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| author | Jakub Jelinek <jakub@redhat.com> | 2023-09-20 09:45:42 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@redhat.com> | 2023-09-20 09:45:42 +0200 |
| commit | 47ecac52bd4cae84dc786731c655c3bfe1ade377 (patch) | |
| tree | e33dcd0f3f031e22d7568742b9e9727fd64153c3 /gcc/expr.cc | |
| parent | 264ff8182580c57f77c6bc60381cfb2c3842b46c (diff) | |
| download | gcc-47ecac52bd4cae84dc786731c655c3bfe1ade377.zip gcc-47ecac52bd4cae84dc786731c655c3bfe1ade377.tar.gz gcc-47ecac52bd4cae84dc786731c655c3bfe1ade377.tar.bz2 | |
middle-end: use MAX_FIXED_MODE_SIZE instead of precidion of TImode/DImode
On Tue, Sep 19, 2023 at 05:50:59PM +0100, Richard Sandiford wrote:
> How about using MAX_FIXED_MODE_SIZE for things like this?
Seems like a good idea.
The following patch does that.
2023-09-20 Jakub Jelinek <jakub@redhat.com>
* match.pd ((x << c) >> c): Use MAX_FIXED_MODE_SIZE instead of
GET_MODE_PRECISION of TImode or DImode depending on whether
TImode is supported scalar mode.
* gimple-lower-bitint.cc (bitint_precision_kind): Likewise.
* expr.cc (expand_expr_real_1): Likewise.
* tree-ssa-sccvn.cc (eliminate_dom_walker::eliminate_stmt): Likewise.
* ubsan.cc (ubsan_encode_value, ubsan_type_descriptor): Likewise.
Diffstat (limited to 'gcc/expr.cc')
| -rw-r--r-- | gcc/expr.cc | 14 |
1 files changed, 4 insertions, 10 deletions
diff --git a/gcc/expr.cc b/gcc/expr.cc index d5b6494..308ddc0 100644 --- a/gcc/expr.cc +++ b/gcc/expr.cc @@ -11044,17 +11044,11 @@ expand_expr_real_1 (tree exp, rtx target, machine_mode tmode, scalar_int_mode limb_mode = as_a <scalar_int_mode> (info.limb_mode); unsigned int limb_prec = GET_MODE_PRECISION (limb_mode); - if (prec > limb_prec) + if (prec > limb_prec && prec > MAX_FIXED_MODE_SIZE) { - scalar_int_mode arith_mode - = (targetm.scalar_mode_supported_p (TImode) - ? TImode : DImode); - if (prec > GET_MODE_PRECISION (arith_mode)) - { - /* Emit large/huge _BitInt INTEGER_CSTs into memory. */ - exp = tree_output_constant_def (exp); - return expand_expr (exp, target, VOIDmode, modifier); - } + /* Emit large/huge _BitInt INTEGER_CSTs into memory. */ + exp = tree_output_constant_def (exp); + return expand_expr (exp, target, VOIDmode, modifier); } } |