diff --git a/index.d b/index.d
index 81d8832b964..b7c4d714a3f 100644
--- a/index.d
+++ b/index.d
@@ -160,9 +160,6 @@ D language compiler. Also, check out the
 	<dt><a href="std_gc.html"><b>std.gc</b></a>
 	<dd>Control the garbage collector.
 
-	<dt><a href="std_intrinsic.html"><b>std.intrinsic</b></a>
-	<dd>Compiler built in intrinsic functions
-
 	<dt><a href="std_math.html"><b>std.math</b></a>
 	<dd>Include all the usual math functions like sin, cos, atan, etc.
 
diff --git a/posix.mak b/posix.mak
index f227c812788..b0d716b1997 100644
--- a/posix.mak
+++ b/posix.mak
@@ -156,7 +156,7 @@ STD_MODULES = $(addprefix std/, algorithm array base64 bigint bitmanip	\
         compiler complex concurrency container contracts conv cpuid		\
         cstream ctype date datetime datebase dateparse demangle			\
         encoding exception file format functional getopt gregorian		\
-        intrinsic json loader math mathspecial md5 metastrings mmfile	\
+        json loader math mathspecial md5 metastrings mmfile	\
         numeric outbuffer path perf process random range regex regexp	\
         signals socket socketstream stdint stdio stdiobase stream		\
         string syserror system traits typecons typetuple uni uri utf	\
diff --git a/std.ddoc b/std.ddoc
index 2a71fcbb2d3..6c18030c9ce 100644
--- a/std.ddoc
+++ b/std.ddoc
@@ -177,7 +177,6 @@ NAVIGATION_PHOBOS=
 	$(LI <a href="std_gc.html" title="Control the garbage collector">std.gc</a>)
 	$(LI <a href="std_getopt.html" title="Command line options">std.getopt</a>)
 	$(LI <a href="std_gregorian.html" title="Gregorian Calendar">std.gregorian</a>)
-	$(LI <a href="std_intrinsic.html" title="Compiler built in intrinsic functions">std.intrinsic</a>)
 	$(LI <a href="std_json.html" title="JSON reader">std.json</a>)
 	$(LI <a href="std_math.html" title="the usual math functions">std.math</a>)
 	$(LI <a href="std_mathspecial.html" title="mathematical special functions">std.mathspecial</a>)
diff --git a/std/array.d b/std/array.d
index 758d33f7b35..d5773bf6a75 100644
--- a/std/array.d
+++ b/std/array.d
@@ -12,9 +12,9 @@ Source: $(PHOBOSSRC std/_array.d)
 */
 module std.array;
 
-import core.memory;
+import core.memory, core.bitop;
 import std.algorithm, std.conv, std.ctype, std.encoding, std.exception,
-    std.intrinsic, std.range, std.string, std.traits, std.typecons, std.utf;
+    std.range, std.string, std.traits, std.typecons, std.utf;
 import std.c.string : memcpy;
 version(unittest) import std.stdio, std.typetuple;
 
diff --git a/std/bitmanip.d b/std/bitmanip.d
index efb6204560c..bd90b7530bb 100644
--- a/std/bitmanip.d
+++ b/std/bitmanip.d
@@ -23,7 +23,7 @@ module std.bitmanip;
 
 //debug = bitarray;                // uncomment to turn on debugging printf's
 
-private import std.intrinsic;
+import core.bitop;
 
 string myToStringx(ulong n)
 {   enum s = "0123456789";
diff --git a/std/c/windows/winsock.d b/std/c/windows/winsock.d
index 391c320d259..d5577d1395c 100644
--- a/std/c/windows/winsock.d
+++ b/std/c/windows/winsock.d
@@ -316,7 +316,7 @@ version(BigEndian)
 }
 else version(LittleEndian)
 {
-        private import std.intrinsic;
+        private import core.bitop;
 
 
         uint16_t htons(uint16_t x)
diff --git a/std/intrinsic.d b/std/intrinsic.d
index e5b91877b8a..97f61b72918 100644
--- a/std/intrinsic.d
+++ b/std/intrinsic.d
@@ -3,7 +3,11 @@
 // www.digitalmars.com
 // Placed into the public domain
 
-/** These functions are built-in intrinsics to the compiler.
+/**
+ * $(RED This module has been deprecated. Use $(LINK2 core_bitop.html,
+ * core.bitop) instead.)
+ *
+ * These functions are built-in intrinsics to the compiler.
  *
         Intrinsic functions are functions built in to the compiler,
         usually to take advantage of specific CPU features that
@@ -23,160 +27,9 @@
 
 module std.intrinsic;
 
-nothrow:
-
-/**
- * Scans the bits in v starting with bit 0, looking
- * for the first set bit.
- * Returns:
- *      The bit number of the first bit set.
- *      The return value is undefined if v is zero.
- */
-pure int bsf(size_t v);
-
-/**
- * Scans the bits in v from the most significant bit
- * to the least significant bit, looking
- * for the first set bit.
- * Returns:
- *      The bit number of the first bit set.
- *      The return value is undefined if v is zero.
- * Example:
- * ---
- * import std.stdio;
- * import std.intrinsic;
- *
- * int main()
- * {
- *     uint v;
- *     int x;
- *
- *     v = 0x21;
- *     x = bsf(v);
- *     writefln("bsf(x%x) = %d", v, x);
- *     x = bsr(v);
- *     writefln("bsr(x%x) = %d", v, x);
- *     return 0;
- * }
- * ---
- * Output:
- *  bsf(x21) = 0<br>
- *  bsr(x21) = 5
- */
-pure int bsr(size_t v);
-
-/**
- * Tests the bit.
- */
-pure int bt(in size_t* p, size_t bitnum);
-
-/**
- * Tests and complements the bit.
- */
-int btc(size_t* p, size_t bitnum);
-
-/**
- * Tests and resets (sets to 0) the bit.
- */
-int btr(size_t* p, size_t bitnum);
-
-/**
- * Tests and sets the bit.
- * Params:
- * p = a non-NULL pointer to an array of size_ts.
- * index = a bit number, starting with bit 0 of p[0],
- * and progressing. It addresses bits like the expression:
----
-p[index / (size_t.sizeof*8)] & (1 << (index & ((size_t.sizeof*8) - 1)))
----
- * Returns:
- *      A non-zero value if the bit was set, and a zero
- *      if it was clear.
- *
- * Example:
- * ---
-import std.stdio;
-import std.intrinsic;
-
-int main()
-{
-    size_t array[2];
-
-    array[0] = 2;
-    array[1] = 0x100;
-
-    writefln("btc(array, 35) = %d", <b>btc</b>(array, 35));
-    writefln("array = [0]:x%x, [1]:x%x", array[0], array[1]);
-
-    writefln("btc(array, 35) = %d", <b>btc</b>(array, 35));
-    writefln("array = [0]:x%x, [1]:x%x", array[0], array[1]);
-
-    writefln("bts(array, 35) = %d", <b>bts</b>(array, 35));
-    writefln("array = [0]:x%x, [1]:x%x", array[0], array[1]);
+deprecated:
 
-    writefln("btr(array, 35) = %d", <b>btr</b>(array, 35));
-    writefln("array = [0]:x%x, [1]:x%x", array[0], array[1]);
-
-    writefln("bt(array, 1) = %d", <b>bt</b>(array, 1));
-    writefln("array = [0]:x%x, [1]:x%x", array[0], array[1]);
-
-    return 0;
-}
- * ---
- * Output:
-<pre>
-btc(array, 35) = 0
-array = [0]:x2, [1]:x108
-btc(array, 35) = -1
-array = [0]:x2, [1]:x100
-bts(array, 35) = 0
-array = [0]:x2, [1]:x108
-btr(array, 35) = -1
-array = [0]:x2, [1]:x100
-bt(array, 1) = -1
-array = [0]:x2, [1]:x100
-</pre>
- */
-int bts(size_t* p, size_t bitnum);
-
-
-/**
- * Swaps bytes in a 4 byte uint end-to-end, i.e. byte 0 becomes
- * byte 3, byte 1 becomes byte 2, byte 2 becomes byte 1, byte 3
- * becomes byte 0.
- */
-pure uint bswap(uint v);
-
-
-/**
- * Reads I/O port at port_address.
- */
-ubyte inp(uint port_address);
-
-/**
- * ditto
- */
-ushort inpw(uint port_address);
-
-/**
- * ditto
- */
-uint inpl(uint port_address);
-
-
-/**
- * Writes and returns value to I/O port at port_address.
- */
-ubyte outp(uint port_address, ubyte value);
-
-/**
- * ditto
- */
-ushort outpw(uint port_address, ushort value);
-
-/**
- * ditto
- */
-uint outpl(uint port_address, uint value);
+pragma(msg, "std.intrinsic has been moved. Please import core.bitop instead.");
 
+public import core.bitop;
 
diff --git a/std/numeric.d b/std/numeric.d
index cf75a39b163..8f3584b139e 100644
--- a/std/numeric.d
+++ b/std/numeric.d
@@ -37,9 +37,9 @@ import std.range;
 import std.c.stdlib;
 import std.functional;
 import std.typetuple;
-import std.intrinsic;
 import std.complex;
 
+import core.bitop;
 import core.memory;
 import core.exception;
 
@@ -95,8 +95,8 @@ public enum CustomFloatFlags {
     none = 0
 }
 
-// 64-bit version of std.intrinsic.bsr
-private int bsr(ulong value) {
+// 64-bit version of core.bitop.bsr
+private int bsr64(ulong value) {
     union Ulong {
         ulong raw;
         struct {
@@ -106,7 +106,7 @@ private int bsr(ulong value) {
     }
     Ulong v;
     v.raw = value;
-    return v.high==0 ? std.intrinsic.bsr(v.low) : std.intrinsic.bsr(v.high) + 32;
+    return v.high==0 ? core.bitop.bsr(v.low) : core.bitop.bsr(v.high) + 32;
 }
 
 /**
@@ -237,7 +237,7 @@ struct CustomFloat(
                // Convert denormalized form to normalized form
                 ((flags&Flags.allowDenorm)&&(exp==0)) ){
                 if(sig > 0) {
-                    auto shift2 = precision - bsr(sig);
+                    auto shift2 = precision - bsr64(sig);
                     exp  -= shift2-1;
                     shift += shift2;
                 } else {                                // value = 0.0
@@ -2624,8 +2624,6 @@ void slowFourier4(Ret, R)(R range, Ret buf) {
 }
 
 bool isPowerOfTwo(size_t num) {
-    // BUGS:  std.intrinsic takes a uint, not a size_t.  Therefore, this
-    //        won't work on 64-bit unless std.intrinsic is fixed.
     return bsr(num) == bsf(num);
 }
 
diff --git a/std/range.d b/std/range.d
index 84dfe66b59c..3e5c28dafb6 100644
--- a/std/range.d
+++ b/std/range.d
@@ -18,7 +18,8 @@ Source:    $(PHOBOSSRC std/_range.d)
 module std.range;
 
 public import std.array;
-import std.algorithm, std.conv, std.exception,  std.functional, std.intrinsic,
+import core.bitop;
+import std.algorithm, std.conv, std.exception,  std.functional,
     std.random, std.traits, std.typecons, std.typetuple;
 
 // For testing only.  This code is included in a string literal to be included
diff --git a/std/stream.d b/std/stream.d
index 2bfb544c316..d648fab190a 100644
--- a/std/stream.d
+++ b/std/stream.d
@@ -75,8 +75,8 @@ private {
   import std.conv;
   import std.format;
   import std.system;    // for Endian enumeration
-  import std.intrinsic; // for bswap
   import std.utf;
+  import core.bitop; // for bswap
   import core.vararg;
 }
 
diff --git a/std/zip.d b/std/zip.d
index 071ebc01ece..7972ec8b529 100644
--- a/std/zip.d
+++ b/std/zip.d
@@ -34,7 +34,7 @@ module std.zip;
 
 import std.zlib;
 import std.datetime;
-import std.intrinsic;
+import core.bitop;
 import std.conv;
 
 //debug=print;
diff --git a/unittest.d b/unittest.d
index 780643d9c56..5a448fdbfcf 100644
--- a/unittest.d
+++ b/unittest.d
@@ -28,7 +28,6 @@ public import std.demangle;
 public import std.file;
 public import std.format;
 public import std.getopt;
-public import std.intrinsic;
 public import std.loader;
 public import std.math;
 public import std.mathspecial;
diff --git a/win32.mak b/win32.mak
index 559c8c005c1..e46a3227e1f 100644
--- a/win32.mak
+++ b/win32.mak
@@ -110,7 +110,6 @@ SRCS_1 = std\math.d std\stdio.d std\dateparse.d std\date.d std\datetime.d \
 	std\bitmanip.d std\typecons.d \
 	std\complex.d \
 	std\exception.d \
-	std\intrinsic.d \
 	std\process.d \
 	std\system.d \
 	std\encoding.d
@@ -195,7 +194,6 @@ DOCS=	$(DOC)\object.html \
 	$(DOC)\std_gc.html \
 	$(DOC)\std_getopt.html \
 	$(DOC)\std_gregorian.html \
-	$(DOC)\std_intrinsic.html \
 	$(DOC)\std_json.html \
 	$(DOC)\std_math.html \
 	$(DOC)\std_mathspecial.html \
@@ -731,9 +729,6 @@ $(DOC)\std_getopt.html : $(STDDOC) std\getopt.d
 $(DOC)\std_gregorian.html : $(STDDOC) std\gregorian.d
 	$(DMD) -c -o- $(DFLAGS) -Df$(DOC)\std_gregorian.html $(STDDOC) std\gregorian.d
 
-$(DOC)\std_intrinsic.html : $(STDDOC) std\intrinsic.d
-	$(DMD) -c -o- $(DFLAGS) -Df$(DOC)\std_intrinsic.html $(STDDOC) std\intrinsic.d
-
 $(DOC)\std_json.html : $(STDDOC) std\json.d
 	$(DMD) -c -o- $(DFLAGS) -Df$(DOC)\std_json.html $(STDDOC) std\json.d