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| author | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2000-04-07 09:24:45 +0000 |
|---|---|---|
| committer | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2000-04-07 09:24:45 +0000 |
| commit | 406034fa4b563e02d1570ec6d1457688c932536d (patch) | |
| tree | a36fbb677db9b9d77dd79d4991fb6f4bd8349ebc /gcc/rtl.def | |
| parent | 40977116f1eefb8672a9403f109f73461963545f (diff) | |
| download | gcc-406034fa4b563e02d1570ec6d1457688c932536d.tar.gz | |
* rtl.def (COND_EXEC): New.
* rtl.h (COND_EXEC_TEST, COND_EXEC_CODE): New.
* tm.texi (MAX_CONDITIONAL_EXECUTE): Document.
* genconfig.c (have_cond_arith_flag): Remove.
(have_cond_exec_flag): New.
(walk_insn_part): Detect COND_EXEC, not arithmetic in IF_THEN_ELSE.
(main): Print HAVE_conditional_execution.
* haifa-sched.c (haifa_classify_insn): Recognize COND_EXEC.
(sched_analyze_insn, print_pattern): Likewise.
* reload.c (find_equiv_reg): Likewise.
* rtlanal.c (reg_referenced_p): Likewise.
(note_stores, dead_or_set_regno_p): Likewise.
(reg_overlap_mentioned_p): Rewrite to use a switch.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@32997 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/rtl.def')
| -rw-r--r-- | gcc/rtl.def | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/rtl.def b/gcc/rtl.def index 570abdc1a97..69c14e0c1b7 100644 --- a/gcc/rtl.def +++ b/gcc/rtl.def @@ -900,6 +900,13 @@ DEF_RTL_EXPR(CALL_PLACEHOLDER, "call_placeholder", "uuuu", 'x') of canonical RTL. It is, however, easier to manipulate this way. */ DEF_RTL_EXPR(PHI, "phi", "E", 'x') +/* Conditionally execute code. + Operand 0 is the condition that if true, the code is executed. + Operand 1 is the code to be executed (typically a SET). + + Semantics are that there are no side effects if the condition + is false. */ +DEF_RTL_EXPR(COND_EXEC, "cond_exec", "ee", 'x') /* Local variables: |