[cfe-dev] Converting a clang -cc1 invocation into an llc invocation

[Edmund Grimley Evans]

I've been compiling programs by invoking clang -cc1 like this:

clang -cc1 -triple thumbv7-eabi -O3 -target-cpu cortex-a8 t.c -S

I encounter an interesting problem that I want to investigate by looking
at the SelectionDAGs. However, clang -cc1 doesn't accept the
-view-legalize-dags option that llc accepts. What should I do?

I notice that (strings `which clang` | grep view-legalize-dags), so is
there a way of giving that argument to clang -cc1?

Alternatively, is there a way of converting the clang -cc1 invocation
into an llc invocation that will give exactly the same behaviour so that
I can do the following?

clang -cc1 -triple thumbv7-eabi -O3 -target-cpu cortex-a8 t.c
-emit-llvm-bc
llc t.bc ... -view-legalize-dags






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