RE: WAW dependency messages

From: Chen, Kenneth W <>
Date: 2003-10-16 11:34:41
> Kernel is a totally different issue. You can send me small asm
> testcases. I will see what I can do.

Something as simple as:

        itc.i r18
        ld8 r19=[r17]

Will generate
aa.S: Assembler messages:
aa.S:3: Warning: Use of 'ld8' violates RAW dependency 'DTC' (data)
aa.S:1: Warning: This is the location of the conflicting usage

Oddly enough, "as test.S" doesn't have warning message, but "as -x
test.S" does.  gcc is execve with "as -x" which triggers the warning

- Ken
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Received on Wed Oct 15 21:35:06 2003

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