diff options
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/config/alpha/alpha.c | 7 |
2 files changed, 8 insertions, 4 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 9e5cf17..21765a2 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2005-11-16 Eric Botcazou <ebotcazou@adacore.com> + + * config/alpha/alpha.c (alpha_expand_prologue): Fix off-by-one bug + in the stack probing loop. + 2005-11-15 David Edelsohn <edelsohn@gnu.org> * configure.ac: Use .machine power5 not power5x. diff --git a/gcc/config/alpha/alpha.c b/gcc/config/alpha/alpha.c index ec53778..a14b5d3 100644 --- a/gcc/config/alpha/alpha.c +++ b/gcc/config/alpha/alpha.c @@ -7546,16 +7546,15 @@ alpha_expand_prologue (void) { if (frame_size > 4096) { - int probed = 4096; + int probed; - do + for (probed = 4096; probed < frame_size; probed += 8192) emit_insn (gen_probe_stack (GEN_INT (TARGET_ABI_UNICOSMK ? -probed + 64 : -probed))); - while ((probed += 8192) < frame_size); /* We only have to do this probe if we aren't saving registers. */ - if (sa_size == 0 && probed + 4096 < frame_size) + if (sa_size == 0 && frame_size > probed - 4096) emit_insn (gen_probe_stack (GEN_INT (-frame_size))); } |