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Commit Graph

83034 Commits

Author SHA1 Message Date
Chad Rosier
fb2fc059af Fix combine of uno && ord -> false so that the ordering of the fcmps doesn't
matter.
rdar://11579835

llvm-svn: 158084
2012-06-06 17:22:40 +00:00
Jakob Stoklund Olesen
cf188ced7f Remove dead debug option -disable-rematerialization.
Remat has been stable for years, and it isn't done by
LiveIntervalAnalysis any longer. (See LiveRangeEdit).

llvm-svn: 158079
2012-06-06 16:22:41 +00:00
Duncan Sands
b2adcad612 Grab-bag of reassociate tweaks. Unify handling of dead instructions and
instructions to reoptimize.  Exploit this to more systematically eliminate
dead instructions (this isn't very useful in practice but is convenient for
analysing some testcase I am working on).  No need for WeakVH any more: use
an AssertingVH instead.

llvm-svn: 158073
2012-06-06 14:53:10 +00:00
Benjamin Kramer
f21f7146a3 Stop leaking RegScavengers from TailDuplication.
llvm-svn: 158069
2012-06-06 13:53:41 +00:00
Richard Barton
eedaf01042 Correct decoder for T1 conditional B encoding
llvm-svn: 158055
2012-06-06 09:12:53 +00:00
Duncan Sands
c8f5a6d2ac Add a new broken compiler.
llvm-svn: 158053
2012-06-06 07:39:39 +00:00
Craig Topper
8d23b98818 Mark several instructions SSE2 instead of SSE3 as they should be.
llvm-svn: 158049
2012-06-06 06:45:27 +00:00
Justin Holewinski
10ecba6fa8 Fix gtest build issue on Visual Studio 2012 RC
llvm-svn: 158046
2012-06-06 03:11:20 +00:00
Chad Rosier
a81f430388 Remove extraneous CHECK-NOTs from previous commit and add a new test case.
llvm-svn: 158045
2012-06-06 02:12:17 +00:00
Chad Rosier
71dda0c580 FileCheckize this test.
llvm-svn: 158044
2012-06-06 01:38:32 +00:00
Jakob Stoklund Olesen
f711a08709 Move LiveUnionArray into LiveIntervalUnion.h
It is useful outside RegAllocBase.

llvm-svn: 158041
2012-06-05 23:57:30 +00:00
Jakob Stoklund Olesen
def0fa547f Don't print register names in LiveIntervalUnion::print().
Soon we'll be making LiveIntervalUnions for register units as well.

This was the only place using the RepReg member, so just remove it.

llvm-svn: 158038
2012-06-05 23:07:19 +00:00
Matt Beaumont-Gay
b6f7234429 Suppress -Wunused-variable in -Asserts build
llvm-svn: 158037
2012-06-05 23:00:03 +00:00
Jakob Stoklund Olesen
12dac91467 Simplify LiveInterval::print().
Don't print out the register number and spill weight, making the TRI
argument unnecessary.

This allows callers to interpret the reg field. It can currently be a
virtual register, a physical register, a spill slot, or a register unit.

llvm-svn: 158031
2012-06-05 22:51:54 +00:00
Jakob Stoklund Olesen
f12252632a Add experimental support for register unit liveness.
Instead of computing a live interval per physreg, LiveIntervals can
compute live intervals per register unit. This makes impossible the
confusing situation where aliasing registers could have overlapping live
intervals. It should also make fixed interferernce checking cheaper
since registers have fewer register units than aliases.

Live intervals for regunits are computed on demand, using MRI use-def
chains and the new LiveRangeCalc class. Only regunits live in to ABI
blocks are precomputed during LiveIntervals::runOnMachineFunction().

The regunit liveness computations don't depend on LiveVariables.

llvm-svn: 158029
2012-06-05 22:02:15 +00:00
Jakob Stoklund Olesen
2ea0fd4346 Implement LiveRangeCalc::extendToUses() and createDeadDefs().
These LiveRangeCalc methods are to be used when computing a live range
from scratch.

llvm-svn: 158027
2012-06-05 21:54:09 +00:00
Andrew Trick
ef970569d5 MachineInstr::eraseFromParent fix for removing bundled instrs.
Patch by Ivan Llopard.

llvm-svn: 158025
2012-06-05 21:44:23 +00:00
Andrew Trick
24cce40009 misched: API for minimum vs. expected latency.
Minimum latency determines per-cycle scheduling groups.
Expected latency determines critical path and cost.

llvm-svn: 158021
2012-06-05 21:11:27 +00:00
Benjamin Kramer
14cfbf6563 Add 3.0 and 3.1 tags to the getting started guide.
llvm-svn: 158020
2012-06-05 20:35:50 +00:00
Lang Hames
30d8fb4deb Add a new intrinsic: llvm.fmuladd. This intrinsic represents a multiply-add
expression (a * b + c) that can be implemented as a fused multiply-add (fma)
if the target determines that this will be more efficient. This intrinsic
will be used to implement FP_CONTRACT support and an aggressive FMA formation
mode.

If your target has a fast FMA instruction you should override the
isFMAFasterThanMulAndAdd method in TargetLowering to return true.

llvm-svn: 158014
2012-06-05 19:07:46 +00:00
Yuan Lin
00b608400c Fix header file include order in NVPTX backend NV_CONTRIB
llvm-svn: 158013
2012-06-05 19:06:13 +00:00
Andrew Trick
e1d3e7543c LoopUnroll: always check for NULL LoopPassManager
llvm-svn: 158007
2012-06-05 17:51:05 +00:00
Jakob Stoklund Olesen
fa2f5b6a3f Remove dead function.
llvm-svn: 158005
2012-06-05 17:19:07 +00:00
Roman Divacky
f8e2e4beaa PPC32 uses R2 as the TLS register. Fix the copy and paste.
llvm-svn: 158004
2012-06-05 17:14:17 +00:00
Stepan Dyatkovskiy
37b3fe7fa7 IntegersSubsetMapping: added exclude operation, that allows to exclude subset of integers from current mapping.
llvm-svn: 157989
2012-06-05 07:57:36 +00:00
Stepan Dyatkovskiy
b0bae92021 IntegersSubsetMapping:
Changed type of Items collection: from std::vector to std::list.
Also some small fixes made in IntegersSubset.h, IntegersSubsetMapping.h and IntegersSubsetTest.cpp.

llvm-svn: 157987
2012-06-05 07:43:08 +00:00
Andrew Trick
6d6fa07808 X86 itinerary properties.
llvm-svn: 157981
2012-06-05 03:44:46 +00:00
Andrew Trick
80ddb55a53 ARM itinerary properties.
llvm-svn: 157980
2012-06-05 03:44:43 +00:00
Andrew Trick
e7159e6731 misched: Added MultiIssueItineraries.
This allows a subtarget to explicitly specify the issue width and
other properties without providing pipeline stage details for every
instruction.

llvm-svn: 157979
2012-06-05 03:44:40 +00:00
Andrew Trick
1ac2b63ec0 sdsched: Use the right heuristics when -mcpu is not provided and we have no itinerary.
Use ILP heuristics for long latency instrs if no scoreboard exists.

llvm-svn: 157978
2012-06-05 03:44:34 +00:00
Andrew Trick
85bf12c584 misched: Allow disabling scoreboard hazard checking for subtargets with a
valid itinerary but no pipeline stages.

An itinerary can contain useful scheduling information without specifying pipeline stages for each instruction.

llvm-svn: 157977
2012-06-05 03:44:32 +00:00
Andrew Trick
8b333df134 whitespace
llvm-svn: 157976
2012-06-05 03:44:29 +00:00
Andrew Trick
79a7c2d584 misched: comments from code review.
llvm-svn: 157975
2012-06-05 03:44:26 +00:00
Jakob Stoklund Olesen
4e37f536bf Remove the last remat-related code from LiveIntervalAnalysis.
Rematerialization is handled by LiveRangeEdit now.

llvm-svn: 157974
2012-06-05 01:06:15 +00:00
Jakob Stoklund Olesen
6e8c9ed65e Stop using LiveIntervals::isReMaterializable().
It is an old function that does a lot more than required by
CalcSpillWeights, which was the only remaining caller.

The isRematerializable() function never actually sets the isLoad
argument, so don't try to compute that.

llvm-svn: 157973
2012-06-05 01:06:12 +00:00
Joel Jones
6fb688ff18 Revert commit r157966
llvm-svn: 157972
2012-06-05 00:47:21 +00:00
Joel Jones
fdd5284d04 This change handles a another case for generating the bic instruction
when a compile time constant is known.  This occurs when implicitly zero 
extending function arguments from 16 bits to 32 bits.

<rdar://problem/11481151>

llvm-svn: 157966
2012-06-04 23:38:57 +00:00
Jakob Stoklund Olesen
04457a5cc7 Delete dead code.
llvm-svn: 157963
2012-06-04 23:01:41 +00:00
Rafael Espindola
f2cb55e405 When gvn decides to replace an instruction with another, we have to patch the
replacement to make it at least as generic as the instruction being replaced.
This includes:
* dropping nsw/nuw flags
* getting the least restrictive tbaa and fpmath metadata
* merging ranges

Fixes PR12979.

llvm-svn: 157958
2012-06-04 22:44:21 +00:00
Jakob Stoklund Olesen
17fcb85c11 Switch LiveIntervals member variable to LLVM naming standards.
No functional change.

llvm-svn: 157957
2012-06-04 22:39:14 +00:00
Jakob Stoklund Olesen
066df8f22f Pass context pointers to LiveRangeCalc::reset().
Remove the same pointers from all the other LiveRangeCalc functions,
simplifying the interface.

llvm-svn: 157941
2012-06-04 18:21:16 +00:00
Akira Hatanaka
c4d8a54531 Add a test case for mips64 unaligned load/store instructions.
llvm-svn: 157939
2012-06-04 17:57:06 +00:00
Akira Hatanaka
daaa398de8 Rename test/CodeGen/Mips/load-shift-left-right.ll.
llvm-svn: 157938
2012-06-04 17:50:36 +00:00
Akira Hatanaka
f860bcf5fc Fix a bug in MipsTargetLowering::LowerLOAD. A shift-right-logical node is
inserted after the shift-left-logical node.

llvm-svn: 157937
2012-06-04 17:46:29 +00:00
Roman Divacky
0daa2c0556 Implement local-exec TLS on PowerPC.
llvm-svn: 157935
2012-06-04 17:36:38 +00:00
Hans Wennborg
ff55c96bc2 MIPS TLS: use the model selected by TargetMachine::getTLSModel().
This was mostly done already in r156162, but I missed one place.

llvm-svn: 157929
2012-06-04 14:02:08 +00:00
Nadav Rotem
6969a673e9 Remove the "-promote-elements" flag. This flag is now enabled by default.
llvm-svn: 157925
2012-06-04 11:27:21 +00:00
Hans Wennborg
60ee5bbc4f Better comments for TLS-related X86 MachineOperand flags.
llvm-svn: 157920
2012-06-04 09:55:36 +00:00
Craig Topper
52bf0cfb27 Add intrinsic forms for FMA instructions to opcode folding tables.
llvm-svn: 157917
2012-06-04 07:46:16 +00:00
Duncan Sands
2f70cb3b88 getAllOnesValue also works for vectors of integers.
llvm-svn: 157915
2012-06-04 07:18:12 +00:00