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Commit Graph

1669 Commits

Author SHA1 Message Date
Akira Hatanaka
46c323ab23 [mips] Custom-legalize BR_JT.
In N64-static, GOT address is needed to compute the branch address.

llvm-svn: 176580
2013-03-06 21:32:03 +00:00
Akira Hatanaka
449c09d59d [mips] Remove android calling convention.
This calling convention was added just to handle functions which return vector
of floats. The fix committed in r165585 solves the problem.

llvm-svn: 176530
2013-03-05 23:22:30 +00:00
Akira Hatanaka
22fc44e180 [mips] Fix MipsCC::analyzeReturn so that, in soft-float mode, fp128 gets
returned in registers $2 and $4.

llvm-svn: 176527
2013-03-05 22:54:59 +00:00
Akira Hatanaka
583e235871 [mips] Fix MipsTargetLowering::LowerCallResult and LowerReturn to correctly
handle fp128 returns.

llvm-svn: 176523
2013-03-05 22:41:55 +00:00
Akira Hatanaka
50ca6f8bf7 [mips] Fix MipsTargetLowering::LowerCall to pass fp128 arguments in floating
point registers.

llvm-svn: 176521
2013-03-05 22:20:28 +00:00
Akira Hatanaka
5d48741407 [mips] Correct handling of fp128 (long double) formals and read long double
parameters from floating point registers if target is mips64 hard float.

llvm-svn: 176520
2013-03-05 22:13:04 +00:00
Akira Hatanaka
8d412f5a8a [mips] Print move instructions.
"move $4, $5" is printed instead of "or $4, $5, $zero".

llvm-svn: 176455
2013-03-04 22:25:01 +00:00
Jack Carter
44abaa390d Mips specific inline assembler constraint 'R'
'R' An address that can be sued in a non-macro load or store.
This patch includes a positive test case.

llvm-svn: 176452
2013-03-04 21:33:15 +00:00
Jia Liu
d8829e76b3 Mips ISD typo
llvm-svn: 176426
2013-03-04 01:06:54 +00:00
Akira Hatanaka
d2f7ed089c [mips] Fix inefficient code generation.
This patch eliminates the need to emit a constant move instruction when this
pattern is matched:

(select (setgt a, Constant), T, F)

The pattern above effectively turns into this:

(conditional-move (setlt a, Constant + 1), F, T)

llvm-svn: 176384
2013-03-01 21:52:08 +00:00
Akira Hatanaka
a064b57260 Fix indentation.
llvm-svn: 176380
2013-03-01 21:22:21 +00:00
Michael Liao
1e621fbd2f Fix PR10475
- ISD::SHL/SRL/SRA must have either both scalar or both vector operands
  but TLI.getShiftAmountTy() so far only return scalar type. As a
  result, backend logic assuming that breaks.
- Rename the original TLI.getShiftAmountTy() to
  TLI.getScalarShiftAmountTy() and re-define TLI.getShiftAmountTy() to
  return target-specificed scalar type or the same vector type as the
  1st operand.
- Fix most TICG logic assuming TLI.getShiftAmountTy() a simple scalar
  type.

llvm-svn: 176364
2013-03-01 18:40:30 +00:00
Akira Hatanaka
04b651d332 [mips] Remove unused option. Fix 80-column violations.
llvm-svn: 176330
2013-03-01 02:17:02 +00:00
Akira Hatanaka
9449ff1c6e [mips] Add the capability to search delay slot filling instructions in
successor basic blocks.

Currently this is off by default.

llvm-svn: 176329
2013-03-01 02:03:51 +00:00
Akira Hatanaka
b55d677ce5 [mips] Do not add SecondLastInst to list BranchInstrs if there is only one
terminator.

No functionality change.

llvm-svn: 176326
2013-03-01 01:22:26 +00:00
Akira Hatanaka
ec7322cdd6 [mips] Define an overloaded version of function MipsInstrInfo::AnalyzeBranchAdd.
This function will be used later when the capability to search delay slot
filling instructions in successor blocks is added. No intended functionality
changes.

llvm-svn: 176325
2013-03-01 01:10:17 +00:00
Akira Hatanaka
411670a07b [mips] Add options to disable searching backward and in successor blocks.
llvm-svn: 176321
2013-03-01 01:02:36 +00:00
Akira Hatanaka
01c253f718 [mips] Add capability to search in the forward direction for instructions that
can fill the delay slot.

Currently, this is off by default.

llvm-svn: 176320
2013-03-01 00:50:52 +00:00
Akira Hatanaka
a433f695dd [mips] Define helper function searchRange
No functionality change.

llvm-svn: 176318
2013-03-01 00:26:14 +00:00
Akira Hatanaka
99e76c0e98 [mips] Rename function findDelayInstr to searchBackward.
llvm-svn: 176317
2013-03-01 00:20:16 +00:00
Akira Hatanaka
581402232c [mips] Define class MemDefsUses.
This class tracks dependence between memory instructions using underlying
objects of memory operands. 

llvm-svn: 176313
2013-03-01 00:16:31 +00:00
Reed Kotler
fc840cf992 Fix cut/paste error in a comment.
llvm-svn: 176165
2013-02-27 04:20:14 +00:00
Reed Kotler
ffc8d6b3af Add the skeleton for the Mips constant island pass.
It will only be used for Mips 16 at this time.
 

llvm-svn: 176161
2013-02-27 03:33:58 +00:00
Akira Hatanaka
02e5e13e00 [mips] Use class RegDefsUses to track register defs and uses.
No functionality change.

llvm-svn: 176070
2013-02-26 01:30:05 +00:00
Reed Kotler
4ca11e6b77 Make pseudos FEXT_CCRX16_ins and FEXT_CCRXI16_ins into custom emitters.
llvm-svn: 176007
2013-02-25 02:25:47 +00:00
Reed Kotler
563b04a97f Make psuedo FEXT_T8I816_ins into a custom emitter.
llvm-svn: 176002
2013-02-24 23:17:51 +00:00
Reed Kotler
407e5b31f6 Make psuedo FEXT_T8I816_ins a custom inserter. It should be expanded
as early as possible; which means during instruction selection.

llvm-svn: 175984
2013-02-24 06:16:39 +00:00
Reed Kotler
041e721f3f Add new base instruction def for cmpi, cmp, slt and sltu so that def/uses
proper. Fixed this already a few days ago for slti.

llvm-svn: 175975
2013-02-23 23:37:03 +00:00
Reed Kotler
65cb21ddd8 Expand pseudos/macros for Selt. This is the last of the complex
macros.The rest is some small misc. stuff.

llvm-svn: 175950
2013-02-23 03:09:56 +00:00
Akira Hatanaka
8f0f207217 [mips] Emit call16 operator instead of got_disp. The former allows lazy binding.
llvm-svn: 175920
2013-02-22 21:10:03 +00:00
Reed Kotler
4c5ff1c30b Fix a nomenclature mistake. Slt->Slti in the functions. The "i" refers
to the immediate operand of sli or cmp function.

llvm-svn: 175865
2013-02-22 05:59:39 +00:00
Reed Kotler
340c9d39ce Expand mips16 SelT form pseudso/macros.
llvm-svn: 175862
2013-02-22 05:10:51 +00:00
Eli Bendersky
37f247b8d8 Move the eliminateCallFramePseudoInstr method from TargetRegisterInfo
to TargetFrameLowering, where it belongs. Incidentally, this allows us
to delete some duplicated (and slightly different!) code in TRI.

There are potentially other layering problems that can be cleaned up
as a result, or in a similar manner.

The refactoring was OK'd by Anton Korobeynikov on llvmdev.

Note: this touches the target interfaces, so out-of-tree targets may
be affected.

llvm-svn: 175788
2013-02-21 20:05:00 +00:00
Reed Kotler
276bb6b70b Expand the sel pseudo/macro. This generates basic blocks where previously
there were inline br .+4 instructions. Soon everything can enjoy the
full instruction scheduling experience.

llvm-svn: 175718
2013-02-21 04:22:38 +00:00
Jack Carter
0f776a392d Mips specific standalone assembler addressing mode %hi and %lo.
The constructs %hi() and %lo() represent the high and low 16 
bits of the address. 
Because the 16 bit offset field of an LW instruction is 
interpreted as signed, if bit 15 of the low part is 1 then the 
low part will act as a negative and 1 needs to be added to the 
high part.

Contributer: Vladimir Medic
llvm-svn: 175707
2013-02-21 02:09:31 +00:00
Jack Carter
aeecb81472 ELF symbol table field st_other support,
excluding visibility bits.

Mips specific standalone assembler directive "set at".

This directive changes the general purpose register
that the assembler will use when given the symbolic
register name $at.

This does not include negative testing. That will come
in a future patch.

A side affect of this patch recognizes the different 
GPR register names for temporaries between old abi
and new abi so a test case for that is included.

Contributer: Vladimir Medic
llvm-svn: 175686
2013-02-20 23:11:17 +00:00
Jim Grosbach
89c0252c2a MCParser: Update method names per coding guidelines.
s/AddDirectiveHandler/addDirectiveHandler/
s/ParseMSInlineAsm/parseMSInlineAsm/
s/ParseIdentifier/parseIdentifier/
s/ParseStringToEndOfStatement/parseStringToEndOfStatement/
s/ParseEscapedString/parseEscapedString/
s/EatToEndOfStatement/eatToEndOfStatement/
s/ParseExpression/parseExpression/
s/ParseParenExpression/parseParenExpression/
s/ParseAbsoluteExpression/parseAbsoluteExpression/
s/CheckForValidSection/checkForValidSection/

http://llvm.org/docs/CodingStandards.html#name-types-functions-variables-and-enumerators-properly

No functional change intended.

llvm-svn: 175675
2013-02-20 22:21:35 +00:00
Jim Grosbach
233487d8a2 Update TargetLowering ivars for name policy.
http://llvm.org/docs/CodingStandards.html#name-types-functions-variables-and-enumerators-properly

ivars should be camel-case and start with an upper-case letter. A few in
TargetLowering were starting with a lower-case letter.

No functional change intended.

llvm-svn: 175667
2013-02-20 21:13:59 +00:00
David Blaikie
229d653426 Fix the (clang -Werror) build by removing an unused member variable.
llvm-svn: 175607
2013-02-20 07:39:18 +00:00
Reed Kotler
030e941124 Expand pseudos/macros:
SltCCRxRy16, SltiCCRxImmX16, SltiuCCRxImmX16, SltuCCRxRy16
$T8 shows up as register $24 when emitted from C++ code so we had
to change some tests that were already there for this functionality.

llvm-svn: 175593
2013-02-20 05:45:15 +00:00
Jack Carter
ecca606341 ELF symbol table field st_other support,
excluding visibility bits.

Mips (o32 abi) specific e_header setting.

EF_MIPS_ABI_O32 needs to be set in the 
ELF header flags for o32 abi output.

Contributer: Reed Kotler
llvm-svn: 175569
2013-02-19 22:29:00 +00:00
Jack Carter
9b85d941b3 ELF symbol table field st_other support,
excluding visibility bits.

Mips (Mips16) specific e_header setting.

EF_MIPS_ARCH_ASE_M16 needs to be set in the 
ELF header flags for Mips16.

Contributer: Reed Kotler
llvm-svn: 175566
2013-02-19 22:14:34 +00:00
Jack Carter
3c286a1400 ELF symbol table field st_other support,
excluding visibility bits.

Mips (MicroMips) specific STO handling .

The st_other field settig for STO_MIPS_MICROMIPS

Contributer: Zoran Jovanovic
llvm-svn: 175564
2013-02-19 22:04:37 +00:00
Reed Kotler
d849980705 Expand pseudos/macros BteqzT8SltiX16, BteqzT8SltiuX16,
BtnezT8SltiX16, BtnezT8SltiuX16 .

llvm-svn: 175486
2013-02-19 03:56:57 +00:00
Reed Kotler
7ddfd1de27 Expand pseudos BteqzT8CmpiX16 and BtnezT8CmpiX16.
llvm-svn: 175474
2013-02-19 00:20:58 +00:00
Reed Kotler
a23b2388d3 Expand macro/pseudo instructions BtnezT8SltX16 and BtnezT8SltuX16.
llvm-svn: 175420
2013-02-18 05:43:03 +00:00
Reed Kotler
8b4a359a59 Expand pseudo/macro BteqzT8SltuX16 . There is no test case because
at this time, llvm is generating a different but equivalent pattern
that would lead to this instruction. I am trying to think of a way
to get it to generate this. If I can't, I may just remove the pseudo.

llvm-svn: 175419
2013-02-18 04:55:38 +00:00
Reed Kotler
8e9b3f2984 Expand pseudo/macro BteqzT8SltX16.
llvm-svn: 175417
2013-02-18 04:04:26 +00:00
Reed Kotler
6faf1b4290 Expand macro/pseudo BteqzT8CmpX16.
llvm-svn: 175416
2013-02-18 03:06:29 +00:00
Reed Kotler
1ca4a75d36 Beginning of expanding all current mips16 macro/pseudo instruction sequences.
This expansion will be moved to expandISelPseudos as soon as I can figure
out how to do that. There are other instructions which use this 
ExpandFEXT_T8I816_ins and as soon as I have finished expanding them all,
I will delete the macro asm string text so it has no way to be used
in the future.

llvm-svn: 175413
2013-02-18 00:59:04 +00:00
Reed Kotler
293d612060 Clean up mips16 td file in preparation for massive pseudo lowering work.
llvm-svn: 175379
2013-02-16 23:39:52 +00:00
Reed Kotler
b11fbb0482 One more try to make this look nice. I have lots of pseudo lowering
as well as 16/32 bit variants to do and so I want this to look nice
when I do it. I've been experimenting with this. No new test cases
are needed.

llvm-svn: 175369
2013-02-16 19:04:29 +00:00
Reed Kotler
bb9242df63 Use a different scheme to chose 16/32 variants. This scheme is more
consistent with how BuildMI works. No new tests needed. All should work
the same as before.

llvm-svn: 175342
2013-02-16 09:47:57 +00:00
Akira Hatanaka
a41e42d732 [mips] Remove SDNPWantParent from the list of SDNodeProperties.
No functionality change intended.

llvm-svn: 175325
2013-02-16 00:14:37 +00:00
Akira Hatanaka
e4891fab6f [mips] Clean up class MipsCCInfo.
No functionality change intended.

llvm-svn: 175310
2013-02-15 21:45:11 +00:00
Akira Hatanaka
ce499bc633 [mips] Split SelectAddr, which was used to match address patterns, into two
functions. Set AddedComplexity to determine the order in which patterns are
matched.

This simplifies selection of floating point loads/stores.

No functionality change intended.

llvm-svn: 175300
2013-02-15 21:20:45 +00:00
Reed Kotler
fd49e54baf Remove a final dependency on the form field in tablegen; which is a remnant
of the old jit and which we don't intend to support in mips16 or micromips.
This dependency is for the testing of whether an instruction is a pseudo.

llvm-svn: 175297
2013-02-15 21:05:58 +00:00
Reed Kotler
45e1076551 Fix minor mips16 issues in directives for function prologue. Probably this does
not matter but makes it more gcc compatible which avoids possible subtle
problems. Also, turned back on a disabled check in helloworld.ll. 

llvm-svn: 175237
2013-02-15 01:04:38 +00:00
Akira Hatanaka
3bea5ea392 [mips] Disallow moving load/store instructions past volatile instructions.
Unfortunately, I wasn't able to create a test case that demonstrates the
problem I was trying to fix with this patch.

llvm-svn: 175226
2013-02-14 23:54:40 +00:00
Akira Hatanaka
592ad108fa [mips] Replace usage of SmallSet with BitVector, which is used to keep track of
defined and used registers. Also add a few helper functions to simplify the
code. 

llvm-svn: 175224
2013-02-14 23:40:57 +00:00
Akira Hatanaka
78e6c7fa42 [mips] Fix comments and coding style violations. Declare functions to be const.
llvm-svn: 175222
2013-02-14 23:20:15 +00:00
Akira Hatanaka
845f839577 [mips] Simplify code in function Filler::findDelayInstr.
1. Define and use function terminateSearch.
2. Use MachineBasicBlock::iterator instead of MachineBasicBlock::instr_iterator.
3. Delete the line which checks whether an instruction is a pseudo. 

llvm-svn: 175219
2013-02-14 23:11:24 +00:00
Reed Kotler
7545d4833e Remove the form field from Mips16 instruction formats and set things
up so that we can apply the direct object emitter patch. This patch
should be a nop right now and it's test is to not break what is already
there.
 

llvm-svn: 175126
2013-02-14 03:05:25 +00:00
Reed Kotler
c0c9bb9263 For Mips 16, add the optimization where the 16 bit form of addiu sp can be used
if the offset fits in 11 bits. This makes use of the fact that the abi
requires sp to be 8 byte aligned so the actual offset can fit in 8
bits. It will be shifted left and sign extended before being actually used.
The assembler or direct object emitter will shift right the 11 bit
signed field by 3 bits. We don't need to deal with that here.

llvm-svn: 175073
2013-02-13 20:28:27 +00:00
Reed Kotler
49229780c8 Make jumptables work for -static
llvm-svn: 175044
2013-02-13 08:32:14 +00:00
Akira Hatanaka
10788fa4a6 [mips] Expand pseudo instructions before they are emitted in
MipsCodeEmitter.cpp.

JALR and NOP are expanded by function emitPseudoExpansionLowering, which is not
called when the old JIT is used.

This fixes the following tests which have been failing on
llvm-mips-linux builder:

LLVM :: ExecutionEngine__2003-01-04-LoopTest.ll
LLVM :: ExecutionEngine__2003-05-06-LivenessClobber.ll
LLVM :: ExecutionEngine__2003-06-04-bzip2-bug.ll
LLVM :: ExecutionEngine__2005-12-02-TailCallBug.ll
LLVM :: ExecutionEngine__2003-10-18-PHINode-ConstantExpr-CondCode-Failure.ll
LLVM :: ExecutionEngine__hello2.ll
LLVM :: ExecutionEngine__stubs.ll
LLVM :: ExecutionEngine__test-branch.ll
LLVM :: ExecutionEngine__test-call.ll
LLVM :: ExecutionEngine__test-common-symbols.ll
LLVM :: ExecutionEngine__test-loadstore.ll
LLVM :: ExecutionEngine__test-loop.ll

llvm-svn: 174912
2013-02-11 22:35:40 +00:00
Akira Hatanaka
23e95ae884 [mips] Fix indentation.
llvm-svn: 174907
2013-02-11 22:03:52 +00:00
Reed Kotler
fbd845c0d9 Add the 16 bit version of addiu. To the assembler, the 16 and 32 bit are the
same so we put in the comment field an indicator when we think we are
emitting the 16 bit version. For the direct object emitter, the difference is 
important as well as for other passes which need an accurate count of 
program size. There will be other similar putbacks to this for various
instructions.

llvm-svn: 174747
2013-02-08 21:42:56 +00:00
Reed Kotler
434681ac07 When Mips16 frames grow large, the immediate field may exceed the maximum
allowed size for the instruction. This code uses RegScavenger to fix this.
We sometimes need 2 registers for Mips16 so we must handle things
differently than how register scavenger is normally used.

llvm-svn: 174696
2013-02-08 03:57:41 +00:00
Akira Hatanaka
6ea6486f83 [mips] Make Filler a class and reduce indentation.
llvm-svn: 174666
2013-02-07 21:32:32 +00:00
Akira Hatanaka
a989d1f25d [mips] Add definition of JALR instruction which has two register operands. Change the
original JALR instruction with one register operand to be a pseudo-instruction.

llvm-svn: 174657
2013-02-07 19:48:00 +00:00
Reed Kotler
8ac7f84606 Make sure we call externals from libraries properly when -static.
For example, when we are doing mips16 hard float or soft float.

llvm-svn: 174583
2013-02-07 04:34:51 +00:00
Reed Kotler
b3d71de768 Enable jumps when in -static mode.
llvm-svn: 174580
2013-02-07 03:49:51 +00:00
Akira Hatanaka
9a19eb22dc [mips] Make NOP a pseudo instruction and expand it to "sll $zero, $zero, 0".
llvm-svn: 174546
2013-02-06 21:50:15 +00:00
Akira Hatanaka
df9480569b [mips] Do not use function CC_MipsN_VarArg unless the function being analyzed
is a vararg function.

The original code was examining flag OutputArg::IsFixed to determine whether
CC_MipsN_VarArg or CC_MipsN should be called. This is not correct, since this
flag is often set to false when the function being analyzed is a non-variadic
function.

llvm-svn: 174442
2013-02-05 21:18:11 +00:00
Jakob Stoklund Olesen
64c46c380e Move MRI liveouts to Mips return instructions.
llvm-svn: 174410
2013-02-05 18:12:03 +00:00
Jack Carter
10d56b481a This patch that sets the Mips ELF header flag for
MicroMips architectures. 

Contributer: Zoran Jovanovic
 
llvm-svn: 174360
2013-02-05 09:30:03 +00:00
Jack Carter
3dfa61ae2c This patch that sets the EmitAlias flag in td files
and enables the instruction printer to print aliased 
instructions. 

Due to usage of RegisterOperands a change in common 
code (utils/TableGen/AsmWriterEmitter.cpp) is required 
to get the correct register value if it is a RegisterOperand.

Contributer: Vladimir Medic
 
llvm-svn: 174358
2013-02-05 08:32:10 +00:00
Jack Carter
76ef2c7e2c This patch changes a static_cast to dyn_cast
for MipsELFStreamer objects.

Contributer: Jack Carter
 
llvm-svn: 174354
2013-02-05 07:47:41 +00:00
Reed Kotler
fcde15ab12 Start static relocation implementation for mips16.
This checkin makes hello world work. 

llvm-svn: 174264
2013-02-02 04:07:35 +00:00
Chad Rosier
ebbd4433e6 [PEI] Pass the frame index operand number to the eliminateFrameIndex function.
Each target implementation was needlessly recomputing the index.
Part of rdar://13076458

llvm-svn: 174083
2013-01-31 20:02:54 +00:00
David Blaikie
23205ae0d0 Removing initializer for the field removed in r173887
llvm-svn: 173888
2013-01-30 03:04:07 +00:00
David Blaikie
db3dd167f9 Remove unused variable (introduced in r173884) to clear clang -Werror build
llvm-svn: 173887
2013-01-30 02:56:02 +00:00
Jack Carter
0d5645b2e3 Forgot to add new file to CMakeLists
llvm-svn: 173886
2013-01-30 02:32:36 +00:00
Jack Carter
9054213d30 This patch implements runtime Mips specific
setting of ELF header e_flags.

Contributer: Jack Carter
 
llvm-svn: 173884
2013-01-30 02:16:36 +00:00
Jack Carter
7cd7b1f749 This patch reworks how llvm targets set
and update ELF header e_flags.

Currently gathering information such as symbol, 
section and data is done by collecting it in an 
MCAssembler object. From MCAssembler and MCAsmLayout 
objects ELFObjectWriter::WriteObject() forms and 
streams out the ELF object file.

This patch just adds a few members to the MCAssember 
class to store and access the e_flag settings. It 
allows for runtime additions to the e_flag by 
assembler directives. The standalone assembler can 
get to MCAssembler from getParser().getStreamer().getAssembler().

This patch is the generic infrastructure and will be
followed by patches for ARM and Mips for their target 
specific use.

Contributer: Jack Carter
 
llvm-svn: 173882
2013-01-30 02:09:52 +00:00
Akira Hatanaka
553d261207 [mips] Lower EH_RETURN.
Patch by Sasa Stankovic.

llvm-svn: 173862
2013-01-30 00:26:49 +00:00
Evan Cheng
2e2cde560f Teach SDISel to combine fsin / fcos into a fsincos node if the following
conditions are met:
1. They share the same operand and are in the same BB.
2. Both outputs are used.
3. The target has a native instruction that maps to ISD::FSINCOS node or
   the target provides a sincos library call.

Implemented the generic optimization in sdisel and enabled it for
Mac OSX. Also added an additional optimization for x86_64 Mac OSX by
using an alternative entry point __sincos_stret which returns the two
results in xmm0 / xmm1.

rdar://13087969
PR13204

llvm-svn: 173755
2013-01-29 02:32:37 +00:00
Craig Topper
493bcfb933 Remove addToNoHelperNeeded function that was left unused after r173649. Fixes a -Wunused warning.
llvm-svn: 173664
2013-01-28 06:09:24 +00:00
Reed Kotler
99a57ba847 Make some code a little simpler.
llvm-svn: 173649
2013-01-28 02:46:49 +00:00
Reed Kotler
bcf0501249 fix use of std::std. it's ordered set.
llvm-svn: 173563
2013-01-26 06:58:35 +00:00
Jack Carter
26eec3af74 This patch implements parsing the .word
directive for the Mips assembler.

Contributer: Vladimir Medic
 
llvm-svn: 173407
2013-01-25 01:31:34 +00:00
Akira Hatanaka
6866b6da71 [mips] Set flag neverHasSideEffects flag on some of the floating point instructions.
llvm-svn: 173401
2013-01-25 00:20:39 +00:00
NAKAMURA Takumi
d6161ccf43 MipsISelLowering.cpp: Fill unreachable paths to fix warnings. [-Wsometimes-uninitialized]
FIXME: Could they, unreachable(s), be removed?
FIXME: I could prefer the coding standards...
llvm-svn: 173325
2013-01-24 06:08:06 +00:00
NAKAMURA Takumi
c67d03e39b MipsISelLowering.cpp: Fix a warning, take two. [-Wunused-variable]
...and fix a typo, s/#ifdef/#ifndef/

llvm-svn: 173324
2013-01-24 05:54:23 +00:00
NAKAMURA Takumi
420b657110 MipsISelLowering.cpp: Fix a warning. [-Wunused-variable]
llvm-svn: 173323
2013-01-24 05:47:29 +00:00
Reed Kotler
c2b44a1250 The next phase of Mips16 hard float implementation.
Allow Mips16 routines to call Mips32 routines that have abi requirements
that either arguments or return values are passed in floating point 
registers. This handles only the pic case. We have not done non pic
for Mips16 yet in any form.

The libm functions are Mips32, so with this addition we have a complete
Mips16 hard float implementation.

We still are not able to complete mix Mip16 and Mips32 with hard float.
That will be the next phase which will have several steps. For Mips32
to freely call Mips16 some stub functions must be created.

llvm-svn: 173320
2013-01-24 04:24:02 +00:00
Eli Bendersky
9e87cb51e6 Clean up assignment of CalleeSaveStackSlotSize: get rid of the default and explicitly set this in every target that needs to change it from the default.
llvm-svn: 173270
2013-01-23 16:22:04 +00:00
Akira Hatanaka
80ebf0332e [mips] Implement MipsRegisterInfo::getRegPressureLimit.
llvm-svn: 173197
2013-01-22 21:34:25 +00:00
Akira Hatanaka
390115c18e [mips] Clean up code in MipsTargetLowering::LowerCall. No functional change
intended

llvm-svn: 173189
2013-01-22 20:05:56 +00:00