[LLVMdev] Alignments in LLVM IR

[Duncan P. N. Exon Smith]

On 2014-Apr-15, at 3:41, Jera Hensel <jera.hensel at gmail.com> wrote:

> - Do alignments provide additional semantics to be obeyed by the compiler or are they just hints that can be ignored?

Depends on where the alignment is used.  For stores [1] it's a hint, as
John and Tim said.  For global variables [2] it's an additional semantic.

[1]: http://llvm.org/docs/LangRef.html#store-instruction
[2]: http://llvm.org/docs/LangRef.html#global-variables