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| author | Hans-Peter Nilsson <hp@bitrange.com> | 2012-11-26 03:22:15 +0000 |
|---|---|---|
| committer | Hans-Peter Nilsson <hp@gcc.gnu.org> | 2012-11-26 03:22:15 +0000 |
| commit | adddc3471f52ea72f9602b0e716f7cdaee8665b7 (patch) | |
| tree | b0f93ca1b6e40dba5a22539f21ca724539f77be1 /gcc/builtins.c | |
| parent | 15c115d38ec01e7f1205f18890ba7597eaef9f80 (diff) | |
| download | gcc-adddc3471f52ea72f9602b0e716f7cdaee8665b7.zip gcc-adddc3471f52ea72f9602b0e716f7cdaee8665b7.tar.gz gcc-adddc3471f52ea72f9602b0e716f7cdaee8665b7.tar.bz2 | |
re PR middle-end/55030 (gcc.c-torture/execute/builtins/memcpy-chk.c execution, -Os (et al))
PR middle-end/55030
* builtins.c (expand_builtin_setjmp_receiver): Update comment
regarding purpose of blockage.
* emit-rtl.c [!HAVE_blockage] (gen_blockage): Similarly for
the head comment.
* rtlanal.c (volatile_insn_p): Ditto.
* doc/md.texi (blockage): Update similarly. Change wording to
require one of two forms, rather than implying a wider choice.
* cse.c (cse_insn): Where checking for blocking insns, use
volatile_insn_p instead of manual check for volatile ASM.
* dse.c (scan_insn): Ditto.
* cselib.c (cselib_process_insn): Ditto.
From-SVN: r193802
Diffstat (limited to 'gcc/builtins.c')
| -rw-r--r-- | gcc/builtins.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/gcc/builtins.c b/gcc/builtins.c index b0cab51..fb7b537 100644 --- a/gcc/builtins.c +++ b/gcc/builtins.c @@ -951,7 +951,8 @@ expand_builtin_setjmp_receiver (rtx receiver_label ATTRIBUTE_UNUSED) /* 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. */ + happen immediately, not later. Similarly, we must block + (frame-related) register values to be used across this code. */ emit_insn (gen_blockage ()); } |