[LLVMdev] Different results using -emit-llvm and llc together than just using -S?

Anton Korobeynikov anton at korobeynikov.info
Wed Mar 13 02:28:36 PDT 2013

llc and clang have different set of defaults.

E.g. llc defaults to frame pointer elimination, etc.

On Wed, Mar 13, 2013 at 4:13 AM, Ryan Taylor <ryta1203 at gmail.com> wrote:
> Why would the generated assembly results for a piece of code be different if
> I did this:
> clang -S -emit-llvm sample.c -o sample.ll
> llc sample.ll -o sample.s
> then if I did this:
> clang -S sample.c -o sample.s
> Thanks.
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With best regards, Anton Korobeynikov
Faculty of Mathematics and Mechanics, Saint Petersburg State University

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