diff --git a/gcc/testsuite/gcc.target/i386/pic-1.c b/gcc/testsuite/gcc.target/i386/pic-1.c
index af2424b..9b7da4d 100644
--- a/gcc/testsuite/gcc.target/i386/pic-1.c
+++ b/gcc/testsuite/gcc.target/i386/pic-1.c
@@ -5,11 +5,13 @@
 /* { dg-skip-if "No Windows PIC" { *-*-mingw* *-*-cygwin } { "*" } { "" } } */
 /* { dg-options "-fPIC" } */
 
+/* Test verifies that %ebx is no longer fixed when generating PIC code on i686.  */
+
 int foo ()
 {
   static int a;
 
-  __asm__ __volatile__ (  /* { dg-error "PIC register" } */
+  __asm__ __volatile__ (
     "xorl %%ebx, %%ebx\n"
     "movl %%ebx, %0\n"
     : "=m" (a)
diff --git a/gcc/testsuite/gcc.target/i386/pr23098.c b/gcc/testsuite/gcc.target/i386/pr23098.c
index 66ab0e1..7f118dc 100644
--- a/gcc/testsuite/gcc.target/i386/pr23098.c
+++ b/gcc/testsuite/gcc.target/i386/pr23098.c
@@ -1,7 +1,7 @@
 /* PR rtl-optimization/23098 */
 /* { dg-do compile } */
 /* { dg-options "-O2 -fPIC" } */
-/* { dg-final { scan-assembler-not "\.LC\[0-9\]" { xfail *-*-vxworks* } } } */
+/* { dg-final { scan-assembler-not "\.LC\[0-9\]" { xfail *-*-* } } } */
 /* { dg-require-effective-target ia32 } */
 /* { dg-require-effective-target fpic } */
 
diff --git a/gcc/testsuite/gcc.target/i386/pr47602.c b/gcc/testsuite/gcc.target/i386/pr47602.c
new file mode 100644
index 0000000..fa5f5bd
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr47602.c
@@ -0,0 +1,13 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target ia32 } */
+/* { dg-options "-fPIC" } */
+
+/* Test verifies that %ebx is no longer fixed when generating PIC code on i686.  */
+
+int a, b, c;
+
+void
+foo (void)
+{
+  asm volatile ("movl $0,%%ebx" : : : "ebx");
+}
diff --git a/gcc/testsuite/gcc.target/i386/pr55458.c b/gcc/testsuite/gcc.target/i386/pr55458.c
index 81d85ec..7164ca9 100644
--- a/gcc/testsuite/gcc.target/i386/pr55458.c
+++ b/gcc/testsuite/gcc.target/i386/pr55458.c
@@ -2,10 +2,12 @@
 /* { dg-require-effective-target ia32 } */
 /* { dg-options "-fPIC" } */
 
+/* Test verifies that %ebx is no longer fixed when generating PIC code on i686.  */
+
 int a, b, c;
 
 void
 foo (void)
 {
-  asm volatile ("":"+m" (a), "+m" (b), "+m" (c)); /* { dg-error "operand has impossible constraints" } */
+  asm volatile ("":"+m" (a), "+m" (b), "+m" (c));
 }