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[PATCH] Propagate CALL_EXPR_TAILCALL through expand_builtin_* (PR middle-end/21265)

From: Jakub Jelinek <jakub at redhat dot com>
To: gcc-patches at gcc dot gnu dot org
Date: Tue, 3 May 2005 07:47:01 -0400
Subject: [PATCH] Propagate CALL_EXPR_TAILCALL through expand_builtin_* (PR middle-end/21265)
Reply-to: Jakub Jelinek <jakub at redhat dot com>

Hi!

CALL_EXPR_TAILCALL bit is not propagated through various builtin
expanders, so some calls that were previously (e.g. in 3.4.x) tail call
optimized  are not optimized any more.

Fixed by the patch below.
Ok for HEAD?  Is this suitable for 4.0 branch as well (it is actually
a regression)?

The second patch is on top of the object size checking patch I posted
yesterday, so that CALL_EXPR_TAILCALL is propagated even there.

	Jakub

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Follow-Ups:
- Re: [PATCH] Propagate CALL_EXPR_TAILCALL through expand_builtin_* (PR middle-end/21265)
  - From: Richard Henderson

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