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Folding built-in functions
- From: ranjith kumar <ranjit_kumar_b4u at yahoo dot co dot uk>
- To: gcc-help at gcc dot gnu dot org
- Date: Tue, 6 Mar 2007 18:16:52 +0000 (GMT)
- Subject: Folding built-in functions
Gcc manuals says all builtin functions are folded in
tree optimization passe(given below) that are run
after gimplification
http://gcc.gnu.org/onlinedocs/gccint/Tree_002dSSA-passes.html#Tree_002dSSA-passes
>Folding built-in functions
>This pass simplifies built-in functions, as
applicable, >with constant arguments or with
inferrable string >lengths. It is located in
tree-ssa-ccp.c and is >described by
pass_fold_builtins.
1)I find _builtin* functions in mmintrin.h,
xmmintrin.h and emmintrin.h........
I think 'Folding built-in functions' is the pass that
replaces _builtin functions when a program is
compiled. Am I right?
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