diff options
Diffstat (limited to 'gcc/config/sparc/sparc.c')
| -rw-r--r-- | gcc/config/sparc/sparc.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/gcc/config/sparc/sparc.c b/gcc/config/sparc/sparc.c index 324ec0549cf..931114f5db8 100644 --- a/gcc/config/sparc/sparc.c +++ b/gcc/config/sparc/sparc.c @@ -1357,6 +1357,34 @@ input_operand (op, mode) return 0; } +/* Return 1 if OP is valid for the lhs of a compare insn. */ + +int +compare_operand (op, mode) + rtx op; + enum machine_mode mode; +{ + if (GET_CODE (op) == ZERO_EXTRACT) + return (register_operand (XEXP (op, 0), mode) + && small_int_or_double (XEXP (op, 1), mode) + && small_int_or_double (XEXP (op, 2), mode) + /* This matches cmp_zero_extract. */ + && ((mode == SImode + && ((GET_CODE (XEXP (op, 2)) == CONST_INT + && INTVAL (XEXP (op, 2)) > 19) + || (GET_CODE (XEXP (op, 2)) == CONST_DOUBLE + && CONST_DOUBLE_LOW (XEXP (op, 2)) > 19))) + /* This matches cmp_zero_extract_sp64. */ + || (mode == DImode + && TARGET_ARCH64 + && ((GET_CODE (XEXP (op, 2)) == CONST_INT + && INTVAL (XEXP (op, 2)) > 51) + || (GET_CODE (XEXP (op, 2)) == CONST_DOUBLE + && CONST_DOUBLE_LOW (XEXP (op, 2)) > 51))))); + else + return register_operand (op, mode); +} + /* We know it can't be done in one insn when we get here, the movsi expander guarentees this. */ |