Very cool! I need to read it more carefully. But I see you are
lowering zext to a single insert_subreg. Is that right? It won't zero
out the top part, no?
Evan
Sent from my iPhone
On Jul 28, 2007, at 12:17 AM, Christopher Lamb <[EMAIL PROTECTED]
> wrote:
This patch changes the X86 back end to use the new subreg operations
for appropriate truncate and extend operations. This should allow
regression testing of the subreg feature going forward, as it's now
used in a public target.
The patch passed DejaGnu and all of SingleSource on my x86 machine,
but there are changes for x86-64 as well which I haven't been able
to test. Output assembly for x86-64 appears sane, but I'd appreciate
someone giving the patch a try on their x86-64 system. Other 32-bit
x86 testing is also appreciated.
Thanks
--
Christopher Lamb
<x86_subregs.patch>
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