3 files changed, 0 insertions, 22 deletions

diff --git a/apps/codecs/lib/asm_mcf5249.h b/apps/codecs/lib/asm_mcf5249.h
index 88b7961431..8378accb2a 100644
--- a/apps/codecs/lib/asm_mcf5249.h
+++ b/apps/codecs/lib/asm_mcf5249.h
@@ -27,8 +27,6 @@
 #ifndef _V_WIDE_MATH
 #define _V_WIDE_MATH
 
-#define MB()
-
 static inline int32_t MULT32(int32_t x, int32_t y) {
 
   asm volatile ("mac.l %[x], %[y], %%acc0;"    /* multiply & shift  */
diff --git a/apps/codecs/lib/codeclib_misc.h b/apps/codecs/lib/codeclib_misc.h
index f522d33544..54bebb744f 100644
--- a/apps/codecs/lib/codeclib_misc.h
+++ b/apps/codecs/lib/codeclib_misc.h
@@ -105,13 +105,6 @@ static inline int32_t MULT31_SHIFT15(int32_t x, int32_t y) {
 #endif
 
 /*
- * This should be used as a memory barrier, forcing all cached values in
- * registers to wr writen back to memory.  Might or might not be beneficial
- * depending on the architecture and compiler.
- */
-#define MB()
-
-/*
  * The XPROD functions are meant to optimize the cross products found all
  * over the place in mdct.c by forcing memory operation ordering to avoid
  * unnecessary register reloads as soon as memory is being written to.
diff --git a/apps/codecs/lib/mdct2.c b/apps/codecs/lib/mdct2.c
index 6d9168804c..3accc51e57 100644
--- a/apps/codecs/lib/mdct2.c
+++ b/apps/codecs/lib/mdct2.c
@@ -74,7 +74,6 @@ static inline void mdct_butterfly_8(int32_t *x){
            x[5] = r6   - r2;
            x[6] = r4   + r0;
            x[7] = r6   + r2;
-           MB();
 }
 
 /* 16 point butterfly (in place, 4 register) */
@@ -86,23 +85,19 @@ static inline void mdct_butterfly_16(int32_t *x){
            r1 = x[ 1] - x[ 9]; x[ 9] += x[ 1];
            x[ 0] = MULT31((r0 + r1) , cPI2_8);
            x[ 1] = MULT31((r1 - r0) , cPI2_8);
-           MB();
 
            r0 = x[10] - x[ 2]; x[10] += x[ 2];
            r1 = x[ 3] - x[11]; x[11] += x[ 3];
            x[ 2] = r1; x[ 3] = r0;
-           MB();
 
            r0 = x[12] - x[ 4]; x[12] += x[ 4];
            r1 = x[13] - x[ 5]; x[13] += x[ 5];
            x[ 4] = MULT31((r0 - r1) , cPI2_8);
            x[ 5] = MULT31((r0 + r1) , cPI2_8);
-           MB();
 
            r0 = x[14] - x[ 6]; x[14] += x[ 6];
            r1 = x[15] - x[ 7]; x[15] += x[ 7];
            x[ 6] = r0; x[ 7] = r1;
-           MB();
 
            mdct_butterfly_8(x);
            mdct_butterfly_8(x+8);
@@ -116,44 +111,36 @@ static inline  void mdct_butterfly_32(int32_t *x){
            r0 = x[30] - x[14]; x[30] += x[14];
            r1 = x[31] - x[15]; x[31] += x[15];
            x[14] = r0; x[15] = r1;
-           MB();
 
            r0 = x[28] - x[12]; x[28] += x[12];
            r1 = x[29] - x[13]; x[29] += x[13];
            XNPROD31( r0, r1, cPI1_8, cPI3_8, &x[12], &x[13] );
-           MB();
 
            r0 = x[26] - x[10]; x[26] += x[10];
            r1 = x[27] - x[11]; x[27] += x[11];
            x[10] = MULT31((r0 - r1) , cPI2_8);
            x[11] = MULT31((r0 + r1) , cPI2_8);
-           MB();
 
            r0 = x[24] - x[ 8]; x[24] += x[ 8];
            r1 = x[25] - x[ 9]; x[25] += x[ 9];
            XNPROD31( r0, r1, cPI3_8, cPI1_8, &x[ 8], &x[ 9] );
-           MB();
 
            r0 = x[22] - x[ 6]; x[22] += x[ 6];
            r1 = x[ 7] - x[23]; x[23] += x[ 7];
            x[ 6] = r1; x[ 7] = r0;
-           MB();
 
            r0 = x[ 4] - x[20]; x[20] += x[ 4];
            r1 = x[ 5] - x[21]; x[21] += x[ 5];
            XPROD31 ( r0, r1, cPI3_8, cPI1_8, &x[ 4], &x[ 5] );
-           MB();
 
            r0 = x[ 2] - x[18]; x[18] += x[ 2];
            r1 = x[ 3] - x[19]; x[19] += x[ 3];
            x[ 2] = MULT31((r1 + r0) , cPI2_8);
            x[ 3] = MULT31((r1 - r0) , cPI2_8);
-           MB();
 
            r0 = x[ 0] - x[16]; x[16] += x[ 0];
            r1 = x[ 1] - x[17]; x[17] += x[ 1];
            XPROD31 ( r0, r1, cPI1_8, cPI3_8, &x[ 0], &x[ 1] );
-           MB();
 
            mdct_butterfly_16(x);
            mdct_butterfly_16(x+16);