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323 Commits

Author SHA1 Message Date
Chris Lattner
77e7694026 fix GetOrCreateTemporarySymbol to require a name, clients 
should use CreateTempSymbol() if they don't care about the
name.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98712 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-17 05:41:18 +00:00
Daniel Dunbar
4e815f8a8c 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98592 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-15 23:51:06 +00:00
Daniel Dunbar
d6e59084d0 MC/Mach-O/x86_64: Temporary labels in cstring sections require symbols (and external relocations, but we don't have x86_64 relocations yet). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98583 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-15 21:56:50 +00:00
Daniel Dunbar
99d22adcad MC/Mach-O: Add MCSectionMachO::getType() 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98582 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-15 21:56:38 +00:00
Chris Lattner
c28cc093e3 fix a memory leak yjasskin pointed out: MCSymbol is bump pointer 
allocated and thus not freed.  This is cool except that it contains
and std::string so the string data didn't get freed.  In any case
there is no reason to redundantly store the string data in the 
MCSymbol anyway, just make the MCSymbol ref the string data in the
MCContext StringMap.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98536 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-15 06:15:35 +00:00
Chris Lattner
1d72a76616 add a new CreateTempSymbol method, the use case for 
CreateTempSymbol vs GetOrCreateTemporarySymbol are
completely different.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98486 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 08:23:30 +00:00
Daniel Dunbar
d3da36286f MC: Fix a crash on invalid, attempting to evaluate undefined symbols. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98464 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-14 03:10:40 +00:00
Daniel Dunbar
5691e74f97 MC/X86_64: Symbol support. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98456 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-13 22:49:35 +00:00
Daniel Dunbar
ee0d89245e MC/Mach-O: Initial x86_64 support. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98454 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-13 22:10:17 +00:00
Chris Lattner
3a151be8d5 add a hack to allow parsing negative minint. rdar://7751341 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98442 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-13 19:25:13 +00:00
Daniel Dunbar
da3e9f760c MC/Mach-O: PCrel relocations weren't using the right base address, they are 
relative to the fragment address, not its offset. This was masked by the text
section normally being at address 0.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98420 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-13 02:38:00 +00:00
Daniel Dunbar
5e6a7a248b llvm-mc: Support -n, useful for comparing -integrated-as output since the 
compiler may not lead with the text section.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98418 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-13 02:20:57 +00:00
Daniel Dunbar
f08fde41f3 MC/Mach-O: Implement initial support for relaxation. 
- The implementation is currently very brain dead and inefficient, but I have a
   clear plan on how to fix it.

 - The good news is, it works and correctly assembles 403.gcc (when built with
   Clang, at '-Os', '-Os -g', and '-O3'). Even better, at '-Os' and '-Os -g',
   the resulting binary is exactly equivalent to that when built with the system
   assembler. So it probably works! :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98396 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-12 22:07:14 +00:00
Chris Lattner
8a29fa6e02 move fastcall/stdcall mangling up into Mangler. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98384 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-12 21:03:47 +00:00
Daniel Dunbar
df3c8f2969 MC: Factor out MCAssembler::EvaluateFixup, and simplify. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98381 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-12 21:00:49 +00:00
Daniel Dunbar
a0e36d55c4 MC: Constify MCAsmLayout argument to MCExpr::EvaluteAs... 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98380 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-12 21:00:45 +00:00
Daniel Dunbar
8315a357e4 MC: Add MCAssembler::addFixup, which enforces that fixups are added in order. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98379 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-12 21:00:38 +00:00
Chris Lattner
fdab14b105 remove MAI argument from createAsmStreamer since it 
can get it from the context now.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98361 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-12 18:28:53 +00:00
Chris Lattner
1a5c28f471 enhance MCContext::GetOrCreateTemporarySymbol() to create a new symbol 
with an arbitrary unique name.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98294 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 22:56:10 +00:00
Chris Lattner
c18409aed8 change MCContext to always have an MCAsmInfo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98293 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 22:53:35 +00:00
Chris Lattner
19a994766f empty symbols aren't possible, the mcsymbol ctor aborts on them. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98288 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 21:38:58 +00:00
Daniel Dunbar
8f0448cabc MC/Mach-O: Add MCSymbolData::getAddress() utility. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98266 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 18:22:51 +00:00
Daniel Dunbar
979ba5b3c7 MC/Mach-O: Implement "absolutizing" semantics of .set, by evaluating the assembly time value of variables. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98241 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 05:53:37 +00:00
Daniel Dunbar
18ff2cced7 MC/Mach-O: Start passing in the basic MCAsmLayout object. 
- Also, drop the current location part of AsmLayout, I think I prefer to implement this via explicit symbols.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98240 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 05:53:33 +00:00
Daniel Dunbar
f82f4490b1 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. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98227 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 02:28:59 +00:00
Daniel Dunbar
1f3e445184 MC: Provide MCAssembler with a TargetAsmBackend. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98222 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-11 01:34:27 +00:00
Daniel Dunbar
2101d9c4af MC/Mach-O: Use the MCAssembler symbol map instead of reconstructing. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98187 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 20:58:31 +00:00
Daniel Dunbar
46836a783a MC: Move the backend section and symbol data maps to MCAssembler. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98186 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 20:58:29 +00:00
Daniel Dunbar
0965200ac2 Remove unneeded includes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98167 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 17:56:05 +00:00
Chris Lattner
09d53fecfc move three lowering hooks from MAI to TLOF and make one of them 
semantic instead of syntactic.  This completes MCization of
darwin/x86[-64]!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98145 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 07:20:42 +00:00
Chris Lattner
98cdab53c3 set the temporary bit on MCSymbols correctly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98124 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 02:25:11 +00:00
Daniel Dunbar
07a9641ebf MC/Mach-O: Resolve a FIXME; these relocation types are no longer semanticaly different. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98120 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 02:10:29 +00:00
Chris Lattner
00685bb5cf eliminate MCContext::CreateSymbol and CreateTemporarySymbol. 
Add a new GetOrCreateTemporarySymbol method and a version that
takes a twine.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98118 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 01:29:27 +00:00
Daniel Dunbar
a015c1c876 MC/Mach-O: Use the SECTDIFF relocation type for (A - B + constant) where A is external. 
- I'm not sure why, but this is what 'as' does.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98115 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-10 00:58:25 +00:00
Chris Lattner
2e5dd9b741 make the NullStreamer set the section on a label when emitted so that isDefined() works. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98100 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 23:12:18 +00:00
Daniel Dunbar
f3a066f7c3 MC/Mach-O: For PCrel relocations, we need to compensate for the PCrel adjustment when determining if we need a scattered relocation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98082 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 21:27:58 +00:00
Daniel Dunbar
aef9d7af69 MC/Mach-O: Also set the PCrel bit in the second half of paired relocation entries. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98081 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 21:27:47 +00:00
Daniel Dunbar
e180fa962c MC/Mach-O: Don't generate relocations for PCrel fixups to local labels. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98080 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 21:27:30 +00:00
Daniel Dunbar
45aefff64c MC/Mach-O: Tweak .dump() formatting. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98028 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 01:12:23 +00:00
Daniel Dunbar
f8b8ad77a8 MC/Mach-O: Don't adjust section sizes when aligning zero fill sections, just pad the address. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98027 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 01:12:20 +00:00
Chris Lattner
6cde3e6e99 add a EmitSymbolValue convenience method to MCStreamer. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98017 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 00:39:24 +00:00
Daniel Dunbar
b2b4acd757 MC/Macho-O: Align the zerofill section itself to the maximum alignment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97991 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 22:03:42 +00:00
Daniel Dunbar
37fad5ce4d MC/Mach-O: Fix address compution for zero fill sections. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97984 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 21:10:42 +00:00
Daniel Dunbar
0ce6bd55c3 MC/Mach-O: Error out instead of crashing on invalid scattered relocation expressions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97983 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 21:10:39 +00:00
Chris Lattner
f60e9bbbad pass in more section kinds, enough to get the .align 0x90 
stuff to emit optimal nops in the right places.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97233 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-26 18:32:26 +00:00
Kevin Enderby
d74acb0c78 This is a patch to the assembler frontend to detect when aligning a text 
section with TextAlignFillValue and calls EmitCodeAlignment() instead of
calling EmitValueToAlignment().  This allows x86 assembly code to be aligned
with optimal nops.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97158 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-25 18:46:04 +00:00
Kevin Enderby
76687083a5 This is the second patch to allow x86 code to be aligned with optimal nops. 
With the compiler changed to use EmitCodeAlignment() it does change the
functionality.  But X86 assembly code assembled with llvm-mc does not change
its output.  For that we will eventually change the assembler frontend to
detect a '.align x, 0x90' when used in a section that 'hasInstructions' and use
EmitCodeAlignment, but will wait until we have better target hooks.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96988 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-23 21:41:24 +00:00
Chris Lattner
ec167fd987 genericize MCAsmStreamer::EmitCodeAlignment to support other targets 
so that it doesn't break them when the code generator starts using it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96966 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-23 18:44:31 +00:00
Kevin Enderby
6e72048add This is the first patch to put the needed bits in place to eventually allow code 
to be aligned with optimal nops.  This patch does not change any functionality
and when the compiler is changed to use EmitCodeAlignment() it should also not
change the resulting output.  Once the compiler change is made and everything
looks good the next patch with the table of optimal X86 nops will be added to
WriteNopData() changing the output.  There are many FIXMEs in this patch which
will be removed when we have better target hooks (coming soon I hear).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96963 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-23 18:26:34 +00:00
Daniel Dunbar
40ebe2473a MC/Mach-O: Remove non-sensical comment, and add a missing AddValueSymbols call. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96809 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-22 22:08:57 +00:00