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machinst x64: check SSE requirements for instructions against enabled features;

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This commit is contained in:
Benjamin Bouvier
2020-10-02 16:59:01 +02:00
parent c5bbc87498
commit e32e6fb612
3 changed files with 76 additions and 1 deletions
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65
cranelift/codegen/src/isa/x64/inst/mod.rs
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@@ -502,6 +502,71 @@ pub(crate) fn low32_will_sign_extend_to_64(x: u64) -> bool {
xs == ((xs << 32) >> 32)
}
impl Inst {
fn isa_requirement(&self) -> Option<InstructionSet> {
match self {
// These instructions are part of SSE2, which is a basic requirement in Cranelift, and
// don't have to be checked.
Inst::AluRmiR { .. }
| Inst::AtomicRmwSeq { .. }
| Inst::CallKnown { .. }
| Inst::CallUnknown { .. }
| Inst::CheckedDivOrRemSeq { .. }
| Inst::Cmove { .. }
| Inst::CmpRmiR { .. }
| Inst::CvtFloatToSintSeq { .. }
| Inst::CvtFloatToUintSeq { .. }
| Inst::CvtUint64ToFloatSeq { .. }
| Inst::Div { .. }
| Inst::EpiloguePlaceholder
| Inst::Fence { .. }
| Inst::Hlt
| Inst::Imm { .. }
| Inst::JmpCond { .. }
| Inst::JmpIf { .. }
| Inst::JmpKnown { .. }
| Inst::JmpTableSeq { .. }
| Inst::JmpUnknown { .. }
| Inst::LoadEffectiveAddress { .. }
| Inst::LoadExtName { .. }
| Inst::LockCmpxchg { .. }
| Inst::Mov64MR { .. }
| Inst::MovRM { .. }
| Inst::MovRR { .. }
| Inst::MovsxRmR { .. }
| Inst::MovzxRmR { .. }
| Inst::MulHi { .. }
| Inst::Neg { .. }
| Inst::Not { .. }
| Inst::Nop { .. }
| Inst::Pop64 { .. }
| Inst::Push64 { .. }
| Inst::Ret
| Inst::Setcc { .. }
| Inst::ShiftR { .. }
| Inst::SignExtendData { .. }
| Inst::TrapIf { .. }
| Inst::Ud2 { .. }
| Inst::UnaryRmR { .. }
| Inst::VirtualSPOffsetAdj { .. }
| Inst::XmmCmove { .. }
| Inst::XmmCmpRmR { .. }
| Inst::XmmLoadConstSeq { .. }
| Inst::XmmMinMaxSeq { .. }
| Inst::XmmUninitializedValue { .. } => None,
// These use dynamic SSE opcodes.
Inst::GprToXmm { op, .. }
| Inst::XmmMovRM { op, .. }
| Inst::XmmRmiReg { opcode: op, .. }
| Inst::XmmRmR { op, .. }
| Inst::XmmRmRImm { op, .. }
| Inst::XmmToGpr { op, .. }
| Inst::XmmUnaryRmR { op, .. } => Some(op.available_from()),
}
}
}
// Handy constructors for Insts.
impl Inst {