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3f057e2400
Create a special subclass for sub, because two backends can support "subtract from immediate". Drop all backend support for an immediate as the second operand, as we transform sub to add during optimize. Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
21 lines
478 B
C
21 lines
478 B
C
/* SPDX-License-Identifier: MIT */
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/*
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* Define RISC-V target-specific operand constraints.
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* Copyright (c) 2021 Linaro
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*/
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/*
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* Define constraint letters for register sets:
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* REGS(letter, register_mask)
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*/
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REGS('r', ALL_GENERAL_REGS)
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REGS('v', ALL_VECTOR_REGS)
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/*
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* Define constraint letters for constants:
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* CONST(letter, TCG_CT_CONST_* bit set)
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*/
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CONST('I', TCG_CT_CONST_S12)
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CONST('K', TCG_CT_CONST_S5)
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CONST('L', TCG_CT_CONST_CMP_VI)
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CONST('M', TCG_CT_CONST_M12)
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