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Viewing changes to src/lj_opt_narrow.c

Committer: Package Import Robot
Author(s): Enrico Tassi
Date: 2012-11-03 14:07:56 UTC
mfrom: (1.2.1) (15.1.1 experimental)
Revision ID: package-import@ubuntu.com-20121103140756-z0zcnyrwqlvuc2m5

Tags: 2.0.0+dfsg-1

New upstream release

files added:
.pc/.quilt_patches

.pc/.quilt_series

.pc/multi-arch-path.patch

.pc/multi-arch-path.patch/src

.pc/multi-arch-path.patch/src/luaconf.h

debian/patches/multi-arch-path.patch

dynasm/dasm_mips.h

dynasm/dasm_mips.lua

src/host

src/host/README

src/host/buildvm.c

src/host/buildvm.h

src/host/buildvm_asm.c

src/host/buildvm_fold.c

src/host/buildvm_lib.c

src/host/buildvm_peobj.c

src/host/genminilua.lua

src/host/minilua.c

src/jit

src/jit/bc.lua

src/jit/bcsave.lua

src/jit/dis_arm.lua

src/jit/dis_mips.lua

src/jit/dis_mipsel.lua

src/jit/dis_ppc.lua

src/jit/dis_x64.lua

src/jit/dis_x86.lua

src/jit/dump.lua

src/jit/v.lua

src/lj_asm_mips.h

src/lj_emit_mips.h

src/lj_load.c

src/lj_opt_sink.c

src/lj_strscan.c

src/lj_strscan.h

src/lj_target_mips.h

src/vm_arm.dasc

src/vm_mips.dasc

src/vm_ppc.dasc

src/vm_ppcspe.dasc

src/vm_x86.dasc

files removed:
.pc/beta9_hotfix1.patch

.pc/beta9_hotfix1.patch/src

.pc/beta9_hotfix1.patch/src/lj_bcwrite.c

.pc/beta9_hotfix1.patch/src/lj_lex.c

.pc/multi-arch-paths.patch

.pc/multi-arch-paths.patch/Makefile

.pc/multi-arch-paths.patch/src

.pc/multi-arch-paths.patch/src/Makefile

.pc/multi-arch-paths.patch/src/luaconf.h

debian/patches/beta9_hotfix1.patch

debian/patches/multi-arch-paths.patch

etc/strict.lua

lib/bc.lua

lib/bcsave.lua

lib/dis_arm.lua

lib/dis_ppc.lua

lib/dis_x64.lua

lib/dis_x86.lua

lib/dump.lua

lib/v.lua

src/buildvm.c

src/buildvm.h

src/buildvm_arm.dasc

src/buildvm_arm.h

src/buildvm_asm.c

src/buildvm_fold.c

src/buildvm_lib.c

src/buildvm_peobj.c

src/buildvm_ppc.dasc

src/buildvm_ppc.h

src/buildvm_ppcspe.dasc

src/buildvm_ppcspe.h

src/buildvm_x64.h

src/buildvm_x64win.h

src/buildvm_x86.dasc

src/buildvm_x86.h

files modified:
.pc/applied-patches

Makefile

README

debian/changelog

debian/control

debian/patches/series

debian/rules

dynasm/dasm_arm.h

dynasm/dasm_arm.lua

dynasm/dasm_ppc.h

dynasm/dasm_ppc.lua

dynasm/dasm_proto.h

dynasm/dasm_x64.lua

dynasm/dasm_x86.h

dynasm/dasm_x86.lua

dynasm/dynasm.lua

etc/luajit.1

etc/luajit.pc

src/Makefile

src/Makefile.dep

src/lauxlib.h

src/lib_aux.c

src/lib_base.c

src/lib_bit.c

src/lib_debug.c

src/lib_ffi.c

src/lib_io.c

src/lib_jit.c

src/lib_math.c

src/lib_os.c

src/lib_package.c

src/lib_string.c

src/lib_table.c

src/lj.supp

src/lj_alloc.c

src/lj_api.c

src/lj_arch.h

src/lj_asm.c

src/lj_asm.h

src/lj_asm_arm.h

src/lj_asm_ppc.h

src/lj_asm_x86.h

src/lj_bc.c

src/lj_bc.h

src/lj_bcdump.h

src/lj_bcread.c

src/lj_bcwrite.c

src/lj_carith.c

src/lj_carith.h

src/lj_ccall.c

src/lj_ccall.h

src/lj_ccallback.c

src/lj_ccallback.h

src/lj_cconv.c

src/lj_cconv.h

src/lj_cdata.c

src/lj_cdata.h

src/lj_char.h

src/lj_clib.c

src/lj_clib.h

src/lj_cparse.c

src/lj_cparse.h

src/lj_crecord.c

src/lj_crecord.h

src/lj_ctype.c

src/lj_ctype.h

src/lj_debug.c

src/lj_debug.h

src/lj_def.h

src/lj_dispatch.c

src/lj_dispatch.h

src/lj_emit_arm.h

src/lj_emit_ppc.h

src/lj_emit_x86.h

src/lj_err.c

src/lj_err.h

src/lj_errmsg.h

src/lj_ff.h

src/lj_ffrecord.c

src/lj_ffrecord.h

src/lj_frame.h

src/lj_func.c

src/lj_func.h

src/lj_gc.c

src/lj_gc.h

src/lj_gdbjit.c

src/lj_gdbjit.h

src/lj_ir.c

src/lj_ir.h

src/lj_ircall.h

src/lj_iropt.h

src/lj_jit.h

src/lj_lex.c

src/lj_lex.h

src/lj_lib.c

src/lj_lib.h

src/lj_mcode.c

src/lj_mcode.h

src/lj_meta.c

src/lj_meta.h

src/lj_obj.c

src/lj_obj.h

src/lj_opt_dce.c

src/lj_opt_fold.c

src/lj_opt_loop.c

src/lj_opt_mem.c

src/lj_opt_narrow.c

src/lj_opt_split.c

src/lj_parse.c

src/lj_parse.h

src/lj_record.c

src/lj_record.h

src/lj_snap.c

src/lj_snap.h

src/lj_state.c

src/lj_state.h

src/lj_str.c

src/lj_str.h

src/lj_tab.c

src/lj_tab.h

src/lj_target.h

src/lj_target_arm.h

src/lj_target_ppc.h

src/lj_target_x86.h

src/lj_trace.c

src/lj_trace.h

src/lj_traceerr.h

src/lj_udata.c

src/lj_udata.h

src/lj_vm.h

src/lj_vmevent.c

src/lj_vmevent.h

src/lj_vmmath.c

src/ljamalg.c

src/lua.h

src/luaconf.h

src/luajit.c

src/luajit.h

src/lualib.h

src/msvcbuild.bat

Show diffs side-by-side

added added

removed removed

src/lj_opt_narrow.c

** NARROW: Narrowing of numbers to integers (double to int32_t).

** STRIPOV: Stripping of overflow checks.

#define lj_opt_narrow_c

#if LJ_HASJIT

#include "lj_str.h"

#include "lj_bc.h"

#include "lj_ir.h"

#include "lj_jit.h"

#include "lj_iropt.h"

#include "lj_trace.h"

#include "lj_vm.h"

#include "lj_strscan.h"

/* Rationale for narrowing optimizations:

519

{

520

if (tref_isstr(rb)) {

521

rb = emitir(IRTG(IR_STRTO, IRT_NUM), rb, 0);

522

lj_str_tonum(strV(vb), vb);

522

lj_strscan_num(strV(vb), vb);

523

}

524

if (tref_isstr(rc)) {

525

rc = emitir(IRTG(IR_STRTO, IRT_NUM), rc, 0);

526

lj_str_tonum(strV(vc), vc);

526

lj_strscan_num(strV(vc), vc);

527

}

528

/* Must not narrow MUL in non-DUALNUM variant, because it loses -0. */

529

if ((op >= IR_ADD && op <= (LJ_DUALNUM ? IR_MUL : IR_SUB)) &&

541

{

542

if (tref_isstr(rc)) {

543

rc = emitir(IRTG(IR_STRTO, IRT_NUM), rc, 0);

544

lj_str_tonum(strV(vc), vc);

544

lj_strscan_num(strV(vc), vc);

545

}

546

if (tref_isinteger(rc)) {

547

if ((uint32_t)numberVint(vc) != 0x80000000u)

555

TRef lj_opt_narrow_mod(jit_State *J, TRef rb, TRef rc, TValue *vc)

556

{

557

TRef tmp;

558

if (tvisstr(vc) && !lj_str_tonum(strV(vc), vc))

558

if (tvisstr(vc) && !lj_strscan_num(strV(vc), vc))

559

lj_trace_err(J, LJ_TRERR_BADTYPE);

560

if ((LJ_DUALNUM || (J->flags & JIT_F_OPT_NARROW)) &&

561

tref_isinteger(rb) && tref_isinteger(rc) &&

575

/* Narrowing of power operator or math.pow. */

576

TRef lj_opt_narrow_pow(jit_State *J, TRef rb, TRef rc, TValue *vc)

577

{

578

if (tvisstr(vc) && !lj_str_tonum(strV(vc), vc))

578

if (tvisstr(vc) && !lj_strscan_num(strV(vc), vc))

579

lj_trace_err(J, LJ_TRERR_BADTYPE);

580

/* Narrowing must be unconditional to preserve (-x)^i semantics. */

581

if (tvisint(vc) || numisint(numV(vc))) {

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