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| author | Jakub Jelinek <jakub@redhat.com> | 2000-11-14 19:05:45 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2000-11-14 19:05:45 +0100 |
| commit | f36d6244de2d705437102b9e3ebf34589c92edea (patch) | |
| tree | 867e197b40ffd6f31ee2be7c55a538afdb3c234c /gcc | |
| parent | 3401c26b5cce41f75a511d1ee60ccadb876c5fb3 (diff) | |
| download | gcc-f36d6244de2d705437102b9e3ebf34589c92edea.zip gcc-f36d6244de2d705437102b9e3ebf34589c92edea.tar.gz gcc-f36d6244de2d705437102b9e3ebf34589c92edea.tar.bz2 | |
builtins.c (expand_builtin_setjmp): Set current_function_calls_setjmp.
* builtins.c (expand_builtin_setjmp): Set
current_function_calls_setjmp.
(expand_builtin_longjmp): Set current_function_calls_longjmp.
* config/sparc/sparc.md (builtin_setjmp_setup): New expand.
(do_builtin_setjmp_setup): New insn.
From-SVN: r37461
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 9 | ||||
| -rw-r--r-- | gcc/builtins.c | 3 | ||||
| -rw-r--r-- | gcc/config/sparc/sparc.md | 27 |
3 files changed, 39 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 613a7b2..570dbe5 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,12 @@ +2000-11-14 Jakub Jelinek <jakub@redhat.com> + + * builtins.c (expand_builtin_setjmp): Set + current_function_calls_setjmp. + (expand_builtin_longjmp): Set current_function_calls_longjmp. + + * config/sparc/sparc.md (builtin_setjmp_setup): New expand. + (do_builtin_setjmp_setup): New insn. + Tue Nov 14 12:34:56 2000 Richard Kenner <kenner@vlsi1.ultra.nyu.edu> * tree.c (get_unwidened): Use host_integerp and tree_low_cst. diff --git a/gcc/builtins.c b/gcc/builtins.c index 68677b5..8daf963 100644 --- a/gcc/builtins.c +++ b/gcc/builtins.c @@ -446,6 +446,7 @@ expand_builtin_setjmp (buf_addr, target, first_label, next_label) calls may traverse the arc back to this label. */ current_function_has_nonlocal_label = 1; + current_function_calls_setjmp = 1; nonlocal_goto_handler_labels = gen_rtx_EXPR_LIST (VOIDmode, lab1, nonlocal_goto_handler_labels); @@ -547,6 +548,8 @@ expand_builtin_longjmp (buf_addr, value) if (value != const1_rtx) abort (); + current_function_calls_longjmp = 1; + #ifdef HAVE_builtin_longjmp if (HAVE_builtin_longjmp) emit_insn (gen_builtin_longjmp (buf_addr)); diff --git a/gcc/config/sparc/sparc.md b/gcc/config/sparc/sparc.md index 93734f9..861a9f3 100644 --- a/gcc/config/sparc/sparc.md +++ b/gcc/config/sparc/sparc.md @@ -50,6 +50,7 @@ ;; 2 goto_handler_and_restore ;; 3 goto_handler_and_restore_v9* ;; 4 flush +;; 5 do_builtin_setjmp_setup ;; ;; The upper 32 fp regs on the v9 can't hold SFmode values. To deal with this @@ -9014,6 +9015,32 @@ ;; [(set_attr "type" "misc") ;; (set_attr "length" "2,3")]) +;; For __builtin_setjmp we need to flush register windows iff the function +;; calls alloca as well, because otherwise the register window might be +;; saved after %sp adjustement and thus setjmp would crash +(define_expand "builtin_setjmp_setup" + [(match_operand 0 "register_operand" "r")] + "" + " +{ + emit_insn (gen_do_builtin_setjmp_setup ()); + DONE; +}") + +(define_insn "do_builtin_setjmp_setup" + [(unspec_volatile [(const_int 0)] 5)] + "" + "* +{ + if (!current_function_calls_alloca) + return \"\"; + if (TARGET_V9) + return \"flushw\"; + return \"ta\\t3\"; +}" + [(set_attr "type" "misc") + (set_attr "length" "1")]) + ;; Pattern for use after a setjmp to store FP and the return register ;; into the stack area. |