cfe5312fcc
turned into generic ones (as they'll be useful everywhere). Node arguments for predicates require the '%' prefix for consistency. Hex numbers are permitted.
32 lines
695 B
C
32 lines
695 B
C
#include "mcg.h"
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bool burm_predicate_signed_constant(struct burm_node* node, arith size)
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{
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struct ir* ir = node->ir;
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arith pivot = 1<<(size-1);
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arith mask = ~((1<<size) - 1);
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assert(ir->opcode == IR_CONST);
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return ((ir->u.ivalue + pivot) & mask) == 0;
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}
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bool burm_predicate_unsigned_constant(struct burm_node* node, arith size)
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{
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struct ir* ir = node->ir;
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arith mask = ~((1<<size) - 1);
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assert(ir->opcode == IR_CONST);
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return (ir->u.ivalue & mask) == 0;
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}
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bool burm_predicate_specific_constant(struct burm_node* node, arith val)
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{
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struct ir* ir = node->ir;
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assert(ir->opcode == IR_CONST);
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return ir->u.ivalue == val;
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}
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/* vim: set sw=4 ts=4 expandtab : */
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