From 11eef57867ad3aa712e7615568f1c9e0a98f375a Mon Sep 17 00:00:00 2001 From: Eric Botcazou Date: Wed, 16 Nov 2005 07:23:40 +0000 Subject: [PATCH] alpha.c (alpha_expand_prologue): Fix off-by-one bug in the stack probing loop. * config/alpha/alpha.c (alpha_expand_prologue): Fix off-by-one bug in the stack probing loop. From-SVN: r107069 --- gcc/ChangeLog | 5 +++++ gcc/config/alpha/alpha.c | 7 +++---- 2 files changed, 8 insertions(+), 4 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 9e5cf17c683..21765a2e8a8 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2005-11-16 Eric Botcazou + + * config/alpha/alpha.c (alpha_expand_prologue): Fix off-by-one bug + in the stack probing loop. + 2005-11-15 David Edelsohn * configure.ac: Use .machine power5 not power5x. diff --git a/gcc/config/alpha/alpha.c b/gcc/config/alpha/alpha.c index ec53778ce18..a14b5d31e64 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))); }