mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-17 03:30:28 +00:00
7c2ef822f7
Summary:
RET, and RET_MM have been replaced by a pseudo named PseudoReturn.
In addition a version with a 64-bit GPR named PseudoReturn64 has been
added.
Instruction selection for a return matches RetRA, which is expanded post
register allocation to PseudoReturn/PseudoReturn64. During MipsAsmPrinter,
this PseudoReturn/PseudoReturn64 are emitted as:
- (JALR64 $zero, $rs) on MIPS64r6
- (JALR $zero, $rs) on MIPS32r6
- (JR_MM $rs) on microMIPS
- (JR $rs) otherwise
On MIPS32r6/MIPS64r6, 'jr $rs' is an alias for 'jalr $zero, $rs'. To aid
development and review (specifically, to ensure all cases of jr are
updated), these aliases are temporarily named 'r6.jr' instead of 'jr'.
A follow up patch will change them back to the correct mnemonic.
Added (JALR $zero, $rs) to MipsNaClELFStreamer's definition of an indirect
jump, and removed it from its definition of a call.
Note: I haven't accounted for MIPS64 in MipsNaClELFStreamer since it's
doesn't appear to account for any MIPS64-specifics.
The return instruction created as part of eh_return expansion is now expanded
using expandRetRA() so we use the right return instruction on MIPS32r6/MIPS64r6
('jalr $zero, $rs').
Also, fixed a misuse of isABI_N64() to detect 64-bit wide registers in
expandEhReturn().
Reviewers: jkolek, vmedic, mseaborn, zoran.jovanovic, dsanders
Reviewed By: dsanders
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D4268
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212604 91177308-0d34-0410-b5e6-96231b3b80d8
|
||
|---|---|---|
| .. | ||
| CMakeLists.txt | ||
| LLVMBuild.txt | ||
| Makefile | ||
| MipsABIFlagsSection.cpp | ||
| MipsABIFlagsSection.h | ||
| MipsAsmBackend.cpp | ||
| MipsAsmBackend.h | ||
| MipsBaseInfo.h | ||
| MipsELFObjectWriter.cpp | ||
| MipsELFStreamer.cpp | ||
| MipsELFStreamer.h | ||
| MipsFixupKinds.h | ||
| MipsMCAsmInfo.cpp | ||
| MipsMCAsmInfo.h | ||
| MipsMCCodeEmitter.cpp | ||
| MipsMCCodeEmitter.h | ||
| MipsMCExpr.cpp | ||
| MipsMCExpr.h | ||
| MipsMCNaCl.h | ||
| MipsMCTargetDesc.cpp | ||
| MipsMCTargetDesc.h | ||
| MipsNaClELFStreamer.cpp | ||
| MipsTargetStreamer.cpp | ||