diff options
Diffstat (limited to 'gcc/expmed.c')
| -rw-r--r-- | gcc/expmed.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/gcc/expmed.c b/gcc/expmed.c index 317dcc4ab54..37622f5ddd0 100644 --- a/gcc/expmed.c +++ b/gcc/expmed.c @@ -54,7 +54,7 @@ static rtx extract_split_bit_field PARAMS ((rtx, unsigned HOST_WIDE_INT, static void do_cmp_and_jump PARAMS ((rtx, rtx, enum rtx_code, enum machine_mode, rtx)); -/* Non-zero means divides or modulus operations are relatively cheap for +/* Nonzero means divides or modulus operations are relatively cheap for powers of two, so don't use branches; emit the operation instead. Usually, this will mean that the MD file will emit non-branch sequences. */ @@ -4170,7 +4170,7 @@ make_tree (type, x) MODE is the machine mode for the computation. X and MULT must have mode MODE. ADD may have a different mode. So can X (defaults to same as MODE). - UNSIGNEDP is non-zero to do unsigned multiplication. */ + UNSIGNEDP is nonzero to do unsigned multiplication. */ bool const_mult_add_overflow_p (x, mult, add, mode, unsignedp) @@ -4208,7 +4208,7 @@ const_mult_add_overflow_p (x, mult, add, mode, unsignedp) MODE is the machine mode for the computation. X and MULT must have mode MODE. ADD may have a different mode. So can X (defaults to same as MODE). - UNSIGNEDP is non-zero to do unsigned multiplication. + UNSIGNEDP is nonzero to do unsigned multiplication. This may emit insns. */ rtx @@ -4622,7 +4622,7 @@ emit_store_flag (target, code, op0, op1, mode, unsignedp, normalizep) if (code == EQ || code == NE) { /* For EQ or NE, one way to do the comparison is to apply an operation - that converts the operand into a positive number if it is non-zero + that converts the operand into a positive number if it is nonzero or zero if it was originally zero. Then, for EQ, we subtract 1 and for NE we negate. This puts the result in the sign bit. Then we normalize with a shift, if needed. |