diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 196804b1bd1..4da9ce4c8eb 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2006-05-23  Kazu Hirata  <kazu@codesourcery.com>
+
+	PR target/27696
+	* config/i386/i386.c (ix86_expand_builtin): Use
+	gen_sse3_monitor64 for TARGET_64BIT.
+
 2006-05-22  Kenneth Zadeck <zadeck@naturalbridge.com>
 
 	PR rtl-optimization/26375
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index b004415e79c..ec88a76551e 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -16151,12 +16151,15 @@ ix86_expand_builtin (tree exp, rtx target, rtx subtarget ATTRIBUTE_UNUSED,
       op1 = expand_normal (arg1);
       op2 = expand_normal (arg2);
       if (!REG_P (op0))
-	op0 = copy_to_mode_reg (SImode, op0);
+	op0 = copy_to_mode_reg (Pmode, op0);
       if (!REG_P (op1))
 	op1 = copy_to_mode_reg (SImode, op1);
       if (!REG_P (op2))
 	op2 = copy_to_mode_reg (SImode, op2);
-      emit_insn (gen_sse3_monitor (op0, op1, op2));
+      if (!TARGET_64BIT)
+	emit_insn (gen_sse3_monitor (op0, op1, op2));
+      else
+	emit_insn (gen_sse3_monitor64 (op0, op1, op2));
       return 0;
 
     case IX86_BUILTIN_MWAIT:
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 2d7a552e994..bb4451dda38 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2006-05-23  Kazu Hirata  <kazu@codesourcery.com>
+
+	PR target/27696
+	* gcc.target/i386/pr27696.c: New.
+
 2006-05-22  Janis Johnson  <janis187@us.ibm.com>
 
 	* gcc.dg/vmx/pr27006.c: Remove dg-do directive; use default.
diff --git a/gcc/testsuite/gcc.target/i386/pr27696.c b/gcc/testsuite/gcc.target/i386/pr27696.c
new file mode 100644
index 00000000000..2f281e3f7c2
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr27696.c
@@ -0,0 +1,11 @@
+/* PR target/27696
+   The testcase below uses to trigger an ICE.  */
+
+/* { dg-do compile } */
+/* { dg-options "-msse3" } */
+
+void
+foo (void const * P, unsigned int E, unsigned int H)
+{
+  __builtin_ia32_monitor (P, E, H);
+}