diff options
author | Andy Belle-Isle <drumsetmonkey@gmail.com> | 2019-08-30 00:19:31 -0400 |
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committer | Andy Belle-Isle <drumsetmonkey@gmail.com> | 2019-08-30 00:19:31 -0400 |
commit | bd3fe0cac583739bc0d7c4b5c8f301bb350abca0 (patch) | |
tree | 7eeb1aabcebd6999de1c3457d0882246ec0ff4d4 /lib/LuaJIT/src/lj_jit.h | |
parent | 2662ac356ce14dacfbc91689fd37244facff4989 (diff) |
Renamed lib to deps so github will ignore it for language stats
Diffstat (limited to 'lib/LuaJIT/src/lj_jit.h')
-rw-r--r-- | lib/LuaJIT/src/lj_jit.h | 505 |
1 files changed, 0 insertions, 505 deletions
diff --git a/lib/LuaJIT/src/lj_jit.h b/lib/LuaJIT/src/lj_jit.h deleted file mode 100644 index 5d41ef4..0000000 --- a/lib/LuaJIT/src/lj_jit.h +++ /dev/null @@ -1,505 +0,0 @@ -/* -** Common definitions for the JIT compiler. -** Copyright (C) 2005-2017 Mike Pall. See Copyright Notice in luajit.h -*/ - -#ifndef _LJ_JIT_H -#define _LJ_JIT_H - -#include "lj_obj.h" -#include "lj_ir.h" - -/* JIT engine flags. */ -#define JIT_F_ON 0x00000001 - -/* CPU-specific JIT engine flags. */ -#if LJ_TARGET_X86ORX64 -#define JIT_F_SSE2 0x00000010 -#define JIT_F_SSE3 0x00000020 -#define JIT_F_SSE4_1 0x00000040 -#define JIT_F_PREFER_IMUL 0x00000080 -#define JIT_F_LEA_AGU 0x00000100 -#define JIT_F_BMI2 0x00000200 - -/* Names for the CPU-specific flags. Must match the order above. */ -#define JIT_F_CPU_FIRST JIT_F_SSE2 -#define JIT_F_CPUSTRING "\4SSE2\4SSE3\6SSE4.1\3AMD\4ATOM\4BMI2" -#elif LJ_TARGET_ARM -#define JIT_F_ARMV6_ 0x00000010 -#define JIT_F_ARMV6T2_ 0x00000020 -#define JIT_F_ARMV7 0x00000040 -#define JIT_F_VFPV2 0x00000080 -#define JIT_F_VFPV3 0x00000100 - -#define JIT_F_ARMV6 (JIT_F_ARMV6_|JIT_F_ARMV6T2_|JIT_F_ARMV7) -#define JIT_F_ARMV6T2 (JIT_F_ARMV6T2_|JIT_F_ARMV7) -#define JIT_F_VFP (JIT_F_VFPV2|JIT_F_VFPV3) - -/* Names for the CPU-specific flags. Must match the order above. */ -#define JIT_F_CPU_FIRST JIT_F_ARMV6_ -#define JIT_F_CPUSTRING "\5ARMv6\7ARMv6T2\5ARMv7\5VFPv2\5VFPv3" -#elif LJ_TARGET_PPC -#define JIT_F_SQRT 0x00000010 -#define JIT_F_ROUND 0x00000020 - -/* Names for the CPU-specific flags. Must match the order above. */ -#define JIT_F_CPU_FIRST JIT_F_SQRT -#define JIT_F_CPUSTRING "\4SQRT\5ROUND" -#elif LJ_TARGET_MIPS -#define JIT_F_MIPSXXR2 0x00000010 - -/* Names for the CPU-specific flags. Must match the order above. */ -#define JIT_F_CPU_FIRST JIT_F_MIPSXXR2 -#if LJ_TARGET_MIPS32 -#define JIT_F_CPUSTRING "\010MIPS32R2" -#else -#define JIT_F_CPUSTRING "\010MIPS64R2" -#endif -#else -#define JIT_F_CPU_FIRST 0 -#define JIT_F_CPUSTRING "" -#endif - -/* Optimization flags. */ -#define JIT_F_OPT_MASK 0x0fff0000 - -#define JIT_F_OPT_FOLD 0x00010000 -#define JIT_F_OPT_CSE 0x00020000 -#define JIT_F_OPT_DCE 0x00040000 -#define JIT_F_OPT_FWD 0x00080000 -#define JIT_F_OPT_DSE 0x00100000 -#define JIT_F_OPT_NARROW 0x00200000 -#define JIT_F_OPT_LOOP 0x00400000 -#define JIT_F_OPT_ABC 0x00800000 -#define JIT_F_OPT_SINK 0x01000000 -#define JIT_F_OPT_FUSE 0x02000000 - -/* Optimizations names for -O. Must match the order above. */ -#define JIT_F_OPT_FIRST JIT_F_OPT_FOLD -#define JIT_F_OPTSTRING \ - "\4fold\3cse\3dce\3fwd\3dse\6narrow\4loop\3abc\4sink\4fuse" - -/* Optimization levels set a fixed combination of flags. */ -#define JIT_F_OPT_0 0 -#define JIT_F_OPT_1 (JIT_F_OPT_FOLD|JIT_F_OPT_CSE|JIT_F_OPT_DCE) -#define JIT_F_OPT_2 (JIT_F_OPT_1|JIT_F_OPT_NARROW|JIT_F_OPT_LOOP) -#define JIT_F_OPT_3 (JIT_F_OPT_2|\ - JIT_F_OPT_FWD|JIT_F_OPT_DSE|JIT_F_OPT_ABC|JIT_F_OPT_SINK|JIT_F_OPT_FUSE) -#define JIT_F_OPT_DEFAULT JIT_F_OPT_3 - -#if LJ_TARGET_WINDOWS || LJ_64 -/* See: http://blogs.msdn.com/oldnewthing/archive/2003/10/08/55239.aspx */ -#define JIT_P_sizemcode_DEFAULT 64 -#else -/* Could go as low as 4K, but the mmap() overhead would be rather high. */ -#define JIT_P_sizemcode_DEFAULT 32 -#endif - -/* Optimization parameters and their defaults. Length is a char in octal! */ -#define JIT_PARAMDEF(_) \ - _(\010, maxtrace, 1000) /* Max. # of traces in cache. */ \ - _(\011, maxrecord, 4000) /* Max. # of recorded IR instructions. */ \ - _(\012, maxirconst, 500) /* Max. # of IR constants of a trace. */ \ - _(\007, maxside, 100) /* Max. # of side traces of a root trace. */ \ - _(\007, maxsnap, 500) /* Max. # of snapshots for a trace. */ \ - _(\011, minstitch, 0) /* Min. # of IR ins for a stitched trace. */ \ - \ - _(\007, hotloop, 56) /* # of iter. to detect a hot loop/call. */ \ - _(\007, hotexit, 10) /* # of taken exits to start a side trace. */ \ - _(\007, tryside, 4) /* # of attempts to compile a side trace. */ \ - \ - _(\012, instunroll, 4) /* Max. unroll for instable loops. */ \ - _(\012, loopunroll, 15) /* Max. unroll for loop ops in side traces. */ \ - _(\012, callunroll, 3) /* Max. unroll for recursive calls. */ \ - _(\011, recunroll, 2) /* Min. unroll for true recursion. */ \ - \ - /* Size of each machine code area (in KBytes). */ \ - _(\011, sizemcode, JIT_P_sizemcode_DEFAULT) \ - /* Max. total size of all machine code areas (in KBytes). */ \ - _(\010, maxmcode, 512) \ - /* End of list. */ - -enum { -#define JIT_PARAMENUM(len, name, value) JIT_P_##name, -JIT_PARAMDEF(JIT_PARAMENUM) -#undef JIT_PARAMENUM - JIT_P__MAX -}; - -#define JIT_PARAMSTR(len, name, value) #len #name -#define JIT_P_STRING JIT_PARAMDEF(JIT_PARAMSTR) - -/* Trace compiler state. */ -typedef enum { - LJ_TRACE_IDLE, /* Trace compiler idle. */ - LJ_TRACE_ACTIVE = 0x10, - LJ_TRACE_RECORD, /* Bytecode recording active. */ - LJ_TRACE_START, /* New trace started. */ - LJ_TRACE_END, /* End of trace. */ - LJ_TRACE_ASM, /* Assemble trace. */ - LJ_TRACE_ERR /* Trace aborted with error. */ -} TraceState; - -/* Post-processing action. */ -typedef enum { - LJ_POST_NONE, /* No action. */ - LJ_POST_FIXCOMP, /* Fixup comparison and emit pending guard. */ - LJ_POST_FIXGUARD, /* Fixup and emit pending guard. */ - LJ_POST_FIXGUARDSNAP, /* Fixup and emit pending guard and snapshot. */ - LJ_POST_FIXBOOL, /* Fixup boolean result. */ - LJ_POST_FIXCONST, /* Fixup constant results. */ - LJ_POST_FFRETRY /* Suppress recording of retried fast functions. */ -} PostProc; - -/* Machine code type. */ -#if LJ_TARGET_X86ORX64 -typedef uint8_t MCode; -#else -typedef uint32_t MCode; -#endif - -/* Linked list of MCode areas. */ -typedef struct MCLink { - MCode *next; /* Next area. */ - size_t size; /* Size of current area. */ -} MCLink; - -/* Stack snapshot header. */ -typedef struct SnapShot { - uint32_t mapofs; /* Offset into snapshot map. */ - IRRef1 ref; /* First IR ref for this snapshot. */ - uint8_t nslots; /* Number of valid slots. */ - uint8_t topslot; /* Maximum frame extent. */ - uint8_t nent; /* Number of compressed entries. */ - uint8_t count; /* Count of taken exits for this snapshot. */ -} SnapShot; - -#define SNAPCOUNT_DONE 255 /* Already compiled and linked a side trace. */ - -/* Compressed snapshot entry. */ -typedef uint32_t SnapEntry; - -#define SNAP_FRAME 0x010000 /* Frame slot. */ -#define SNAP_CONT 0x020000 /* Continuation slot. */ -#define SNAP_NORESTORE 0x040000 /* No need to restore slot. */ -#define SNAP_SOFTFPNUM 0x080000 /* Soft-float number. */ -LJ_STATIC_ASSERT(SNAP_FRAME == TREF_FRAME); -LJ_STATIC_ASSERT(SNAP_CONT == TREF_CONT); - -#define SNAP(slot, flags, ref) (((SnapEntry)(slot) << 24) + (flags) + (ref)) -#define SNAP_TR(slot, tr) \ - (((SnapEntry)(slot) << 24) + ((tr) & (TREF_CONT|TREF_FRAME|TREF_REFMASK))) -#if !LJ_FR2 -#define SNAP_MKPC(pc) ((SnapEntry)u32ptr(pc)) -#endif -#define SNAP_MKFTSZ(ftsz) ((SnapEntry)(ftsz)) -#define snap_ref(sn) ((sn) & 0xffff) -#define snap_slot(sn) ((BCReg)((sn) >> 24)) -#define snap_isframe(sn) ((sn) & SNAP_FRAME) -#define snap_setref(sn, ref) (((sn) & (0xffff0000&~SNAP_NORESTORE)) | (ref)) - -static LJ_AINLINE const BCIns *snap_pc(SnapEntry *sn) -{ -#if LJ_FR2 - uint64_t pcbase; - memcpy(&pcbase, sn, sizeof(uint64_t)); - return (const BCIns *)(pcbase >> 8); -#else - return (const BCIns *)(uintptr_t)*sn; -#endif -} - -/* Snapshot and exit numbers. */ -typedef uint32_t SnapNo; -typedef uint32_t ExitNo; - -/* Trace number. */ -typedef uint32_t TraceNo; /* Used to pass around trace numbers. */ -typedef uint16_t TraceNo1; /* Stored trace number. */ - -/* Type of link. ORDER LJ_TRLINK */ -typedef enum { - LJ_TRLINK_NONE, /* Incomplete trace. No link, yet. */ - LJ_TRLINK_ROOT, /* Link to other root trace. */ - LJ_TRLINK_LOOP, /* Loop to same trace. */ - LJ_TRLINK_TAILREC, /* Tail-recursion. */ - LJ_TRLINK_UPREC, /* Up-recursion. */ - LJ_TRLINK_DOWNREC, /* Down-recursion. */ - LJ_TRLINK_INTERP, /* Fallback to interpreter. */ - LJ_TRLINK_RETURN, /* Return to interpreter. */ - LJ_TRLINK_STITCH /* Trace stitching. */ -} TraceLink; - -/* Trace object. */ -typedef struct GCtrace { - GCHeader; - uint16_t nsnap; /* Number of snapshots. */ - IRRef nins; /* Next IR instruction. Biased with REF_BIAS. */ -#if LJ_GC64 - uint32_t unused_gc64; -#endif - GCRef gclist; - IRIns *ir; /* IR instructions/constants. Biased with REF_BIAS. */ - IRRef nk; /* Lowest IR constant. Biased with REF_BIAS. */ - uint32_t nsnapmap; /* Number of snapshot map elements. */ - SnapShot *snap; /* Snapshot array. */ - SnapEntry *snapmap; /* Snapshot map. */ - GCRef startpt; /* Starting prototype. */ - MRef startpc; /* Bytecode PC of starting instruction. */ - BCIns startins; /* Original bytecode of starting instruction. */ - MSize szmcode; /* Size of machine code. */ - MCode *mcode; /* Start of machine code. */ - MSize mcloop; /* Offset of loop start in machine code. */ - uint16_t nchild; /* Number of child traces (root trace only). */ - uint16_t spadjust; /* Stack pointer adjustment (offset in bytes). */ - TraceNo1 traceno; /* Trace number. */ - TraceNo1 link; /* Linked trace (or self for loops). */ - TraceNo1 root; /* Root trace of side trace (or 0 for root traces). */ - TraceNo1 nextroot; /* Next root trace for same prototype. */ - TraceNo1 nextside; /* Next side trace of same root trace. */ - uint8_t sinktags; /* Trace has SINK tags. */ - uint8_t topslot; /* Top stack slot already checked to be allocated. */ - uint8_t linktype; /* Type of link. */ - uint8_t unused1; -#ifdef LUAJIT_USE_GDBJIT - void *gdbjit_entry; /* GDB JIT entry. */ -#endif -} GCtrace; - -#define gco2trace(o) check_exp((o)->gch.gct == ~LJ_TTRACE, (GCtrace *)(o)) -#define traceref(J, n) \ - check_exp((n)>0 && (MSize)(n)<J->sizetrace, (GCtrace *)gcref(J->trace[(n)])) - -LJ_STATIC_ASSERT(offsetof(GChead, gclist) == offsetof(GCtrace, gclist)); - -static LJ_AINLINE MSize snap_nextofs(GCtrace *T, SnapShot *snap) -{ - if (snap+1 == &T->snap[T->nsnap]) - return T->nsnapmap; - else - return (snap+1)->mapofs; -} - -/* Round-robin penalty cache for bytecodes leading to aborted traces. */ -typedef struct HotPenalty { - MRef pc; /* Starting bytecode PC. */ - uint16_t val; /* Penalty value, i.e. hotcount start. */ - uint16_t reason; /* Abort reason (really TraceErr). */ -} HotPenalty; - -#define PENALTY_SLOTS 64 /* Penalty cache slot. Must be a power of 2. */ -#define PENALTY_MIN (36*2) /* Minimum penalty value. */ -#define PENALTY_MAX 60000 /* Maximum penalty value. */ -#define PENALTY_RNDBITS 4 /* # of random bits to add to penalty value. */ - -/* Round-robin backpropagation cache for narrowing conversions. */ -typedef struct BPropEntry { - IRRef1 key; /* Key: original reference. */ - IRRef1 val; /* Value: reference after conversion. */ - IRRef mode; /* Mode for this entry (currently IRCONV_*). */ -} BPropEntry; - -/* Number of slots for the backpropagation cache. Must be a power of 2. */ -#define BPROP_SLOTS 16 - -/* Scalar evolution analysis cache. */ -typedef struct ScEvEntry { - MRef pc; /* Bytecode PC of FORI. */ - IRRef1 idx; /* Index reference. */ - IRRef1 start; /* Constant start reference. */ - IRRef1 stop; /* Constant stop reference. */ - IRRef1 step; /* Constant step reference. */ - IRType1 t; /* Scalar type. */ - uint8_t dir; /* Direction. 1: +, 0: -. */ -} ScEvEntry; - -/* Reverse bytecode map (IRRef -> PC). Only for selected instructions. */ -typedef struct RBCHashEntry { - MRef pc; /* Bytecode PC. */ - GCRef pt; /* Prototype. */ - IRRef ref; /* IR reference. */ -} RBCHashEntry; - -/* Number of slots in the reverse bytecode hash table. Must be a power of 2. */ -#define RBCHASH_SLOTS 8 - -/* 128 bit SIMD constants. */ -enum { - LJ_KSIMD_ABS, - LJ_KSIMD_NEG, - LJ_KSIMD__MAX -}; - -enum { -#if LJ_TARGET_X86ORX64 - LJ_K64_TOBIT, /* 2^52 + 2^51 */ - LJ_K64_2P64, /* 2^64 */ - LJ_K64_M2P64, /* -2^64 */ -#if LJ_32 - LJ_K64_M2P64_31, /* -2^64 or -2^31 */ -#else - LJ_K64_M2P64_31 = LJ_K64_M2P64, -#endif -#endif -#if LJ_TARGET_MIPS - LJ_K64_2P31, /* 2^31 */ -#if LJ_64 - LJ_K64_2P63, /* 2^63 */ - LJ_K64_M2P64, /* -2^64 */ -#endif -#endif - LJ_K64__MAX, -}; - -enum { -#if LJ_TARGET_X86ORX64 - LJ_K32_M2P64_31, /* -2^64 or -2^31 */ -#endif -#if LJ_TARGET_PPC - LJ_K32_2P52_2P31, /* 2^52 + 2^31 */ - LJ_K32_2P52, /* 2^52 */ -#endif -#if LJ_TARGET_PPC || LJ_TARGET_MIPS - LJ_K32_2P31, /* 2^31 */ -#endif -#if LJ_TARGET_MIPS64 - LJ_K32_2P63, /* 2^63 */ - LJ_K32_M2P64, /* -2^64 */ -#endif - LJ_K32__MAX -}; - -/* Get 16 byte aligned pointer to SIMD constant. */ -#define LJ_KSIMD(J, n) \ - ((TValue *)(((intptr_t)&J->ksimd[2*(n)] + 15) & ~(intptr_t)15)) - -/* Set/reset flag to activate the SPLIT pass for the current trace. */ -#if LJ_SOFTFP32 || (LJ_32 && LJ_HASFFI) -#define lj_needsplit(J) (J->needsplit = 1) -#define lj_resetsplit(J) (J->needsplit = 0) -#else -#define lj_needsplit(J) UNUSED(J) -#define lj_resetsplit(J) UNUSED(J) -#endif - -/* Fold state is used to fold instructions on-the-fly. */ -typedef struct FoldState { - IRIns ins; /* Currently emitted instruction. */ - IRIns left[2]; /* Instruction referenced by left operand. */ - IRIns right[2]; /* Instruction referenced by right operand. */ -} FoldState; - -/* JIT compiler state. */ -typedef struct jit_State { - GCtrace cur; /* Current trace. */ - GCtrace *curfinal; /* Final address of current trace (set during asm). */ - - lua_State *L; /* Current Lua state. */ - const BCIns *pc; /* Current PC. */ - GCfunc *fn; /* Current function. */ - GCproto *pt; /* Current prototype. */ - TRef *base; /* Current frame base, points into J->slots. */ - - uint32_t flags; /* JIT engine flags. */ - BCReg maxslot; /* Relative to baseslot. */ - BCReg baseslot; /* Current frame base, offset into J->slots. */ - - uint8_t mergesnap; /* Allowed to merge with next snapshot. */ - uint8_t needsnap; /* Need snapshot before recording next bytecode. */ - IRType1 guardemit; /* Accumulated IRT_GUARD for emitted instructions. */ - uint8_t bcskip; /* Number of bytecode instructions to skip. */ - - FoldState fold; /* Fold state. */ - - const BCIns *bc_min; /* Start of allowed bytecode range for root trace. */ - MSize bc_extent; /* Extent of the range. */ - - TraceState state; /* Trace compiler state. */ - - int32_t instunroll; /* Unroll counter for instable loops. */ - int32_t loopunroll; /* Unroll counter for loop ops in side traces. */ - int32_t tailcalled; /* Number of successive tailcalls. */ - int32_t framedepth; /* Current frame depth. */ - int32_t retdepth; /* Return frame depth (count of RETF). */ - - TValue ksimd[LJ_KSIMD__MAX*2+1]; /* 16 byte aligned SIMD constants. */ - TValue k64[LJ_K64__MAX]; /* Common 8 byte constants used by backends. */ - uint32_t k32[LJ_K32__MAX]; /* Ditto for 4 byte constants. */ - - IRIns *irbuf; /* Temp. IR instruction buffer. Biased with REF_BIAS. */ - IRRef irtoplim; /* Upper limit of instuction buffer (biased). */ - IRRef irbotlim; /* Lower limit of instuction buffer (biased). */ - IRRef loopref; /* Last loop reference or ref of final LOOP (or 0). */ - - MSize sizesnap; /* Size of temp. snapshot buffer. */ - SnapShot *snapbuf; /* Temp. snapshot buffer. */ - SnapEntry *snapmapbuf; /* Temp. snapshot map buffer. */ - MSize sizesnapmap; /* Size of temp. snapshot map buffer. */ - - PostProc postproc; /* Required post-processing after execution. */ -#if LJ_SOFTFP32 || (LJ_32 && LJ_HASFFI) - uint8_t needsplit; /* Need SPLIT pass. */ -#endif - uint8_t retryrec; /* Retry recording. */ - - GCRef *trace; /* Array of traces. */ - TraceNo freetrace; /* Start of scan for next free trace. */ - MSize sizetrace; /* Size of trace array. */ - IRRef1 ktrace; /* Reference to KGC with GCtrace. */ - - IRRef1 chain[IR__MAX]; /* IR instruction skip-list chain anchors. */ - TRef slot[LJ_MAX_JSLOTS+LJ_STACK_EXTRA]; /* Stack slot map. */ - - int32_t param[JIT_P__MAX]; /* JIT engine parameters. */ - - MCode *exitstubgroup[LJ_MAX_EXITSTUBGR]; /* Exit stub group addresses. */ - - HotPenalty penalty[PENALTY_SLOTS]; /* Penalty slots. */ - uint32_t penaltyslot; /* Round-robin index into penalty slots. */ - uint32_t prngstate; /* PRNG state. */ - -#ifdef LUAJIT_ENABLE_TABLE_BUMP - RBCHashEntry rbchash[RBCHASH_SLOTS]; /* Reverse bytecode map. */ -#endif - - BPropEntry bpropcache[BPROP_SLOTS]; /* Backpropagation cache slots. */ - uint32_t bpropslot; /* Round-robin index into bpropcache slots. */ - - ScEvEntry scev; /* Scalar evolution analysis cache slots. */ - - const BCIns *startpc; /* Bytecode PC of starting instruction. */ - TraceNo parent; /* Parent of current side trace (0 for root traces). */ - ExitNo exitno; /* Exit number in parent of current side trace. */ - - BCIns *patchpc; /* PC for pending re-patch. */ - BCIns patchins; /* Instruction for pending re-patch. */ - - int mcprot; /* Protection of current mcode area. */ - MCode *mcarea; /* Base of current mcode area. */ - MCode *mctop; /* Top of current mcode area. */ - MCode *mcbot; /* Bottom of current mcode area. */ - size_t szmcarea; /* Size of current mcode area. */ - size_t szallmcarea; /* Total size of all allocated mcode areas. */ - - TValue errinfo; /* Additional info element for trace errors. */ - -#if LJ_HASPROFILE - GCproto *prev_pt; /* Previous prototype. */ - BCLine prev_line; /* Previous line. */ - int prof_mode; /* Profiling mode: 0, 'f', 'l'. */ -#endif -} -#if LJ_TARGET_ARM -LJ_ALIGN(16) /* For DISPATCH-relative addresses in assembler part. */ -#endif -jit_State; - -/* Trivial PRNG e.g. used for penalty randomization. */ -static LJ_AINLINE uint32_t LJ_PRNG_BITS(jit_State *J, int bits) -{ - /* Yes, this LCG is very weak, but that doesn't matter for our use case. */ - J->prngstate = J->prngstate * 1103515245 + 12345; - return J->prngstate >> (32-bits); -} - -#endif |