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153 Commits

Author SHA1 Message Date
Chad Rosier
42837769dc Revert r152202 as it's causing internal buildbot failures. 
Original commit message:
Use uint16_t to store InstrNameIndices in MCInstrInfo. Add asserts to protect 
all 16-bit string table offsets. Also make sure the string to offset table 
string is not larger than 65536 characters since larger string literals aren't 
portable.

llvm-svn: 152233
 2012-03-07 17:06:40 +00:00
Craig Topper
42ddd0840a Use uint16_t to store InstrNameIndices in MCInstrInfo. Add asserts to protect all 16-bit string table offsets. Also make sure the string to offset table string is not larger than 65536 characters since larger string literals aren't portable. 
llvm-svn: 152202
 2012-03-07 05:17:23 +00:00
Craig Topper
86f61a903c Use uint16_t to store indices into string table since C++ only allows 64K string literals so the index into the big string can never be larger than that. 
llvm-svn: 152105
 2012-03-06 06:04:39 +00:00
Craig Topper
dfa8617ab9 Convert assert(0) to llvm_unreachable 
llvm-svn: 149814
 2012-02-05 07:21:30 +00:00
David Blaikie
8d47bb30e3 Remove unnecessary default cases in switches that cover all enum values. 
llvm-svn: 147855
 2012-01-10 16:47:17 +00:00
Jim Grosbach
2ac98a24aa ARM parsing datatype suffix variants for fixed-writeback VLD1/VST1 instructions. 
rdar://10435076

llvm-svn: 144606
 2011-11-15 01:46:57 +00:00
Jakob Stoklund Olesen
c36b745e2e TableGen: Privatize CodeGenRegisterClass::TheDef and Name. 
When TableGen starts creating its own register classes, the synthesized
classes won't have a Record reference.  All register classes must have a
name, though.

llvm-svn: 141081
 2011-10-04 15:28:08 +00:00
Peter Collingbourne
01246536d9 Move TableGen's parser and entry point into a library 
This is the first step towards splitting LLVM and Clang's tblgen executables.

llvm-svn: 140951
 2011-10-01 16:41:13 +00:00
Jakob Stoklund Olesen
d7b6708541 Switch to ArrayRef<CodeGenRegisterClass*>. 
This makes it possible to allocate CodeGenRegisterClass instances
dynamically and reorder them.

llvm-svn: 140816
 2011-09-29 22:28:37 +00:00
Evan Cheng
1112260be0 Remove the AsmWriterEmitter (unused) feature that rely on TargetSubtargetInfo. 
llvm-svn: 134457
 2011-07-06 02:02:33 +00:00
Francois Pichet
f9f38d8d73 Change AsmName's type from StringRef to std::string. AsmName was pointing to a temporary string object that was destroyed. This is undefined behavior and MSVC didn't like it. 
This fixes over 300+ failing tests on MSVC.
Credit for this fix goes to chapuni.

llvm-svn: 134064
 2011-06-29 11:25:34 +00:00
Owen Anderson
c1dcf312d1 Add support for alternative register names, useful for instructions whose operands are logically equivalent to existing registers, but happen to be printed specially. For example, an instruciton that prints d0[0] instead of s0. 
Patch by Jim Grosbach.

llvm-svn: 133940
 2011-06-27 21:06:21 +00:00
Jim Grosbach
cfcba2d22b Consolidate some TableGen diagnostic helper functions. 
TableGen had diagnostic printers sprinkled about in a few places. Pull them
together into a single location in Error.cpp.

llvm-svn: 133568
 2011-06-21 22:55:50 +00:00
Jakob Stoklund Olesen
f190283688 Store CodeGenRegisters as pointers so they won't be reallocated. 
Reuse the CodeGenRegBank DenseMap in a few places that would build their
own or use linear search.

llvm-svn: 133333
 2011-06-18 04:26:06 +00:00
Jakob Stoklund Olesen
4d17793443 Give CodeGenRegisterClass a real sorted member set. 
Make the Elements vector private and expose an ArrayRef through
getOrder() instead. getOrder will eventually provide multiple
user-specified allocation orders.

Use the sorted member set for member and subclass tests. Clean up a lot
of ad hoc searches.

llvm-svn: 133040
 2011-06-15 04:50:36 +00:00
Bill Wendling
5ae6b0c972 Improve the heuristic to emit the alias if the number of hard-coded registers 
are also greater than the alias.

llvm-svn: 133038
 2011-06-15 04:31:19 +00:00
Bill Wendling
77d4d62693 Heuristic: If the number of operands in the alias are more than the number of 
operands in the aliasee, don't print the alias.

llvm-svn: 132963
 2011-06-14 03:17:20 +00:00
Bill Wendling
6f30676150 Use a more efficient data structure for the "operand map". The number of 
operands to an instruction aren't great, so an iterative search is fairly quick
and doesn't have the overhead of std::map.

llvm-svn: 131886
 2011-05-23 00:18:33 +00:00
Eric Christopher
bd8bbe5934 Invert the meaning of printAliasInstr's return value. It now returns 
true on success and false on failure. Update callers.

llvm-svn: 129722
 2011-04-18 21:28:11 +00:00
Bill Wendling
500b41a7a5 Add an option to not print the alias of an instruction. It defaults to "print 
the alias".

llvm-svn: 129485
 2011-04-13 23:36:21 +00:00
Bill Wendling
fafa0c2509 Only emit the AvailableFeatures variable if it's used. 
llvm-svn: 129124
 2011-04-08 04:08:57 +00:00
Bill Wendling
342ba5c4b6 Replace the old algorithm that emitted the "print the alias for an instruction" 
with the newer, cleaner model. It uses the IAPrinter class to hold the
information that is needed to match an instruction with its alias. This also
takes into account the available features of the platform.

There is one bit of ugliness. The way the logic determines if a pattern is
unique is O(N**2), which is gross. But in reality, the number of items it's
checking against isn't large. So while it's N**2, it shouldn't be a massive time
sink.

llvm-svn: 129110
 2011-04-07 21:20:06 +00:00
Bill Wendling
52c4596a0f Call static functions so that they aren't left unused. 
llvm-svn: 128020
 2011-03-21 21:08:27 +00:00
Bill Wendling
9adf1c9edd A WIP commit of the InstAlias printing cleanup. This code will soon replace the 
code below it. Even though it looks very similar, it will match more precisely
and geneate better functions in the long run.

llvm-svn: 127991
 2011-03-21 08:59:17 +00:00
Bill Wendling
4cdb29548b Add the IAPrinter class. 
This is a helper class that will make it easier to say which InstAliases can be
printed and which cannot (because of ambiguity).

llvm-svn: 127990
 2011-03-21 08:40:31 +00:00
Bill Wendling
e3b0820ad4 * Add classes that support the "feature" information. 
* Move the code that emits the reg in reg class matching into its own function.

llvm-svn: 127988
 2011-03-21 08:31:53 +00:00
Bill Wendling
91cce6cc1d A new TableGen feature! (Not turned on just yet.) 
InstAlias<{alias}, {aliasee}>;

The InstAlias instruction should be able to go from the MCInst to the
{alias}. All of the information is there to match the MCInst with the
{aliasee}. From there, it's a simple matter to emit the {alias}, with the
correct operands from the {aliasee}.

The code this patch generates can be used by the InstPrinter to automatically
print out the alias without having to write special C++ code to handle the
situation.

This is a WIP, and therefore are several limitations. For instance, it cannot
handle AsmOperands at the moment. It also doesn't know what to do when two
{alias}es match the same {aliasee}. (Currently, it just ignores those two cases
and allows the printInstruction method to handle them.)

llvm-svn: 126538
 2011-02-26 03:09:12 +00:00
Chris Lattner
8e4bbafeb3 eliminate the Records global variable, patch by Garrison Venn! 
llvm-svn: 121659
 2010-12-13 00:23:57 +00:00
Jim Grosbach
046ae5dbac Let a target specify whether it wants an assembly printer to be the MC version 
or not. TableGen needs to generate the printInstruction() function as taking
an MCInstr* or a MachineInstr*, depending. Default to the old non-MC
version so that everything not yet using MC continues to just work without
fidding.

llvm-svn: 115126
 2010-09-30 01:29:54 +00:00
Jim Grosbach
7e54b358bd trailing whitespace 
llvm-svn: 115096
 2010-09-29 22:32:50 +00:00
Eric Christopher
8b626a2da9 Handle the odd case where we only have one instruction. 
llvm-svn: 114293
 2010-09-18 18:50:27 +00:00
Bill Wendling
16742654a6 Update comment. 
llvm-svn: 108571
 2010-07-16 23:10:00 +00:00
Chris Lattner
cdbca3e8fe change a ton of code to not implicitly use the "O" raw_ostream 
member of AsmPrinter.  Instead, pass it in explicitly.

llvm-svn: 100306
 2010-04-04 04:47:45 +00:00
Chris Lattner
3f22bdc032 make inst_begin/inst_end iterate over InstructionsByEnumValue. 
Use CodeGenTarget::getInstNamespace in one place and fix it.

llvm-svn: 98915
 2010-03-19 01:00:55 +00:00
Chris Lattner
42d67226c5 revert 98912 
llvm-svn: 98914
 2010-03-19 00:50:47 +00:00
Chris Lattner
f0beb5287b make inst_begin/inst_end iterate over InstructionsByEnumValue. 
llvm-svn: 98912
 2010-03-19 00:40:22 +00:00
Chris Lattner
b929ca1352 change Target.getInstructionsByEnumValue to return a reference 
to a vector that CGT stores instead of synthesizing it on every 
call.

llvm-svn: 98910
 2010-03-19 00:34:35 +00:00
Chris Lattner
fcce3c5ee4 enhance llvm-mc -show-inst to print the enum of an instruction, like so: 
testb	%al, %al                ## <MCInst #2412 TEST8rr
                                        ##   <MCOperand Reg:2>
                                        ##   <MCOperand Reg:2>>
	jne	LBB1_7                  ## <MCInst #938 JNE_1
                                        ##   <MCOperand Expr:(LBB1_7)>>

llvm-svn: 95935
 2010-02-11 22:57:32 +00:00
Sean Callanan
c1249e600e Fixed some indentation in the AsmWriterInst 
implementation.  Also changed the constructor
so that it does not require a Record, making it
usable by the EDEmitter.

llvm-svn: 95715
 2010-02-09 23:06:35 +00:00
Sean Callanan
1248c51819 Per PR 6219, factored AsmWriterInst and AsmWriterOperand 
out of the AsmWriterEmitter.  This patch does the physical
code movement, but leaves the implementation unchanged. I'll
make any changes necessary to generalize the code in a
separate patch.

llvm-svn: 95697
 2010-02-09 21:50:41 +00:00
Chris Lattner
cd07a3a0b7 sink handling of target-independent machine instrs (other 
than DEBUG_VALUE :(  ) into the target indep AsmPrinter.cpp
file.   This allows elimination of the 
NO_ASM_WRITER_BOILERPLATE hack among other things.

llvm-svn: 95177
 2010-02-03 01:00:52 +00:00
Dan Gohman
35331c1dcd Don't print a redundant tab for inline asm, and do use the new printKill. 
llvm-svn: 86206
 2009-11-06 00:19:43 +00:00
Daniel Dunbar
b67b5bb0b1 Move UnescapeString to a static function for its sole client; its inefficient and broken. 
llvm-svn: 84358
 2009-10-17 20:43:42 +00:00
Jakob Stoklund Olesen
31fcbdefbb Introduce the TargetInstrInfo::KILL machine instruction and get rid of the 
unused DECLARE instruction.

KILL is not yet used anywhere, it will replace TargetInstrInfo::IMPLICIT_DEF
in the places where IMPLICIT_DEF is just used to alter liveness of physical
registers.

llvm-svn: 83006
 2009-09-28 20:32:26 +00:00
Chris Lattner
d600c9342b add a comment. 
llvm-svn: 82236
 2009-09-18 18:10:19 +00:00
Chris Lattner
c87179b542 slightly increase prettiness. 
llvm-svn: 81742
 2009-09-14 01:27:50 +00:00
Chris Lattner
c4a64a08ec emit the register table as a massive string to avoid relocations. 
llvm-svn: 81741
 2009-09-14 01:26:18 +00:00
Chris Lattner
d823d97b3a move StringToOffsetTable out to its own header. 
llvm-svn: 81740
 2009-09-14 01:19:16 +00:00
Chris Lattner
68ed8d21f8 factor string table generation out to its own class. This changes 
the encoding of the AsmStrs table saving a byte or two.

llvm-svn: 81739
 2009-09-14 01:16:36 +00:00
Chris Lattner
20b7392123 the tblgen produced 'getRegisterName' method does not access 
the object, make it static instead of const.

llvm-svn: 81711
 2009-09-13 20:19:22 +00:00