I want to use the clang front-end to convert mips.c to mips.ll which is a llvm IR.
So I use the command:
clang -cc1 O3 mips.c -emit-llvm.
A fatal error occurs: 'stdio.h'(which is included in mips.c) file not found.
Then I change the command as following:
clang -Xclang -cc1 O3 mips.c -emit-llvm.
Another error occurs: -emit-llvm cannot be used when linking
How can I solve the problem?
As written in the error message, you can only compile when emitting LLVM IR, not link.
-c for the bitcode or
-S for the readable form to your command line:
clang -Xclang -cc1 -O3 mips.c -emit-llvm -S
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