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Maxime Chevalier-Boisvert 2021-03-30 15:37:20 -04:00 • committed by Alan Wu
parent ac1aa84c1a
commit c5f3126428
1 changed files with 21 additions and 8 deletions
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29
yjit_core.h
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@ -20,10 +20,12 @@
// Maximum number of temp value types we keep track of // Maximum number of temp value types we keep track of
#define MAX_TEMP_TYPES 8 #define MAX_TEMP_TYPES 8
// Maximum number of local variable types we keep track of
#define MAX_LOCAL_TYPES 8
// Default versioning context (no type information) // Default versioning context (no type information)
#define DEFAULT_CTX ( (ctx_t){ 0 } ) #define DEFAULT_CTX ( (ctx_t){ 0 } )
/** /**
Represent the type of a value (local/stack/self) in YJIT Represent the type of a value (local/stack/self) in YJIT
*/ */
@ -38,11 +40,10 @@ typedef struct yjit_val_type
// NOTE: we could switch this to an enum, // NOTE: we could switch this to an enum,
// but then we also need a value for "unknown type" // but then we also need a value for "unknown type"
uint8_t is_fixnum : 1; uint8_t is_fixnum : 1;
uint8_t is_bool : 1; // is this useful? //uint8_t is_array : 1; // for opt_aref
uint8_t is_array : 1; // for opt_aref //uint8_t is_hash : 1; // for opt_aref
uint8_t is_hash : 1; // for opt_aref //uint8_t is_symbol : 1;
uint8_t is_symbol : 1; //uint8_t is_string : 1;
uint8_t is_string : 1;
} val_type_t; } val_type_t;
STATIC_ASSERT(val_type_size, sizeof(val_type_t) == 1); STATIC_ASSERT(val_type_size, sizeof(val_type_t) == 1);
@ -63,7 +64,7 @@ typedef enum yjit_temp_loc
{ {
TEMP_STACK = 0, TEMP_STACK = 0,
TEMP_SELF, TEMP_SELF,
TEMP_LOCAL, // Local with index //TEMP_LOCAL, // Local with index
//TEMP_CONST, // Small constant //TEMP_CONST, // Small constant
} temp_loc_t; } temp_loc_t;
@ -74,7 +75,7 @@ typedef struct yjit_temp_mapping
uint8_t kind: 2; uint8_t kind: 2;
// Index of the local variale, // Index of the local variale,
// or small non-negative constant // or small non-negative constant in [0, 63]
uint8_t idx : 6; uint8_t idx : 6;
} temp_mapping_t; } temp_mapping_t;
@ -113,9 +114,21 @@ typedef struct yjit_context
// This represents how far the JIT's SP is from the "real" SP // This represents how far the JIT's SP is from the "real" SP
int16_t sp_offset; int16_t sp_offset;
// FIXME: no longer need this bit after type mapping refactoring
// Whether we know self is a heap object // Whether we know self is a heap object
bool self_is_object : 1; bool self_is_object : 1;
} ctx_t; } ctx_t;
// Tuple of (iseq, idx) used to idenfity basic blocks // Tuple of (iseq, idx) used to idenfity basic blocks