[llvm-dev] [RFC][ThinLTO] llvm-dis ThinLTO summary dump format

[Mehdi AMINI via llvm-dev]

2017-06-02 8:46 GMT-07:00 Charles Saternos via llvm-dev <
llvm-dev at lists.llvm.org>:

> Hey all,
>
> Below is the proposed format for the dump of the ThinLTO module summary in
> the llvm-dis utility:
>

Our format are usually both way: you have to be able to parse them back.


>
> > ../build/bin/llvm-dis t.o && cat t.o.ll
> ; ModuleID = '2.o'
> source_filename = "2.ll"
> target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
> target triple = "x86_64-unknown-linux-gnu"
>
> @X = constant i32 42, section "foo", align 4
>
> @a = weak alias i32, i32* @X
>
> define void @afun() {
>   %1 = load i32, i32* @a
>   ret void
> }
>
> define void @testtest() {
>   tail call void @boop()
>   ret void
> }
>
> declare void @boop()
>
> ; Module summary:
> ;  testtest (External linkage)
> ;    Function (2 instructions)
> ;    Calls: boop
> ;  X (External linkage)
> ;    Global Variable
> ;  afun (External linkage)
> ;    Function (2 instructions)
> ;    Refs:
> ;      a
> ;  a (Weak any linkage)
> ;    Alias (aliasee X)
>
> I've implemented the above format in the llvm-dis utility, since there
> currently isn't really a way of getting ThinLTO summaries in a
> human-readable format.
>

What about the YAML serialization?

-- 
Mehdi
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