diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 12bb6597acf..fe6a6002cb2 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,10 @@
+2012-01-02  Richard Sandiford  <rdsandiford@googlemail.com>
+
+	PR target/51729
+	* gcc.target/mips/dspr2-MULT.c: Remove -ffixed-hi -ffixed-lo.
+	XFAIL.
+	* gcc.target/mips/dspr2-MULTU.c: Likewise.
+
 2012-01-02  Richard Sandiford  <rdsandiford@googlemail.com>
 
 	* gcc.dg/pr46309.c: Add -mtune=octeon2 for MIPS.
diff --git a/gcc/testsuite/gcc.target/mips/dspr2-MULT.c b/gcc/testsuite/gcc.target/mips/dspr2-MULT.c
index 8b815e5acb6..c685974895d 100644
--- a/gcc/testsuite/gcc.target/mips/dspr2-MULT.c
+++ b/gcc/testsuite/gcc.target/mips/dspr2-MULT.c
@@ -1,11 +1,12 @@
 /* Test MIPS32 DSP REV 2 MULT instruction.  Tune for a CPU that has
    pipelined mult.  */
 /* { dg-do compile } */
-/* { dg-options "-mgp32 -mdspr2 -O2 -ffixed-hi -ffixed-lo -mtune=74kc" } */
+/* { dg-options "-mgp32 -mdspr2 -O2 -mtune=74kc" } */
 
+/* See PR target/51729 for the reason behind the XFAILs.  */
 /* { dg-final { scan-assembler "\tmult\t" } } */
-/* { dg-final { scan-assembler "ac1" } } */
-/* { dg-final { scan-assembler "ac2" } } */
+/* { dg-final { scan-assembler "ac1" { xfail *-*-* } } } */
+/* { dg-final { scan-assembler "ac2" { xfail *-*-* } } } */
 
 typedef long long a64;
 
diff --git a/gcc/testsuite/gcc.target/mips/dspr2-MULTU.c b/gcc/testsuite/gcc.target/mips/dspr2-MULTU.c
index c457d245a31..7f04315efe5 100644
--- a/gcc/testsuite/gcc.target/mips/dspr2-MULTU.c
+++ b/gcc/testsuite/gcc.target/mips/dspr2-MULTU.c
@@ -1,11 +1,12 @@
 /* Test MIPS32 DSP REV 2 MULTU instruction.  Tune for a CPU that has
    pipelined multu.  */
 /* { dg-do compile } */
-/* { dg-options "-mgp32 -mdspr2 -O2 -ffixed-hi -ffixed-lo -mtune=74kc" } */
+/* { dg-options "-mgp32 -mdspr2 -O2 -mtune=74kc" } */
 
+/* See PR target/51729 for the reason behind the XFAILs.  */
 /* { dg-final { scan-assembler "\tmultu\t" } } */
-/* { dg-final { scan-assembler "ac1" } } */
-/* { dg-final { scan-assembler "ac2" } } */
+/* { dg-final { scan-assembler "ac1" { xfail *-*-* } } } */
+/* { dg-final { scan-assembler "ac2" { xfail *-*-* } } } */
 
 typedef unsigned long long a64;