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| author | Richard Stallman <rms@gnu.org> | 1993-02-24 06:43:37 +0000 |
|---|---|---|
| committer | Richard Stallman <rms@gnu.org> | 1993-02-24 06:43:37 +0000 |
| commit | 13af526d4f317b9a8ac4cb1d3d66a6c160da6ca7 (patch) | |
| tree | 0575a6ad99ddeb3882b85e89c9b0d6ebd0437430 /gcc/fold-const.c | |
| parent | 44735512c91eed6880c4de2c01f903c48f6f3013 (diff) | |
| download | gcc-13af526d4f317b9a8ac4cb1d3d66a6c160da6ca7.zip gcc-13af526d4f317b9a8ac4cb1d3d66a6c160da6ca7.tar.gz gcc-13af526d4f317b9a8ac4cb1d3d66a6c160da6ca7.tar.bz2 | |
(all_ones_mask_p): Really use tmask.
(all_ones_mask_p): Declare tmask to be `tree'.
(optimize_bit_field_compare) Add missing semicolon.
(decode_field_reference): Use force_fit_type
instead of convert to avoid truncated integer warning.
(all_ones_mask_p): Likewise.
From-SVN: r3519
Diffstat (limited to 'gcc/fold-const.c')
| -rw-r--r-- | gcc/fold-const.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/gcc/fold-const.c b/gcc/fold-const.c index 4708f88..e659a36 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -2294,7 +2294,10 @@ optimize_bit_field_compare (code, compare_type, lhs, rhs) #endif /* Make the mask to be used against the extracted field. */ - mask = convert (unsigned_type, build_int_2 (~0, ~0)); + mask = build_int_2 (~0, ~0); + TREE_TYPE (mask) = unsigned_type; + force_fit_type (mask); + mask = convert (unsigned_type, mask); mask = const_binop (LSHIFT_EXPR, mask, size_int (lnbitsize - lbitsize), 0); mask = const_binop (RSHIFT_EXPR, mask, size_int (lnbitsize - lbitsize - lbitpos), 0); @@ -2451,13 +2454,15 @@ all_ones_mask_p (mask, size) { tree type = TREE_TYPE (mask); int precision = TYPE_PRECISION (type); + tree tmask; + tmask = build_int_2 (~0, ~0); + TREE_TYPE (tmask) = signed_type (type); + force_fit_type (tmask); return operand_equal_p (mask, const_binop (RSHIFT_EXPR, - const_binop (LSHIFT_EXPR, - convert (signed_type (type), - build_int_2 (~0, ~0)), + const_binop (LSHIFT_EXPR, tmask, size_int (precision - size), 0), size_int (precision - size), 0), 0); |