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gcc does optimize writes to non volatile variables away if it didnt know that they were read in between

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Originally committed as revision 2751 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc
pull/126/head
Michael Niedermayer 24 years ago
parent da3b92c877
commit 3fe8e8f068
4 changed files with 12 additions and 12 deletions
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  1. 4
      postproc/postprocess.c
  2. 4
      postproc/postprocess_template.c
  3. 8
      postproc/swscale.c
  4. 8
      postproc/swscale_template.c

4
postproc/postprocess.c
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@ -116,8 +116,8 @@ Notes:
#define OPTIONS_ARRAY_SIZE 10
#ifdef HAVE_MMX
static uint64_t __attribute__((aligned(8))) packedYOffset= 0x0000000000000000LL;
static uint64_t __attribute__((aligned(8))) packedYScale= 0x0100010001000100LL;
static volatile uint64_t __attribute__((aligned(8))) packedYOffset= 0x0000000000000000LL;
static volatile uint64_t __attribute__((aligned(8))) packedYScale= 0x0100010001000100LL;
static uint64_t __attribute__((aligned(8))) w05= 0x0005000500050005LL;
static uint64_t __attribute__((aligned(8))) w20= 0x0020002000200020LL;
static uint64_t __attribute__((aligned(8))) w1400= 0x1400140014001400LL;

4
postproc/postprocess_template.c
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@ -116,8 +116,8 @@ Notes:
#define OPTIONS_ARRAY_SIZE 10
#ifdef HAVE_MMX
static uint64_t __attribute__((aligned(8))) packedYOffset= 0x0000000000000000LL;
static uint64_t __attribute__((aligned(8))) packedYScale= 0x0100010001000100LL;
static volatile uint64_t __attribute__((aligned(8))) packedYOffset= 0x0000000000000000LL;
static volatile uint64_t __attribute__((aligned(8))) packedYScale= 0x0100010001000100LL;
static uint64_t __attribute__((aligned(8))) w05= 0x0005000500050005LL;
static uint64_t __attribute__((aligned(8))) w20= 0x0020002000200020LL;
static uint64_t __attribute__((aligned(8))) w1400= 0x1400140014001400LL;

8
postproc/swscale.c
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@ -71,10 +71,10 @@ static uint64_t __attribute__((aligned(8))) bm00001111=0x00000000FFFFFFFFLL;
static uint64_t __attribute__((aligned(8))) bm00000111=0x0000000000FFFFFFLL;
static uint64_t __attribute__((aligned(8))) bm11111000=0xFFFFFFFFFF000000LL;
static uint64_t __attribute__((aligned(8))) b5Dither;
static uint64_t __attribute__((aligned(8))) g5Dither;
static uint64_t __attribute__((aligned(8))) g6Dither;
static uint64_t __attribute__((aligned(8))) r5Dither;
static volatile uint64_t __attribute__((aligned(8))) b5Dither;
static volatile uint64_t __attribute__((aligned(8))) g5Dither;
static volatile uint64_t __attribute__((aligned(8))) g6Dither;
static volatile uint64_t __attribute__((aligned(8))) r5Dither;
static uint64_t __attribute__((aligned(8))) dither4[2]={
0x0103010301030103LL,

8
postproc/swscale_template.c
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@ -71,10 +71,10 @@ static uint64_t __attribute__((aligned(8))) bm00001111=0x00000000FFFFFFFFLL;
static uint64_t __attribute__((aligned(8))) bm00000111=0x0000000000FFFFFFLL;
static uint64_t __attribute__((aligned(8))) bm11111000=0xFFFFFFFFFF000000LL;
static uint64_t __attribute__((aligned(8))) b5Dither;
static uint64_t __attribute__((aligned(8))) g5Dither;
static uint64_t __attribute__((aligned(8))) g6Dither;
static uint64_t __attribute__((aligned(8))) r5Dither;
static volatile uint64_t __attribute__((aligned(8))) b5Dither;
static volatile uint64_t __attribute__((aligned(8))) g5Dither;
static volatile uint64_t __attribute__((aligned(8))) g6Dither;
static volatile uint64_t __attribute__((aligned(8))) r5Dither;
static uint64_t __attribute__((aligned(8))) dither4[2]={
0x0103010301030103LL,

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