[PATCH] Print function attributes in rtl dumps

[Tom de Vries]

[ Fix ENOPATCH ]

On 03/29/2018 12:17 PM, Tom de Vries wrote:
> Hi,
> 
> when we compile a function with attributes:
> ...
> int __attribute__((noinline, noclone))
> foo (void)
> {
>  Â  return 2;
> }
> ...
> 
> like this:
> ...
> gcc main.c -fdump-tree-all -fdump-rtl-all
> ...
> 
> we find the function attributes starting from foo.c.004t.gimple:
> ...
> __attribute__((noclone, noinline))
> foo ()
> {
>  Â  int D.1961;
> 
>  Â  D.1961 = 2;
>  Â  return D.1961;
> }
> ...
> to foo.c.232t.optimized.
> 
> 
> But we don't find the attributes in the rtl dumps:
> ...
> $ grep __attribute__ foo.c.*r.*
> $
> ...
> 
> This patch adds printing of the function attributes in the rtl dump, 
> f.i. foo.c.235r.vregs looks like this :
> ...
> ;; Function foo (foo, funcdef_no=0, decl_uid=1958, cgraph_uid=0, 
> symbol_order=0)
> 
> function foo attributes: __attribute__((noclone, noinline))
> (note 1 0 3 NOTE_INSN_DELETED)
> (note 3 1 2 2 [bb 2] NOTE_INSN_BASIC_BLOCK)
> (note 2 3 5 2 NOTE_INSN_FUNCTION_BEG)
> (insn 5 2 8 2 (set (reg:SI 87 [ _1 ])
>  Â Â Â Â Â Â Â  (const_int 2 [0x2])) "foo.c":4 86 {*movsi_internal}
>  Â Â Â Â  (nil))
> (insn 8 5 12 2 (set (reg:SI 88 [ <retval> ])
>  Â Â Â Â Â Â Â  (reg:SI 87 [ _1 ])) "foo.c":4 86 {*movsi_internal}
>  Â Â Â Â  (nil))
> (insn 12 8 13 2 (set (reg/i:SI 0 ax)
>  Â Â Â Â Â Â Â  (reg:SI 88 [ <retval> ])) "foo.c":5 86 {*movsi_internal}
>  Â Â Â Â  (nil))
> (insn 13 12 0 2 (use (reg/i:SI 0 ax)) "foo.c":5 -1
>  Â Â Â Â  (nil))
> ...
> 
> I've added the "function foo attributes" prefix because in other rtl 
> dumps there may be quite a number of lines between the ";; Function foo" 
> header and the first insn.
> 
> OK for stage1 if bootstrap and reg-test on x86 succeeds?
> 
> Thanks,
> - Tom

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