a468ae02cb
Simplify EvaluateAsAbsolute now that EvaluateAsRelocatableImpl does all
...
the folding it can.
llvm-svn: 122359
2010-12-21 20:51:42 +00:00
ee54636f0a
Fixed version of 122160 (the previous one would fold undefined symbols).
...
llvm-svn: 122167
2010-12-19 04:18:56 +00:00
9a2d4e04c7
Revert 122160 while I debug it.
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llvm-svn: 122165
2010-12-19 03:22:05 +00:00
6fd80a5593
Move all folding to AttemptToFoldSymbolOffsetDifference.
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llvm-svn: 122160
2010-12-19 02:15:04 +00:00
b403e098a1
Merge isAbsolute into IsSymbolRefDifferenceFullyResolved.
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llvm-svn: 122148
2010-12-18 06:27:54 +00:00
8396dd0893
Remove the MCObjectFormat class.
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llvm-svn: 122147
2010-12-18 05:37:28 +00:00
293a7c1840
Add a FIXME and explain a hack.
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llvm-svn: 122144
2010-12-18 04:19:20 +00:00
1ea7f18caa
Fix the note.
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llvm-svn: 122139
2010-12-18 04:01:45 +00:00
5004f4a9b5
Revert 122011, 122012, 122013, 122023 adding back an important optimization.
...
I added a note, but suggestions on how to add a test are really welcome.
llvm-svn: 122138
2010-12-18 03:57:21 +00:00
137d422e50
MC/Expr: Implemnt more aggressive folding during symbol evaluation using
...
IsSymbolRefDifferenceFullyResolved(). For example, we will now fold away
something like:
--
_a:
...
L0:
...
L1:
...
.long (L1 - L0) / 2
--
llvm-svn: 122043
2010-12-17 05:50:33 +00:00
e491ea4630
MC/Expr: Simplify.
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llvm-svn: 122023
2010-12-17 02:05:45 +00:00
f89156da92
MC: Remove another dead MCAssembler argument, and update clients.
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llvm-svn: 122013
2010-12-17 01:07:35 +00:00
f15aeb8d01
MC: Remove dead MCAssembler argument -- Rafael, can you check the FIXME I added
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here?
llvm-svn: 122012
2010-12-17 01:07:31 +00:00
9af1335b5d
MC: Simplify (remove unnecessary MCAssembler argument, obsoleted by containment
...
in MCAsmLayout).
llvm-svn: 122011
2010-12-17 01:07:28 +00:00
33d571e2ae
Write => in a more normal form.
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llvm-svn: 122009
2010-12-17 01:07:22 +00:00
76793bac89
MC/Expr: Simplify (and add a FIXME).
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llvm-svn: 122008
2010-12-17 01:07:20 +00:00
395a09922b
MC/Expr: Add a doxyment.
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llvm-svn: 121988
2010-12-16 18:36:25 +00:00
93e3cf0ebd
Sorry for such a large commit. The summary is that only MachO cares about the
...
actuall addresses in a .o file, so it is better to let the MachO writer compute
it.
This is good for two reasons. First, areas that shouldn't care about
addresses now don't have access to it. Second, the layout of each section
is independent. I should use this in a subsequent commit to speed it up.
Most of the patch is just removing the section address computation. The two
interesting parts are the change on how we handle padding in the end
of sections and how MachO can get the address of a-b when a and b are in
different sections.
Since now the expression evaluation normally doesn't know the section address,
it will think that a-b needs relocation and let the MachO writer know. Once
it has computed the section addresses, it calls back the expression evaluation
with the section addresses to resolve these expressions.
The remaining problem is the handling of padding. Currently it will create
a special alignment fragment at the end. Since that fragment doesn't update
the alignment of the section, it needs the real address to be computed.
Since now the layout will not compute a-b with a and b in different sections,
the only effect that the special alignment fragment has is update the
address size of the section. This can also be done by the MachO writer.
llvm-svn: 121076
2010-12-07 00:27:36 +00:00
1055f72b97
Use references to simplify the code a bit.
...
llvm-svn: 121050
2010-12-06 22:30:54 +00:00
46e40188f7
Simplify a bit.
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llvm-svn: 120980
2010-12-06 03:36:43 +00:00
57ab708bdd
Try to resolve symbol differences early, and if successful create a plain
...
data fragment. This reduces the time to assemble the test in 8711 from 60s to
54s.
llvm-svn: 120767
2010-12-03 00:55:40 +00:00
bf792065a9
Add a fast path to EvaluateSymbolicAdd. This avoids computing symbol addresses
...
which then avoids running EnsureValid.
This cuts the assembly time of the testcase in PR8711 from 2:50 minutes to 1
minute.
llvm-svn: 120697
2010-12-02 07:53:12 +00:00
d82684c7fc
Fix typo.
...
llvm-svn: 119542
2010-11-17 19:30:11 +00:00
8c3039b67b
Change MCExpr::EvaluateAsRelocatableImpl of variables to return the original
...
variable if recursing fails to simplify it.
Factor AliasedSymbol to be a method of MCSymbol.
Update MCAssembler::EvaluateFixup to match the change in
EvaluateAsRelocatableImpl.
Remove the WeakRefExpr hack, as the object writer now sees the weakref with
no extra effort needed.
Nothing else is using MCTargetExpr, but keep it for now.
Now that the ELF writer sees relocations with aliases, handle
.weak foo2
foo2:
.weak bar2
.set bar2,foo2
.quad bar2
the same way gas does and produce a relocation with bar2.
llvm-svn: 119152
2010-11-15 16:33:49 +00:00
edb9d84dcc
add targetoperand flags for jump tables, constant pool and block address
...
nodes to indicate when ha16/lo16 modifiers should be used. This lets
us pass PowerPC/indirectbr.ll.
The one annoying thing about this patch is that the MCSymbolExpr isn't
expressive enough to represent ha16(label1-label2) which we need on
PowerPC. I have a terrible hack in the meantime, but this will have
to be revisited at some point.
Last major conversion item left is global variable references.
llvm-svn: 119105
2010-11-15 02:46:57 +00:00
94f0c14cb0
reimplement ppc asmprinter "toc" handling to use a VariantKind
...
on the operand, required for .o file writing and fixing
the PowerPC/mult-alt-generic-powerpc64.ll failure with the new
instprinter.
llvm-svn: 119087
2010-11-14 22:22:59 +00:00
f23b2d9d8d
Update ARMConstantPoolValue to not use a modifier string. Use an explicit
...
VariantKind marker to indicate the additional information necessary. Update
MC to handle the new Kinds. rdar://8647623
llvm-svn: 118671
2010-11-10 03:26:07 +00:00
2dbec3f762
Implement TLSLD.
...
llvm-svn: 117547
2010-10-28 15:02:40 +00:00
e8f08be11c
Implement DTPOFF.
...
llvm-svn: 117546
2010-10-28 14:48:59 +00:00
6f23eb380d
Implement TLSLDM.
...
llvm-svn: 117544
2010-10-28 14:37:09 +00:00
b3b49bbc39
Implement VK_GOTNTPOFF and switch RelocNeedsGOT to use VariantKind.
...
llvm-svn: 117543
2010-10-28 14:22:44 +00:00
8ba86f801d
Do not recurse into symbol refs that have a variant kind. This prevents us
...
from losing the variant when producing a relocation on an alias.
llvm-svn: 117037
2010-10-21 18:00:20 +00:00
4262a22225
Add a MCObjectFormat class so that code common to all targets that use a
...
single object format can be shared.
This also adds support for
mov zed+(bar-foo), %eax
on ELF and COFF targets.
llvm-svn: 116675
2010-10-16 18:23:53 +00:00
dce906c77f
Changes EvaluateAsAbsolute() to return the "current value" of the expression
...
if we are given a Layout object, even in cases when the value is not fixed.
This will be needed by the final patch for the dwarf .loc support to size a
new MCDwarf fragment needed to build and emit dwarf line number tables.
llvm-svn: 115155
2010-09-30 16:42:21 +00:00
85dcd3d0f4
Add support for ELF PLT references for ARM MC asm printing. Adding a
...
new VariantKind to the MCSymbolExpr seems like overkill, but I'm not sure
there's a more straightforward way to get the printing difference captured.
(i.e., x86 uses @PLT, ARM uses (PLT)).
llvm-svn: 114613
2010-09-22 23:27:36 +00:00
41b4a6b36a
Convert some tab stops into spaces.
...
llvm-svn: 108130
2010-07-12 08:16:59 +00:00
e7b64dcc1e
Start adding mach-o tls reloc support.
...
llvm-svn: 104651
2010-05-26 00:02:12 +00:00
b69c7b76f1
Add support for movi32 of global values to the new (MC) asm printer.
...
llvm-svn: 103576
2010-05-12 05:16:34 +00:00
7a989da0af
MC: Rename MCSymbol::{g,s}etValue -> MCSymbol::{g,s}etVariableValue.
...
llvm-svn: 103095
2010-05-05 17:41:00 +00:00
9897043928
Rip out the 'is temporary' nonsense from the MCContext interface to
...
create symbols. It is extremely error prone and a source of a lot
of the remaining integrated assembler bugs on x86-64.
This fixes rdar://7807601.
llvm-svn: 99902
2010-03-30 18:10:53 +00:00
5caf2ff561
MC: Fix refacto in MCExpr evaluation, I mistakenly replaced a fragment address with a symbol address.
...
- This fixes the integrated-as nightly test regressions.
llvm-svn: 99466
2010-03-25 01:03:17 +00:00
7c969558d9
MC: Direct all {fragment,section,symbol} address access through the MCAsmLayout object.
...
llvm-svn: 99380
2010-03-24 03:43:40 +00:00
5376c2a431
MC: Sprinkle in some more interesting statistics.
...
llvm-svn: 99350
2010-03-23 23:47:14 +00:00
5cfb58719d
llvm-mc: Fast path EvaluateAbsolute of constants.
...
llvm-svn: 99348
2010-03-23 23:47:07 +00:00
9c64ec0a7e
MCValue: Change to holding MCSymbolRefExprs instead of MCSymbols, we will need this for accessing to symbol modifiers.
...
llvm-svn: 98791
2010-03-18 00:59:10 +00:00
5599256415
MC: Allow modifiers in MCSymbolRefExpr, and eliminate X86MCTargetExpr.
...
- Although it would be nice to allow this decoupling, the assembler needs to be able to reason about MCSymbolRefExprs in too many places to make this viable. We can use a target specific encoding of the variant if this becomes an issue.
- This patch also extends llvm-mc to support parsing of the modifiers, as opposed to lumping them in with the symbol.
llvm-svn: 98592
2010-03-15 23:51:06 +00:00
aa8f95eb56
MC: Fix a crash on invalid, attempting to evaluate undefined symbols.
...
llvm-svn: 98464
2010-03-14 03:10:40 +00:00
968b36a0bd
MC: Constify MCAsmLayout argument to MCExpr::EvaluteAs...
...
llvm-svn: 98380
2010-03-12 21:00:45 +00:00
5c5228a8f6
MC/Mach-O: Implement "absolutizing" semantics of .set, by evaluating the assembly time value of variables.
...
llvm-svn: 98241
2010-03-11 05:53:37 +00:00
ac8a95498a
MC: Sketch initial MCAsmLayout class, which encapsulates the current layout of an assembly file. The MCAsmLayout is also available for use by MCExpr::EvaluateAs{Absolute,Relocatable}, to allow target specific hooks and "absolutizing" of symbols.
...
llvm-svn: 98227
2010-03-11 02:28:59 +00:00
ac2361a9b0
set the temporary bit on MCSymbols correctly.
...
llvm-svn: 98124
2010-03-10 02:25:11 +00:00
9a9d9ea7bc
Document that MCExpr::Mod is actually remainder.
...
Document that MCExpr::Div, Mod, and the comparison operators are all
signed operators.
Document that the comparison operators' results are target-dependent.
Document that the behavior of shr is target-dependent.
llvm-svn: 95619
2010-02-08 23:58:47 +00:00
54d88f1759
don't make hte dtor private or we can't construct the class.
...
llvm-svn: 95587
2010-02-08 22:07:36 +00:00
38d022efe9
add scaffolding for target-specific MCExprs.
...
llvm-svn: 95559
2010-02-08 19:41:07 +00:00
c8f7717808
remove the MAI argument to MCExpr::print and switch overthing to use << when printing them.
...
llvm-svn: 93699
2010-01-18 00:37:40 +00:00
8b5d55ed06
now that MCSymbol::print doesn't use it's MAI argument, we can
...
remove it and change all the code that prints MCSymbols to use
<< instead, which is much simpler and cleaner.
llvm-svn: 93695
2010-01-17 21:43:43 +00:00
a8cbfb8acc
Change errs() to dbgs().
...
llvm-svn: 92630
2010-01-05 01:28:07 +00:00
ad36e8aceb
Pass StringRef by value.
...
llvm-svn: 86251
2009-11-06 10:58:06 +00:00
c3bd60e393
MC: Remove unneeded context argument to MCExpr::Evaluate*.
...
llvm-svn: 84233
2009-10-16 01:57:52 +00:00
17b9027b5c
MC: Move assembler variable values from MCContext to MCSymbol.
...
llvm-svn: 84229
2009-10-16 01:33:57 +00:00
584a1b25ef
MC: Switch MCContext value table to storing MCExprs.
...
llvm-svn: 84228
2009-10-16 01:33:11 +00:00
6a833f6806
add a helper method for creating MCSymbol and MCSymbolRefExpr at
...
the same time.
llvm-svn: 81984
2009-09-16 01:26:31 +00:00
22833a3cd6
parenthesize symbol names that start with $, fixing X86/dollar-name.ll with
...
the new asmprinter.
llvm-svn: 81269
2009-09-08 23:20:50 +00:00
7975b8fc32
Print "X-42" instead of "X+-42".
...
llvm-svn: 81203
2009-09-08 06:37:35 +00:00
3cfc551f6e
make formatting of expressions more closely match the existing asmprinter.
...
llvm-svn: 81202
2009-09-08 06:34:07 +00:00
a0020be758
tidy whitespace.
...
llvm-svn: 81201
2009-09-08 06:27:48 +00:00
f4366a3998
Thread an MCAsmInfo pointer through the various MC printing APIs,
...
and fix a few things using << on MCSymbols to use ->print(). No
functionality change other than unbreaking my previous patch.
llvm-svn: 80890
2009-09-03 05:46:51 +00:00
b34a2b9da1
llvm-mc: Add MCExpr::{dump,print}.
...
llvm-svn: 80570
2009-08-31 08:07:33 +00:00
f363645da2
llvm-mc: Switch MCExpr construction to using static member functions, and taking the MCContext (which now owns all MCExprs).
...
llvm-svn: 80569
2009-08-31 08:07:22 +00:00
115e4d6d7b
llvm-mc: Move AsmExpr into MC lib (as MCExpr).
...
llvm-svn: 80567
2009-08-31 08:06:59 +00:00
Rafael Espindola