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| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/builtins.c | 7 |
2 files changed, 12 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 09a3a71..baa60ba 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2001-02-07 Bernd Schmidt <bernds@redhat.com> + + * builtins.c (expand_builtin_setjmp_receiver): Emit an ASM_INPUT as + a scheduling barrier at the end. + 2001-02-07 Alexandre Oliva <aoliva@redhat.com> * config/sh/sh.md (reload_outsf): Removed. diff --git a/gcc/builtins.c b/gcc/builtins.c index 1a6d87f..3dedc5b 100644 --- a/gcc/builtins.c +++ b/gcc/builtins.c @@ -581,6 +581,13 @@ expand_builtin_setjmp_receiver (receiver_label) else #endif { /* Nothing */ } + + /* @@@ This is a kludge. Not all machine descriptions define a blockage + insn, but we must not allow the code we just generated to be reordered + by scheduling. Specifically, the update of the frame pointer must + happen immediately, not later. So emit an ASM_INPUT to act as blockage + insn. */ + emit_insn (gen_rtx_ASM_INPUT (VOIDmode, "")); } /* __builtin_setjmp is passed a pointer to an array of five words (not |