25 10:20:53 +00:00
Evan Cheng
2928650262 Let each target decide byval alignment. For X86, it's 4-byte unless the aggregare contains SSE vector(s). For x86-64, it's max of 8 or alignment of the type.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46286 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-23 23:17:41 +00:00
Chris Lattner
561e8c80f5 remove magic numbers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46162 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-18 17:13:03 +00:00
Chris Lattner
ddf89566a9 This commit changes:
1. Legalize now always promotes truncstore of i1 to i8. 
2. Remove patterns and gunk related to truncstore i1 from targets.
3. Rename the StoreXAction stuff to TruncStoreAction in TLI.
4. Make the TLI TruncStoreAction table a 2d table to handle from/to conversions.
5. Mark a wide variety of invalid truncstores as such in various targets, e.g.
   X86 currently doesn't support truncstore of any of its integer types.
6. Add legalize support for truncstores with invalid value input types.
7. Add a dag combine transform to turn store(truncate) into truncstore when
   safe.

The later allows us to compile CodeGen/X86/storetrunc-fp.ll to:

_foo:
	fldt	20(%esp)
	fldt	4(%esp)
	faddp	%st(1)
	movl	36(%esp), %eax
	fstps	(%eax)
	ret

instead of:

_foo:
	subl	$4, %esp
	fldt	24(%esp)
	fldt	8(%esp)
	faddp	%st(1)
	fstps	(%esp)
	movl	40(%esp), %eax
	movss	(%esp), %xmm0
	movss	%xmm0, (%eax)
	addl	$4, %esp
	ret



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46140 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-17 19:59:44 +00:00
Dale Johannesen
4af3494452 Fix and enable EH for x86-64 Darwin. Adds
ShortenEHDataFor64Bits as a not-very-accurate
abstraction to cover all the changes in DwarfWriter.
Some cosmetic changes to Darwin assembly code for
gcc testsuite compatibility.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46029 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-15 23:24:56 +00:00
Chris Lattner
a22edc82ca Simplify the side effect stuff a bit more and make licm/sinking
both work right according to the new flags.

This removes the TII::isReallySideEffectFree predicate, and adds
TII::isInvariantLoad. 

It removes NeverHasSideEffects+MayHaveSideEffects and adds
UnmodeledSideEffects as machine instr flags.  Now the clients
can decide everything they need.

I think isRematerializable can be implemented in terms of the
flags we have now, though I will let others tackle that.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45843 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-10 23:08:24 +00:00
Dale Johannesen
038129dd58 Emit unused EH frames for weak definitions on Darwin,
because assembler/linker can't cope with weak absolutes.
PR 1880.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45811 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-10 02:03:30 +00:00
Chris Lattner
9c4428b217 Fix PR1845 and rdar://5676945. Generic vectors smaller
than hardware supported type will be scalarized, so we
can infer their alignment from that info.

We now codegen pr1845 into:

_boolVectorSelect:
	lbz r2, 0(r3)
	stb r2, -16(r1)
	blr 



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45796 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-10 00:30:57 +00:00
Chris Lattner
dcc8b4f5d3 add a mayLoad property for machine instructions, a correlary to mayStore.
This is currently not set by anything.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45748 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-08 18:05:21 +00:00
Chris Lattner
d3f99e2bbf split TargetInstrDesc out into its own header file.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45696 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 07:33:08 +00:00
Chris Lattner
749c6f6b5e rename TargetInstrDescriptor -> TargetInstrDesc.
Make MachineInstr::getDesc return a reference instead
of a pointer, since it can never be null.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45695 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 07:27:27 +00:00
Chris Lattner
682b8aed07 remove a dead method.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45694 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 06:47:10 +00:00
Chris Lattner
0ff23966fe Rename all the M_* flags to be namespace qualified enums, and switch
all clients over to using predicates instead of these flags directly.
These are now private values which are only to be used to statically
initialize the tables.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45692 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 06:42:05 +00:00
Chris Lattner
e32d765f99 add more and significantly better comments to the rest of the machineinstr
flags that can be set.  Add predicates for the ones lacking it, and switch
some clients over to using the predicates instead of Flags directly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45690 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 06:21:53 +00:00
Chris Lattner
13cea0bcef add some mroe comments, add a isImplicitDef() method, add
isConditionalBranch() and isUnconditionalBranch() methods.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45688 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 05:38:38 +00:00
Chris Lattner
8f707e15fb rename hasVariableOperands() -> isVariadic(). Add some comments.
Evan, please review the comments I added to getNumDefs to make sure
that they are accurate, thx.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45687 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 05:19:29 +00:00
Chris Lattner
4764189298 Move M_* flags down in the file. Move SchedClass up in the
TargetInstrDescriptor class and shrink to 16-bits, saving a 
word in TargetInstrDescriptor.  Add some comments.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45686 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 05:06:49 +00:00
Chris Lattner
349c495200 Move a bunch more accessors from TargetInstrInfo to TargetInstrDescriptor
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45680 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 03:13:06 +00:00
Chris Lattner
cc8cd0cbf1 remove MachineOpCode typedef.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45679 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 02:48:55 +00:00
Chris Lattner
ba6da5d5b7 remove some uses of MachineOpCode, move getSchedClass
into TargetInstrDescriptor from TargetInstrInfo.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45678 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 02:46:03 +00:00
Chris Lattner
8ca5c67c6e Add predicates methods to TargetOperandInfo, and switch all clients
over to using them, instead of diddling Flags directly.  Change the
various flags from const variables to enums.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45677 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 02:39:19 +00:00
Chris Lattner
69244300b8 Rename MachineInstr::getInstrDescriptor -> getDesc(), which reflects
that it is cheap and efficient to get.

Move a variety of predicates from TargetInstrInfo into 
TargetInstrDescriptor, which makes it much easier to query a predicate
when you don't have TII around.  Now you can use MI->getDesc()->isBranch()
instead of going through TII, and this is much more efficient anyway. Not
all of the predicates have been moved over yet.

Update old code that used MI->getInstrDescriptor()->Flags to use the
new predicates in many places.




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45674 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 01:56:04 +00:00
Owen Anderson
43dbe05279 Move even more functionality from MRegisterInfo into TargetInstrInfo.
Some day I'll get it all moved over...


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45672 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 01:35:02 +00:00
Chris Lattner
834f1ce031 rename isLoad -> isSimpleLoad due to evan's desire to have such a predicate.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45667 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-06 23:38:27 +00:00
Chris Lattner
2e48a70b35 rename isStore -> mayStore to more accurately reflect what it captures.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45656 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-06 08:36:04 +00:00
Chris Lattner
8ed9c1a6d9 describe isStore and simplify the implementation of hasUnmodelledSideEffects.
No functionality change. 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45651 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-06 05:43:21 +00:00
Evan Cheng
2a3e08b596 X86 JIT PIC jumptable support.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45616 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-05 02:26:58 +00:00
Owen Anderson
d94b6a16fe Move some more functionality from MRegisterInfo to TargetInstrInfo.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45603 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-04 23:57:37 +00:00
Evan Cheng
be8c03fc66 X86 PIC JIT support fixes: encoding bugs, add lazy pointer stubs support.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45575 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-04 10:46:51 +00:00
Owen Anderson
f6372aa1cc Move some more instruction creation methods from RegisterInfo into InstrInfo.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45484 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-01 21:11:32 +00:00
Chris Lattner
6410552250 Fix a problem where lib/Target/TargetInstrInfo.h would include and use
a header file from libcodegen.  This violates a layering order: codegen
depends on target, not the other way around.  The fix to this is to 
split TII into two classes, TII and TargetInstrInfoImpl, which defines
stuff that depends on libcodegen.  It is defined in libcodegen, where 
the base is not.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45475 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-01 01:03:04 +00:00
Owen Anderson
d10fd9791c Move copyRegToReg from MRegisterInfo to TargetInstrInfo. This is part of the
Machine-level API cleanup instigated by Chris.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45470 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-31 06:32:00 +00:00
Chris Lattner
84bc5427d6 Rename SSARegMap -> MachineRegisterInfo in keeping with the idea
that "machine" classes are used to represent the current state of
the code being compiled.  Given this expanded name, we can start 
moving other stuff into it.  For now, move the UsedPhysRegs and
LiveIn/LoveOuts vectors from MachineFunction into it.

Update all the clients to match.

This also reduces some needless #includes, such as MachineModuleInfo
from MachineFunction.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45467 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-31 04:13:23 +00:00
Chris Lattner
7ed47a1335 Don't attribute in file headers anymore. See llvmdev for the
discussion of this change.  Boy are my fingers tired. ;-)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45411 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-29 19:59:42 +00:00
Chris Lattner
b16f55f3c8 Tell TargetLoweringOpt whether it is running before
or after legalize.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45321 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-22 20:56:36 +00:00
Bill Wendling
4be2f7fe57 s/hasSideEffects/hasUnmodelledSideEffects/g
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45133 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-17 23:19:54 +00:00
Bill Wendling
882d291487 Add "hasSideEffects" method to MachineInstrInfo class.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45126 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-17 21:53:30 +00:00
Bill Wendling
7d9e97c2ac As per feedback, revised comments to (hopefully) make the different side effect
flags clearer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45120 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-17 21:02:07 +00:00
Dan Gohman
28174c5aa2 Fix a typo in a comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45032 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-14 15:13:08 +00:00
Bill Wendling
6b1da9c39f Add flags to indicate that there are "never" side effects or that there "may be"
side effects for machine instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45022 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-14 01:48:59 +00:00
Evan Cheng
6e141fd048 Implicit def instructions, e.g. X86::IMPLICIT_DEF_GR32, are always re-materializable and they should not be spilled.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44960 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-12 23:12:09 +00:00
Duncan Sands
67f1c493d1 Remove host endianness info from TargetData and
put it in a new header System/Host.h instead.
Instead of getting the endianness from configure,
calculate it directly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44959 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-12 23:03:45 +00:00
Dan Gohman
8d2ed33f6f Remove a forward-declaration for a non-existant class.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44955 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-12 22:25:09 +00:00
Bill Wendling
8245aab330 Bit masks conflicted. Needed to bump them by one.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44903 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-12 01:51:58 +00:00
Chris Lattner
57d7d3f2d7 Move TargetData::hostIsLittleEndian out of line, which means we
don't have to #include config.h in it.  #including config.h breaks
other projects that have their own autoconf stuff and try to #include
the llvm headers.  One obscure example is llvm-gcc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44825 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-11 00:28:59 +00:00
Duncan Sands
1eff70451f Fix PR1836: in the interpreter, read and write apints
using the minimum possible number of bytes.  For little
endian targets run on little endian machines, apints are
stored in memory from LSB to MSB as before.  For big endian
targets on big endian machines they are stored from MSB to
LSB which wasn't always the case before (if the target and
host endianness doesn't match values are stored according
to the host's endianness).  Doing this requires knowing the
endianness of the host, which is determined when configuring -
thanks go to Anton for this.  Only having access to little
endian machines I was unable to properly test the big endian
part, which is also the most complicated...


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44796 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-10 17:43:13 +00:00
Bill Wendling
041b3f8356 Reverting 44702. It wasn't correct to rename them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44727 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-08 23:58:46 +00:00
Bill Wendling
320c630c1b Renaming:
isTriviallyReMaterializable -> hasNoSideEffects
  isReallyTriviallyReMaterializable -> isTriviallyReMaterializable


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44702 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-08 07:17:56 +00:00
Evan Cheng
d64b5c82b9 Add a argument to storeRegToStackSlot and storeRegToAddr to specify whether
the stored register is killed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44600 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-05 03:14:33 +00:00
Evan Cheng
aee4af68ae Remove redundant foldMemoryOperand variants and other code clean up.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44517 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-02 08:30:39 +00:00
Evan Cheng
e62f97c094 Allow some reloads to be folded in multi-use cases. Specifically testl r, r -> cmpl [mem], 0.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44479 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-01 02:07:52 +00:00
Chris Lattner
27a6c7380f Several changes:
1) Change the interface to TargetLowering::ExpandOperationResult to 
   take and return entire NODES that need a result expanded, not just
   the value.  This allows us to handle things like READCYCLECOUNTER,
   which returns two values.
2) Implement (extremely limited) support in LegalizeDAG::ExpandOp for MERGE_VALUES.
3) Reimplement custom lowering in LegalizeDAGTypes in terms of the new
   ExpandOperationResult.  This makes the result simpler and fully 
   general.
4) Implement (fully general) expand support for MERGE_VALUES in LegalizeDAGTypes.
5) Implement ExpandOperationResult support for ARM f64->i64 bitconvert and ARM
   i64 shifts, allowing them to work with LegalizeDAGTypes.
6) Implement ExpandOperationResult support for X86 READCYCLECOUNTER and FP_TO_SINT,
   allowing them to work with LegalizeDAGTypes.

LegalizeDAGTypes now passes several more X86 codegen tests when enabled and when
type legalization in LegalizeDAG is ifdef'd out.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44300 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-24 07:07:01 +00:00
Dale Johannesen
526e39a02b File missing from previous patch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44259 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-20 23:25:17 +00:00
Dan Gohman
50cdabcfd5 Remove meaningless qualifiers from return types, avoiding compiler warnings.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44240 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-19 20:46:23 +00:00
Dale Johannesen
b97aec663b Add parameter to getDwarfRegNum to permit targets
to use different mappings for EH and debug info;
no functional change yet.
Fix warning in X86CodeEmitter.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44056 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-13 19:13:01 +00:00
Owen Anderson
20ab29068d Add a flag for indirect branch instructions.
Target maintainers: please check that the instructions for your target are correctly marked.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44012 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-12 07:39:39 +00:00
Evan Cheng
cc41586b9d Much improved pic jumptable codegen:
Then:
        call    "L1$pb"
"L1$pb":
        popl    %eax
		...
LBB1_1: # entry
        imull   $4, %ecx, %ecx
        leal    LJTI1_0-"L1$pb"(%eax), %edx
        addl    LJTI1_0-"L1$pb"(%ecx,%eax), %edx
        jmpl    *%edx

        .align  2
        .set L1_0_set_3,LBB1_3-LJTI1_0
        .set L1_0_set_2,LBB1_2-LJTI1_0
        .set L1_0_set_5,LBB1_5-LJTI1_0
        .set L1_0_set_4,LBB1_4-LJTI1_0
LJTI1_0:
        .long    L1_0_set_3
        .long    L1_0_set_2

Now:
        call    "L1$pb"
"L1$pb":
        popl    %eax
		...
LBB1_1: # entry
        addl    LJTI1_0-"L1$pb"(%eax,%ecx,4), %eax
        jmpl    *%eax

		.align  2
		.set L1_0_set_3,LBB1_3-"L1$pb"
		.set L1_0_set_2,LBB1_2-"L1$pb"
		.set L1_0_set_5,LBB1_5-"L1$pb"
		.set L1_0_set_4,LBB1_4-"L1$pb"
LJTI1_0:
        .long    L1_0_set_3
        .long    L1_0_set_2


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43924 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-09 01:32:10 +00:00
Hartmut Kaiser
a1dc96edd2 Fixed compilation errors on VC++.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43836 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-07 19:33:31 +00:00
Rafael Espindola
f1ba1cad38 Move the LowerMEMCPY and LowerMEMCPYCall to a common place.
Thanks for the suggestions Bill :-)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43742 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-05 23:12:20 +00:00
Duncan Sands
ca0ed74485 Eliminate the remaining uses of getTypeSize. This
should only effect x86 when using long double.  Now
12/16 bytes are output for long double globals (the
exact amount depends on the alignment).  This brings
globals in line with the rest of LLVM: the space
reserved for an object is now always the ABI size.
One tricky point is that only 10 bytes should be
output for long double if it is a field in a packed
struct, which is the reason for the additional
argument to EmitGlobalConstant.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43688 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-05 00:04:43 +00:00
Duncan Sands
3cb3650a27 Change uses of getTypeSize to getABITypeSize, getTypeStoreSize
or getTypeSizeInBits as appropriate in ScalarReplAggregates.
The right change to make was not always obvious, so it would
be good to have an sroa guru review this.  While there I noticed
some bugs, and fixed them: (1) arrays of x86 long double have
holes due to alignment padding, but this wasn't being spotted
by HasStructPadding (renamed to HasPadding).  The same goes
for arrays of oddly sized ints.  Vectors also suffer from this,
in fact the problem for vectors is much worse because basic
vector assumptions seem to be broken by vectors of type with
alignment padding.   I didn't try to fix any of these vector
problems.  (2) The code for extracting smaller integers from
larger ones (in the "int union" case) was wrong on big-endian
machines for integers with size not a multiple of 8, like i1.
Probably this is impossible to hit via llvm-gcc, but I fixed
it anyway while there and added a testcase.  I also got rid of
some trailing whitespace and changed a function name which
had an obvious typo in it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43672 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-04 14:43:57 +00:00
Duncan Sands
514ab348fd Executive summary: getTypeSize -> getTypeStoreSize / getABITypeSize.
The meaning of getTypeSize was not clear - clarifying it is important
now that we have x86 long double and arbitrary precision integers.
The issue with long double is that it requires 80 bits, and this is
not a multiple of its alignment.  This gives a primitive type for
which getTypeSize differed from getABITypeSize.  For arbitrary precision
integers it is even worse: there is the minimum number of bits needed to
hold the type (eg: 36 for an i36), the maximum number of bits that will
be overwriten when storing the type (40 bits for i36) and the ABI size
(i.e. the storage size rounded up to a multiple of the alignment; 64 bits
for i36).

This patch removes getTypeSize (not really - it is still there but
deprecated to allow for a gradual transition).  Instead there is:

(1) getTypeSizeInBits - a number of bits that suffices to hold all
values of the type.  For a primitive type, this is the minimum number
of bits.  For an i36 this is 36 bits.  For x86 long double it is 80.
This corresponds to gcc's TYPE_PRECISION.

(2) getTypeStoreSizeInBits - the maximum number of bits that is
written when storing the type (or read when reading it).  For an
i36 this is 40 bits, for an x86 long double it is 80 bits.  This
is the size alias analysis is interested in (getTypeStoreSize
returns the number of bytes).  There doesn't seem to be anything
corresponding to this in gcc.

(3) getABITypeSizeInBits - this is getTypeStoreSizeInBits rounded
up to a multiple of the alignment.  For an i36 this is 64, for an
x86 long double this is 96 or 128 depending on the OS.  This is the
spacing between consecutive elements when you form an array out of
this type (getABITypeSize returns the number of bytes).  This is
TYPE_SIZE in gcc.

Since successive elements in a SequentialType (arrays, pointers
and vectors) need to be aligned, the spacing between them will be
given by getABITypeSize.  This means that the size of an array
is the length times the getABITypeSize.  It also means that GEP
computations need to use getABITypeSize when computing offsets.
Furthermore, if an alloca allocates several elements at once then
these too need to be aligned, so the size of the alloca has to be
the number of elements multiplied by getABITypeSize.  Logically
speaking this doesn't have to be the case when allocating just
one element, but it is simpler to also use getABITypeSize in this
case.  So alloca's and mallocs should use getABITypeSize.  Finally,
since gcc's only notion of size is that given by getABITypeSize, if
you want to output assembler etc the same as gcc then getABITypeSize
is the size you want.

Since a store will overwrite no more than getTypeStoreSize bytes,
and a read will read no more than that many bytes, this is the
notion of size appropriate for alias analysis calculations.

In this patch I have corrected all type size uses except some of
those in ScalarReplAggregates, lib/Codegen, lib/Target (the hard
cases).  I will get around to auditing these too at some point,
but I could do with some help.

Finally, I made one change which I think wise but others might
consider pointless and suboptimal: in an unpacked struct the
amount of space allocated for a field is now given by the ABI
size rather than getTypeStoreSize.  I did this because every
other place that reserves memory for a type (eg: alloca) now
uses getABITypeSize, and I didn't want to make an exception
for unpacked structs, i.e. I did it to make things more uniform.
This only effects structs containing long doubles and arbitrary
precision integers.  If someone wants to pack these types more
tightly they can always use a packed struct.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43620 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-01 20:53:16 +00:00
Evan Cheng
3c3ddb3a85 Enable more fold (sext (load x)) -> (sext (truncate (sextload x)))
transformation. Previously, it's restricted by ensuring the number of load uses
is one. Now the restriction is loosened up by allowing setcc uses to be
"extended" (e.g. setcc x, c, eq -> setcc sext(x), sext(c), eq).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43465 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-29 19:58:20 +00:00
Evan Cheng
2bd122c4d9 Loosen up iv reuse to allow reuse of the same stride but a larger type when truncating from the larger type to smaller type is free.
e.g.
Turns this loop:
LBB1_1: # entry.bb_crit_edge
        xorl    %ecx, %ecx
        xorw    %dx, %dx
        movw    %dx, %si
LBB1_2: # bb
        movl    L_X$non_lazy_ptr, %edi
        movw    %si, (%edi)
        movl    L_Y$non_lazy_ptr, %edi
        movw    %dx, (%edi)
		addw    $4, %dx
		incw    %si
		incl    %ecx
		cmpl    %eax, %ecx
		jne     LBB1_2  # bb
	
into

LBB1_1: # entry.bb_crit_edge
        xorl    %ecx, %ecx
        xorw    %dx, %dx
LBB1_2: # bb
        movl    L_X$non_lazy_ptr, %esi
        movw    %cx, (%esi)
        movl    L_Y$non_lazy_ptr, %esi
        movw    %dx, (%esi)
        addw    $4, %dx
		incl    %ecx
        cmpl    %eax, %ecx
        jne     LBB1_2  # bb


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43375 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-26 01:56:11 +00:00
Evan Cheng
e11fb34381 isSubRegOf() is a dup of isSubRegister.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43249 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-23 06:51:50 +00:00
Evan Cheng
66f7163545 Local spiller optimization:
Turn a store folding instruction into a load folding instruction. e.g.
     xorl  %edi, %eax
     movl  %eax, -32(%ebp)
     movl  -36(%ebp), %eax
     orl   %eax, -32(%ebp)
=>
     xorl  %edi, %eax
     orl   -36(%ebp), %eax
     mov   %eax, -32(%ebp)
This enables the unfolding optimization for a subsequent instruction which will
also eliminate the newly introduced store instruction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43192 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-19 21:23:22 +00:00
Chris Lattner
1c4d492b94 rename ExpandOperation to ExpandOperationResult, as suggested
by Duncan


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43177 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-19 15:28:47 +00:00
Chris Lattner
f58dac3169 add a new target hook.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43165 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-19 03:31:45 +00:00
Evan Cheng
f0a0cddbcd - Added getOpcodeAfterMemoryUnfold(). It doesn't unfold an instruction, but only returns the opcode of the instruction post unfolding.
- Fix some copy+paste bugs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43153 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-18 22:40:57 +00:00
Evan Cheng
58184e6878 Use SmallVectorImpl instead of SmallVector with hardcoded size in MRegister public interface.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43150 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-18 21:29:24 +00:00
Gordon Henriksen
9bb4ea03be Missing 'public' keyword.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43121 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-18 11:31:21 +00:00
Gordon Henriksen
4b2b9402c5 Switching TargetMachineRegistry to use the new generic Registry.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43094 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-17 21:28:48 +00:00
Duncan Sands
f411b83c8c Return Expand from getOperationAction for all extended
types.  This is needed for SIGN_EXTEND_INREG at least.
It is not clear if this is correct for other operations.
On the other hand, for the various load/store actions
it seems to correct to return the type action, as is
currently done.
Also, it seems that SelectionDAG::getValueType can be
called for extended value types; introduce a map for
holding these, since we don't really want to extend
the vector to be 2^32 pointers long!
Generalize DAGTypeLegalizer::PromoteResult_TRUNCATE
and DAGTypeLegalizer::PromoteResult_INT_EXTEND to handle
the various funky possibilities that apints introduce,
for example that you can promote to a type that needs
to be expanded.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43071 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-17 13:49:58 +00:00
Duncan Sands
af47b11b95 Initial infrastructure for arbitrary precision integer
codegen support.  This should have no effect on codegen
for other types.  Debatable bits: (1) the use (abuse?)
of a set in SDNode::getValueTypeList; (2) the length of
getTypeToTransformTo, which maybe should be refactored
with a non-inline part for extended value types.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43030 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-16 09:56:48 +00:00
Chris Lattner
1622768794 Fix 80 col violation
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42976 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-15 05:30:27 +00:00
Evan Cheng
106e8020bd Change unfoldMemoryOperand(). User is now responsible for passing in the
register used by the unfolded instructions. User can also specify whether to
unfold the load, the store, or both.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42946 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-13 02:35:06 +00:00
Arnold Schwaighofer
48abc5cf6b Corrected many typing errors. And removed 'nest' parameter handling
for fastcc from X86CallingConv.td.  This means that nested functions
are not supported for calling convention 'fastcc'.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42934 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-12 21:30:57 +00:00
Arnold Schwaighofer
c85e1716f0 Added tail call optimization to the x86 back end. It can be
enabled by passing -tailcallopt to llc.  The optimization is
performed if the following conditions are satisfied:
* caller/callee are fastcc
* elf/pic is disabled OR
  elf/pic enabled + callee is in module + callee has
  visibility protected or hidden


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42870 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-11 19:40:01 +00:00
Bill Wendling
1c08eba3fb Fix 80-column violations
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42823 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-10 05:45:59 +00:00
Dan Gohman
cdf2b3b2f8 Add explicit keywords.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42747 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-08 15:08:41 +00:00
Evan Cheng
66f0f64082 - Added a few target hooks to generate load / store instructions from / to any
address (not just from / to frameindexes).
- Added target hooks to unfold load / store instructions / SDNodes into separate
load, data processing, store instructions / SDNodes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42621 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-05 01:32:41 +00:00
Dale Johannesen
3b5b4cd1a5 Add getABITypeSize, getABITypeSizeInBits
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42488 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-01 16:03:14 +00:00
Evan Cheng
e5f6204cd5 Enabling new condition code modeling scheme.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42459 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-29 00:00:36 +00:00
Dan Gohman
82482944ed TargetAsmInfo::getAddressSize() was incorrect for x86-64 and 64-bit targets
other than PPC64. Instead of fixing it, just remove it and fix all the
places that use it to use TargetData::getPointerSize() instead, as there
aren't very many. Most of the references were in DwarfWriter.cpp.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42419 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-27 23:12:31 +00:00
Evan Cheng
ff11026575 - Added MRegisterInfo::getCrossCopyRegClass() hook. For register classes where reg to reg copies are not possible, this returns another register class which registers in the specified register class can be copied to (and copy back from).
- X86 copyRegToReg() now supports copying between EFLAGS and GR32 / GR64 registers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42372 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-26 21:31:07 +00:00
Evan Cheng
9efce638d3 Allow copyRegToReg to emit cross register classes copies.
Tested with "make check"!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42346 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-26 06:25:56 +00:00
Evan Cheng
a3602685b3 New temporary option -new-cc-modeling-scheme to test the new cc modeling scheme.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42283 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-25 01:50:04 +00:00
Dan Gohman
72252732c8 Merge hasDotLoc and hasDotFile into hasDotLocAndDotFile since .loc and .file
aren't really usable without each other. 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42274 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-24 21:09:53 +00:00
Dale Johannesen
f1fc3a8fa6 Fix PR 1681. When X86 target uses +sse -sse2,
keep f32 in SSE registers and f64 in x87.  This
is effectively a new codegen mode.
Change addLegalFPImmediate to permit float and
double variants to do different things.
Adjust callers.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42246 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-23 14:52:20 +00:00
Evan Cheng
a3ca3149f2 Add CopyCost to TargetRegisterClass. This specifies the cost of copying a value
between two registers in the specific class.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42123 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-19 01:35:01 +00:00
Evan Cheng
ffddf97e5d Added getNumDefs().
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41901 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-13 00:16:29 +00:00
Bill Wendling
4e319a30ba Add accessor method.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41854 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-11 17:24:38 +00:00
Bill Wendling
ef4a661725 Add a bool to indicate if we should set the "indirect encoding" bit in the Dwarf
information for EH.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41852 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-11 17:20:55 +00:00
Bill Wendling
d60da495cd The personality function on Darwin needs a global stub. We then refer to
that global stub instead of doing the ".set" thingy we were doing before.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41838 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-11 08:27:17 +00:00
Rafael Espindola
588af2fb99 Add support for having different alignment for objects on call frames.
The x86-64 ABI states that objects passed on the stack have
8 byte alignment. Implement that.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41768 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-07 14:52:14 +00:00
Owen Anderson
718cb665ca Add lengthof and endof templates that hide a lot of sizeof computations.
Patch by Sterling Stein!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41758 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-07 04:06:50 +00:00
Evan Cheng
35b35c5c32 Add a variant of foldMemoryOperand to fold any load / store, not just load / store from / to stack slots.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41597 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-30 05:52:20 +00:00
Dale Johannesen
f04afdbb48 Change LegalFPImmediates to use APFloat.
Add APFloat interfaces to ConstantFP, SelectionDAG.
Fix integer bit in double->APFloat conversion.
Convert LegalizeDAG to use APFloat interface in
ConstantFPSDNode uses.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41587 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-30 00:23:21 +00:00
Dan Gohman
81975f6dfd Add explicit keywords and remove spurious trailing semicolons.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41482 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-27 14:50:10 +00:00
Chris Lattner
48884cd80b rename isOperandValidForConstraint to LowerAsmOperandForConstraint,
changing the interface to allow for future changes.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41384 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-25 00:47:38 +00:00
Rafael Espindola
21485be444 Partial implementation of calling functions with byval arguments:
*) The needed information is propagated to the DAG
 *) The X86-64 backend detects it and aborts


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41179 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-20 15:18:24 +00:00
Reid Spencer
276222a5ae Change casts from old style to new style. This helps document the details
better, gives the compiler a chance to validate the cast and reduces warnings
if the user turns on -Wold-style-cast option.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41033 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-12 08:12:35 +00:00
Christopher Lamb
8b165731bc Move isSubRegOf into MRegisterInfo. Fix a missed move elimination in LowerSubregs and add more debugging output there.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41005 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-10 21:11:55 +00:00
Dale Johannesen
ab081c7195 Update per review comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40965 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-09 17:27:48 +00:00
Dale Johannesen
5411a3937f long double 9 of N. This finishes up the X86-32 bits
(constants are still not handled).  Adds ConvertActions
to control fp-to-fp conversions (these are currently
defaulted for all other targets, so no changes there).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40958 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-09 01:04:01 +00:00
Reid Spencer
181b6c9cb5 Fix minor doxygen nits.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40854 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-05 20:06:04 +00:00
Evan Cheng
b5910820ce Added TargetInstrDescriptor::numDefs - num of results.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40709 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-02 00:20:17 +00:00
Dan Gohman
c2bbfc18e9 More explicit keywords.
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2007-08-01 15:32:29 +00:00
Dan Gohman
06dd2a68e1 Fix the comments for the 'fast' parameter in addPassesToEmitFile.
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2007-07-30 15:04:59 +00:00
Dan Gohman
fb71d38247 Fix the comment for getClosestTargetForJIT to reflect the fact that
it does not have a Module parameter.


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2007-07-30 14:58:59 +00:00
Dan Gohman
f452207d20 More explicit keywords.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40589 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-30 14:51:59 +00:00
Duncan Sands
36397f5034 Support for trampolines, except for X86 codegen which is
still under discussion.


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2007-07-27 12:58:54 +00:00
Christopher Lamb
1367fd09cb Have register info provide the inverse mapping of register->superregisters. PR1350
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40519 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-26 08:01:58 +00:00
Christopher Lamb
08d52071ba Add target independent MachineInstr's to represent subreg insert/extract in MBB's. PR1350
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40518 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-26 07:48:21 +00:00
Evan Cheng
8bd6035750 Added -print-emitted-asm to print out JIT generated asm to cerr.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40123 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-20 21:56:13 +00:00
Dan Gohman
07a96765da Fix comments about vectors to use the current wording.
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2007-07-16 14:29:03 +00:00
Anton Korobeynikov
2365f51ed0 Long live the exception handling!
This patch fills the last necessary bits to enable exceptions
handling in LLVM. Currently only on x86-32/linux.

In fact, this patch adds necessary intrinsics (and their lowering) which
represent really weird target-specific gcc builtins used inside unwinder.

After corresponding llvm-gcc patch will land (easy) exceptions should be
more or less workable. However, exceptions handling support should not be 
thought as 'finished': I expect many small and not so small glitches
everywhere.


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2007-07-14 14:06:15 +00:00
Evan Cheng
ed80ef6089 Add OptionalDefOperand. Remove clobbersPred. Also add DefinesPredicate to be used by if-converter.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38499 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-10 18:06:29 +00:00
Dan Gohman
2c8c3e2e31 Fix a typo in a comment.
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2007-07-09 15:15:24 +00:00
Dan Gohman
d8ebb3a0c2 Remove redundant declarations.
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2007-07-06 13:59:28 +00:00
Dan Gohman
b6f5b00c3b Add new TargetLowering code to provide the final register type that an
illegal value type will be transformed to, for code that needs the
register type after all transformations instead of just after the first
transformation.

Factor out the code that uses this information to do copy-from-regs and
copy-to-regs for various purposes into separate functions so that they
are done consistently.


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2007-06-28 23:29:44 +00:00
Dan Gohman
6595cb3000 Rename ("shrinkify") MVT::isExtendedValueType to MVT::isExtendedVT.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37758 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-27 16:08:04 +00:00
Evan Cheng
c33aa47130 Add comment.
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2007-06-26 21:19:07 +00:00
Evan Cheng
c4f2fe0694 Add immediate sub-registers.
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2007-06-26 20:59:16 +00:00
Dan Gohman
4d2a0f5bd6 Replace ?: with if statements, for clarity.
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2007-06-26 16:19:08 +00:00
Dan Gohman
71d7794856 Simplify the expression for TargetLowering::isTypeLegal.
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2007-06-26 15:16:27 +00:00
Dan Gohman
d45eddd214 Revert the earlier change that removed the M_REMATERIALIZABLE machine
instruction flag, and use the flag along with a virtual member function
hook for targets to override if there are instructions that are only
trivially rematerializable with specific operands (i.e. constant pool
loads).


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2007-06-26 00:48:07 +00:00
Dan Gohman
7f32156bb9 Generalize MVT::ValueType and associated functions to be able to represent
extended vector types. Remove the special SDNode opcodes used for pre-legalize
vector operations, and the special MVT::Vector type used with them. Adjust
lowering and legalize to work with the normal SDNode kinds instead, and to
use the normal MVT functions to work with vector types instead of using the
two special operands that the pre-legalize nodes held.

This allows pre-legalize and post-legalize DAGs, and the code that operates
on them, to be more consistent. Pre-legalize vector operators can be handled
more consistently with scalar operators. And, -view-dag-combine1-dags and
-view-legalize-dags now look prettier for vector code.


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2007-06-25 16:23:39 +00:00
Dan Gohman
ea859be53c Move ComputeMaskedBits, MaskedValueIsZero, and ComputeNumSignBits from
TargetLowering to SelectionDAG so that they have more convenient
access to the current DAG, in preparation for the ValueType routines
being changed from standalone functions to members of SelectionDAG for
the pre-legalize vector type changes.


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2007-06-22 14:59:07 +00:00
Dan Gohman
b9f1019696 Rename TargetLowering::getNumElements and friends to
TargetLowering::getNumRegisters and similar, to avoid confusion with
the actual number of elements for vector types.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37687 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-21 14:42:22 +00:00
Dan Gohman
82a87a0172 Replace M_REMATERIALIZIBLE and the newly-added isOtherReMaterializableLoad
with a general target hook to identify rematerializable instructions. Some
instructions are only rematerializable with specific operands, such as loads
from constant pools, while others are always rematerializable. This hook
allows both to be identified as being rematerializable with the same
mechanism.


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2007-06-19 01:48:05 +00:00
Evan Cheng
4e6b1e1d99 Replace CanBeDuplicated() with a M_NOT_DUPLICABLE bit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37642 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-19 01:21:41 +00:00
Evan Cheng
61a2598ebe Added CanBeDuplicated(). It returns true if an instruction can be safely duplicated (e.g. during ifcvt).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37605 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-15 21:13:54 +00:00
Dale Johannesen
318093b6f8 Do not treat FP_REG_KILL as terminator in branch analysis (X86).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37578 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-14 22:03:45 +00:00
Dan Gohman
c101e95cb6 Add a target hook to allow loads from constant pools to be rematerialized, and an
implementation for x86.


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2007-06-14 20:50:44 +00:00
Dan Gohman
af67ea7318 Eliminate some redundant newlines in asm output.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37574 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-14 15:00:27 +00:00
Christopher Lamb
a321125e8b Add support to tablegen for specifying subregister classes on a per register class basis.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37572 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-13 22:20:15 +00:00
Evan Cheng
bfd2ec4a8e Add a utility routine to check for unpredicated terminator instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37528 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-08 21:59:56 +00:00
Evan Cheng
f94ab6a662 Add a machine instruction flag indicating the instruction can clobber condition code / register(s) used to predicate instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37464 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-06 10:13:55 +00:00
Evan Cheng
59aefd15e5 Target specific ifcvt code duplication limit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37384 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-01 08:25:24 +00:00
Dale Johannesen
95ef406e0f Make stable_sort in tail merging actually be stable (it never was, but didn't
matter until my last change).  Reenable tail merging by default.


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2007-05-29 23:47:50 +00:00
Evan Cheng
f277ee4be7 Add missing const qualifiers.
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2007-05-29 18:35:22 +00:00
Devang Patel
a8d5381209 Disable Tail Merging for now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37329 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-25 01:00:24 +00:00
Evan Cheng
4f85cd7704 Add a couple of target hooks for predication.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37306 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-23 07:19:12 +00:00
Dale Johannesen
e6e435498c name change requested by review of previous patch
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2007-05-22 18:31:04 +00:00
Dale Johannesen
81da02b553 Make tail merging the default, except on powerPC. There was no prior art
for a target-dependent default with a command-line override; this way
should be generally usable.


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2007-05-22 17:14:46 +00:00
Evan Cheng
d46a8ea5d5 Consistency.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37274 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-22 01:21:58 +00:00
Evan Cheng
b5cdaa257e RemoveBranch() and InsertBranch() now returns number of instructions deleted / inserted.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37192 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-18 00:05:48 +00:00
Evan Cheng
f48ae4630b Fix comment.
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2007-05-18 00:00:30 +00:00
Evan Cheng
d9e9efb253 Remove. Not needed.
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2007-05-17 00:11:35 +00:00
Evan Cheng
d60483ef99 Add target hook to specify block size limit for if-conversion.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37134 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-16 23:45:53 +00:00
Evan Cheng
02c602b333 PredicateInstruction returns true if the operation was successful.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37124 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-16 21:53:07 +00:00
Evan Cheng
1bccb49082 Rename M_PREDICATED to M_PREDICABLE; Move TargetInstrInfo::isPredicatable() to MachineInstr::isPredicable().
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37115 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-16 20:43:42 +00:00
Evan Cheng
6c1d2b90e3 Fix comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37096 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-16 05:09:34 +00:00
Evan Cheng
0402e170e8 Add TargetInstrInfo predication hooks.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37091 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-16 01:58:56 +00:00
Evan Cheng
5de723c118 All operands that made up of the predicate operands are maked M_PREDICATE_OPERAND.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37062 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-15 01:21:27 +00:00
Nick Lewycky
ecd94c804a Fix typo in comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36873 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-06 13:37:16 +00:00
Anton Korobeynikov
2a07e2f4df Emit sections/directives in the proper order. This fixes PR1376. Also,
some small cleanup was made.


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2007-05-05 09:04:50 +00:00
Bill Wendling
4222d806fa Add an "implies" field to features. This indicates that, if the current
feature is set, then the features in the implied list should be set also.
The opposite is also enforced: if a feature in the implied list isn't set,
then the feature that owns that implies list shouldn't be set either.


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2007-05-04 20:38:40 +00:00
Devang Patel
1997473cf7 Drop 'const'
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36662 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-03 01:11:54 +00:00
Chris Lattner
aa4f1e164b Add a new option.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36657 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-03 00:16:07 +00:00
Devang Patel
3e15bf33e0 Use 'static const char' instead of 'static const int'.
Due to darwin gcc bug, one version of darwin linker coalesces
static const int, which defauts PassID based pass identification.


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2007-05-02 21:39:20 +00:00
Anton Korobeynikov
79dda2b048 Fix couple of bugs connected with eh info:
1. Correct output offsets on Linux
2. Fix "style" of personality function. It shouldn't be indirect.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36633 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-01 22:23:12 +00:00
Devang Patel
794fd75c67 Do not use typeinfo to identify pass in pass manager.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36632 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-01 21:15:47 +00:00
Evan Cheng
18b111bffe Add SPAdj parameter to account for call frame setup SP adjustment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36623 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-01 08:58:27 +00:00
Nate Begeman
7bf1c272ab llvm bug #1350, parts 1, 2, and 3.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36618 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-01 05:57:02 +00:00
Evan Cheng
14f1dd120f Added hook hasReservedCallFrame(). It returns true if the call frame is
included as part of the stack frame.


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2007-05-01 00:47:46 +00:00
Dale Johannesen
8650199fbb Make ARM-specific version of getInlineAsmLength
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36572 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-29 19:17:45 +00:00
Anton Korobeynikov
6f9896fcc8 Implement protected visibility. This partly implements PR1363. Linker
should be taught to deal with protected symbols.


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2007-04-29 18:35:00 +00:00
Chris Lattner
4c27344bfd add a default parameter
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36529 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-28 05:42:38 +00:00
Dan Gohman
edc1d15984 Fix a typo in a comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36485 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-26 19:40:56 +00:00
Evan Cheng
b2f2e64c07 Test if a register is sub- or super-register of another.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36433 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-25 07:24:50 +00:00
Evan Cheng
50aadb9693 Add super-register set.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36295 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-21 00:54:06 +00:00
Lauro Ramos Venancio
b3a0417cad Implement "general dynamic", "initial exec" and "local exec" TLS models for
X86 32 bits.


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2007-04-20 21:38:10 +00:00
Evan Cheng
e3e31c22bf Add sub-registers set accessor.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36282 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-20 21:28:05 +00:00
Evan Cheng
a92d62c15f Add sub-register sets.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36277 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-20 21:11:22 +00:00
Evan Cheng
eff03db46d Change getAllocatableSet() so it returns allocatable registers for a specific register class.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36215 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-17 20:23:34 +00:00
Anton Korobeynikov
bed2946a96 Removed tabs everywhere except autogenerated & external files. Add make
target for tabs checking.


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2007-04-16 18:10:23 +00:00
Chris Lattner
2b95fd67da remove dead target hooks.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35847 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-09 23:34:08 +00:00
Chris Lattner
b445d0cbb9 remove some dead target hooks, subsumed by isLegalAddressingMode
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35840 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-09 22:27:04 +00:00