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2951 Commits

Author SHA1 Message Date
Dan Gohman
989db64c93 Rename ConstantSDNode's getSignExtended to getSExtValue, for 
consistancy with ConstantInt, and re-implement it in terms
of ConstantInt's getSExtValue.

llvm-svn: 56700
 2008-09-26 21:54:37 +00:00
Evan Cheng
9946443460 Fix @llvm.frameaddress codegen. FP elimination optimization should be disabled when frame address is desired. Also add support for depth > 0. 
llvm-svn: 56683
 2008-09-26 19:48:35 +00:00
Dale Johannesen
3f62c40108 Add "inreg" field to CallSDNode (doesn't increase 
its size).  Adjust various lowering functions to
pass this info through from CallInst.  Use it to
implement sseregparm returns on X86.  Remove
X86_ssecall calling convention.

llvm-svn: 56677
 2008-09-26 19:31:26 +00:00
Devang Patel
64dd7a2e89 Large mechanical patch. 
s/ParamAttr/Attribute/g
s/PAList/AttrList/g
s/FnAttributeWithIndex/AttributeWithIndex/g
s/FnAttr/Attribute/g

This sets the stage 
- to implement function notes as function attributes and 
- to distinguish between function attributes and return value attributes.

This requires corresponding changes in llvm-gcc and clang.

llvm-svn: 56622
 2008-09-25 21:00:45 +00:00
Dale Johannesen
62f64ab4c8 Accept 'inreg' attribute on x86 functions as 
meaning sse_regparm (i.e. float/double values go
in XMM0 instead of ST0).  Update documentation
to reflect reality.

llvm-svn: 56619
 2008-09-25 20:47:45 +00:00
Dan Gohman
9bb92ce6e9 Support for i1 XOR in FastISel. It is actually safe because 
i1 operands are assumed to already by zero-extended.

llvm-svn: 56615
 2008-09-25 17:22:52 +00:00
Dan Gohman
51cd436ad8 Don't print fast-isel debug messages by default. Thanks Chris! 
llvm-svn: 56614
 2008-09-25 17:21:42 +00:00
Dan Gohman
5ee9d9af7f Don't forget the newline in debug output. 
llvm-svn: 56613
 2008-09-25 17:17:27 +00:00
Dan Gohman
b63e6de501 FastISel support for debug info. 
llvm-svn: 56610
 2008-09-25 17:05:24 +00:00
Richard Pennington
1db9263b05 bug 2812: Segmentation fault on a big emdiam processor. 
llvm-svn: 56609
 2008-09-25 16:15:10 +00:00
Dan Gohman
1776533304 Fix a recent fast-isel coverage regression - don't bail out before 
giving the target a chance to materialize constants.

llvm-svn: 56605
 2008-09-25 01:28:51 +00:00
Dan Gohman
ed3216739e Enable DeadMachineInstructionElim when Fast-ISel is enabled. 
llvm-svn: 56604
 2008-09-25 01:14:49 +00:00
Evan Cheng
bac8250ba4 <rdar://problem/6234798> Assertion failed: (!OpInfo.AssignedRegs.Regs.empty() && "Couldn't allocate input reg!") 
llvm-svn: 56597
 2008-09-25 00:14:04 +00:00
Dale Johannesen
4184c23365 Remove SelectionDag early allocation of registers 
for earlyclobbers.  Teach Local RA about earlyclobber,
and add some tests for it.

llvm-svn: 56592
 2008-09-24 23:13:09 +00:00
Bill Wendling
7c60c6e7bf Reapplying r56550 
llvm-svn: 56553
 2008-09-24 10:25:02 +00:00
Bill Wendling
236c4d0204 Forgot this part with my last patch. Sorry about the breakage. 
llvm-svn: 56552
 2008-09-24 10:16:24 +00:00
Eric Christopher
8ffa64fdb5 Temporarily revert r56550 until missing commit can be added. 
llvm-svn: 56551
 2008-09-24 08:30:44 +00:00
Bill Wendling
456b33b615 Refactor the constant folding code into it's own function. And call it from both 
the SelectionDAG and DAGCombiner code. The only functionality change is that now
the DAG combiner is performing the constant folding for these operations instead
of being a no-op.

This is *not* in response to a bug, so there isn't a testcase.

llvm-svn: 56550
 2008-09-24 07:11:26 +00:00
Dale Johannesen
bc29bec7f8 Next round of earlyclobber handling. Approach the 
RA problem by expanding the live interval of an
earlyclobber def back one slot.  Remove
overlap-earlyclobber throughout.  Remove 
earlyclobber bits and their handling from
live internals.

llvm-svn: 56539
 2008-09-24 01:07:17 +00:00
Evan Cheng
f942615847 Properly handle 'm' inline asm constraints. If a GV is being selected for the addressing mode, it requires the same logic for PIC relative addressing, etc. 
llvm-svn: 56526
 2008-09-24 00:05:32 +00:00
Devang Patel
a3e9bf1bca s/ParameterAttributes/Attributes/g 
llvm-svn: 56513
 2008-09-23 23:03:40 +00:00
Dan Gohman
01a070f9c7 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
52a9adb3fa 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
28970ed355 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
3722f4c14c Make log, log2, log10, exp, exp2 use Expand by 
default.

llvm-svn: 56471
 2008-09-22 21:57:32 +00:00
Evan Cheng
638ae1be58 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
Oscar Fuentes
0f25988689 Initial support for the CMake build system. 
llvm-svn: 56419
 2008-09-22 01:08:49 +00:00
Bill Wendling
3ee08ff81e 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
01cab96cba don't print GlobalAddressSDNode's with an offset of zero as "foo0". 
llvm-svn: 56399
 2008-09-21 18:38:31 +00:00
Dan Gohman
f66b3277d3 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
Dan Gohman
b7c5b0f44b 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
Dale Johannesen
99091ed94f 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
Dan Gohman
4bef47e8c3 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
6cfbecd1fa 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
Dan Gohman
9cbb3f591a 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
932818c75a 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
6da3227304 Include the alignment value when displaying ConstantPoolSDNodes. 
llvm-svn: 56250
 2008-09-16 21:18:22 +00:00
Bill Wendling
1a240c8033 - 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
37457ca74b 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
f38d63884f 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
Dan Gohman
3450a8252f 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
Dan Gohman
082879cfde Change ConstantSDNode and ConstantFPSDNode to use ConstantInt* and 
ConstantFP* instead of APInt and APFloat directly.

This reduces the amount of time to create ConstantSDNode
and ConstantFPSDNode nodes when ConstantInt* and ConstantFP*
respectively are already available, as is the case in
SelectionDAGBuild.cpp. Also, it reduces the amount of time
to legalize constants into constant pools, and the amount of
time to add ConstantFP operands to MachineInstrs, due to
eliminating ConstantInt::get and ConstantFP::get calls.

It increases the amount of work needed to create new constants
in cases where the client doesn't already have a ConstantInt*
or ConstantFP*, such as legalize expanding 64-bit integer constants
to 32-bit constants. And it adds a layer of indirection for the
accessor methods. But these appear to be outweight by the benefits
in most cases.

It will also make it easier to make ConstantSDNode and
ConstantFPNode more consistent with ConstantInt and ConstantFP.

llvm-svn: 56162
 2008-09-12 18:08:03 +00:00
Dale Johannesen
6395da3510 Pass "earlyclobber" bit through to machine 
representation; coalescer and RA need to know
about it.  No functional change.

llvm-svn: 56161
 2008-09-12 17:49:03 +00:00
Dan Gohman
89660301e3 Rename ConstantSDNode::getValue to getZExtValue, for consistency 
with ConstantInt. This led to fixing a bug in TargetLowering.cpp
using getValue instead of getAPIntValue.

llvm-svn: 56159
 2008-09-12 16:56:44 +00:00
Dale Johannesen
fbc17046ff The sequence for ppcf128 compares was not IEEE 
safe in the presence of NaNs.

llvm-svn: 56136
 2008-09-12 00:30:56 +00:00
Dan Gohman
ad5824104b FastISel support for i1 PHI nodes. 
llvm-svn: 56069
 2008-09-10 21:01:31 +00:00
Dan Gohman
5a6134a875 FastISel support for i1 constants. 
llvm-svn: 56068
 2008-09-10 21:01:08 +00:00
Dan Gohman
3ccdde5eef Add X86FastISel support for static allocas, and refences 
to static allocas. As part of this change, refactor the
address mode code for laods and stores.

llvm-svn: 56066
 2008-09-10 20:11:02 +00:00
Dan Gohman
5211f1f5fc Add a break statement that I accidentally deleted when 
I shuffled the fast-isel command-line options around. This fixes
a bunch of fast-isel failures.

llvm-svn: 56057
 2008-09-10 15:52:34 +00:00
Bill Wendling
c7c5d73866 Remove unnecessary bit-wise AND from the limited precision work. 
llvm-svn: 56049
 2008-09-10 06:26:10 +00:00
Daniel Dunbar
df44fb835c Fix 80 col violation. 
llvm-svn: 56048
 2008-09-10 04:16:29 +00:00
Bill Wendling
4dc9d148b5 Check that both operands are f32 before attempting to lower. 
llvm-svn: 56036
 2008-09-10 00:24:59 +00:00
Bill Wendling
aa39e64468 Implement "visitPow". This is mainly used to see if we have a pow() call of this 
form:

          powf(10.0f, x);

If this is the case, and also we want limited precision floating-point
calculations, then lower to do the limited-precision stuff.

llvm-svn: 56035
 2008-09-10 00:20:20 +00:00
Evan Cheng
150ee094e2 A few more places where FPOW is being ignored. 
llvm-svn: 56032
 2008-09-09 23:35:53 +00:00
Dan Gohman
5b55c46044 Change -fast-isel-no-abort to -fast-isel-abort, which now defaults 
to being off by default. Also, add assertion checks to check that
the various fast-isel-related command-line options are only used
when -fast-isel itself is enabled.

llvm-svn: 56029
 2008-09-09 23:05:00 +00:00
Evan Cheng
ba11945234 Legalizer was missing code that expand fpow to a libcall. 
llvm-svn: 56028
 2008-09-09 23:02:14 +00:00
Bill Wendling
5d6d774240 Adding 6-, 12-, and 18-bit limited-precision floating-point support for exp2 
function.

llvm-svn: 56025
 2008-09-09 22:39:21 +00:00
Bill Wendling
103d08d4ce Add support for 6-, 12-, and 18-bit limited precision calculations of exp for 
floating-point numbers.

llvm-svn: 56023
 2008-09-09 22:13:54 +00:00
Dan Gohman
2799e1dc63 Add a new option, -fast-isel-verbose, that can be used with 
-fast-isel-no-abort to get a dump of all unhandled instructions,
without an abort.

llvm-svn: 56021
 2008-09-09 22:06:46 +00:00
Owen Anderson
0bdc9407ca Clean this up, based on Evan's suggestions. 
llvm-svn: 56009
 2008-09-09 20:47:17 +00:00
Bill Wendling
929486349f - Add support for 6-, 12-, and 18-bit limited precision floating-point "log" 
values.
- Refactored some of the code.

llvm-svn: 56008
 2008-09-09 20:39:27 +00:00
Anton Korobeynikov
6ad8b060d0 Make safer variant of alias resolution routine to be default 
llvm-svn: 56005
 2008-09-09 20:05:04 +00:00
Bill Wendling
727b25981a Add limited precision floating-point conversions of log10 for 6- and 18-bit 
precisions.

llvm-svn: 56000
 2008-09-09 18:42:23 +00:00
Owen Anderson
22debc8bec Check for type legality before materializing integer constants in fast isel. With this change, 
all of MultiSource/Applications passes on Darwin/X86 under FastISel.

llvm-svn: 55982
 2008-09-09 06:32:02 +00:00
Dan Gohman
4b334f02b1 Remove the code that protected FastISel from aborting in 
the case of loads, stores, and conditional branches. It can
handle those now, so any that aren't handled should trigger
the abort.

llvm-svn: 55977
 2008-09-09 02:40:04 +00:00
Evan Cheng
dc011a1b10 Fix a constant lowering bug. Now we can do load and store instructions with funky getelementptr embedded in the address operand. 
llvm-svn: 55975
 2008-09-09 01:26:59 +00:00
Bill Wendling
701da64da7 Add support for floating-point calculations of log2 with limited precisions of 6 
and 18.

llvm-svn: 55968
 2008-09-09 00:28:24 +00:00
Anton Korobeynikov
d82cd01929 Reapply 55904: Unbreak and fix indentation 
llvm-svn: 55958
 2008-09-08 21:13:56 +00:00
Dan Gohman
121cc3c111 Fix a few I's that were meant to be renamed to BI's. 
llvm-svn: 55942
 2008-09-08 20:37:59 +00:00
Dale Johannesen
78617b727e Redo the 3 existing low-precision expansions to 
use float constants.  An oversight by the numerics
people who supplied this.

llvm-svn: 55930
 2008-09-08 18:00:26 +00:00
Bill Wendling
4cc4caab72 Reverting r55898 to r55909. One of these patches was causing an ICE during the full bootstrap on Darwin: 
/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.obj/./gcc/xgcc
-B/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.obj/./gcc/
-B/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.install/i386-apple-darwin9.4.0/bin/
-B/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.install/i386-apple-darwin9.4.0/lib/
-isystem /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.install/i386-apple-darwin9.4.0/include
-isystem /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.install/i386-apple-darwin9.4.0/sys-include
-O2  -O2 -g -O2  -DIN_GCC    -W -Wall -Wwrite-strings
-Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition
-isystem ./include  -fPIC -pipe -g -DHAVE_GTHR_DEFAULT -DIN_LIBGCC2
-D__GCC_FLOAT_NOT_NEEDED  -I. -I. -I../../llvm-gcc.src/gcc
-I../../llvm-gcc.src/gcc/. -I../../llvm-gcc.src/gcc/../include
-I./../intl -I../../llvm-gcc.src/gcc/../libcpp/include
-I../../llvm-gcc.src/gcc/../libdecnumber -I../libdecnumber
-I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.obj/include
-I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.src/include
-DSHARED -m64 -DL_negdi2 -c ../../llvm-gcc.src/gcc/libgcc2.c -o
libgcc/x86_64/_negdi2_s.o
Assertion failed: (TargetRegisterInfo::isVirtualRegister(regA) &&
TargetRegisterInfo::isVirtualRegister(regB) && "cannot update physical
register live information"), function runOnMachineFunction, file
/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.src/lib/CodeGen/TwoAddressInstructionPass.cpp,
line 311.
/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.obj/./gcc/xgcc
-B/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.obj/./gcc/
-B/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.install/i386-apple-darwin9.4.0/bin/
-B/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.install/i386-apple-darwin9.4.0/lib/
-isystem /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.install/i386-apple-darwin9.4.0/include
-isystem /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm-gcc.install/i386-apple-darwin9.4.0/sys-include
-O2  -O2 -g -O2  -DIN_GCC    -W -Wall -Wwrite-strings
-Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition
-isystem ./include  -fPIC -pipe -g -DHAVE_GTHR_DEFAULT -DIN_LIBGCC2
-D__GCC_FLOAT_NOT_NEEDED  -I. -I. -I../../llvm-gcc.src/gcc
-I../../llvm-gcc.src/gcc/. -I../../llvm-gcc.src/gcc/../include
-I./../intl -I../../llvm-gcc.src/gcc/../libcpp/include
-I../../llvm-gcc.src/gcc/../libdecnumber -I../libdecnumber
-I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.obj/include
-I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.src/include
-DSHARED -m64 -DL_lshrdi3 -c ../../llvm-gcc.src/gcc/libgcc2.c -o
libgcc/x86_64/_lshrdi3_s.o
../../llvm-gcc.src/gcc/unwind-dw2.c:1527: internal compiler error: Abort trap
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://developer.apple.com/bugreporter> for instructions.
{standard input}:unknown:Undefined local symbol LBB21_11
{standard input}:unknown:Undefined local symbol LBB21_12
{standard input}:unknown:Undefined local symbol LBB21_13
{standard input}:unknown:Undefined local symbol LBB21_8

llvm-svn: 55928
 2008-09-08 17:59:12 +00:00
Dan Gohman
c9fdcfb189 In visitUREM, arrange for the temporary UDIV node to be 
revisited, consistent with the code in visitSREM.

llvm-svn: 55923
 2008-09-08 16:59:01 +00:00
Daniel Dunbar
ddd9b2aeb0 Add VISIBILITY_HIDDEN on SDISelAsmOperandInfo 
llvm-svn: 55922
 2008-09-08 16:56:08 +00:00
Dan Gohman
afe7e3f3b1 Fix the string for ISD::UDIVREM. 
llvm-svn: 55917
 2008-09-08 16:30:29 +00:00
Evan Cheng
432600a47a Avoid redefinition and nnbreak windows build. 
llvm-svn: 55911
 2008-09-08 16:01:27 +00:00
Anton Korobeynikov
5ea45bb9eb Unbreak and fix indentation 
llvm-svn: 55904
 2008-09-08 14:23:34 +00:00
Evan Cheng
8cb490d2f3 Add fast isel physical register definition support. 
llvm-svn: 55892
 2008-09-08 08:38:20 +00:00
Bill Wendling
2239de4290 Revert my previous change -- the subtraction of two constants was a no-op 
before. This is taken care of in the selection DAG pass. In my opinion, this
should be in one place or the other. I.e., it should probably be removed from
the DAG combiner (along with the other arithmetic transformations on constants
that are essentially no-ops).

llvm-svn: 55889
 2008-09-08 01:56:32 +00:00
Bill Wendling
91e9abe370 Convert 
// fold (sub c1, c2) -> c1-c2

from a no-op into an actual transformation.

llvm-svn: 55886
 2008-09-07 11:34:47 +00:00
Evan Cheng
396c744dfa Indentation. 
llvm-svn: 55880
 2008-09-07 09:04:52 +00:00
Evan Cheng
285350703c - Doh. Pass vector by value is bad. 
- Add a AnalyzeCallResult specialized for calls which produce a single value. This is used by fastisel.

llvm-svn: 55879
 2008-09-07 09:02:18 +00:00
Dale Johannesen
3be45974bb Next limited float precision expansion (log2 12 bits) 
llvm-svn: 55866
 2008-09-05 23:49:37 +00:00
Owen Anderson
453bcfcf8d Revert r55859. This is breaking the build in the abscence of its companion commit. 
llvm-svn: 55865
 2008-09-05 23:36:01 +00:00
Dan Gohman
85d35b92df Move the code that inserts copies for function livein registers 
out of ScheduleDAGEmit.cpp and into SelectionDAGISel.cpp. This
allows it to be run exactly once per function, even if multiple
SelectionDAG iterations happen in the entry block, as may happen
with FastISel.

llvm-svn: 55863
 2008-09-05 22:59:21 +00:00
Dale Johannesen
6b48790d88 Add the next limited-precision expansion. 
llvm-svn: 55856
 2008-09-05 21:27:19 +00:00
Dan Gohman
b22e9b050f FastISel support for AND and OR with type i1. 
llvm-svn: 55846
 2008-09-05 18:44:22 +00:00
Dale Johannesen
116163ab21 Add hooks for other intrinsics to get low-precision expansions. 
llvm-svn: 55845
 2008-09-05 18:38:42 +00:00
Dan Gohman
525caf83e5 FastISel support for ConstantExprs. 
llvm-svn: 55843
 2008-09-05 18:18:20 +00:00
Dan Gohman
13d7484b4a Revert r55817. It broke PIC. FastISel will need to find a different 
approach here.

llvm-svn: 55842
 2008-09-05 18:13:01 +00:00
Evan Cheng
339a06f29e Add a variant of AnalyzeCallOperands that can be used by fast isel. 
llvm-svn: 55838
 2008-09-05 16:59:26 +00:00
Duncan Sands
566e0f1053 "Fix" PR2762. The testcase now crashes codegen 
elsewhere due to a missing pattern for
v2f64 = sint_to_fp v2i32.  That is PR2687.

llvm-svn: 55828
 2008-09-05 08:13:35 +00:00
Dan Gohman
a3987ed4e2 Fix a search+replace-o. 
llvm-svn: 55824
 2008-09-05 01:58:21 +00:00
Dale Johannesen
ce63ed5b47 Add -flimit-float-precision to enable some faster, 
but less accurate (non-IEEE) code sequences for
certain math library functions.  Add the first of
several such expansions.  Don't worry, if you don't
turn it on it won't affect you.

llvm-svn: 55823
 2008-09-05 01:48:15 +00:00
Dan Gohman
e64326ff34 FastISel support for unreachable. 
llvm-svn: 55818
 2008-09-05 01:08:41 +00:00
Dan Gohman
fcd2cbd985 In FastISel mode, the scheduler may be invoked multiple times 
in the same block. Fix the entry-block handling to only run at
at the beginning of the entry block, and not any other times.

llvm-svn: 55817
 2008-09-05 01:07:48 +00:00
Owen Anderson
6d5b72d45a Add initial support for selecting constant materializations that require constant 
pool loads on X86 in fast isel.  This isn't actually used yet.

llvm-svn: 55814
 2008-09-05 00:06:23 +00:00
Dan Gohman
1ffb4ad3a8 Add an include of SmallSet.h. 
llvm-svn: 55793
 2008-09-04 20:49:27 +00:00
Dan Gohman
e1f9be27bc Tidy up several unbeseeming casts from pointer to intptr_t. 
llvm-svn: 55779
 2008-09-04 17:05:41 +00:00
Dan Gohman
7ee14837e6 Clean up uses of TargetLowering::getTargetMachine. 
llvm-svn: 55769
 2008-09-04 15:39:15 +00:00
Dale Johannesen
9e4d101fab Add intrinsics for log, log2, log10, exp, exp2. 
No functional change (and no FE change to generate them).

llvm-svn: 55753
 2008-09-04 00:47:13 +00:00
Dan Gohman
18f659d804 Do trivial local CSE for constants and other non-Instruction values 
in FastISel.

llvm-svn: 55748
 2008-09-03 23:32:19 +00:00
Dan Gohman
f86538dd3c Put RegsForValue in the llvm namespace to avoid warnings about 
classes in the llvm namespace having members with types from
anonymous namespaces.

llvm-svn: 55747
 2008-09-03 23:18:39 +00:00
Dan Gohman
18cc2a26df Create HandlePHINodesInSuccessorBlocksFast, a version of 
HandlePHINodesInSuccessorBlocks that works FastISel-style. This
allows PHI nodes to be updated correctly while using FastISel.

This also involves some code reorganization; ValueMap and
MBBMap are now members of the FastISel class, so they needn't
be passed around explicitly anymore. Also, SelectInstructions
is changed to SelectInstruction, and only does one instruction
at a time.

llvm-svn: 55746
 2008-09-03 23:12:08 +00:00
Owen Anderson
d08396955c Oops, I accidentally broke the fallback case with my last commit. 
llvm-svn: 55704
 2008-09-03 17:51:57 +00:00
Owen Anderson
906c590bb8 Fix an issue where we were reusing materializations of constants in blocks not dominated by the materialization. This is 
the simple fix, materializing the constant before every use.  It might be better to either track domination of uses or
to materialize all constants and the beginning of the function and let remat sort when to do materialization at uses.

llvm-svn: 55703
 2008-09-03 17:37:03 +00:00
Dan Gohman
3ee4edfe9c Split the SelectionDAG-building code, including the FunctionLoweringInfo 
and SelectionDAGLowering classes, out of SelectionDAGISel.cpp and put
it in a separate file, SelectionDAGBuild.cpp.

llvm-svn: 55701
 2008-09-03 16:12:24 +00:00
Dan Gohman
c58897359b Separate MachineInstr-emitting routines from actual scheduling 
routines and move them into a separate file, ScheduleDAGEmit.cpp.

llvm-svn: 55699
 2008-09-03 16:01:59 +00:00
Evan Cheng
f993be4cc8 If TargetSelectInstruction returns true, move to next instruction. 
llvm-svn: 55692
 2008-09-03 06:43:41 +00:00
Evan Cheng
5e0e6dfc7f 80 col violations. 
llvm-svn: 55668
 2008-09-02 21:59:13 +00:00
Dan Gohman
9969b223c7 Ensure that HandlePHINodesInSuccessorBlocks is run for all blocks, 
even in FastISel mode in the case where FastISel successfully 
selects all the instructions. 

llvm-svn: 55641
 2008-09-02 20:17:56 +00:00
Gabor Greif
632fa3a318 Provide two overloads of AnalyzeNewNode. 
The first can update the SDNode in an SDValue
while the second is called with SDNode* and
returns a possibly updated SDNode*.

This patch has no intended functional impact,
but helps eliminating ugly temporary SDValues.

llvm-svn: 55608
 2008-09-01 15:10:19 +00:00
Duncan Sands
efc82024e0 Even though no caller actually uses the new value 
(what matters is that it is added to the worklist),
it seems more logical to return it.

llvm-svn: 55606
 2008-09-01 13:11:13 +00:00
Bill Wendling
3f918b3603 Another situation where ROTR is cheaper than ROTL. 
llvm-svn: 55577
 2008-08-31 01:13:31 +00:00
Bill Wendling
ef64d4333e For this pattern, ROTR is the cheaper option. 
llvm-svn: 55576
 2008-08-31 01:04:56 +00:00
Bill Wendling
08690f06b2 - Fix comment so that it describes how the code really works: 
// fold (or (shl x, (*ext y)), (srl x, (*ext (sub 32, y)))) ->
   //   (rotl x, y)
   // fold (or (shl x, (*ext y)), (srl x, (*ext (sub 32, y)))) ->
   //   (rotr x, (sub 32, y))

Example: (x == 0xDEADBEEF and y == 4)

    (x << 4) | (x >> 28)
 => 0xEADBEEF0 | 0x0000000D
 => 0xEADBEEFD

    (rotl x, 4)
 => 0xEADBEEFD

    (rotr x, 28)
 => 0xEADBEEFD

- Fix comment and code for second version. It wasn't using the rot* propertly.

   // fold (or (shl x, (*ext (sub 32, y))), (srl x, (*ext r))) -> 
   //   (rotr x, y)
   // fold (or (shl x, (*ext (sub 32, y))), (srl x, (*ext r))) ->
   //   (rotl x, (sub 32, y))

    (x << 28) | (x >> 4)
 => 0xD0000000 | 0x0DEADBEE
 => 0xDDEADBEE

    (rotl x, 4)
 => 0xEADBEEFD

    (rotr x, 28)
 => (0xEADBEEFD)

llvm-svn: 55575
 2008-08-31 00:37:27 +00:00
Gabor Greif
fa6e220233 typo 
llvm-svn: 55574
 2008-08-30 22:16:05 +00:00
Gabor Greif
2aef1d5e4c fix some 80-col violations 
llvm-svn: 55571
 2008-08-30 19:29:20 +00:00
Evan Cheng
4bc8c9652e Transform (x << (y&31)) -> (x << y). This takes advantage of the fact x86 shift instructions 2nd operand (shift count) is limited to 0 to 31 (or 63 in the x86-64 case). 
llvm-svn: 55558
 2008-08-30 02:03:58 +00:00
Owen Anderson
6c8f04643e Fix an issue where a use might be selected before a def, and then we didn't respect the pre-chosen vreg 
assignment when selecting the def.  This is the naive solution to the problem: insert a copy to the pre-chosen
vreg.  Other solutions might be preferable, such as:
  1) Passing the dest reg into FastEmit_.  However, this would require the higher level code to know about reg classes, which they don't currently.
  2) Selecting blocks in reverse postorder.  This has some compile time cost for computing the order, and we'd need to measure its impact.

llvm-svn: 55555
 2008-08-30 00:38:46 +00:00
Evan Cheng
9ee227f1df Fix 80 col. violations. 
llvm-svn: 55551
 2008-08-29 23:20:46 +00:00
Evan Cheng
2a3e05b519 Back out 55498. It broken Apple style bootstrapping. 
llvm-svn: 55549
 2008-08-29 22:21:44 +00:00
Dan Gohman
c7b8401b77 Add a target callback for FastISel. 
llvm-svn: 55512
 2008-08-28 23:21:34 +00:00
Gabor Greif
86c795a8ca erect abstraction boundaries for accessing SDValue members, rename Val -> Node to reflect semantics 
llvm-svn: 55504
 2008-08-28 21:40:38 +00:00
Dan Gohman
481731693d Implement null and undef values for FastISel. 
llvm-svn: 55500
 2008-08-28 21:19:07 +00:00
Dan Gohman
35a69c106a Optimize DAGCombiner's worklist processing. Previously it started 
its work by putting all nodes in the worklist, requiring a big
dynamic allocation. Now, DAGCombiner just iterates over the AllNodes
list and maintains a worklist for nodes that are newly created or
need to be revisited. This allows the worklist to stay small in most
cases, so it can be a SmallVector.

This has the side effect of making DAGCombine not miss a folding
opportunity in alloca-align-rounding.ll.

llvm-svn: 55498
 2008-08-28 21:01:56 +00:00
Dan Gohman
9a6f5b0bdd Move CaseBlock, JumpTable, and BitTestBlock to be members of 
SelectionDAGLowering instead of being in an anonymous namespace.
This fixes warnings about SelectionDAGLowering having fields
using anonymous namespaces.

llvm-svn: 55497
 2008-08-28 20:38:18 +00:00
Dan Gohman
f8e43fa400 Fix a FastISel bug where the instructions from lowering the arguments 
were being emitted after the first instructions of the entry block.

llvm-svn: 55496
 2008-08-28 20:28:56 +00:00
Rafael Espindola
31c516aabe Reduce the size of the Parts vector. 
llvm-svn: 55483
 2008-08-28 18:29:58 +00:00
Owen Anderson
675ace60a1 Hook up support for fast-isel of trunc instructions, using the newly working support for EXTRACT_SUBREG. 
llvm-svn: 55482
 2008-08-28 18:26:01 +00:00
Owen Anderson
8c991b6f8a FastEmitInst_extractsubreg doesn't need to be passed the register class. It can get it from MachineRegisterInfo instead. 
llvm-svn: 55476
 2008-08-28 17:47:37 +00:00
Rafael Espindola
17b967216a Correctly resize the Parts array. 
llvm-svn: 55471
 2008-08-28 14:24:45 +00:00
Dale Johannesen
490c016734 Split the ATOMIC NodeType's to include the size, e.g. 
ATOMIC_LOAD_ADD_{8,16,32,64} instead of ATOMIC_LOAD_ADD.
Increased the Hardcoded Constant OpActionsCapacity to match.
Large but boring; no functional change.

This is to support partial-word atomics on ppc; i8 is
not a valid type there, so by the time we get to lowering, the
ATOMIC_LOAD nodes looks the same whether the type was i8 or i32.
The information can be added to the AtomicSDNode, but that is the
largest SDNode; I don't fully understand the SDNode allocation,
but it is sensitive to the largest node size, so increasing
that must be bad.  This is the alternative.

llvm-svn: 55457
 2008-08-28 02:44:49 +00:00
Dan Gohman
3a89011a01 Reorganize the lifetimes of the major objects SelectionDAGISel 
works with.

SelectionDAG, FunctionLoweringInfo, and SelectionDAGLowering
objects now get created once per SelectionDAGISel instance, and
can be reused across blocks and across functions. Previously,
they were created and destroyed each time they were needed.

This reorganization simplifies the handling of PHI nodes, and
also SwitchCases, JumpTables, and BitTestBlocks. This
simplification has the side effect of fixing a bug in FastISel
where successor PHI nodes weren't being updated correctly.

This is also a step towards making the transition from FastISel
into and out of SelectionDAG faster, and also making
plain SelectionDAG faster on code with lots of little blocks.

llvm-svn: 55450
 2008-08-27 23:52:12 +00:00
Owen Anderson
bb32ae5803 Add a helper method that will be used to support EXTRACT_SUBREG for selecting trunc's in fast-isel. 
llvm-svn: 55439
 2008-08-27 22:30:02 +00:00
Dan Gohman
9e928e0b1f Fix FastISel's bitcast code for the case where getRegForValue fails. 
llvm-svn: 55431
 2008-08-27 20:41:38 +00:00
Owen Anderson
0b1a8af290 Use TargetLowering to get the types in fast isel, which handles pointer types correctly for our purposes. 
llvm-svn: 55428
 2008-08-27 18:58:30 +00:00
Dan Gohman
b76e1ca974 Don't check TLI.getOperationAction. The FastISel way is to 
just try to do the action and let the tablegen-generated code
determine if there is target-support for an operation.

llvm-svn: 55427
 2008-08-27 18:15:05 +00:00
Dan Gohman
d5e34d9dce Add a new FastISel method, getRegForValue, which takes care of 
the details of materializing constants and other values into
registers, and make use of it in several places.

llvm-svn: 55426
 2008-08-27 18:10:19 +00:00
Dan Gohman
6174651396 Add a comment about the current floating-point constant code in FastISel. 
llvm-svn: 55425
 2008-08-27 18:01:42 +00:00
Dan Gohman
d9e0302919 Optimize ScheduleDAGRRList's topological sort to use one pass instead 
of two, and to not need a scratch std::vector. Also, compute the ordering
immediately in the result array, instead of in another scratch std::vector
that is copied to the result array.

llvm-svn: 55421
 2008-08-27 16:29:48 +00:00
Dan Gohman
db4286e6f7 Optimize ScheduleDAG's ComputeDepths and ComputeHeights to not need 
a scratch std::vector.

llvm-svn: 55420
 2008-08-27 16:27:25 +00:00
Dan Gohman
5e5f1c9e8f Basic FastISel support for floating-point constants. 
llvm-svn: 55401
 2008-08-27 01:09:54 +00:00
Owen Anderson
a0b7e0ab93 Fix handling of inttoptr and ptrtoint when unhandled operands are present. 
llvm-svn: 55400
 2008-08-27 00:35:37 +00:00
Owen Anderson
c5d2fe6354 Add support for fast isel of inttoptr and ptrtoint in the cases where truncation is not needed. 
llvm-svn: 55399
 2008-08-27 00:31:01 +00:00
Owen Anderson
a8911f33f8 Factor out a large amoutn of the cast handling code in fast isel into helper methods. 
This simultaneously makes the code simpler and adds support for sext as well.

llvm-svn: 55398
 2008-08-26 23:46:32 +00:00
Owen Anderson
0cee245fdc Add support for fast isel of zext. 
llvm-svn: 55396
 2008-08-26 23:14:49 +00:00
Gabor Greif
4b86114f92 disallow direct access to SDValue::ResNo, provide a getter instead 
llvm-svn: 55394
 2008-08-26 22:36:50 +00:00
Owen Anderson
d33f25d615 Add support for fptosi of constants in fast isel. 
llvm-svn: 55393
 2008-08-26 22:34:28 +00:00
Dan Gohman
3e50c6348a Optimize SelectionDAG's topological sort to use one pass instead 
of two, and to not need a scratch std::vector. Also, use the
SelectionDAG's topological sort in LegalizeDAG instead of having
a separate implementation.

llvm-svn: 55389
 2008-08-26 21:42:18 +00:00
Dan Gohman
57b5f9b931 Refactor the bitcast code into its own function. 
llvm-svn: 55387
 2008-08-26 21:28:54 +00:00
Dan Gohman
58882d14c4 Make FastISel use the correct argument type when casting GEP indices. 
llvm-svn: 55384
 2008-08-26 20:57:08 +00:00
Dan Gohman
722e912650 Don't select binary instructions with illegal types. 
llvm-svn: 55383
 2008-08-26 20:52:40 +00:00
Owen Anderson
b15e88b671 Add support for fast isel of sitofp, and remove some unnecessary and imprecise legality checks. 
llvm-svn: 55381
 2008-08-26 20:37:00 +00:00
Owen Anderson
821ddf6726 Use a combination of copyRegToReg and ISD::BIT_CONVERT when doing fast isel of bitcasts, 
allowing it to support the full range of conversions people might ask for in a correct manner.

llvm-svn: 55378
 2008-08-26 18:51:24 +00:00
Owen Anderson
5fef19facf Make TargetInstrInfo::copyRegToReg return a bool indicating whether the copy requested 
was inserted or not.  This allows bitcast in fast isel to properly handle the case
where an appropriate reg-to-reg copy is not available.

llvm-svn: 55375
 2008-08-26 18:03:31 +00:00
Owen Anderson
76c3c73a7a Add support for fast isel of non-constant fptosi instructions. 
llvm-svn: 55373
 2008-08-26 17:44:42 +00:00
Chris Lattner
4367c5c58b typo fix. 
llvm-svn: 55355
 2008-08-26 06:07:47 +00:00
Dan Gohman
815d50b9e6 Actually recycle SDNode allocations. SelectionDAG is using 
RecyclingAllocator, but this change is needed for the nodes
to actually be recycled. This cuts SelectionDAG's memory
usage high-water-mark in half in some cases.

llvm-svn: 55351
 2008-08-26 01:44:34 +00:00
Owen Anderson
9264f41ef2 Add a RetVT parameter to emitted FastISel methods, so that we will be able to pass the desired return 
type down.  This is not currently used.

llvm-svn: 55345
 2008-08-25 23:58:18 +00:00
Evan Cheng
45e24233c7 Unbreak build. 
llvm-svn: 55342
 2008-08-25 22:20:39 +00:00
Owen Anderson
1532aad9a8 Expand bitcast support in fast isel to support bitcasts of non-constant values by emitting reg-reg copies. 
llvm-svn: 55340
 2008-08-25 21:32:34 +00:00
Owen Anderson
27491bbf2c Add support for fast isel of (integer) immediate materialization pattens, and use them to support 
bitcast of constants in fast isel.

llvm-svn: 55325
 2008-08-25 20:20:32 +00:00
Chris Lattner
2147640791 make sure to flush the stream after dumping, to make sure it goes out immediately. 
llvm-svn: 55288
 2008-08-24 18:28:30 +00:00
Chris Lattner
b09962fd1a get MachineConstantPool off std::ostream, onto raw_ostream. It would be 
really nice if someone converted MachineFunction::print to raw_ostream.

llvm-svn: 55268
 2008-08-23 22:53:13 +00:00
Chris Lattner
fe3155fc62 Switch the asmprinter (.ll) and all the stuff it requires over to 
use raw_ostream instead of std::ostream.  Among other goodness,
this speeds up llvm-dis of kc++ with a release build from 0.85s
to 0.49s (88% faster).

Other interesting changes:
 1) This makes Value::print be non-virtual.
 2) AP[S]Int and ConstantRange can no longer print to ostream directly, 
    use raw_ostream instead.
 3) This fixes a bug in raw_os_ostream where it didn't flush itself 
    when destroyed.
 4) This adds a new SDNode::print method, instead of only allowing "dump".


A lot of APIs have both std::ostream and raw_ostream versions, it would
be useful to go through and systematically anihilate the std::ostream 
versions.

This passes dejagnu, but there may be minor fallout, plz let me know if
so and I'll fix it.

llvm-svn: 55263
 2008-08-23 22:23:09 +00:00
Dan Gohman
a5ce6c1747 Make MBBMap a DenseMap instead of a std::map. 
llvm-svn: 55220
 2008-08-23 02:44:46 +00:00
Dan Gohman
a9d5f9b006 Move the point at which FastISel taps into the SelectionDAGISel 
process up to a higher level. This allows FastISel to leverage
more of SelectionDAGISel's infastructure, such as updating Machine
PHI nodes.

Also, implement transitioning from SDISel back to FastISel in
the middle of a block, so it's now possible to go back and
forth. This allows FastISel to hand individual CallInsts and other
complicated things off to SDISel to handle, while handling the rest
of the block itself.

To help support this, reorganize the SelectionDAG class so that it
is allocated once and reused throughout a function, instead of
being completely reallocated for each block.

llvm-svn: 55219
 2008-08-23 02:25:05 +00:00
Dan Gohman
27de898e15 Avoid creating shift-by-zero SDNodes in the common case of 
i8* getelementptr. DAGCombine eliminates these, but this is
a fairly common case.

llvm-svn: 55214
 2008-08-23 01:06:51 +00:00
Dan Gohman
6847bc50b9 Move SelectionDAG's constructor out of line. 
llvm-svn: 55212
 2008-08-23 00:50:30 +00:00
Dan Gohman
071122d2a3 Reapply r55191 and r55192. 
llvm-svn: 55205
 2008-08-22 21:28:19 +00:00
Bill Wendling
60e176391d Reverting r55190, r55191, and r55192. They broke the build with this error message: 
{standard input}:17:bad register name `%sil'
make[4]: *** [libgcc/./_addvsi3.o] Error 1
make[4]: *** Waiting for unfinished jobs....
{standard input}:23:bad register name `%dil'
{standard input}:28:bad register name `%dil'
make[4]: *** [libgcc/./_addvdi3.o] Error 1
{standard input}:18:bad register name `%sil'
make[4]: *** [libgcc/./_subvsi3.o] Error 1

llvm-svn: 55200
 2008-08-22 20:51:05 +00:00
Dan Gohman
557a7db2eb Fix the InsertBranch call. 
llvm-svn: 55192
 2008-08-22 19:26:10 +00:00
Dan Gohman
3b161cdce8 Support non-fallthrough unconditional branches in FastISel. 
llvm-svn: 55191
 2008-08-22 19:21:41 +00:00
Dan Gohman
92921499ae Add FastISel support for PHINodes. Machine PHI nodes 
are not yet updated properly, but that's a separate
task.

llvm-svn: 55187
 2008-08-22 17:37:48 +00:00
Dan Gohman
a398d11527 Factor out the predicate check code from DAGISelEmitter.cpp 
and use it in FastISelEmitter.cpp, and make FastISel
subtarget aware. Among other things, this lets it work
properly on x86 targets that don't have SSE, where it
successfully selects x87 instructions.

llvm-svn: 55156
 2008-08-22 00:20:26 +00:00
Dan Gohman
07ec8e6f4a Add libcalls for the new rounding opcodes. 
llvm-svn: 55133
 2008-08-21 18:38:14 +00:00
Dan Gohman
b5635a2c51 Add libm-oriented ISD opcodes for rounding operations. 
llvm-svn: 55130
 2008-08-21 17:55:02 +00:00
Dan Gohman
7c434de476 Have FastISel skip the multiply by 1 for getelementptr on i8*. 
llvm-svn: 55129
 2008-08-21 17:37:05 +00:00
Dan Gohman
f4269f7bea MVT::getMVT uses iPTR for pointer types, while we need the actual 
intptr_t type in this case. FastISel can now select simple
getelementptr instructions.

llvm-svn: 55125
 2008-08-21 17:25:26 +00:00
Dan Gohman
512af985d7 Elements in DeadNodeSet are checked for use_empty() before they 
are actually deleted, so it's not necessary to remove re-used
nodes from the set.

llvm-svn: 55123
 2008-08-21 16:24:54 +00:00
Dan Gohman
a6e647dd7c Basic fast-isel support for instructions with constant int operands. 
llvm-svn: 55099
 2008-08-21 01:41:07 +00:00
Evan Cheng
45c46520da Type of first GEP operand is always the same as the target pointer type. 
llvm-svn: 55097
 2008-08-21 01:19:11 +00:00
Dan Gohman
71aa272ac4 Fix unused variable warnings. 
llvm-svn: 55089
 2008-08-20 23:53:10 +00:00
Evan Cheng
c55f07023a First cut, un-optimized (and untested) fast isel lowering of GetElementPtrInst. 
llvm-svn: 55085
 2008-08-20 22:45:34 +00:00
Dan Gohman
50af19179b Simplify the BuildMI calls even more. 
llvm-svn: 55077
 2008-08-20 21:10:53 +00:00
Dan Gohman
ddebe95287 Simplify FastISel's constructor argument list, make the FastISel 
class hold a MachineRegisterInfo member, and make the
MachineBasicBlock be passed in to SelectInstructions rather
than the FastISel constructor.

llvm-svn: 55076
 2008-08-20 21:05:57 +00:00
Dan Gohman
d8324c4066 Dump the instruction that foiled ISel even when -debug is not used. 
llvm-svn: 55075
 2008-08-20 20:47:32 +00:00
Dan Gohman
96efa9606f Make more use of the BuildMI API. 
llvm-svn: 55072
 2008-08-20 18:16:32 +00:00
Dan Gohman
3606d17592 Minor code reorganization. 
llvm-svn: 55071
 2008-08-20 18:10:48 +00:00
Dan Gohman
44da988220 Minor whitespace cleanup. 
llvm-svn: 55070
 2008-08-20 18:09:38 +00:00
Dan Gohman
9e5e42e0d5 Fix 80 column violation. 
llvm-svn: 55069
 2008-08-20 18:09:02 +00:00
Evan Cheng
5ff34fa3b4 Kill off SimpleBBISel, it's replaced by FastISel. 
llvm-svn: 55067
 2008-08-20 17:50:32 +00:00
Dan Gohman
00ddda96c9 Disable DAGCombine's alignment inference in "fast" codegen mode. 
llvm-svn: 55059
 2008-08-20 16:30:28 +00:00
Dan Gohman
e1a5bc775e Change the FoldingSetNodeID usage for objects which carry 
alignment and volatility information, such as loads and
stores, to reduce the number of integer values added to
the FoldingSetNodeID.

llvm-svn: 55058
 2008-08-20 15:58:01 +00:00
Dan Gohman
22c225c022 Use BitVector instead of std::vector<unsigned char>. 
llvm-svn: 55054
 2008-08-20 14:58:41 +00:00
Dan Gohman
7f2b41c9e2 Avoid an empty-if-body warning in release builds. 
llvm-svn: 55050
 2008-08-20 14:00:56 +00:00
Dan Gohman
d0da06c817 Fix FastISel to recognize that the last block in the function does 
not have a fall-through successor.

llvm-svn: 55033
 2008-08-20 01:17:01 +00:00
Dan Gohman
472f4b49b6 Fix a leak in the FastISel code that Chris pointed out. 
llvm-svn: 55031
 2008-08-20 00:56:17 +00:00
Dan Gohman
023bedddc4 Add support for running SelectionDAG if FastISel fails. This is under 
a command-line option, so that the default behavior is an abort, which
is useful for exposing code that isn't supported yet.

llvm-svn: 55028
 2008-08-20 00:47:54 +00:00
Dan Gohman
f298c31918 Fix FastISel to recognize unhandled operands, such as constants 
that aren't available as virtual registers (for now).

llvm-svn: 55026
 2008-08-20 00:35:17 +00:00