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Simple preopt: Fold (imm OP x) into (OP_IMM x imm) whenever possible;

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Benjamin Bouvier
2019-07-31 12:43:01 +02:00
parent 23ac723d4c
commit 057d4f6e3c
1 changed files with 5 additions and 0 deletions
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5
cranelift/codegen/src/simple_preopt.rs
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@@ -556,6 +556,11 @@ fn simplify(pos: &mut FuncCursor, inst: Inst) {
simplify(pos, inst); simplify(pos, inst);
} else if let Some(imm) = resolve_imm64_value(&pos.func.dfg, args[0]) { } else if let Some(imm) = resolve_imm64_value(&pos.func.dfg, args[0]) {
let new_opcode = match opcode { let new_opcode = match opcode {
Opcode::Iadd => Opcode::IaddImm,
Opcode::Imul => Opcode::ImulImm,
Opcode::Band => Opcode::BandImm,
Opcode::Bor => Opcode::BorImm,
Opcode::Bxor => Opcode::BxorImm,
Opcode::Isub => Opcode::IrsubImm, Opcode::Isub => Opcode::IrsubImm,
_ => return, _ => return,
}; };