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| author | Richard Henderson <rth@redhat.com> | 2005-04-18 09:02:14 -0700 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2005-04-18 09:02:14 -0700 |
| commit | e2939e7513e27a811715008c997a90b92b7fee5d (patch) | |
| tree | 3d3344b42fb2435ba6ab5a5878ce553c432ba85d /gcc/builtins.c | |
| parent | a45f6936f4a308ec4ac7b20d6a061a67cfe54f73 (diff) | |
| download | gcc-e2939e7513e27a811715008c997a90b92b7fee5d.zip gcc-e2939e7513e27a811715008c997a90b92b7fee5d.tar.gz gcc-e2939e7513e27a811715008c997a90b92b7fee5d.tar.bz2 | |
builtins.c (expand_builtin_sync_operation): Fold nand to and for constants.
* builtins.c (expand_builtin_sync_operation): Fold nand to and
for constants.
From-SVN: r98324
Diffstat (limited to 'gcc/builtins.c')
| -rw-r--r-- | gcc/builtins.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/gcc/builtins.c b/gcc/builtins.c index 33102e0..e907752 100644 --- a/gcc/builtins.c +++ b/gcc/builtins.c @@ -5255,13 +5255,20 @@ expand_builtin_sync_operation (tree arglist, enum rtx_code code, bool after, { enum machine_mode mode; rtx addr, val, mem; + tree valt; /* Expand the operands. */ addr = expand_expr (TREE_VALUE (arglist), NULL, Pmode, EXPAND_SUM); mode = TYPE_MODE (TREE_TYPE (TREE_TYPE (TREE_VALUE (arglist)))); arglist = TREE_CHAIN (arglist); - val = expand_expr (TREE_VALUE (arglist), NULL, mode, EXPAND_NORMAL); + valt = TREE_VALUE (arglist); + if (code == NOT && TREE_CONSTANT (valt)) + { + valt = fold_build1 (BIT_NOT_EXPR, TREE_TYPE (valt), valt); + code = AND; + } + val = expand_expr (valt, NULL, mode, EXPAND_NORMAL); /* Note that we explicitly do not want any alias information for this memory, so that we kill all other live memories. Otherwise we don't |