2007-04-24 Andreas Krebbel <krebbel1@de.ibm.com>
+ PR target/31641
+ * config/s390/s390.c (s390_expand_setmem): Don't ICE for constant length
+ argument of 0 for memset.
+ (s390_expand_movmem, s390_expand_setmem, s390_expand_cmpmem): Use
+ unsigned shift instead of the signed variant.
+
+2007-04-24 Andreas Krebbel <krebbel1@de.ibm.com>
+
* config/s390/s390.md ("*cmp<mode>_ccs_0_ibm", "*cmp<mode>_ccs_ibm",
"fix_trunc<BFP:mode><GPR:mode>2_ieee", "fix_truncdfsi2_ibm",
"floatsidf2_ibm", "floatsisf2", "truncdfsf2_ieee", "truncdfsf2_ibm",
if (temp != count)
emit_move_insn (count, temp);
- temp = expand_binop (mode, ashr_optab, count, GEN_INT (8), blocks, 1, 0);
+ temp = expand_binop (mode, lshr_optab, count, GEN_INT (8), blocks, 1, 0);
if (temp != blocks)
emit_move_insn (blocks, temp);
void
s390_expand_setmem (rtx dst, rtx len, rtx val)
{
- gcc_assert (GET_CODE (len) != CONST_INT || INTVAL (len) > 0);
+ if (GET_CODE (len) == CONST_INT && INTVAL (len) == 0)
+ return;
+
gcc_assert (GET_CODE (val) == CONST_INT || GET_MODE (val) == QImode);
- if (GET_CODE (len) == CONST_INT && INTVAL (len) <= 257)
+ if (GET_CODE (len) == CONST_INT && INTVAL (len) > 0 && INTVAL (len) <= 257)
{
if (val == const0_rtx && INTVAL (len) <= 256)
emit_insn (gen_clrmem_short (dst, GEN_INT (INTVAL (len) - 1)));
if (temp != count)
emit_move_insn (count, temp);
- temp = expand_binop (mode, ashr_optab, count, GEN_INT (8), blocks, 1, 0);
+ temp = expand_binop (mode, lshr_optab, count, GEN_INT (8), blocks, 1, 0);
if (temp != blocks)
emit_move_insn (blocks, temp);
if (temp != count)
emit_move_insn (count, temp);
- temp = expand_binop (mode, ashr_optab, count, GEN_INT (8), blocks, 1, 0);
+ temp = expand_binop (mode, lshr_optab, count, GEN_INT (8), blocks, 1, 0);
if (temp != blocks)
emit_move_insn (blocks, temp);