replica
/
hanchenye-llvm-project
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

[AVR] Added AVRCallingConv.td 

llvm-svn: 256130
This commit is contained in:
Dylan McKay 2015-12-20 23:17:44 +00:00
parent d1c84b078a
commit f061e9b7b2
3 changed files with 67 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
llvm/lib/Target/AVR/AVR.td
View File

@ -522,7 +522,7 @@ include "AVRRegisterInfo.td"
// Calling Conventions
//===---------------------------------------------------------------------===//
//include "AVRCallingConv.td"
include "AVRCallingConv.td"
//===---------------------------------------------------------------------===//
// Assembly Printers

65
llvm/lib/Target/AVR/AVRCallingConv.td Normal file
View File

@ -0,0 +1,65 @@
//===-- AVRCallingConv.td - Calling Conventions for AVR ----*- tablegen -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// This describes the calling conventions for AVR architecture.
//===----------------------------------------------------------------------===//
//===----------------------------------------------------------------------===//
// AVR Return Value Calling Convention
//===----------------------------------------------------------------------===//
def RetCC_AVR : CallingConv
<[
// i8 is returned in R24.
CCIfType<[i8], CCAssignToReg<[R24]>>,
// i16 are returned in R25:R24, R23:R22, R21:R20 and R19:R18.
CCIfType<[i16], CCAssignToReg<[R25R24, R23R22, R21R20, R19R18]>>
]>;
// Special return value calling convention for runtime functions.
def RetCC_AVR_RT : CallingConv
<[
CCIfType<[i8], CCAssignToReg<[R24,R25]>>,
CCIfType<[i16], CCAssignToReg<[R23R22, R25R24]>>
]>;
//===----------------------------------------------------------------------===//
// AVR Argument Calling Conventions
//===----------------------------------------------------------------------===//
// The calling conventions are implemented in custom C++ code
// Calling convention for variadic functions.
def ArgCC_AVR_Vararg : CallingConv
<[
// i16 are always passed through the stack with an alignment of 1.
CCAssignToStack<2, 1>
]>;
// Special argument calling convention for
// multiplication runtime functions.
def ArgCC_AVR_RT_MUL : CallingConv
<[
CCIfType<[i16], CCAssignToReg<[R27R26,R19R18]>>
]>;
// Special argument calling convention for
// division runtime functions.
def ArgCC_AVR_RT_DIV : CallingConv
<[
CCIfType<[i8], CCAssignToReg<[R24,R22]>>,
CCIfType<[i16], CCAssignToReg<[R25R24, R23R22]>>
]>;
//===----------------------------------------------------------------------===//
// Callee-saved register lists.
//===----------------------------------------------------------------------===//
def CSR_Normal : CalleeSavedRegs<(add R29, R28, (sequence "R%u", 17, 2))>;
def CSR_Interrupts : CalleeSavedRegs<(add (sequence "R%u", 31, 0))>;

1
llvm/lib/Target/AVR/CMakeLists.txt
View File

@ -1,6 +1,7 @@
set(LLVM_TARGET_DEFINITIONS AVR.td)
tablegen(LLVM AVRGenRegisterInfo.inc -gen-register-info)
tablegen(LLVM AVRGenCallingConv.inc -gen-callingconv)
add_public_tablegen_target(AVRCommonTableGen)
add_llvm_target(AVRCodeGen