llvm-project/llvm/test/Analysis/Delinearization
Tobias Grosser e3684d0b84 [SCEV] Assume parameters coming from function calls contain IVs
The optimistic delinearization implemented in LLVM detects array sizes by
looking for non-linear products between parameters and induction variables.
In OpenCL code, such products often look like:

  A[get_global_id(0) * N + get_global_id(1)]

Hence, the IV is hidden in the get_global_id() call and consequently
delinearization would fail as no induction variable is available that helps
us to identify N as array size parameter.

We now use a very simple heuristic to change this. We assume that each parameter
that comes directly from a function call is a hidden induction variable. As
a result, we can delinearize the access above to:

  A[get_global_id(0)][get_global_id(1]

llvm-svn: 304073
2017-05-27 15:17:49 +00:00
..
a.ll [ValueTracking] Make poison propagation more aggressive 2017-02-22 06:52:32 +00:00
constant_functions_multi_dim.ll [SCEV] Assume parameters coming from function calls contain IVs 2017-05-27 15:17:49 +00:00
divide_by_one.ll
gcd_multiply_expr.ll
himeno_1.ll
himeno_2.ll
iv_times_constant_in_subscript.ll [ValueTracking] Make poison propagation more aggressive 2017-02-22 06:52:32 +00:00
lit.local.cfg
multidim_ivs_and_integer_offsets_3d.ll
multidim_ivs_and_integer_offsets_nts_3d.ll
multidim_ivs_and_parameteric_offsets_3d.ll
multidim_only_ivs_2d.ll
multidim_only_ivs_2d_nested.ll
multidim_only_ivs_3d.ll
multidim_only_ivs_3d_cast.ll
multidim_two_accesses_different_delinearization.ll
parameter_addrec_product.ll
terms_with_identity_factor.ll
type_mismatch.ll
undef.ll