From 2825b8f0ea989e0d50f4287970f1461a1050ffb5 Mon Sep 17 00:00:00 2001 From: Hao Liu Date: Mon, 10 Feb 2014 03:16:22 +0000 Subject: [AArch64]Implement the copy of two FPR8 registers by using FMOVss of two FPR32 registers in copyPhysReg. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201061 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Target/AArch64/AArch64InstrInfo.cpp | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'lib/Target') diff --git a/lib/Target/AArch64/AArch64InstrInfo.cpp b/lib/Target/AArch64/AArch64InstrInfo.cpp index ba185a436f..9c27f82d2b 100644 --- a/lib/Target/AArch64/AArch64InstrInfo.cpp +++ b/lib/Target/AArch64/AArch64InstrInfo.cpp @@ -132,6 +132,16 @@ void AArch64InstrInfo::copyPhysReg(MachineBasicBlock &MBB, .addImm(16); return; } + } else if (AArch64::FPR8RegClass.contains(DestReg, SrcReg)) { + // The copy of two FPR8 registers is implemented by the copy of two FPR32 + const TargetRegisterInfo *TRI = &getRegisterInfo(); + unsigned Dst = TRI->getMatchingSuperReg(DestReg, AArch64::sub_8, + &AArch64::FPR32RegClass); + unsigned Src = TRI->getMatchingSuperReg(SrcReg, AArch64::sub_8, + &AArch64::FPR32RegClass); + BuildMI(MBB, I, DL, get(AArch64::FMOVss), Dst) + .addReg(Src); + return; } else if (AArch64::FPR16RegClass.contains(DestReg, SrcReg)) { // The copy of two FPR16 registers is implemented by the copy of two FPR32 const TargetRegisterInfo *TRI = &getRegisterInfo(); -- cgit v1.2.3