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2013 Jul 05
0
[LLVMdev] Enabling vectorization with LLVM 3.3 for a DSL emitting LLVM IR
On 07/04/2013 01:39 PM, Stéphane Letz wrote:
> Hi,
>
> Our DSL can generate C or directly generate LLVM IR. With LLVM 3.3, we can vectorize the C produced code using clang with -O3, or clang with -O1 then opt -O3 -vectorize-loops. But the same program generating LLVM IR version cannot be vectorized with opt -O3 -vectorize-loops. So our guess is that our generated LLVM IR lacks some
2013 Jul 04
3
[LLVMdev] Enabling vectorization with LLVM 3.3 for a DSL emitting LLVM IR
Hi,
Our DSL can generate C or directly generate LLVM IR. With LLVM 3.3, we can vectorize the C produced code using clang with -O3, or clang with -O1 then opt -O3 -vectorize-loops. But the same program generating LLVM IR version cannot be vectorized with opt -O3 -vectorize-loops. So our guess is that our generated LLVM IR lacks some informations that are needed by the vectorization passes to