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| author | Bernd Schmidt <bernds@redhat.com> | 2001-02-07 10:24:22 +0000 |
|---|---|---|
| committer | Bernd Schmidt <bernds@gcc.gnu.org> | 2001-02-07 10:24:22 +0000 |
| commit | bcd7edfe5ee015bf0975d934a7a9924041be7b0f (patch) | |
| tree | b23d5df0e9bf6fbfdad54bc32f946648fd2b7011 /gcc | |
| parent | b3eda2ff9c86c4199ce423e3ee35188471f5f8a6 (diff) | |
| download | gcc-bcd7edfe5ee015bf0975d934a7a9924041be7b0f.zip gcc-bcd7edfe5ee015bf0975d934a7a9924041be7b0f.tar.gz gcc-bcd7edfe5ee015bf0975d934a7a9924041be7b0f.tar.bz2 | |
Avoid scheduling builtin setjmp receivers
From-SVN: r39515
Diffstat (limited to 'gcc')
| -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 |