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4b334f02b1
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2737 Commits

Author SHA1 Message Date
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