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#ifndef AMALGAM_SSA_H
#define AMALGAM_SSA_H
#include "../std/buffer.h"
#include "../std/hash_map.h"
#include "../std/defs.h"
#include "../defs.h"
#include <setjmp.h>
#define SSA_ERR_EXTERN_FUNC_SIG_MISMATCH -20
/* Important: The number of fields in this enum can't exceed 255 */
typedef enum {
SSA_ASSIGN_INTER,
SSA_ASSIGN_STRING,
SSA_ASSIGN_REG,
SSA_ADD,
SSA_SUB,
SSA_IMUL,
SSA_MUL,
SSA_IDIV,
SSA_DIV,
SSA_EQUALS,
SSA_FUNC_START,
SSA_FUNC_END,
SSA_PUSH,
SSA_PUSH_RET,
SSA_CALL,
SSA_CALL_EXTERN,
SSA_JUMP_ZERO,
SSA_JUMP,
SSA_RET,
SSA_LABEL
} SsaInstruction;
typedef enum {
SSA_NUMBER_TYPE_INTEGER,
SSA_NUMBER_TYPE_FLOAT
} SsaNumberType;
typedef struct {
union {
i64 integer;
f64 floating;
} value;
SsaNumberType type;
} SsaNumber;
typedef struct {
FunctionSignature *func_sig;
BufferView name;
} SsaExternFunc;
typedef struct {
FunctionSignature *func_sig;
BufferView name;
} SsaExportFunc;
typedef struct {
FunctionSignature *func_sig;
} SsaFunc;
typedef i16 JumpOffset;
typedef i16 SsaRegister;
typedef u16 SsaIntermediateIndex;
typedef u16 SsaStringIndex;
typedef u16 SsaExternFuncIndex;
typedef u16 SsaExportFuncIndex;
typedef u16 SsaFuncIndex;
typedef u16 SsaLabelIndex;
typedef struct {
Buffer/*instruction data*/ instructions;
HashMapType(SsaNumber, SsaIntermediateIndex) intermediates_map;
Buffer/*SsaNumber*/ intermediates;
HashMapType(BufferView, SsaStringIndex) strings_map;
Buffer/*BufferView*/ strings;
HashMapType(BufferView, SsaExternFuncIndex) extern_funcs_map;
Buffer/*SsaExternFunc*/ extern_funcs;
Buffer/*SsaExportFunc*/ export_funcs;
Buffer/*SsaFunc*/ funcs;
SsaIntermediateIndex intermediate_counter;
SsaStringIndex string_counter;
SsaExternFuncIndex extern_func_counter;
SsaExportFuncIndex export_func_counter;
SsaFuncIndex func_counter;
SsaRegister reg_counter;
SsaRegister param_counter;
SsaLabelIndex label_counter;
Parser *parser; /* Borrowed */
} Ssa;
typedef struct {
SsaRegister lhs;
u16 rhs;
} SsaInsForm1;
typedef struct {
SsaRegister result;
SsaRegister lhs;
SsaRegister rhs;
} SsaInsForm2;
typedef struct {
u8 flags;
u16 num_local_vars_regs;
} SsaInsFuncStart;
typedef struct {
u8 num_args;
FunctionDecl *func_decl;
u8 import_index;
} SsaInsFuncCall;
typedef struct {
u8 num_args;
LhsExpr *func_decl_lhs;
int import_index;
} SsaInsFuncCallExtern;
typedef struct {
SsaRegister condition_reg;
SsaLabelIndex target_label;
} SsaInsJumpZero;
typedef struct {
SsaLabelIndex target_label;
} SsaInsJump;
/* None of these functions are thread-safe */
SsaNumber create_ssa_integer(i64 value);
SsaNumber create_ssa_float(f64 value);
SsaNumber ssa_get_intermediate(Ssa *self, SsaIntermediateIndex index);
BufferView ssa_get_string(Ssa *self, SsaStringIndex index);
CHECK_RESULT int ssa_init(Ssa *self, Parser *parser);
typedef struct {
jmp_buf env;
Ssa *ssa;
amal_compiler *compiler;
/* 0 if the current scope belongs to the file, otherwise ParserFileScopeReference's import_index (the import file that contains the scope) */
u8 import_index;
} SsaCompilerContext;
/* longjump to context->env on failure */
void scope_generate_ssa(Scope *self, SsaCompilerContext *context);
#endif
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