ubsan: iq2000: left shift of negative value

cpu/
	* iq2000.cpu (f-offset): Avoid left shift of negative values.
opcodes/
	* iq2000-ibld.c: Regenerate.

cpu/ChangeLog

@@ -1,3 +1,7 @@
+2019-12-23  Alan Modra  <amodra@gmail.com>
+
+	* iq2000.cpu (f-offset): Avoid left shift of negative values.
+
 2019-12-20  Alan Modra  <amodra@gmail.com>
 
 	* or1korbis.cpu (f-disp26, f-disp21): Don't left shift negative values.

cpu/iq2000.cpu

@@ -207,7 +207,7 @@
 (df  f-offset "pc offset field"                (PCREL-ADDR) 15 16 INT
      ; Actually, this is relative to the address of the delay slot.
      ((value pc) (sra SI (sub SI value pc) 2))
-     ((value pc) (add SI (sll SI value 2) (add pc 4))))
+     ((value pc) (add SI (mul SI value 4) (add pc 4))))
 
 ; Instruction fields that scarcely appear in instructions.
 

opcodes/ChangeLog

@@ -1,3 +1,7 @@
+2019-12-23  Alan Modra  <amodra@gmail.com>
+
+	* iq2000-ibld.c: Regenerate.
+
 2019-12-23  Alan Modra  <amodra@gmail.com>
 
 	* d30v-dis.c (extract_value): Make num param a uint64_t, constify

opcodes/iq2000-ibld.c

@@ -838,7 +838,7 @@ iq2000_cgen_extract_operand (CGEN_CPU_DESC cd,
       {
         long value;
         length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_PCREL_ADDR), 0, 15, 16, 32, total_length, pc, & value);
-        value = ((((value) << (2))) + (((pc) + (4))));
+        value = ((((value) * (4))) + (((pc) + (4))));
         fields->f_offset = value;
       }
       break;