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| author | bernds <bernds@138bc75d-0d04-0410-961f-82ee72b054a4> | 2001-02-07 10:24:22 +0000 |
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| committer | bernds <bernds@138bc75d-0d04-0410-961f-82ee72b054a4> | 2001-02-07 10:24:22 +0000 |
| commit | 57f6bb944b37240d55becfc2dd79c034e9ef16ae (patch) | |
| tree | b23d5df0e9bf6fbfdad54bc32f946648fd2b7011 | |
| parent | 8461b831308e0491402a9eb8bbc8a5c275570599 (diff) | |
| download | ppe42-gcc-57f6bb944b37240d55becfc2dd79c034e9ef16ae.tar.gz ppe42-gcc-57f6bb944b37240d55becfc2dd79c034e9ef16ae.zip | |
Avoid scheduling builtin setjmp receivers
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@39515 138bc75d-0d04-0410-961f-82ee72b054a4
| -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 09a3a714645..baa60ba6778 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 1a6d87f77d4..3dedc5b336a 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 |
