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Re: [tree-ssa]: Reduce size of phi nodes by 31 bits

From: Devang Patel <dpatel at apple dot com>
To: Richard Henderson <rth at redhat dot com>
Cc: Daniel Berlin <dberlin at dberlin dot org>, GCC Patches <gcc-patches at gcc dot gnu dot org>, Diego Novillo <dnovillo at redhat dot com>
Date: Tue, 30 Dec 2003 14:54:05 -0800
Subject: Re: [tree-ssa]: Reduce size of phi nodes by 31 bits
References: <CA51D1BD-3A5C-11D8-8825-000A95DA505C@dberlin.org> <20031230222747.GC21806@redhat.com>

On Dec 30, 2003, at 2:27 PM, Richard Henderson wrote:

On Mon, Dec 29, 2003 at 07:12:01PM -0500, Daniel Berlin wrote:
-  int rewritten;
+  unsigned int rewritten:1;
struct phi_arg_d GTY ((length ("((tree)&%h)->phi.capacity"))) a[1];
You will note that this doesn't reduce the size of anything.
Just exchanges data for padding.

Do you think we can steal couple of bits from num_args ?

--
Devang

Follow-Ups:
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References:
- [tree-ssa]: Reduce size of phi nodes by 31 bits
  - From: Daniel Berlin
- Re: [tree-ssa]: Reduce size of phi nodes by 31 bits
  - From: Richard Henderson

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