MIPS/GCC/test: Implement `-mcode-readable=yes' option test

	gcc/testsuite/
	* gcc.target/mips/mips.exp (mips_option_tests): Add
	`-mcode-readable=yes' array element.

From-SVN: r242423

gcc/testsuite/ChangeLog

 2016-11-15  Maciej W. Rozycki  <macro@imgtec.com>
 
 	* gcc.target/mips/mips.exp (mips_option_tests): Add
+	`-mcode-readable=yes' array element.
+
+2016-11-15  Maciej W. Rozycki  <macro@imgtec.com>
+
+	* gcc.target/mips/mips.exp (mips_option_tests): Add
 	`-mmicromips' array element.
 
 2016-11-15  Michael Matz  <matz@suse.de>

gcc/testsuite/gcc.target/mips/mips.exp

@@ -401,6 +401,27 @@ set mips_option_tests(-mdspr2) {
     .set dspr2
     prepend $2,$3,11
 }
+set mips_option_tests(-mcode-readable=yes) {
+    move $2,$31
+    bal 1f
+    .set mips16
+    la $3,0f
+    lw $3,($3)
+    jr $31
+0:
+    .word 0xfacebead
+    .set nomips16
+    .align 2
+1:
+    ori $3,$31,1
+    jalr $3
+    li $4,0xfacebead
+    beq $3,$4,2f
+    break
+    b .
+2:
+    move $31,$2
+}
 
 # Canonicalize command-line option OPTION.
 proc mips_canonicalize_option { option } {