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The following patch removes r2 from call_really_used_regs[] when appropriate so that it is no longer treated as killed across calls. This patch along with Mostafa's, http://gcc.gnu.org/ml/gcc-patches/2005-05/msg02856.html, allows gcse.c to optimize TOC loads across calls. Bootstrapped and regtested on powerpc64-unknown-linux-gnu with no failures. OK for mainline? -Pat (See attached file: patch.tocreg)
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