target/3850: gcc 2.73-3.0 code generation on HP and SUN WRONG

[daniel at innologic-systems dot com]

>Number:         3850
>Category:       target
>Synopsis:       gcc 2.73-3.0  code generation on HP and SUN WRONG
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    unassigned
>State:          open
>Class:          wrong-code
>Submitter-Id:   net
>Arrival-Date:   Fri Jul 27 14:36:01 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     Daniel Sittig
>Release:        unknown-1.0
>Organization:
>Environment:
On HP: HPUX 10.20, PA85000	
ON SUN: Solaris 2.6, UII 
>Description:
The code generation for example printf function call
is wrong: ( it is not printf specific ! )

int a;
printf("a=%d a=%d", (a=1,a), (a=2,a));

The expected output shall be : a=1 a=2

But this works only on a x86 , both UII and HP PA fails.
I was dissassembling it and found that ALL Gcc we have 
create ONE memory reference for variable 'a'. 
I was doublechecking with HP 'cc' and it created correctly
2 memory references thus displaying the expected result.
Linux is applying a 'pushd' before loading '2' to %eax.
This also works and the example above works correctly.

>How-To-Repeat:
gcc mini.c -g
gdb a.out
disassemble
>Fix:
No fix known. 
>Release-Note:
>Audit-Trail:
>Unformatted:
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