llvm-6502/include/llvm
Lang Hames b96e833817 [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>



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213892 91177308-0d34-0410-b5e6-96231b3b80d8
2014-07-24 20:40:55 +00:00
..
ADT AArch64: remove arm64 triple enumerator. 2014-07-23 12:32:47 +00:00
Analysis Add scoped-noalias metadata 2014-07-24 14:25:39 +00:00
AsmParser Move the LLVM IR asm writer header files into the IR directory, as they 2014-01-07 12:34:26 +00:00
Bitcode Add a dereferenceable attribute 2014-07-18 15:51:28 +00:00
CodeGen [X86] Optimize stackmap shadows on X86. 2014-07-24 20:40:55 +00:00
Config Drop the udis86 wrapper from llvm::sys 2014-07-17 20:05:29 +00:00
DebugInfo [DWARF parser] Teach DIContext to fetch short (non-linkage) function names for a given address. 2014-05-17 00:07:48 +00:00
ExecutionEngine Remove dead code. 2014-07-24 16:02:28 +00:00
IR Add scoped-noalias metadata 2014-07-24 14:25:39 +00:00
IRReader Make a helper function static. No functionality change. 2014-07-05 00:39:08 +00:00
LineEditor [C++11] Replace OwningPtr with std::unique_ptr in places where it doesn't break the API. 2014-04-21 09:34:48 +00:00
Linker IR: Add COMDATs to the IR 2014-06-27 18:19:56 +00:00
LTO Implement LTOModule on top of IRObjectFile. 2014-07-04 18:40:36 +00:00
MC [MC] Pass MCSymbolData to needsRelocateWithSymbol 2014-07-20 23:15:06 +00:00
Object Correct the ownership passing semantics of object::createBinary and make them explicit in the type system. 2014-07-21 16:26:24 +00:00
Option Option: Propagate flags from groups to options in each group 2014-07-12 00:18:58 +00:00
ProfileData ProfileData: Fix copy-paste type in RawInstrProfReader 2014-06-18 18:20:44 +00:00
Support test commit: remove trailing space 2014-07-23 17:18:05 +00:00
TableGen Revert "Introduce a string_ostream string builder facilty" 2014-06-26 22:52:05 +00:00
Target [Target] Teach the query interfaces for lowering of extloads and 2014-07-24 12:20:53 +00:00
Transforms MergedLoadStoreMotion pass 2014-07-18 19:13:09 +00:00
CMakeLists.txt [modules] Add module maps for LLVM. These are not quite ready for prime-time 2014-05-21 02:46:14 +00:00
InitializePasses.h Add scoped-noalias metadata 2014-07-24 14:25:39 +00:00
LinkAllIR.h [cleanup] Move the Dominators.h and Verifier.h headers into the IR 2014-01-13 09:26:24 +00:00
LinkAllPasses.h Add scoped-noalias metadata 2014-07-24 14:25:39 +00:00
module.modulemap [modules] Add module maps for LLVM. These are not quite ready for prime-time 2014-05-21 02:46:14 +00:00
module.modulemap.build [modules] Add module maps for LLVM. These are not quite ready for prime-time 2014-05-21 02:46:14 +00:00
Pass.h Revert "[PM] Add pass run listeners to the pass manager." 2014-05-15 17:49:20 +00:00
PassAnalysisSupport.h [C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr. 2014-04-14 00:51:57 +00:00
PassInfo.h Remove pimpl class from PassRegistry. 2014-06-12 16:06:51 +00:00
PassManager.h Move the old pass manager infrastructure into a legacy namespace and 2013-11-09 12:26:54 +00:00
PassRegistry.h Remove pimpl class from PassRegistry. 2014-06-12 16:06:51 +00:00
PassSupport.h Move GlobalMerge from Transform to CodeGen. 2014-06-13 22:57:59 +00:00