author Steve Snyder <swsnyder@snydernet.net>
Thu, 01 Oct 2009 14:19:41 -0400
changeset 33346 8a43f01f1d6478ad072c1f4a41fb633f8a5e3a32
parent 23964 ba15a84af7e6c364570feb7b5a66cea87ba460c8
permissions -rw-r--r--
Bug 512865. qcms: Improve SSE2 performance, add SSE support. r=jrmuizel This patch greatly improves the performance of QCMS transformations on x86 & x86_64 systems. Some notes: 0. On 32-bit x86 systems it does runtime selection between non-SIMD, SSE, and SSE2 code paths. 1. On x86_64 systems the SSE2 code path is always taken. The non-SIMD and SSE code paths are left intact, but contemporary versions of the GCC and MSVC compilers will see that they cannot be reached and optimize them away. 2. The execution of the SSE2 code path is reduced by 67%, relative to the original Intel/Microsoft formatted ASM code. The relative performance is seen on a Pentium4 (Northwood) 2.4GHz CPU with DDR1 RAM. 3. The SSE code path provides a 80% reduction in execution time, relative to the non-SIMD code path. The relative performance is seen on a Pentium3 (Coppermine) 1.26GHz CPU with SDRAM. 4. The code has been split out into separate files so that it can be built with different cflags (-msse, and -msse2) when using gcc. 5. Try to land again, this time with __attribute__((__force_align_arg_pointer__)) to avoid crashes on linux.

// Unicode support by Jim Park -- 08/23/2007
// Jim Park: Should probably turn this into a nice class for C++ programs.

#pragma once
#include <windows.h>
#include <tchar.h>
// only include this file from one place in your DLL.
// (it is all static, if you use it in two places it will fail)

#define EXDLL_INIT()           {  \
        g_stringsize=string_size; \
        g_stacktop=stacktop;      \
        g_variables=variables; }

// For page showing plug-ins

/* Jim Park: This char is compared as an int value and therefore
   it's fine as an ASCII.  Do not need to change to wchar_t since
   it will get the same integer value. */
#define NOTIFY_BYE_BYE _T('x')

typedef struct _stack_t {
  struct _stack_t *next;
  TCHAR text[1]; // this should be the length of string_size
} stack_t;

static unsigned int g_stringsize;
static stack_t **g_stacktop;
static TCHAR *g_variables;

INST_0,         // $0
INST_1,         // $1
INST_2,         // $2
INST_3,         // $3
INST_4,         // $4
INST_5,         // $5
INST_6,         // $6
INST_7,         // $7
INST_8,         // $8
INST_9,         // $9
INST_R0,        // $R0
INST_R1,        // $R1
INST_R2,        // $R2
INST_R3,        // $R3
INST_R4,        // $R4
INST_R5,        // $R5
INST_R6,        // $R6
INST_R7,        // $R7
INST_R8,        // $R8
INST_R9,        // $R9

typedef struct {
  int autoclose;
  int all_user_var;
  int exec_error;
  int abort;
  int exec_reboot;
  int reboot_called;
  int XXX_cur_insttype; // deprecated
  int XXX_insttype_changed; // deprecated
  int silent;
  int instdir_error;
  int rtl;
  int errlvl;
  int alter_reg_view;
} exec_flags_type;

typedef struct {
  exec_flags_type *exec_flags;
  int (__stdcall *ExecuteCodeSegment)(int, HWND);
  void (__stdcall *validate_filename)(TCHAR *);
} extra_parameters;

static int    __stdcall popstring(TCHAR *str); // 0 on success, 1 on empty stack
static void   __stdcall pushstring(const TCHAR *str);
static char * __stdcall getuservariable(const int varnum);
static void   __stdcall setuservariable(const int varnum, const TCHAR *var);

#ifdef _UNICODE
#define PopStringW(x) popstring(x)
#define PushStringW(x) pushstring(x)
#define SetUserVariableW(x,y) setuservariable(x,y)

static int  __stdcall PopStringA(char* ansiStr);
static void __stdcall PushStringA(const char* ansiStr);
static void __stdcall GetUserVariableW(const int varnum, wchar_t* wideStr);
static void __stdcall GetUserVariableA(const int varnum, char* ansiStr);
static void __stdcall SetUserVariableA(const int varnum, const char* ansiStr);

// ANSI defs

#define PopStringA(x) popstring(x)
#define PushStringA(x) pushstring(x)
#define SetUserVariableA(x,y) setuservariable(x,y)

static int  __stdcall PopStringW(wchar_t* wideStr);
static void __stdcall PushStringW(wchar_t* wideStr);
static void __stdcall GetUserVariableW(const int varnum, wchar_t* wideStr);
static void __stdcall GetUserVariableA(const int varnum, char* ansiStr);
static void __stdcall SetUserVariableW(const int varnum, const wchar_t* wideStr);


static BOOL __stdcall IsUnicode(void)
static TCHAR* __stdcall AllocString();