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Commit Graph

43 Commits

Author SHA1 Message Date
Craig Topper
76f7896f49 Prune some includes and forward declarations.
llvm-svn: 153429
2012-03-26 06:58:25 +00:00
Jakob Stoklund Olesen
3d62f52b22 Encode register class constreaints in inline asm instructions.
The inline asm operand constraint is initially encoded in the virtual
register for the operand, but that register class may change during
coalescing, and the original constraint is lost.

Encode the original register class as part of the flag word for each
inline asm operand.  This makes it possible to recover the actual
constraint required by inline asm, just like we can for normal
instructions.

llvm-svn: 141833
2011-10-12 23:37:29 +00:00
Chris Lattner
e1fe7061ce land David Blaikie's patch to de-constify Type, with a few tweaks.
llvm-svn: 135375
2011-07-18 04:54:35 +00:00
Chris Lattner
7fc89c5ff8 deconstify getType()'s.
llvm-svn: 135323
2011-07-15 23:15:45 +00:00
Jakob Stoklund Olesen
557793fb60 Distinguish early clobber output operands from clobbered registers.
Both become <earlyclobber> defs on the INLINEASM MachineInstr, but we
now use two different asm operand kinds.

The new Kind_Clobber is treated identically to the old
Kind_RegDefEarlyClobber for now, but x87 floating point stack inline
assembly does care about the difference.

This will pop a register off the stack:

  asm("fstp %st" : : "t"(x) : "st");

While this will pop the input and push an output:

  asm("fst %st" : "=&t"(r) : "t"(x));

We need to know if ST0 was a clobber or an output operand, and we can't
depend on <dead> flags for that.

llvm-svn: 133902
2011-06-27 04:08:33 +00:00
Jay Foad
f921ffd79e Extend ConstantUniqueMap with a new template parameter ValRefType,
representing a constant reference to ValType. Normally this is just
"const ValType &", but when ValType is a std::vector we want to use
ArrayRef as the reference type.

llvm-svn: 133611
2011-06-22 08:50:06 +00:00
Evan Cheng
aa16fd02ad Do not model all INLINEASM instructions as having unmodelled side effects.
Instead encode llvm IR level property "HasSideEffects" in an operand (shared
with IsAlignStack). Added MachineInstrs::hasUnmodeledSideEffects() to check
the operand when the instruction is an INLINEASM.

This allows memory instructions to be moved around INLINEASM instructions.

llvm-svn: 123044
2011-01-07 23:50:32 +00:00
John Thompson
771289ca4a Mult-alt constraint incremental development step 3.
llvm-svn: 117746
2010-10-29 23:37:38 +00:00
John Thompson
6115a7f1d4 Inline asm multiple alternative constraints development phase 2 - improved basic logic, added initial platform support.
llvm-svn: 117667
2010-10-29 17:29:13 +00:00
John Thompson
ae3a86d6de Added skeleton for inline asm multiple alternative constraint support.
llvm-svn: 113766
2010-09-13 18:15:37 +00:00
Dale Johannesen
df6db93a4d Propagate the AlignStack bit in InlineAsm's to the
PrologEpilog code, and use it to determine whether
the asm forces stack alignment or not.  gcc consistently
does not do this for GCC-style asms; Apple gcc inconsistently
sometimes does it for asm blocks.  There is no
convenient place to put a bit in either the SDNode or
the MachineInstr form, so I've added an extra operand
to each; unlovely, but it does allow for expansion for
more bits, should we need it.  PR 5125.  Some
existing testcases are affected.
The operand lists of the SDNode and MachineInstr forms
are indexed with awesome mnemonics, like "2"; I may
fix this someday, but not now.  I'm not making it any
worse.  If anyone is inspired I think you can find all
the right places from this patch.

llvm-svn: 107506
2010-07-02 20:16:09 +00:00
Chris Lattner
dde7376e9d Three changes:
1. Introduce some enums and accessors in the InlineAsm class
   that eliminate a ton of magic numbers when handling inline
   asm SDNode.
2. Add a new MDNodeSDNode selection dag node type that holds
   a MDNode (shocking!)
3. Add a new argument to ISD::INLINEASM nodes that hold !srcloc
   metadata, propagating it to the instruction emitter, which
   drops it.

No functionality change.

llvm-svn: 100605
2010-04-07 05:20:54 +00:00
Jeffrey Yasskin
50a0593887 Memoize InlineAsms into the LLVMContext and delete them on shutdown.
Fixes PR803.

llvm-svn: 99143
2010-03-21 20:37:19 +00:00
Dan Gohman
92b6122204 Fix "the the" and similar typos.
llvm-svn: 95781
2010-02-10 16:03:48 +00:00
Daniel Dunbar
4daaf9d3f4 Pass StringRef by value.
llvm-svn: 86251
2009-11-06 10:58:06 +00:00
Dale Johannesen
2bb120a97f Rename msasm to alignstack per review.
llvm-svn: 84795
2009-10-21 23:28:00 +00:00
Dale Johannesen
7db511a23e Add an "msasm" flag to inline asm as suggested in PR 5125.
A little ugliness is accepted to keep the binary file format
compatible.  No functional change yet.

llvm-svn: 84020
2009-10-13 20:46:56 +00:00
Daniel Dunbar
9f50ab3c49 Finish migrating VMCore to StringRef/Twine based APIs.
llvm-svn: 77051
2009-07-25 06:02:13 +00:00
Evan Cheng
2ec94dd447 Model inline asm constraint which ties an input to an output register as machine operand TIED_TO constraint. This eliminated the need to pre-allocate registers for these. This also allows register allocator can eliminate the unneeded copies.
llvm-svn: 67512
2009-03-23 08:01:15 +00:00
Evan Cheng
0c629db2aa For inline asm output operand that matches an input. Encode the input operand index in the high bits.
llvm-svn: 67387
2009-03-20 18:03:34 +00:00
Chris Lattner
d748d12000 Keep track of *which* input constraint matches an output
constraint.  Reject asms where an output has multiple
input constraints tied to it.

llvm-svn: 57687
2008-10-17 16:47:46 +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
Chris Lattner
e0b1ee937a Don't attribute in file headers anymore. See llvmdev for the
discussion of this change.  Boy are my fingers tired. ;-)

llvm-svn: 45411
2007-12-29 19:59:42 +00:00
Chris Lattner
cb4a54fe17 remove obviously dead uses of IncludeFile.
llvm-svn: 45165
2007-12-18 19:15:48 +00:00
Chris Lattner
fabeb5e6c1 remove a dead annotation
llvm-svn: 45163
2007-12-18 19:04:24 +00:00
Gordon Henriksen
8430f1ff9a Reverting dtor devirtualization patch.
_sabre_: it has a major problem: by the time ~Value is run, all of the "parts" of the derived classes have been destroyed
_sabre_: the vtable lives to fight another day

llvm-svn: 44760
2007-12-10 02:14:30 +00:00
Gordon Henriksen
a18a78e6e5 Devirtualizing Value destructor (PR889). Patch by Pawel Kunio!
llvm-svn: 44747
2007-12-09 22:46:10 +00:00
Chris Lattner
0b40f6db6c represent indirect operands explicitly in inline asm strings.
llvm-svn: 36522
2007-04-28 01:02:58 +00:00
Dan Gohman
2d4b1767ab Rename Value::getValueType to getValueID, to avoid confusion with
other things named getValueType.

llvm-svn: 35964
2007-04-13 18:12:09 +00:00
Bill Wendling
7f6a73eb5c Added an automatic cast to "std::ostream*" etc. from OStream. We then can
rework the hacks that had us passing OStream in. We pass in std::ostream*
instead, check for null, and then dispatch to the correct print() method.

llvm-svn: 32636
2006-12-17 05:15:13 +00:00
Reid Spencer
10b9edbb69 For PR780:
1. Move IncludeFile.h to System library
2. Move IncludeFile.cpp to System library
3. #1 and #2 required to prevent cyclic library dependencies for libSystem
4. Convert all existing uses of Support/IncludeFile.h to System/IncludeFile.h
5. Add IncludeFile support to various lib/System classes.
6. Add new lib/System classes to LinkAllVMCore.h
All this in an attempt to pull in lib/System to what's required for VMCore

llvm-svn: 29287
2006-07-26 16:18:00 +00:00
Reid Spencer
854aa3ca41 For PR780:
1. Add #includes to LinkAllVMCore.h to get Mangler.o and InlineAsm.o
2. Make Mangler.h and InlineAsm.h use the macros to ensure linkage
3. Make each of the tools with --load options include LinkAllVMCore.h
This should be the last set of changes for this bug and 800.

llvm-svn: 28719
2006-06-07 23:03:13 +00:00
Chris Lattner
71f6e90ae3 Add a virtual dtor to the InlineAsm class so that the principle method of
the class can be defined in InlineAsm.cpp

llvm-svn: 28718
2006-06-07 22:47:44 +00:00
Chris Lattner
d150672d87 add a new flag
llvm-svn: 26340
2006-02-23 23:36:23 +00:00
Chris Lattner
0c9ddf7346 fix an error compiling with -pedantic
llvm-svn: 26028
2006-02-07 01:12:49 +00:00
Chris Lattner
d3e4f27b9f add an instance var and argument.
llvm-svn: 25891
2006-02-02 00:23:12 +00:00
Chris Lattner
fa737604c5 Beef up the interface to inline asm constraint parsing, making it more
general, useful, and easier to use.

llvm-svn: 25864
2006-02-01 01:27:37 +00:00
Chris Lattner
b94207514a add methods for constraint parsing
llvm-svn: 25636
2006-01-26 02:21:42 +00:00
Chris Lattner
81aef013ac add another method
llvm-svn: 25616
2006-01-25 22:10:35 +00:00
Chris Lattner
aff32aa901 add some useful accessors :)
llvm-svn: 25612
2006-01-25 19:58:26 +00:00
Chris Lattner
d36993d81d Change inline asms to be uniqued like constants, not embedded in a Module.
llvm-svn: 25610
2006-01-25 18:57:27 +00:00
Jeff Cohen
d08e0cadd6 Be consistent in using class/struct to keep Visual Studio happy.
llvm-svn: 25575
2006-01-24 04:41:48 +00:00
Chris Lattner
50ba79e71b Initial checkin of the InlineAsm class
llvm-svn: 25570
2006-01-24 04:13:11 +00:00