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* other/10418: O1 -funit-at-a-time -finstrument-functions makes gcc into an infinite loop
@ 2003-04-15 23:46 pinskia
0 siblings, 0 replies; only message in thread
From: pinskia @ 2003-04-15 23:46 UTC (permalink / raw)
To: gcc-gnats; +Cc: jh
>Number: 10418
>Category: other
>Synopsis: O1 -funit-at-a-time -finstrument-functions makes gcc into an infinite loop
>Confidential: no
>Severity: critical
>Priority: medium
>Responsible: unassigned
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Tue Apr 15 23:46:01 UTC 2003
>Closed-Date:
>Last-Modified:
>Originator: Andrew Pinski
>Release: gcc version 3.4 20030415 (experimental)
>Organization:
>Environment:
powerpc-apple-darwin6.5 and i686-pc-linux-gnu (really does not matter)
>Description:
run `gcc -O1 -funit-at-a-time -finstrument-functions temp.i' it will turn into an infinite loop, in cgraph_optimize in the while loop:
Assembling functions that failed to inline: __toupper __toupper __toupper __toupper __toupper __toupper __toupper __toupper __toupper __toupper __toupper __toupper __toupper (etc.)
Without -finstrument-functions, gcc does not go into an infinite loop aka for some reason __toupper is not being writting out as asm, I think this really a unit-at-a-time bug because without -funit-at-a-time, __toupper does not get assembled.
>How-To-Repeat:
run `gcc -O1 -funit-at-a-time -finstrument-functions temp.i'
>Fix:
Looks like something is going wrong here (?) (on line 458):
for (edge = node->callers; edge; edge = edge->next_caller)
if (TREE_ASM_WRITTEN (edge->caller->decl))
{
changed = true;
cgraph_expand_function (node);
break;
}
>Release-Note:
>Audit-Trail:
>Unformatted:
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2003-04-15 23:46 other/10418: O1 -funit-at-a-time -finstrument-functions makes gcc into an infinite loop pinskia
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