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llvm-project/llvm/lib/CodeGen/AsmPrinter
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Lang Hames f49bc3f1b1 [X86] Optimize stackmap shadows on X86. 
This patch minimizes the number of nops that must be emitted on X86 to satisfy
stackmap shadow constraints.

To minimize the number of nops inserted, the X86AsmPrinter now records the
size of the most recent stackmap's shadow in the StackMapShadowTracker class,
and tracks the number of instruction bytes emitted since the that stackmap
instruction was encountered. Padding is emitted (if it is required at all)
immediately before the next stackmap/patchpoint instruction, or at the end of
the basic block.

This optimization should reduce code-size and improve performance for people
using the llvm stackmap intrinsic on X86.

<rdar://problem/14959522>

llvm-svn: 213892
 		2014-07-24 20:40:55 +00:00
..
ARMException.cpp CodeGen: refactor DwarfException 2014-06-11 01:19:03 +00:00
AddressPool.cpp DWARF Type Units: Avoid emitting type units under fission if the type requires an address. 2014-04-26 17:27:38 +00:00
AddressPool.h AddressPool::HasBeenUsed: Add comment explaining the use-case for this flag. 2014-04-28 22:52:50 +00:00
AsmPrinter.cpp [X86] Optimize stackmap shadows on X86. 2014-07-24 20:40:55 +00:00
AsmPrinterDwarf.cpp Clarify the doxygen comment for AsmPrinter::EmitDwarfRegOpPiece and add 2014-04-27 18:50:45 +00:00
AsmPrinterHandler.h Remove weak vtables. No functional change. 2013-12-14 12:23:14 +00:00
AsmPrinterInlineAsm.cpp Revert "Introduce a string_ostream string builder facilty" 2014-06-26 22:52:05 +00:00
ByteStreamer.h [C++11] Add 'override' keyword to virtual methods that override their base class. 2014-03-08 06:31:39 +00:00
CMakeLists.txt CodeGen: refactor DwarfException 2014-06-11 01:19:03 +00:00
DIE.cpp DIEEntry: Refer to the specified DIE via reference rather than pointer. 2014-04-25 19:33:43 +00:00
DIE.h DIE: Document some learnings about why the world isn't perfect. 2014-04-28 22:41:39 +00:00
DIEHash.cpp DIEEntry: Refer to the specified DIE via reference rather than pointer. 2014-04-25 19:33:43 +00:00
DIEHash.h [C++] Use 'nullptr'. 2014-04-24 06:44:33 +00:00
DbgValueHistoryCalculator.cpp Generate better location ranges for some register-described variables. 2014-06-09 21:53:47 +00:00
DbgValueHistoryCalculator.h Change representation of instruction ranges where variable is accessible. 2014-05-27 23:09:50 +00:00
DebugLocEntry.h [C++] Use 'nullptr'. 2014-04-28 04:05:08 +00:00
DebugLocList.h DebugInfo: Introduce DebugLocList to encapsulate a list of DebugLocEntries and an MC Label to refer to them 2014-04-02 01:43:18 +00:00
DwarfAccelTable.cpp DwarfAccelTable: Store the string symbol in the accelerator table to avoid duplicate lookup. 2014-04-25 22:21:35 +00:00
DwarfAccelTable.h Remove redundant explicit default initialization of non-trivially constructed member. 2014-04-27 14:47:23 +00:00
DwarfCFIException.cpp Print a=b as an assignment. 2014-06-24 22:45:16 +00:00
DwarfDebug.cpp Revert "Recommit r212203: Don't try to construct debug LexicalScopes hierarchy for functions that do not have top level debug information." 2014-07-21 20:45:59 +00:00
DwarfDebug.h Revert "Recommit r212203: Don't try to construct debug LexicalScopes hierarchy for functions that do not have top level debug information." 2014-07-21 20:45:59 +00:00
DwarfException.h CodeGen: refactor DwarfException 2014-06-11 01:19:03 +00:00
DwarfFile.cpp Encapsulate the DWARF string pool in a separate type. 2014-04-25 21:34:35 +00:00
DwarfFile.h Encapsulate the DWARF string pool in a separate type. 2014-04-25 21:34:35 +00:00
DwarfStringPool.cpp Make helper functions static. 2014-04-27 14:54:59 +00:00
DwarfStringPool.h Encapsulate the DWARF string pool in a separate type. 2014-04-25 21:34:35 +00:00
DwarfUnit.cpp DebugInfo: Following up to r209677, refactor local variable emission to delay the choice between emitting the definition attributes or using DW_AT_abstract_definition 2014-06-13 22:18:23 +00:00
DwarfUnit.h DebugInfo: Following up to r209677, refactor local variable emission to delay the choice between emitting the definition attributes or using DW_AT_abstract_definition 2014-06-13 22:18:23 +00:00
EHStreamer.cpp CodeGen: refactor DwarfException 2014-06-11 01:19:03 +00:00
EHStreamer.h CodeGen: refactor DwarfException 2014-06-11 01:19:03 +00:00
ErlangGCPrinter.cpp [C++11] Add 'override' keyword to virtual methods that override their base class. 2014-03-08 06:31:39 +00:00
LLVMBuild.txt Add proper dependencies to LLVMBuild.txt in llvm/lib. 2013-12-10 05:39:34 +00:00
Makefile
…
OcamlGCPrinter.cpp [C++11] Add 'override' keyword to virtual methods that override their base class. 2014-03-08 06:31:39 +00:00
Win64Exception.cpp MC: rename EmitWin64EH routines 2014-06-29 01:52:01 +00:00
WinCodeViewLineTables.cpp The count() function for STL datatypes returns unsigned, even where it's 2014-06-20 10:26:56 +00:00
WinCodeViewLineTables.h [C++] Use 'nullptr'. 2014-04-28 04:05:08 +00:00