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| author | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 1998-06-30 16:19:11 +0000 |
|---|---|---|
| committer | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 1998-06-30 16:19:11 +0000 |
| commit | 6fa987837c0861b7a44ae427629f5a5920acd3b9 (patch) | |
| tree | 5176e675ace86f9c1b331ce84ab33709cfe7e130 /gcc/rtl.def | |
| parent | e26bf699f36d3cea8c05039404e98280bddc389d (diff) | |
| download | gcc-6fa987837c0861b7a44ae427629f5a5920acd3b9.tar.gz | |
* rtl.def (CONSTANT_P_RTX): New.
* rtl.h (CONSTANT_P): Recognize it.
* cse.c (fold_rtx): Eliminate it.
* expr.c (can_handle_constant_p): New variable.
(init_expr_once): Initialize it.
(expand_builtin): Generate CONSTANT_P_RTX if the expression is not
immediately recognizable as a constant.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@20846 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/rtl.def')
| -rw-r--r-- | gcc/rtl.def | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/gcc/rtl.def b/gcc/rtl.def index a00d3f1d7c5..1e45157b450 100644 --- a/gcc/rtl.def +++ b/gcc/rtl.def @@ -842,6 +842,11 @@ DEF_RTL_EXPR(RANGE_VAR, "range_var", "eti", 'x') 0 is the live bitmap. Operand 1 is the original block number. */ DEF_RTL_EXPR(RANGE_LIVE, "range_live", "bi", 'x') +/* A unary `__builtin_constant_p' expression. These are only emitted + during RTL generation, and then only if optimize > 0. They are + eliminated by the first CSE pass. */ +DEF_RTL_EXPR(CONSTANT_P_RTX, "constant_p", "e", 'x') + /* Local variables: mode:c |