diff options
| author | Michael Liao <michael.liao@intel.com> | 2013-03-20 22:01:10 +0000 |
|---|---|---|
| committer | Michael Liao <michael.liao@intel.com> | 2013-03-20 22:01:10 +0000 |
| commit | f74e9bf650d7c40d595d3bb60e3c901e2bccec4b (patch) | |
| tree | 26fc6ab996a2aa6e0516091cb0f5bee4483168c7 /test/Analysis/CostModel | |
| parent | 6178e5f50c0c8be26913cd93238a5035a39cdf37 (diff) | |
| download | llvm-f74e9bf650d7c40d595d3bb60e3c901e2bccec4b.tar.gz llvm-f74e9bf650d7c40d595d3bb60e3c901e2bccec4b.tar.bz2 llvm-f74e9bf650d7c40d595d3bb60e3c901e2bccec4b.tar.xz | |
Correct cost model for vector shift on AVX2
- After moving logic recognizing vector shift with scalar amount from
DAG combining into DAG lowering, we declare to customize all vector
shifts even vector shift on AVX is legal. As a result, the cost model
needs special tuning to identify these legal cases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177586 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Analysis/CostModel')
| -rw-r--r-- | test/Analysis/CostModel/X86/arith.ll | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/test/Analysis/CostModel/X86/arith.ll b/test/Analysis/CostModel/X86/arith.ll index f0521bae48..5f9444157a 100644 --- a/test/Analysis/CostModel/X86/arith.ll +++ b/test/Analysis/CostModel/X86/arith.ll @@ -72,3 +72,57 @@ define i32 @fmul(i32 %arg) { %B = fmul <8 x float> undef, undef ret i32 undef } + +; AVX: shift +; AVX2: shift +define void @shift() { + ; AVX: cost of 2 {{.*}} shl + ; AVX2: cost of 1 {{.*}} shl + %A0 = shl <4 x i32> undef, undef + ; AVX: cost of 2 {{.*}} shl + ; AVX2: cost of 1 {{.*}} shl + %A1 = shl <2 x i64> undef, undef + + ; AVX: cost of 2 {{.*}} lshr + ; AVX2: cost of 1 {{.*}} lshr + %B0 = lshr <4 x i32> undef, undef + ; AVX: cost of 2 {{.*}} lshr + ; AVX2: cost of 1 {{.*}} lshr + %B1 = lshr <2 x i64> undef, undef + + ; AVX: cost of 2 {{.*}} ashr + ; AVX2: cost of 1 {{.*}} ashr + %C0 = ashr <4 x i32> undef, undef + ; AVX: cost of 6 {{.*}} ashr + ; AVX2: cost of 6 {{.*}} ashr + %C1 = ashr <2 x i64> undef, undef + + ret void +} + +; AVX: avx2shift +; AVX2: avx2shift +define void @avx2shift() { + ; AVX: cost of 2 {{.*}} shl + ; AVX2: cost of 1 {{.*}} shl + %A0 = shl <8 x i32> undef, undef + ; AVX: cost of 2 {{.*}} shl + ; AVX2: cost of 1 {{.*}} shl + %A1 = shl <4 x i64> undef, undef + + ; AVX: cost of 2 {{.*}} lshr + ; AVX2: cost of 1 {{.*}} lshr + %B0 = lshr <8 x i32> undef, undef + ; AVX: cost of 2 {{.*}} lshr + ; AVX2: cost of 1 {{.*}} lshr + %B1 = lshr <4 x i64> undef, undef + + ; AVX: cost of 2 {{.*}} ashr + ; AVX2: cost of 1 {{.*}} ashr + %C0 = ashr <8 x i32> undef, undef + ; AVX: cost of 12 {{.*}} ashr + ; AVX2: cost of 12 {{.*}} ashr + %C1 = ashr <4 x i64> undef, undef + + ret void +} |