Re: SSA in gcc

"Martin v. =?iso-8859-1?q?L=F6wis?=" <>
25 Sep 2002 23:50:57 -0400

          From comp.compilers

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From: "Martin v. =?iso-8859-1?q?L=F6wis?=" <>
Newsgroups: comp.compilers
Date: 25 Sep 2002 23:50:57 -0400
Organization: Humboldt University Berlin, Department of Computer Science
References: 02-09-135
Keywords: GCC, optimize
Posted-Date: 25 Sep 2002 23:50:57 EDT

"sumesh" <> writes:

> Can any body give me pointers to existence of SSA analysis in GCC.

The gcc 3.2 info file documents the command line options

          Perform optimizations in static single assignment form. Each
          function's flow graph is translated into SSA form, optimizations
          are performed, and the flow graph is translated back from SSA
          form. Users should not specify this option, since it is not yet
          ready for production use.

          Perform Sparse Conditional Constant Propagation in SSA form.
          Requires `-fssa'. Like `-fssa', this is an experimental feature.

          Perform aggressive dead-code elimination in SSA form. Requires
          `-fssa'. Like `-fssa', this is an experimental feature.


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