6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-08-05 13:26:55 +00:00
Code Issues Projects Releases Wiki Activity

Switch Alpha over to the new call lowering style. New code mostly

Browse Source 
copied from the SystemZ target.  I don't think this causes any 
significant changes to the output (I compared the assembly, and the 
results appeared to be essentially unchanged), although I don't actually 
have an Alpha to test on.

I would appreciate if anyone with the appropriate hardware could test 
this. I'm not sure if that includes anyone subscribed to llvm-commits, 
though.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76353 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eli Friedman
2009-07-19 01:11:32 +00:00
parent 10b547c638
commit 796492dc4b
5 changed files with 220 additions and 159 deletions
Download Patch File Download Diff File Expand all files Collapse all files

37
lib/Target/Alpha/AlphaCallingConv.td Normal file
View File

@@ -0,0 +1,37 @@
//===- AlphaCallingConv.td - Calling Conventions for Alpha -*- 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 Alpha architecture.
//===----------------------------------------------------------------------===//
//===----------------------------------------------------------------------===//
// Alpha Return Value Calling Convention
//===----------------------------------------------------------------------===//
def RetCC_Alpha : CallingConv<[
// i64 is returned in register R0
CCIfType<[i64], CCAssignToReg<[R0]>>,
// f32 / f64 are returned in F0/F1
CCIfType<[f32, f64], CCAssignToReg<[F0, F1]>>
]>;
//===----------------------------------------------------------------------===//
// Alpha Argument Calling Conventions
//===----------------------------------------------------------------------===//
def CC_Alpha : CallingConv<[
// The first 6 arguments are passed in registers, whether integer or
// floating-point
CCIfType<[i64], CCAssignToRegWithShadow<[R16, R17, R18, R19, R20, R21],
[F16, F17, F18, F19, F20, F21]>>,
CCIfType<[f32, f64], CCAssignToRegWithShadow<[F16, F17, F18, F19, F20, F21],
[R16, R17, R18, R19, R20, R21]>>,
// Stack slots are 8 bytes in size and 8-byte aligned.
CCIfType<[i64, f32, f64], CCAssignToStack<8, 8>>
]>;