Commit Graph

41469 Commits

Author SHA1 Message Date
Devang Patel f405b5e532 80 cols
llvm-svn: 56521
2008-09-23 23:32:15 +00:00
Devang Patel a987d3e3fb s/ParameterAttributes/Attributes/g
llvm-svn: 56520
2008-09-23 23:25:44 +00:00
Devang Patel 21d4e4e783 Remove tabs.
llvm-svn: 56515
2008-09-23 23:18:26 +00:00
Devang Patel ba3fa6c6e1 s/ParameterAttributes/Attributes/g
llvm-svn: 56513
2008-09-23 23:03:40 +00:00
Devang Patel 82fed6702b Use parameter attribute store (soon to be renamed) for
Function Notes also. Function notes are stored at index ~0.

llvm-svn: 56511
2008-09-23 22:35:17 +00:00
Dan Gohman 676145f02d Now that DeadMachineInstructionElim is basically working
correctly, it's not necessary to explicitly remove registers
from their use-def lists.

llvm-svn: 56509
2008-09-23 22:04:18 +00:00
Dan Gohman 918fe08a56 Arrange for FastISel code to have access to the MachineModuleInfo
object. This will be needed to support debug info.

llvm-svn: 56508
2008-09-23 21:53:34 +00:00
Dan Gohman 269999cb03 Track local physical register liveness. This is not the most
efficient implementation possible, but it's pretty simple and
good enough for the time being.

llvm-svn: 56504
2008-09-23 21:40:44 +00:00
Chris Lattner 4f6646780e regenerate
llvm-svn: 56502
2008-09-23 21:18:31 +00:00
Chris Lattner 7f0a77f11d allow inreg on the result of a function
llvm-svn: 56501
2008-09-23 21:18:08 +00:00
Dan Gohman c07f686665 Replace the LiveRegs SmallSet with a simple counter that keeps
track of the number of live registers, which is all the set was
being used for.

llvm-svn: 56498
2008-09-23 18:50:48 +00:00
Dan Gohman ed1cf1a8f1 Fix these enums' starting values to reflect the way that
instruction opcodes are now numbered. No functionality change.

llvm-svn: 56497
2008-09-23 18:42:32 +00:00
Dan Gohman 4eb9956940 Update the comment to reflect the new name.
llvm-svn: 56496
2008-09-23 18:27:53 +00:00
Dan Gohman e64c9944f6 Delete an unused function.
llvm-svn: 56495
2008-09-23 18:26:47 +00:00
Dan Gohman 2430073657 Move the code for initializing the global base reg out of
X86ISelDAGToDAG.cpp and into X86InstrInfo.cpp. This will allow
it to be reused by FastISel.

llvm-svn: 56494
2008-09-23 18:22:58 +00:00
Duncan Sands 9c40c28926 Rationalize the names of passes that print information:
-callgraph => print-callgraph
    -callscc   => print-callgraph-sccs
    -cfgscc    => print-cfg-sccs
    -externalfnconstants => print-externalfnconstants
    -print               => print-function
    -print-alias-sets (no change)
    -print-callgraph     => dot-callgraph
    -print-cfg           => dot-cfg
    -print-cfg-only      => dot-cfg-only
    -print-dom-info (no change)
    -printm              => print-module
    -printusedtypes      => print-used-types

llvm-svn: 56487
2008-09-23 12:47:39 +00:00
Matthijs Kooijman bdb215d338 Fix indendation.
llvm-svn: 56486
2008-09-23 08:54:41 +00:00
Owen Anderson 4cdc18ad80 Add initial support for inserting last minute copies.
llvm-svn: 56485
2008-09-23 04:37:10 +00:00
Evan Cheng 9e9426cb82 Support x86 specific inline asm modifier 'J'.
llvm-svn: 56483
2008-09-22 23:57:37 +00:00
Dale Johannesen a0e1876584 Remove silly semicolon.
llvm-svn: 56481
2008-09-22 23:28:18 +00:00
Dan Gohman e2947e1e07 Fix the alignment of loads from constant pool entries when the
load address has an offset from the base of the constant pool
entry.

llvm-svn: 56479
2008-09-22 22:40:08 +00:00
Dale Johannesen 8f8466dc42 Remove a compiler warning.
llvm-svn: 56478
2008-09-22 22:33:34 +00:00
Devang Patel 329fe728b5 Add hasNote() to check note associated with a function.
llvm-svn: 56477
2008-09-22 22:32:29 +00:00
Evan Cheng bab5988017 Livestacks really does preserve everything.
llvm-svn: 56476
2008-09-22 22:26:15 +00:00
Evan Cheng 962c2cf17a Instead of setPreservesAll, just mark them preseving machine loop info and machine dominators.
llvm-svn: 56475
2008-09-22 22:21:38 +00:00
Evan Cheng 3276416fa4 Test case for fp logical instructions.
llvm-svn: 56474
2008-09-22 22:19:34 +00:00
Owen Anderson 97364655dc Significant improvements to the logic for merging live intervals. This code can't
just use LI::MergeValueAsValue, as its behavior in the presence of overlapping ranges
isn't what StrongPHIElimination wants.

llvm-svn: 56472
2008-09-22 21:58:58 +00:00
Dale Johannesen 7a74e71489 Make log, log2, log10, exp, exp2 use Expand by
default.

llvm-svn: 56471
2008-09-22 21:57:32 +00:00
Evan Cheng 168f8f3916 Mark several codegen passes as preserving all analysis.
llvm-svn: 56469
2008-09-22 20:58:04 +00:00
Dale Johannesen f1acc4d610 More refactoring. Yawn.
llvm-svn: 56468
2008-09-22 20:51:30 +00:00
Mikhail Glushenkov 446c5dcf57 Convert llvmc2 plugins to use llvm/Support/Registry.h machinery.
llvm-svn: 56467
2008-09-22 20:51:19 +00:00
Mikhail Glushenkov 53aa586844 Move llvmc2 header files under include/llvm/CompilerDriver
llvm-svn: 56466
2008-09-22 20:50:40 +00:00
Mikhail Glushenkov 47afe73081 Plugin support for llvmc2 (a-la opt).
llvm-svn: 56465
2008-09-22 20:49:34 +00:00
Mikhail Glushenkov 6f1db3df74 Add a 'Debugging' section to the documentation.
llvm-svn: 56464
2008-09-22 20:48:48 +00:00
Mikhail Glushenkov 4825a0bb2f Make comments a little bit more clear.
llvm-svn: 56463
2008-09-22 20:48:22 +00:00
Mikhail Glushenkov 8a2bdc74b2 Get rid of GlobalLanguageMap. Global state is evil.
llvm-svn: 56462
2008-09-22 20:47:46 +00:00
Mikhail Glushenkov 632d982a7f Rename our version of ccc to ccc2
llvm-svn: 56461
2008-09-22 20:47:09 +00:00
Mikhail Glushenkov 1c4e084bd2 Fix some comments
llvm-svn: 56460
2008-09-22 20:46:44 +00:00
Mikhail Glushenkov 9c13f724fc Add a (forward_as) option property
llvm-svn: 56459
2008-09-22 20:46:19 +00:00
Mikhail Glushenkov b50080e6cb Delete the file llvmc2/doc/LLVMC-Enhancements.rst + some minor language/spelling fixes.
llvm-svn: 56458
2008-09-22 20:45:17 +00:00
Dale Johannesen 7beddb8680 Refactor FP intrinisic setup. Per review feedback.
llvm-svn: 56456
2008-09-22 19:51:58 +00:00
Oscar Fuentes 8807bddf08 CMake build system: support for parallel builds.
llvm-svn: 56453
2008-09-22 18:21:51 +00:00
Evan Cheng 13beeeb128 Per review feedback: Only perform
(srl x, (trunc (and y, c))) -> (srl x, (and (trunc y), c))
etc. when both "trunc" and "and" have single uses.

llvm-svn: 56452
2008-09-22 18:19:24 +00:00
Arnold Schwaighofer 796a271c5f Change the calling convention used when tail call optimization is enabled from CC_X86_32_TailCall to CC_X86_32_FastCC.
llvm-svn: 56436
2008-09-22 14:50:07 +00:00
Rafael Espindola 73a5406d24 Add bound checks in SmallVector
llvm-svn: 56432
2008-09-22 10:06:26 +00:00
Oscar Fuentes f3d3a0dfca add_partially_linked_object: Replaced nonexistent MESSAGE option in
add_custom_command with COMMENT. It was forcing unconditional command
execution.

llvm-svn: 56425
2008-09-22 02:33:43 +00:00
Oscar Fuentes a229b3c9a7 Initial support for the CMake build system.
llvm-svn: 56419
2008-09-22 01:08:49 +00:00
Bill Wendling 91ef8fcd29 Add helper function to get a 32-bit floating point constant. No functionality change.
llvm-svn: 56418
2008-09-22 00:44:35 +00:00
Chris Lattner 4d7445b3a4 explain what earlyclobber actually is.
llvm-svn: 56415
2008-09-21 23:30:17 +00:00
Chris Lattner f1280cf744 Fold immediates into X86 shifts with fast isel. This generates:
sarl    $3, %ecx

instead of:

movl    $3, %ecx
sarl    %cl, %edx

This shrinks fast isel 176.gcc by about 2000 instructions (.3%)

llvm-svn: 56413
2008-09-21 21:44:29 +00:00
Dan Gohman ae9d9f4d3f Factor out code into HandleVirtRegDef, for consistency with
Handle{Virt,Phys}Reg{Def,Use}. Remove a redundant check
for register zero, and redundant checks for isPhysicalRegister.

llvm-svn: 56412
2008-09-21 21:11:41 +00:00
Dan Gohman dfc19e6c01 Instead of building a list and sorting it just to find a maximum element,
compute the maximum element directly.

llvm-svn: 56411
2008-09-21 21:01:49 +00:00
Owen Anderson df8f1cb995 Fetch the starting index of the block when assigning intervals. This gets live-in indices
correct in the presence of things like EH labels.

llvm-svn: 56410
2008-09-21 20:43:24 +00:00
Chris Lattner 43f5449c48 don't print GlobalAddressSDNode's with an offset of zero as "foo0".
llvm-svn: 56399
2008-09-21 18:38:31 +00:00
Chris Lattner 9a8eb0d534 add a note
llvm-svn: 56391
2008-09-20 19:17:53 +00:00
Cedric Venet b0f876d55d Update VS projects.
Change some class to struct for coherency.

llvm-svn: 56389
2008-09-20 18:02:18 +00:00
Dale Johannesen c16067c3df Shorten and rearrange data fields to save a word of memory.
Per review feedback.

llvm-svn: 56388
2008-09-20 17:45:21 +00:00
Duncan Sands e1dc84be64 Implement review feedback from Devang: make use
of mayReadFromMemory and mayWriteToMemory.

llvm-svn: 56387
2008-09-20 16:45:58 +00:00
Dale Johannesen 9af7b3daec Teach coalescer about earlyclobber bits.
Check bits for preferred register.

llvm-svn: 56384
2008-09-20 02:03:04 +00:00
Evan Cheng c042000649 Fix PR2808. When regalloc runs out of register, it spill a physical register around the live interval being allocated. Do not continue to try to spill another register, just grab the physical register and move on.
llvm-svn: 56381
2008-09-20 01:28:05 +00:00
Evan Cheng 65502487b7 Clean up the test.
llvm-svn: 56380
2008-09-20 01:26:27 +00:00
Evan Cheng 4730522235 No need to print function stubs for Mac OS X 10.5 and up. Linker will handle it.
llvm-svn: 56378
2008-09-20 00:13:45 +00:00
Evan Cheng 9d917beba6 80 column violation.
llvm-svn: 56377
2008-09-20 00:13:08 +00:00
Dan Gohman 098786e9f7 Fix a FastISel GlobalVariable CSE bug.
llvm-svn: 56376
2008-09-19 23:42:04 +00:00
Evan Cheng 29e4c9192d Continue after removing the current MI.
llvm-svn: 56372
2008-09-19 22:49:39 +00:00
Dan Gohman 9801ba451a Refactor X86SelectConstAddr, folding it into X86SelectAddress. This
results in better code for globals. Also, unbreak the local CSE for
GlobalValue stub loads.

llvm-svn: 56371
2008-09-19 22:16:54 +00:00
Dale Johannesen 436aae627d Make earlyclobber stuff work when virtual regs
have previously been assigned conflicting physreg.

llvm-svn: 56364
2008-09-19 18:52:31 +00:00
Bill Wendling 0e2119213b Prevent warning about conversion from 64-bit to 32-bit by (yuck) casting...
llvm-svn: 56359
2008-09-19 18:34:40 +00:00
Dan Gohman 83ee17cdb1 Now that ConstantSDNode doesn't hold an APInt,
use ARG_FLAGSSDNode as the most aligned node type,
as it contains an int64_t, which is 8-byte
aligned on mingw.

llvm-svn: 56358
2008-09-19 18:09:19 +00:00
Ted Kremenek 36d4cbc382 Added static methods to APSInt: getMinValue and getMaxValue.
llvm-svn: 56355
2008-09-19 18:01:14 +00:00
Evan Cheng 4c0197043c Re-materalized definition instructions may be dead. Whack them.
llvm-svn: 56352
2008-09-19 17:38:47 +00:00
Gabor Greif 715b9d2403 backing out my last commit, it was not intended to go on the trunk
llvm-svn: 56349
2008-09-19 15:13:20 +00:00
Gabor Greif 92f17070e7 first shot at removing Use::Val
untested, Use::swap() is definitely not done yet

llvm-svn: 56348
2008-09-19 15:03:57 +00:00
Duncan Sands 5408dfd3b8 Turn on the AddReadAttrs pass.
llvm-svn: 56345
2008-09-19 14:34:36 +00:00
Duncan Sands 5a896a9858 Add test for improvement of readonly to readnone,
and non-demotion of readnone to readonly.

llvm-svn: 56344
2008-09-19 09:20:05 +00:00
Duncan Sands 310dbffdc0 Turn on these tests!
llvm-svn: 56343
2008-09-19 09:16:32 +00:00
Duncan Sands 310077034a Remove the MarkModRef pass (use AddReadAttrs instead).
Unfortunately this means removing one regression test
of GlobalsModRef because I couldn't work out how to
perform it without MarkModRef.

llvm-svn: 56342
2008-09-19 08:23:44 +00:00
Duncan Sands af25ee7ffc Add a new pass AddReadAttrs which works out which functions
can get the readnone/readonly attributes, and gives them it.
The plan is to remove markmodref (which did the same thing
by querying GlobalsModRef) and delete the analogous
functionality from GlobalsModRef.

llvm-svn: 56341
2008-09-19 08:17:05 +00:00
Duncan Sands a75815ebb0 Test the callgraph directly for the missing edge.
llvm-svn: 56338
2008-09-19 08:01:57 +00:00
Duncan Sands 938e8f60d6 Teach -callgraph to always print the callgraph (as the
description says it does), not just when -analyze is
used as well.  This means printing to stderr, so adjust
some tests.

llvm-svn: 56337
2008-09-19 07:57:09 +00:00
Dale Johannesen e519bd4183 Remove AsmThatEarlyClobber etc. from LiveIntervalAnalysis
and redo as linked list walk.  Logic moved into RA.
Per review feedback.

llvm-svn: 56326
2008-09-19 01:02:35 +00:00
Devang Patel c25be3b2de splitLoop does not handle split condition EQ.
Fixes PR 2805

llvm-svn: 56321
2008-09-18 23:45:14 +00:00
Dan Gohman 6e005fdc8d Address-mode folding for X86FastISel. It's pretty basic, but it
catches a fair number of common cases. Note that this currently
causes Fast-ISel to leave behind lots of dead instructions.
Those will be dealt with in subsequent commits.

llvm-svn: 56320
2008-09-18 23:23:44 +00:00
Bill Wendling a00fa322b1 Decrementing the iterator here could be wrong if the worklist is empty after the "erase".
Thanks to Ji Young Park for the patch!

llvm-svn: 56316
2008-09-18 23:04:18 +00:00
Devang Patel 76b22c1420 Try to place hoisted instructions befoe icmp instruction.
llvm-svn: 56315
2008-09-18 22:50:42 +00:00
Evan Cheng 3d9416cf24 Somehow RegAllocLinearScan is keeping two pointers to MachineRegisterInfo.
llvm-svn: 56314
2008-09-18 22:38:47 +00:00
Dan Gohman e91edeb61c Simplify this code. The FastISel class has its own TD member.
llvm-svn: 56311
2008-09-18 18:26:43 +00:00
Dan Gohman f3d647e00b Don't consider instructions with implicit physical register
defs to be necessarily live.

llvm-svn: 56310
2008-09-18 18:22:32 +00:00
Tanya Lattner 1fd58f738b Upgrade doxygen.
llvm-svn: 56308
2008-09-18 16:32:28 +00:00
Dan Gohman 95be7d7b85 Add a new "fast" scheduler. This is currently basically just a
copy of the BURRList scheduler, but with several parts ripped
out, such as backtracking, online topological sort maintenance
(needed by backtracking), the priority queue, and Sethi-Ullman
number computation and maintenance (needed by the priority
queue). As a result of all this, it generates somewhat lower
quality code, but that's its tradeoff for running about 30%
faster than list-burr in -fast mode in many cases.

This is somewhat experimental. Moving forward, major pieces of
this can be refactored with pieces in common with
ScheduleDAGRRList.cpp.

llvm-svn: 56307
2008-09-18 16:26:26 +00:00
Evan Cheng 5cc53c34c3 Preliminary support for systems which require changing JIT memory regions privilege from read / write to read / executable.
llvm-svn: 56303
2008-09-18 07:54:21 +00:00
Evan Cheng 933b392f65 Duh. Default to ARMCC::AL (always).
llvm-svn: 56301
2008-09-18 07:28:19 +00:00
Evan Cheng 5e3ac187d9 Clean up.
llvm-svn: 56300
2008-09-18 07:27:23 +00:00
Evan Cheng bc0d0eccf3 Cosmetic.
llvm-svn: 56299
2008-09-18 07:24:33 +00:00
Dan Gohman af13bf1ebd FastISel: For calls, prefer using the callee's address as a constant
over having it in a register. And wait until after checking type
legality before requesting that the callee address be placed in a
register. Also, fix support for calls with void return type.

This speeds up fast-isel isel time by about 15% and reduces
instruction counts by about 3% overall on certain testcases. It also
changes many indirect calls to direct calls.

llvm-svn: 56292
2008-09-17 21:18:49 +00:00
Dale Johannesen f8610ebebc Add a bit to mark operands of asm's that conflict
with an earlyclobber operand elsewhere.  Propagate
this bit and the earlyclobber bit through SDISel.
Change linear-scan RA not to allocate regs in a way 
that conflicts with an earlyclobber.  See also comments.

llvm-svn: 56290
2008-09-17 21:13:11 +00:00
Evan Cheng f3fcd7a464 Unallocatable registers do not have live intervals.
llvm-svn: 56287
2008-09-17 18:36:25 +00:00
Devang Patel 7f9671ba37 Do not hoist instruction above branch condition. The instruction may use branch condition.
llvm-svn: 56286
2008-09-17 18:21:49 +00:00
Devang Patel dca8d3b183 Do not ignore iv uses outside the loop.
This one slipped through cracks very well.

llvm-svn: 56284
2008-09-17 17:53:47 +00:00
Devang Patel 7293f0f344 Fix comments, help messages.
llvm-svn: 56282
2008-09-17 16:01:39 +00:00
Dan Gohman 6ab52a8018 Don't worry about clobbering physical register defs that aren't used.
llvm-svn: 56281
2008-09-17 15:25:49 +00:00
Evan Cheng 7848cfcd77 Fix addrmode1 instruction encodings; fix bx_ret encoding.
llvm-svn: 56277
2008-09-17 07:53:38 +00:00
Evan Cheng 937569afe3 Specify instruction encoding using range list to avoid endianess issues.
llvm-svn: 56276
2008-09-17 07:16:21 +00:00
Evan Cheng 038ca4aa0f Add instruction names as comments to InstBits entries.
llvm-svn: 56275
2008-09-17 06:29:52 +00:00
Dan Gohman 173aa8602d Simplify and generalize X86DAGToDAGISel::CanBeFoldedBy, and draw
up some new ascii art to illustrate what it does. This change
currently has no effect on generated code.

llvm-svn: 56270
2008-09-17 01:39:10 +00:00
Dan Gohman c24cd015a7 Add a new MachineInstr-level DCE pass. It is very simple, and is intended to
be used with fast-isel.

llvm-svn: 56268
2008-09-17 00:43:24 +00:00
Bill Wendling 95e1af217f Add trampoline support to PPC. GCC simply calls the "__trampoline_setup"
function with appropriate parameters. This allows us to support blocks on PPC.

llvm-svn: 56267
2008-09-17 00:30:57 +00:00
Devang Patel 11b862aed5 Fix cut-n-pasto.
llvm-svn: 56265
2008-09-17 00:01:04 +00:00
Evan Cheng a904f466e8 When converting a CopyFromReg to a copy instruction, use the register class of its uses to determine the right destination register class of the copy. This is important for targets where a physical register may belong to multiple register classes.
llvm-svn: 56258
2008-09-16 23:12:11 +00:00
Devang Patel 3fccede02a Remove.
llvm-svn: 56256
2008-09-16 22:26:44 +00:00
Devang Patel 9966ccffb4 Add -O1, -O2 and -O3 that matches llvm-gcc's -O1, -O2 and -O3 respectively.
llvm-svn: 56255
2008-09-16 22:25:14 +00:00
Dan Gohman 64d6c6fe30 Change SelectionDAG::getConstantPool to always set the alignment of the
ConstantPoolSDNode, using the target's preferred alignment for the
constant type.

In LegalizeDAG, when performing loads from the constant pool, the
ConstantPoolSDNode's alignment is used in the calls to getLoad and
getExtLoad.

This change prevents SelectionDAG::getLoad/getExtLoad from incorrectly
choosing the ABI alignment for constant pool loads when Alignment == 0.
The incorrect alignment is only a performance issue when ABI alignment
does not equal preferred alignment (i.e., on x86 it was generating
MOVUPS instead of MOVAPS for v4f32 constant loads when the default ABI
alignment for 128bit vectors is forced to 1 byte.)

Patch by Paul Redmond!

llvm-svn: 56253
2008-09-16 22:05:41 +00:00
Bill Wendling 24c79f28b1 Reverting r56249. On further investigation, this functionality isn't needed.
Apologies for the thrashing.

llvm-svn: 56251
2008-09-16 21:48:12 +00:00
Dan Gohman ab26f20d44 Include the alignment value when displaying ConstantPoolSDNodes.
llvm-svn: 56250
2008-09-16 21:18:22 +00:00
Bill Wendling 8bc392fb1d - Change "ExternalSymbolSDNode" to "SymbolSDNode".
- Add linkage to SymbolSDNode (default to external).
- Change ISD::ExternalSymbol to ISD::Symbol.
- Change ISD::TargetExternalSymbol to ISD::TargetSymbol

These changes pave the way to allowing SymbolSDNodes with non-external linkage.

llvm-svn: 56249
2008-09-16 21:12:30 +00:00
Dan Gohman 5cf6120a7c Fix these comments to reflect current reality. Surprisingly,
MachineConstantPool::getConstantPoolIndex actually expects
a log2-encoded alignment.

llvm-svn: 56248
2008-09-16 20:45:53 +00:00
Dan Gohman dc5f5cbe59 Finally re-apply r46959. This is made feasible by the combination
of r56230, r56232, and r56246.

llvm-svn: 56247
2008-09-16 18:52:57 +00:00
Dan Gohman dafa9c6e85 Improve instcombine's handling of integer min and max in two ways:
- Recognize expressions like "x > -1 ? x : 0" as min/max and turn them
   into expressions like "x < 0 ? 0 : x", which is easily recognizable
   as a min/max operation.
 - Refrain from folding expression like "y/2 < 1" to "y < 2" when the
   comparison is being used as part of a min or max idiom, like
   "y/2 < 1 ? 1 : y/2". In that case, the division has another use, so
   folding doesn't eliminate it, and obfuscates the min/max, making it
   harder to recognize as a min/max operation.

These benefit ScalarEvolution, CodeGen, and anything else that wants to
recognize integer min and max.

llvm-svn: 56246
2008-09-16 18:46:06 +00:00
Evan Cheng 7c5dbd95e2 AllocateRWXMemory -> AllocateRWX.
llvm-svn: 56244
2008-09-16 17:28:18 +00:00
Dan Gohman a9c71ce5dc FCmpInst predicates UNO, ORD, FALSE, and TRUE are commutative.
llvm-svn: 56243
2008-09-16 16:44:00 +00:00
Bill Wendling 3f41b87e8d Fix test to account for no more whitespace and that one of the matches is the
"declare" statement.

llvm-svn: 56241
2008-09-16 06:40:04 +00:00
Bill Wendling 07fe6c8a07 Remove space that was forgotten.`
llvm-svn: 56240
2008-09-16 06:30:47 +00:00
Dan Gohman 050d7835c6 Don't take the time to CheckDAGForTailCallsAndFixThem when tail calls
are not enabled. Instead just omit the tail call flag when calls are
created.

llvm-svn: 56235
2008-09-16 01:42:28 +00:00
Dan Gohman 162568842e Fix spacing in the grep line for this test, following the recent
SCEV-whitespace changes.

llvm-svn: 56234
2008-09-16 01:37:08 +00:00
Dan Gohman c5d2892e62 Re-enables the new vector select in the bitcode reader, by modifying the
bitcode reader/writer as follows:

- add and use new bitcode FUNC_CODE_INST_VSELECT to handle the llvm
select opcode using either i1 or [N x i1] as the selector.
- retain old BITCODE FUNC_CODE_INST_SELECT in the bitcode reader to
handle select on i1 for backwards compatibility with existing bitcode
files.
- re-enable the vector-select.ll test program.

Also, rename the recently added bitcode opcode FUNC_CODE_INST_VCMP to
FUNC_CODE_INST_CMP2 and make the bitcode writer use it to handle
fcmp/icmp on scalars or vectors. In the bitcode writer, use
FUNC_CODE_INST_CMP for vfcmp/vicmp only. In the bitcode reader, have
FUNC_CODE_INST_CMP handle icmp/fcmp returning bool, for backwards
compatibility with existing bitcode files.

Patch by Preston Gurd!

llvm-svn: 56233
2008-09-16 01:01:33 +00:00
Dan Gohman f9081a2cd5 Teach ScalarEvolution to consider loop preheaders in the search for
an if statement that guards a loop, to allow indvars to avoid smax
operations in more situations.

llvm-svn: 56232
2008-09-15 22:18:04 +00:00
Owen Anderson 82ab1e7280 Live intervals for live-in registers should begin at the beginning of a basic block, not at the first
instruction.  Also, their valno's should have an unknown def.  This has no effect currently, but was
causing issues when StrongPHIElimination was enabled.

llvm-svn: 56231
2008-09-15 22:00:38 +00:00
Dan Gohman 68e7735a38 Teach LSR to optimize away SMAX operations for tripcounts in common
cases.  See the comment above OptimizeSMax for the full story, and
the testcase for an example. This cancels out a pessimization
commonly attributed to indvars, and will allow us to lift some of
the artificial throttles in indvars, rather than add new ones.

llvm-svn: 56230
2008-09-15 21:22:06 +00:00
Devang Patel 4089ccb0fa Extract optimization pass selection code from llvm-gcc into a separate routine.
This can be used by other stand alone tools, such as 'opt'.

llvm-svn: 56229
2008-09-15 21:13:42 +00:00
Bruno Cardoso Lopes 233785daae Fixed Bug 2751
http://llvm.org/bugs/show_bug.cgi?id=2751

Abicall was enabled even when static code model was provided 
in the command line.
The correct behavior is to disable abicall when static is
specified.

llvm-svn: 56228
2008-09-15 21:06:55 +00:00
Dan Gohman 3c7b9ba547 Re-enable SelectionDAG CSE for calls. It matters in the case of
libcalls, as in this testcase on ARM.

llvm-svn: 56226
2008-09-15 19:46:03 +00:00
Bruno Cardoso Lopes 595229a15a Added testcase for bswap allegrexel intrinsic
llvm-svn: 56225
2008-09-15 19:38:11 +00:00
Duncan Sands 18da83555f End of the GlobalsModRef experiment.
llvm-svn: 56222
2008-09-15 18:42:38 +00:00
Dan Gohman 46673ad82a Update the LLVM polygen grammar for recent language changes:
x86_ssecallcc, function notes, and some whitespace adjustments.

llvm-svn: 56221
2008-09-15 16:10:51 +00:00
Nick Lewycky 57368a561f Fix documentation for these functions; they do not only modify users within the
block specified by the InstList. Patch by Stefanus Du Toit.

llvm-svn: 56200
2008-09-15 06:31:52 +00:00
Evan Cheng 02acc35abd Correctly update kill infos after extending a live range and merge 2 val#'s; fix 56165 - do not mark val# copy field if the copy does not define the val#.
llvm-svn: 56199
2008-09-15 06:28:41 +00:00
Nick Lewycky a3784b98ae Add "sample" documentation to sample project.
This fixes part of PR2793.

llvm-svn: 56198
2008-09-15 05:31:29 +00:00
Dan Gohman 81313fd8d1 Fix WriteAsOperand to not emit a leading space character. Adjust
its callers to emit a space character before calling it when a
space is needed.

This fixes several spurious whitespace issues in
ScalarEvolution's debug dumps. See the test changes for
examples.

This also fixes odd space-after-tab indentation in the output
for switch statements, and changes calls from being printed like
this:
  call void @foo( i32 %x )
to this:
  call void @foo(i32 %x)

llvm-svn: 56196
2008-09-14 17:21:12 +00:00
Dale Johannesen c0d712d9ed adjust last patch per review feedback
llvm-svn: 56194
2008-09-14 01:44:36 +00:00
Gabor Greif 25ac5e3629 minor correction
llvm-svn: 56190
2008-09-13 18:51:27 +00:00
Dan Gohman 38453eebdc Remove isImm(), isReg(), and friends, in favor of
isImmediate(), isRegister(), and friends, to avoid confusion
about having two different names with the same meaning. I'm
not attached to the longer names, and would be ok with
changing to the shorter names if others prefer it.

llvm-svn: 56189
2008-09-13 17:58:21 +00:00
Duncan Sands 9ddb3145ae Fix PR2792: treat volatile loads as writing memory somewhere.
Treat stores as reading memory, just to play safe.

llvm-svn: 56188
2008-09-13 12:45:50 +00:00
Evan Cheng a5804effed Fix random abort.
llvm-svn: 56184
2008-09-13 01:55:59 +00:00
Dan Gohman d3fe174c53 Define CallSDNode, an SDNode subclass for use with ISD::CALL.
Currently it just holds the calling convention and flags
for isVarArgs and isTailCall.

And it has several utility methods, which eliminate magic
5+2*i and similar index computations in several places.

CallSDNodes are not CSE'd. Teach UpdateNodeOperands to handle
nodes that are not CSE'd gracefully.

llvm-svn: 56183
2008-09-13 01:54:27 +00:00
Evan Cheng 380482ac46 Typo.
llvm-svn: 56182
2008-09-13 01:44:01 +00:00
Evan Cheng ba28161103 Rely on instruction format to determine so_reg operand for now.
llvm-svn: 56181
2008-09-13 01:38:29 +00:00
Evan Cheng 12134701ec Revert 56176. All those instruction formats are still needed.
llvm-svn: 56180
2008-09-13 01:35:33 +00:00
Evan Cheng db6571a2c7 Accidentially flipped the condition.
llvm-svn: 56179
2008-09-13 01:29:57 +00:00
Evan Cheng 25a39094f8 Add debug dumps.
llvm-svn: 56178
2008-09-13 01:15:21 +00:00
Evan Cheng c5c74f36fd Eliminate unnecessary instruction formats.
llvm-svn: 56176
2008-09-12 23:15:39 +00:00