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86 lines
2.6 KiB
C++
86 lines
2.6 KiB
C++
// This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details
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#pragma once
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namespace Luau
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{
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namespace CodeGen
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{
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namespace A64
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{
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// See Table C1-1 on page C1-229 of Arm ARM for A-profile architecture
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enum class ConditionA64
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{
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// EQ: integer (equal), floating-point (equal)
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Equal,
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// NE: integer (not equal), floating-point (not equal or unordered)
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NotEqual,
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// CS: integer (carry set), unsigned integer (greater than, equal), floating-point (greater than, equal or unordered)
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CarrySet,
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// CC: integer (carry clear), unsigned integer (less than), floating-point (less than)
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CarryClear,
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// MI: integer (negative), floating-point (less than)
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Minus,
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// PL: integer (positive or zero), floating-point (greater than, equal or unordered)
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Plus,
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// VS: integer (overflow), floating-point (unordered)
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Overflow,
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// VC: integer (no overflow), floating-point (ordered)
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NoOverflow,
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// HI: integer (unsigned higher), floating-point (greater than, or unordered)
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UnsignedGreater,
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// LS: integer (unsigned lower or same), floating-point (less than or equal)
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UnsignedLessEqual,
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// GE: integer (signed greater than or equal), floating-point (greater than or equal)
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GreaterEqual,
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// LT: integer (signed less than), floating-point (less than, or unordered)
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Less,
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// GT: integer (signed greater than), floating-point (greater than)
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Greater,
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// LE: integer (signed less than or equal), floating-point (less than, equal or unordered)
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LessEqual,
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// AL: always
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Always,
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Count
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};
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// Returns a condition that for 'a op b' will result in 'b op a'
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// Only a subset of conditions is allowed
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inline ConditionA64 getInverseCondition(ConditionA64 cond)
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{
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switch (cond)
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{
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case ConditionA64::Equal:
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return ConditionA64::Equal;
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case ConditionA64::NotEqual:
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return ConditionA64::NotEqual;
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case ConditionA64::UnsignedGreater:
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return ConditionA64::CarryClear;
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case ConditionA64::UnsignedLessEqual:
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return ConditionA64::CarrySet;
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case ConditionA64::GreaterEqual:
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return ConditionA64::LessEqual;
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case ConditionA64::Less:
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return ConditionA64::Greater;
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case ConditionA64::Greater:
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return ConditionA64::Less;
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case ConditionA64::LessEqual:
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return ConditionA64::GreaterEqual;
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default:
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CODEGEN_ASSERT(!"invalid ConditionA64 value for getInverseCondition");
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}
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return ConditionA64::Count;
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}
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} // namespace A64
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} // namespace CodeGen
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} // namespace Luau
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