I really had a hard time tracking this down from a large program: gcc 4.0.2 on
i386-linux sometimes passes wrong arguments.
Please try the attached source file on i386 with "gcc-4.0.2 -march=i386 -O3
-fomit-frame-pointer".
When looking at the disassembly of f2() it seems that %edi is incorrectly used
twice:
5e: 89 f8 mov %edi,%eax !!!!!
60: ff 74 24 24 pushl 0x24(%esp)
64: 55 push %ebp
65: 89 f9 mov %edi,%ecx !!!!!
67: 89 da mov %ebx,%edx
69: e8 92 ff ff ff call 0 <f1>
This wrong-code bug is probably a 3.2, 3.3 and 3.4 regression.
~Markus
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Summary: i386: wrong arguments passed
Product: gcc
Version: 4.0.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: markus at oberhumer dot com
GCC host triplet: i386-pc-linux
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25196
