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| author | Bernd Schmidt <bernds@redhat.co.uk> | 2001-01-12 16:33:07 +0000 |
|---|---|---|
| committer | Bernd Schmidt <bernds@gcc.gnu.org> | 2001-01-12 16:33:07 +0000 |
| commit | 9173f5bea61c3fe5fc5bdd68168e459b56142604 (patch) | |
| tree | 70584f14e5fbe28d949fec4c18f8f9553fb8e16e | |
| parent | 227604b93cb2bfb858dcb80a13ace912c27df3b4 (diff) | |
Avoid scheduling set of frame pointer across other insns
From-SVN: r38945
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/expr.c | 7 |
2 files changed, 12 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index a67412aec5a..9c84b0974f8 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2001-01-12 Bernd Schmidt <bernds@redhat.co.uk> + + * expr.c (expand_builtin_setjmp_receiver): Emit a scheduling barrier + as last insn. + 2001-01-11 Bernd Schmidt <bernds@redhat.co.uk> * version.c: Bump. diff --git a/gcc/expr.c b/gcc/expr.c index 3624f77b233..6499e6bc8ff 100644 --- a/gcc/expr.c +++ b/gcc/expr.c @@ -8664,6 +8664,13 @@ expand_builtin_setjmp_receiver (receiver_label) { ; /* 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, "")); } |