[mips] Fix handling of instructions which copy to/from accumulator registers.
Expand copy instructions between two accumulator registers before callee-saved
scan is done. Handle copies between integer GPR and hi/lo registers in
MipsSEInstrInfo::copyPhysReg. Delete pseudo-copy instructions that are not
needed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180827 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Mips/MipsISelLowering.cpp b/lib/Target/Mips/MipsISelLowering.cpp
index 611d483..4d76181 100644
--- a/lib/Target/Mips/MipsISelLowering.cpp
+++ b/lib/Target/Mips/MipsISelLowering.cpp
@@ -2831,8 +2831,8 @@
return std::make_pair((unsigned)Mips::T9_64, &Mips::CPU64RegsRegClass);
case 'l': // register suitable for indirect jump
if (VT == MVT::i32)
- return std::make_pair((unsigned)Mips::LO, &Mips::HILORegClass);
- return std::make_pair((unsigned)Mips::LO64, &Mips::HILO64RegClass);
+ return std::make_pair((unsigned)Mips::LO, &Mips::LORegsRegClass);
+ return std::make_pair((unsigned)Mips::LO64, &Mips::LORegs64RegClass);
case 'x': // register suitable for indirect jump
// Fixme: Not triggering the use of both hi and low
// This will generate an error message