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| author | Richard Biener <rguenther@suse.de> | 2024-09-24 14:23:40 +0200 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2024-09-24 15:21:11 +0200 |
| commit | 2114243c23ec5168cd54633cd4995ab123d92573 (patch) | |
| tree | 4202530aac4650f08aa8b4cbab3a430699e58431 | |
| parent | de6fe690db32689ba5e5c6f551672a19e6cae5d4 (diff) | |
| download | gcc-2114243c23ec5168cd54633cd4995ab123d92573.zip gcc-2114243c23ec5168cd54633cd4995ab123d92573.tar.gz gcc-2114243c23ec5168cd54633cd4995ab123d92573.tar.bz2 | |
Simplify range-op shift mask generation
The following reduces the number of wide_ints built which show up
in the profile for PR114855 as the largest remaining bit at -O1.
* range-op.cc (operator_rshift::op1_range): Use wi::mask instead
of shift and not.
| -rw-r--r-- | gcc/range-op.cc | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/gcc/range-op.cc b/gcc/range-op.cc index c576f68..3f5cf08 100644 --- a/gcc/range-op.cc +++ b/gcc/range-op.cc @@ -2863,7 +2863,7 @@ operator_rshift::op1_range (irange &r, // OP1 is anything from 0011 1000 to 0011 1111. That is, a // range from LHS<<3 plus a mask of the 3 bits we shifted on the // right hand side (0x07). - wide_int mask = wi::bit_not (wi::lshift (wi::minus_one (prec), shift)); + wide_int mask = wi::mask (shift.to_uhwi (), false, prec); int_range_max mask_range (type, wi::zero (TYPE_PRECISION (type)), mask); |