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ec52aaa12f
llvm/lib/Target/XCore
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Evan Cheng ec52aaa12f Some ARM implementaions, e.g. A-series, does return stack prediction. That is, 
the processor keeps a return addresses stack (RAS) which stores the address
and the instruction execution state of the instruction after a function-call
type branch instruction.

Calling a "noreturn" function with normal call instructions (e.g. bl) can
corrupt RAS and causes 100% return misprediction so LLVM should use a
unconditional branch instead. i.e.
mov lr, pc
b _foo
The "mov lr, pc" is issued in order to get proper backtrace.

rdar://8979299


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151623 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-28 06:42:03 +00:00
..
MCTargetDesc Emacs-tag and some comment fix for all ARM, CellSPU, Hexagon, MBlaze, MSP430, PPC, PTX, Sparc, X86, XCore. 2012-02-18 12:03:15 +00:00
TargetInfo LLVMBuild: Remove trailing newline, which irked me. 2011-12-12 19:48:00 +00:00
CMakeLists.txt Fix up the CMake build for the new files added in r146960, they're 2011-12-20 08:42:11 +00:00
LLVMBuild.txt LLVMBuild: Introduce a common section which currently has a list of the 2011-12-12 22:45:54 +00:00
Makefile Next round of MC refactoring. This patch factor MC table instantiations, MC 2011-07-14 20:59:42 +00:00
README.txt The backend now makes a reasonable job of targeting lmul / macc 2010-03-10 18:14:47 +00:00
XCore.h Pass optLevel to XCoreDAGToDAGISel. 2011-12-15 15:18:35 +00:00
XCore.td Emacs-tag and some comment fix for all ARM, CellSPU, Hexagon, MBlaze, MSP430, PPC, PTX, Sparc, X86, XCore. 2012-02-18 12:03:15 +00:00
XCoreAsmPrinter.cpp Implement the emitFrameIndexDebugValue and getDebugValueLocation hooks. 2011-10-11 12:55:35 +00:00
XCoreCallingConv.td Add support for trampolines on the XCore. 2011-02-02 14:57:41 +00:00
XCoreFrameLowering.cpp Remove dead code. 2012-02-24 11:49:08 +00:00
XCoreFrameLowering.h Emacs-tag and some comment fix for all ARM, CellSPU, Hexagon, MBlaze, MSP430, PPC, PTX, Sparc, X86, XCore. 2012-02-18 12:03:15 +00:00
XCoreInstrFormats.td Emacs-tag and some comment fix for all ARM, CellSPU, Hexagon, MBlaze, MSP430, PPC, PTX, Sparc, X86, XCore. 2012-02-18 12:03:15 +00:00
XCoreInstrInfo.cpp Emacs-tag and some comment fix for all ARM, CellSPU, Hexagon, MBlaze, MSP430, PPC, PTX, Sparc, X86, XCore. 2012-02-18 12:03:15 +00:00
XCoreInstrInfo.h Emacs-tag and some comment fix for all ARM, CellSPU, Hexagon, MBlaze, MSP430, PPC, PTX, Sparc, X86, XCore. 2012-02-18 12:03:15 +00:00
XCoreInstrInfo.td Emacs-tag and some comment fix for all ARM, CellSPU, Hexagon, MBlaze, MSP430, PPC, PTX, Sparc, X86, XCore. 2012-02-18 12:03:15 +00:00
XCoreISelDAGToDAG.cpp Pass optLevel to XCoreDAGToDAGISel. 2011-12-15 15:18:35 +00:00
XCoreISelLowering.cpp Some ARM implementaions, e.g. A-series, does return stack prediction. That is, 2012-02-28 06:42:03 +00:00
XCoreISelLowering.h Some ARM implementaions, e.g. A-series, does return stack prediction. That is, 2012-02-28 06:42:03 +00:00
XCoreMachineFunctionInfo.cpp Emacs-tag and some comment fix for all ARM, CellSPU, Hexagon, MBlaze, MSP430, PPC, PTX, Sparc, X86, XCore. 2012-02-18 12:03:15 +00:00
XCoreMachineFunctionInfo.h Emacs-tag and some comment fix for all ARM, CellSPU, Hexagon, MBlaze, MSP430, PPC, PTX, Sparc, X86, XCore. 2012-02-18 12:03:15 +00:00
XCoreRegisterInfo.cpp Emacs-tag and some comment fix for all ARM, CellSPU, Hexagon, MBlaze, MSP430, PPC, PTX, Sparc, X86, XCore. 2012-02-18 12:03:15 +00:00
XCoreRegisterInfo.h Emacs-tag and some comment fix for all ARM, CellSPU, Hexagon, MBlaze, MSP430, PPC, PTX, Sparc, X86, XCore. 2012-02-18 12:03:15 +00:00
XCoreRegisterInfo.td Emacs-tag and some comment fix for all ARM, CellSPU, Hexagon, MBlaze, MSP430, PPC, PTX, Sparc, X86, XCore. 2012-02-18 12:03:15 +00:00
XCoreSelectionDAGInfo.cpp Implement a bunch more TargetSelectionDAGInfo infrastructure. 2010-05-11 17:31:57 +00:00
XCoreSelectionDAGInfo.h Implement a bunch more TargetSelectionDAGInfo infrastructure. 2010-05-11 17:31:57 +00:00
XCoreSubtarget.cpp Emacs-tag and some comment fix for all ARM, CellSPU, Hexagon, MBlaze, MSP430, PPC, PTX, Sparc, X86, XCore. 2012-02-18 12:03:15 +00:00
XCoreSubtarget.h Emacs-tag and some comment fix for all ARM, CellSPU, Hexagon, MBlaze, MSP430, PPC, PTX, Sparc, X86, XCore. 2012-02-18 12:03:15 +00:00
XCoreTargetMachine.cpp TargetPassConfig: confine the MC configuration to TargetMachine. 2012-02-04 02:56:59 +00:00
XCoreTargetMachine.h TargetPassConfig: confine the MC configuration to TargetMachine. 2012-02-04 02:56:59 +00:00
XCoreTargetObjectFile.cpp Remove more duplicated code. 2011-01-23 04:43:11 +00:00
XCoreTargetObjectFile.h Emacs-tag and some comment fix for all ARM, CellSPU, Hexagon, MBlaze, MSP430, PPC, PTX, Sparc, X86, XCore. 2012-02-18 12:03:15 +00:00

README.txt 

To-do
-----

* Instruction encodings
* Tailcalls
* Investigate loop alignment
* Add builtins