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| author | Arnold Schwaighofer <aschwaighofer@apple.com> | 2013-03-14 19:17:02 +0000 |
|---|---|---|
| committer | Arnold Schwaighofer <aschwaighofer@apple.com> | 2013-03-14 19:17:02 +0000 |
| commit | d81511f0a671a9271d7ba10cce6c27331b57f553 (patch) | |
| tree | 776bf66db17ca79ca91b4e7b7ba8ae5bb29d4df0 /test/Analysis/CostModel | |
| parent | 042b79625f315da6378d06b5480b15894d6b06b1 (diff) | |
| download | external_llvm-d81511f0a671a9271d7ba10cce6c27331b57f553.zip external_llvm-d81511f0a671a9271d7ba10cce6c27331b57f553.tar.gz external_llvm-d81511f0a671a9271d7ba10cce6c27331b57f553.tar.bz2 | |
ARM cost model: Increase cost of some vector selects we do terrible on
By terrible I mean we store/load from the stack.
This matters on PAQp8 in _Z5trainPsS_ii (which is inlined into Mixer::update)
where we decide to vectorize a loop with a VF of 8 resulting in a 25%
degradation on a cortex-a8.
LV: Found an estimated cost of 2 for VF 8 For instruction: icmp slt i32
LV: Found an estimated cost of 2 for VF 8 For instruction: select i1, i32, i32
The bug that tracks the CodeGen part is PR14868.
radar://13403975
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177105 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Analysis/CostModel')
| -rw-r--r-- | test/Analysis/CostModel/ARM/select.ll | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/test/Analysis/CostModel/ARM/select.ll b/test/Analysis/CostModel/ARM/select.ll index 96afccf..23cee9a 100644 --- a/test/Analysis/CostModel/ARM/select.ll +++ b/test/Analysis/CostModel/ARM/select.ll @@ -21,26 +21,39 @@ define void @casts() { ; Vector values ; CHECK: cost of 1 {{.*}} select %v7 = select <2 x i1> undef, <2 x i8> undef, <2 x i8> undef - ; CHECK: cost of 1 {{.*}} select + ; CHECK: cost of 10 {{.*}} select %v8 = select <4 x i1> undef, <4 x i8> undef, <4 x i8> undef - ; CHECK: cost of 1 {{.*}} select + ; CHECK: cost of 17 {{.*}} select %v9 = select <8 x i1> undef, <8 x i8> undef, <8 x i8> undef - ; CHECK: cost of 1 {{.*}} select + ; CHECK: cost of 33 {{.*}} select %v10 = select <16 x i1> undef, <16 x i8> undef, <16 x i8> undef ; CHECK: cost of 1 {{.*}} select %v11 = select <2 x i1> undef, <2 x i16> undef, <2 x i16> undef - ; CHECK: cost of 1 {{.*}} select + ; CHECK: cost of 9 {{.*}} select %v12 = select <4 x i1> undef, <4 x i16> undef, <4 x i16> undef - ; CHECK: cost of 1 {{.*}} select + ; CHECK: cost of 17 {{.*}} select %v13 = select <8 x i1> undef, <8 x i16> undef, <8 x i16> undef + ; CHECK: cost of 40 {{.*}} select + %v13b = select <16 x i1> undef, <16 x i16> undef, <16 x i16> undef ; CHECK: cost of 1 {{.*}} select %v14 = select <2 x i1> undef, <2 x i32> undef, <2 x i32> undef ; CHECK: cost of 1 {{.*}} select %v15 = select <4 x i1> undef, <4 x i32> undef, <4 x i32> undef + ; CHECK: cost of 41 {{.*}} select + %v15b = select <8 x i1> undef, <8 x i32> undef, <8 x i32> undef + ; CHECK: cost of 82 {{.*}} select + %v15c = select <16 x i1> undef, <16 x i32> undef, <16 x i32> undef + ; CHECK: cost of 1 {{.*}} select %v16 = select <2 x i1> undef, <2 x i64> undef, <2 x i64> undef + ; CHECK: cost of 19 {{.*}} select + %v16a = select <4 x i1> undef, <4 x i64> undef, <4 x i64> undef + ; CHECK: cost of 50 {{.*}} select + %v16b = select <8 x i1> undef, <8 x i64> undef, <8 x i64> undef + ; CHECK: cost of 100 {{.*}} select + %v16c = select <16 x i1> undef, <16 x i64> undef, <16 x i64> undef ; CHECK: cost of 1 {{.*}} select %v17 = select <2 x i1> undef, <2 x float> undef, <2 x float> undef |