Compile IAMCU tests with -fno-pie -no-pie

Since IAMCU tests clear all scratch integer registers with:

  asm __volatile__ ("xor %%eax, %%eax\n\t" \
                    "xor %%edx, %%edx\n\t" \
                    "xor %%ecx, %%ecx\n\t" \
                    ::: "eax", "edx", "ecx");

PIC register may be trashed between setting PIC register and using it.
This patch compiles AMCU tests with -fno-pie -no-pie.

	PR target/67110
	* gcc.target/i386/iamcu/abi-iamcu.exp (additional_flags): Add
	-fno-pie -no-pie.

From-SVN: r226570

gcc/testsuite/ChangeLog

+2015-08-04  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR target/67110
+	* gcc.target/i386/iamcu/abi-iamcu.exp (additional_flags): Add
+	-fno-pie -no-pie.
+
 2015-08-04  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	PR c++/66427

gcc/testsuite/gcc.target/i386/iamcu/abi-iamcu.exp

@@ -29,7 +29,7 @@ if { (![istarget x86_64-*-linux*] && ![istarget i?86-*-linux*])
 
 torture-init
 set-torture-options $C_TORTURE_OPTIONS
-set additional_flags "-miamcu -W -Wall -Wno-abi"
+set additional_flags "-miamcu -W -Wall -Wno-abi -fno-pie -no-pie"
 
 foreach src [lsort [glob -nocomplain $srcdir/$subdir/test_*.c]] {
     if {[runtest_file_p $runtests $src]} {