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mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-12-15 20:29:48 +00:00

Add support for GR32 <-> FR32 cross class copies.

We already support GR64 <-> VR128 copies.  All of these copies break
partial register dependencies by zeroing the high part of the target
register.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140348 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen 2011-09-22 22:45:24 +00:00
parent da7d6ccef5
commit 4bd89873be

View File

@ -2158,6 +2158,17 @@ static unsigned CopyToFromAsymmetricReg(unsigned DestReg, unsigned SrcReg,
return X86::MOV64toSDrr;
}
// SrcReg(FR32) -> DestReg(GR32)
// SrcReg(GR32) -> DestReg(FR32)
if (X86::GR32RegClass.contains(DestReg) && X86::FR32RegClass.contains(SrcReg))
// Copy from a FR32 register to a GR32 register.
return HasAVX ? X86::VMOVSS2DIrr : X86::MOVSS2DIrr;
if (X86::FR32RegClass.contains(DestReg) && X86::GR32RegClass.contains(SrcReg))
// Copy from a GR32 register to a FR32 register.
return HasAVX ? X86::VMOVDI2SSrr : X86::MOVDI2SSrr;
return 0;
}