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alpha.c (alpha_expand_prologue): Fix off-by-one bug in the stack probing loop.

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* config/alpha/alpha.c (alpha_expand_prologue): Fix off-by-one bug
	in the stack probing loop.

From-SVN: r107069
This commit is contained in:
Eric Botcazou 2005-11-16 07:23:40 +00:00 • committed by Eric Botcazou
parent 1e04bfdc8a
commit 11eef57867
2 changed files with 8 additions and 4 deletions
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5
gcc/ChangeLog
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@ -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.

7
gcc/config/alpha/alpha.c
View file

@ -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)));
}