Wanna learn LLVM IR fast by compiling C++ tests into LLVM IR using Clang

Clang Frontend
1

Tried to use
\T\LLVM\bin\clang -emit-llvm -S -o T0.Cpp.ir -v T0.Cpp
without success: below clang output:

C:\S\LLVM>\T\LLVM\bin\clang -emit-llvm -S -o T0.Cpp.ir -v T0.Cpp
clang version 3.9.0 (branches/release_39)
Target: x86_64-pc-windows-msvc
Thread model: posix
InstalledDir: C:\T\LLVM\bin
clang.exe: warning: T0.Cpp: 'linker' input unused
clang.exe: warning: argument unused during compilation: '-emit-llvm'

Looks like T0.Cpp was not even read.

What to do?

2

add -c

3

Does not work, just adds that -c not used during.

4

Call the file .cpp and not .Cpp.

Joerg

5

Cheer! It works! Thank you.

Does not understand resulting .ir yet it's my start to learn unknown commands.

Pavel Senatorov
Developer of programming language Ya.
http://Ya-Lang.com