diff -r 4a897e9b397574b1a04cd73d832ca1fb8e13735a -r d3bce9735b5d265633d4f99337589bb5ded5e261 src/Sieving.cc
--- a/src/Sieving.cc	Wed Apr 17 22:40:24 2013 -0500
+++ b/src/Sieving.cc	Wed Apr 17 22:44:13 2013 -0500
@@ -386,7 +386,7 @@
        "js 2f \n\t" \
        "decl %[pos] \n\t" \
        "2: # hit detected" \
-       : [pos] "=r" (offset) : "[pos]" (offset), [sieb] "q" (SieveArray) : "cc");
+       : [pos] "=q" (offset) : "[pos]" (offset), [sieb] "q" (SieveArray) : "cc");
 #endif
 #if defined(ASM_X86_64)
 // code containing cmov optimizations for X86_64
@@ -560,7 +560,7 @@
        "js 2f \n\t" \
        "decl %[pos] \n\t" \
        "2: # hit detected" \
-       : [pos] "=r" (offset) : "[pos]" (offset), [sieb] "q" (SieveArray) : "cc");
+       : [pos] "=q" (offset) : "[pos]" (offset), [sieb] "q" (SieveArray) : "cc");
 #define asm_sieb(lp, d0, d1, P) \
   asm volatile ( \
        "cmpl %[disp1],%[disp0]\n\t" \
@@ -593,7 +593,7 @@
        "testl $0x80008000,(%[sieb],%[pos],4) \n\t" \
        "jz 1b \n\t" \
        "2: # hit detected" \
-       : [pos] "=r" (offset) : "[pos]" (offset), [sieb] "q" (SieveArray) : "cc");
+       : [pos] "=q" (offset) : "[pos]" (offset), [sieb] "q" (SieveArray) : "cc");
 #define asm_sieb(lp, d0, d1, P) \
   asm volatile ( \
        "cmpl %[disp1],%[disp0]\n\t" \
@@ -1554,7 +1554,7 @@
        "pcmpeqd 16(%[Deltas],%[i],8),%%xmm1 \n\t" \
        "packssdw %%xmm1,%%xmm0 \n\t" \
        "pmovmskb %%xmm0,%[pflags] # create bytemask" \
-       : [pflags] "=r" (pflags)
+       : [pflags] "=q" (pflags)
        : [divisors] "r" (&PrimeNumbers[0]), [Deltas] "r" (&Delta_of_PrimeNumbers[0][0]),
          [FloatRecips] "r" (&PrimeNumberFloatReciprocals[0]),
          [_xmm7] "x" (XMM7), [_xmm6] "x" (XMM6), [i] "r" (nr)
@@ -1605,7 +1605,7 @@
        "pcmpeqd %%xmm3,%%xmm1 \n\t" \
        "packssdw %%xmm1,%%xmm0 \n\t" \
        "pmovmskb %%xmm0,%[pflags] # create bytemask" \
-       : [pflags] "=r" (pflags)
+       : [pflags] "=q" (pflags)
        : [PrimeNumbers] "r" (&PrimeNumbers[0]), [LocDeltas] "r" (&LocalPhysInterval_Delta_of_PrimeNumbers[0][0]),
          [_xmm7] "x" (XMM7), [i] "r" (nr)
        : "xmm0", "xmm1", "xmm2", "xmm3");
@@ -1706,7 +1706,7 @@
        "pcmpeqd 16+%[Deltas](,%[i],8),%%xmm1 \n\t" \
        "packssdw %%xmm1,%%xmm0 \n\t" \
        "pmovmskb %%xmm0,%[pflags] # create bytemask" \
-       : [pflags] "=r" (pflags)
+       : [pflags] "=q" (pflags)
        : [divisors] "o" (PrimeNumbers[0]), [Deltas] "o" (Delta_of_PrimeNumbers[0][0]),
          [FloatRecips] "o" (PrimeNumberFloatReciprocals[0]),
          [_xmm7] "x" (XMM7), [_xmm6] "x" (XMM6), [i] "r" (nr)
@@ -1757,7 +1757,7 @@
        "pcmpeqd %%xmm3,%%xmm1 \n\t" \
        "packssdw %%xmm1,%%xmm0 \n\t" \
        "pmovmskb %%xmm0,%[pflags] # create bytemask" \
-       : [pflags] "=r" (pflags)
+       : [pflags] "=q" (pflags)
        : [PrimeNumbers] "o" (PrimeNumbers[0]), [LocDeltas] "o" (LocalPhysInterval_Delta_of_PrimeNumbers[0][0]),
          [_xmm7] "x" (XMM7), [i] "r" (nr)
        : "xmm0", "xmm1", "xmm2", "xmm3");
@@ -1876,7 +1876,7 @@
        "pcmpeqd 24+%[Deltas](,%[i],8),%%mm2 # L2AM \n\t" \
        "packssdw %%mm2,%%mm1       # L2AM  pack comparison results together \n\t" \
        "pmovmskb %%mm1,%[pflags2]  # L6+ (VectorPath)  into bytemask" \
-       : [pflags] "=r" (pflags), [pflags2] "=r" (pflags2)
+       : [pflags] "=q" (pflags), [pflags2] "=q" (pflags2)
        : [divisors] "o" (PrimeNumbers[0]), [Deltas] "o" (Delta_of_PrimeNumbers[0][0]),
          [FloatRecips] "o" (PrimeNumberFloatReciprocals[0]),
          [_xmm7] "x" (XMM7), [_xmm6] "x" (XMM6), [i] "r" (nr)
@@ -1946,7 +1946,7 @@
        "pcmpeqd 8+%[LocDeltas](,%[i],8),%%mm2 # L2AM \n\t" \
        "packssdw %%mm2,%%mm1       # L2AM  pack comparison results together \n\t" \
        "pmovmskb %%mm1,%[pflags]   # L6+ (VectorPath)  into bytemask" \
-       : [pflags] "=r" (pflags)
+       : [pflags] "=q" (pflags)
        : [PrimeNumbers] "o" (PrimeNumbers[0]), [LocDeltas] "o" (LocalPhysInterval_Delta_of_PrimeNumbers[0][0]),
          [_mm7] "y" (MM7), [i] "r" (nr)
        : "mm0", "mm1", "mm2");
@@ -2038,7 +2038,7 @@
        "pcmpeqd 8+%[Deltas](,%[i],8),%%mm2 # L2AM \n\t" \
        "packssdw %%mm2,%%mm1       # L2AM  pack comparison results together \n\t" \
        "pmovmskb %%mm1,%[pflags]   # L6+ (VectorPath)  into bytemask" \
-       : [pflags] "=r" (pflags)
+       : [pflags] "=q" (pflags)
        : [divisors] "o" (PrimeNumbers[0]), [FloatRecips] "o" (PrimeNumberFloatReciprocals[0]),
          [Deltas] "o" (Delta_of_PrimeNumbers[0][0]),
          [_mm7] "y" (MM7), [_mm6] "y" (MM6), [i] "r" (nr)
@@ -2086,7 +2086,7 @@
        "pcmpeqd 8+%[LocDeltas](,%[i],8),%%mm2 # L2AM \n\t" \
        "packssdw %%mm2,%%mm1       # L2AM  pack comparison results together \n\t" \
        "pmovmskb %%mm1,%[pflags]   # L6+ (VectorPath)  into bytemask" \
-       : [pflags] "=r" (pflags)
+       : [pflags] "=q" (pflags)
        : [PrimeNumbers] "o" (PrimeNumbers[0]), [LocDeltas] "o" (LocalPhysInterval_Delta_of_PrimeNumbers[0][0]),
          [_mm7] "y" (MM7), [i] "r" (nr)
        : "mm0", "mm1", "mm2");
@@ -2179,7 +2179,7 @@
        "packssdw %%mm1,%%mm5 \n\t" \
        "packsswb %%mm0,%%mm5 # mm0 is not relevant\n\t" \
        "movd %%mm5,%[pflags]   # L5+ (VectorPath)" \
-       : [pflags] "=r" (pflags)
+       : [pflags] "=q" (pflags)
        : [divisors] "o" (PrimeNumbers[0]), [FloatRecips] "o" (PrimeNumberFloatReciprocals[0]),
          [Deltas] "o" (Delta_of_PrimeNumbers[0][0]),
          [_mm7] "y" (MM7), [_mm6] "y" (MM6), [i] "r" (nr)
@@ -2229,7 +2229,7 @@
        "packssdw %%mm1,%%mm0 \n\t" \
        "packsswb %%mm1,%%mm0 \n\t" \
        "movd %%mm0,%[pflags]   # L5+ (VectorPath)" \
-       : [pflags] "=r" (pflags)
+       : [pflags] "=q" (pflags)
        : [PrimeNumbers] "o" (PrimeNumbers[0]), [LocDeltas] "o" (LocalPhysInterval_Delta_of_PrimeNumbers[0][0]),
          [_mm7] "y" (MM7), [i] "r" (nr)
        : "mm0", "mm1");