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e780735f3d
The underlying issues surrounding codegen for 32-bit vselects have been resolved. The pessimistic costs for 64-bit vselects remain due to the bad scalarization that is still happening there. I tested this on A57 in T32, A32 and A64 modes. I saw no regressions, and some improvements. From my benchmarks, I saw these improvements in A57 (T32) spec.cpu2000.ref.177_mesa 5.95% lnt.SingleSource/Benchmarks/Shootout/strcat 12.93% lnt.MultiSource/Benchmarks/MiBench/telecomm-CRC32/telecomm-CRC32 11.89% I also measured A57 A32, A53 T32 and A9 T32 and found no performance regressions. I see much bigger wins in third-party benchmarks with this change Differential Revision: http://reviews.llvm.org/D14743 llvm-svn: 253349
76 lines
3.1 KiB
LLVM
76 lines
3.1 KiB
LLVM
; RUN: opt < %s -cost-model -analyze -mtriple=thumbv7-apple-ios6.0.0 -mcpu=swift | FileCheck %s
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target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:32:64-v128:32:128-a0:0:32-n32-S32"
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target triple = "thumbv7-apple-ios6.0.0"
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; CHECK: casts
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define void @casts() {
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; Scalar values
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; CHECK: cost of 1 {{.*}} select
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%v1 = select i1 undef, i8 undef, i8 undef
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; CHECK: cost of 1 {{.*}} select
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%v2 = select i1 undef, i16 undef, i16 undef
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; CHECK: cost of 1 {{.*}} select
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%v3 = select i1 undef, i32 undef, i32 undef
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; CHECK: cost of 2 {{.*}} select
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%v4 = select i1 undef, i64 undef, i64 undef
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; CHECK: cost of 1 {{.*}} select
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%v5 = select i1 undef, float undef, float undef
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; CHECK: cost of 1 {{.*}} select
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%v6 = select i1 undef, double undef, double undef
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; Vector values
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; CHECK: cost of 1 {{.*}} select
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%v7 = select <2 x i1> undef, <2 x i8> undef, <2 x i8> undef
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; CHECK: cost of 1 {{.*}} select
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%v8 = select <4 x i1> undef, <4 x i8> undef, <4 x i8> undef
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; CHECK: cost of 1 {{.*}} select
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%v9 = select <8 x i1> undef, <8 x i8> undef, <8 x i8> undef
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; CHECK: cost of 1 {{.*}} select
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%v10 = select <16 x i1> undef, <16 x i8> undef, <16 x i8> undef
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; CHECK: cost of 1 {{.*}} select
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%v11 = select <2 x i1> undef, <2 x i16> undef, <2 x i16> undef
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; CHECK: cost of 1 {{.*}} select
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%v12 = select <4 x i1> undef, <4 x i16> undef, <4 x i16> undef
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; CHECK: cost of 1 {{.*}} select
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%v13 = select <8 x i1> undef, <8 x i16> undef, <8 x i16> undef
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; CHECK: cost of 2 {{.*}} select
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%v13b = select <16 x i1> undef, <16 x i16> undef, <16 x i16> undef
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; CHECK: cost of 1 {{.*}} select
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%v14 = select <2 x i1> undef, <2 x i32> undef, <2 x i32> undef
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; CHECK: cost of 1 {{.*}} select
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%v15 = select <4 x i1> undef, <4 x i32> undef, <4 x i32> undef
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; CHECK: cost of 2 {{.*}} select
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%v15b = select <8 x i1> undef, <8 x i32> undef, <8 x i32> undef
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; CHECK: cost of 4 {{.*}} select
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%v15c = select <16 x i1> undef, <16 x i32> undef, <16 x i32> undef
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; CHECK: cost of 1 {{.*}} select
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%v16 = select <2 x i1> undef, <2 x i64> undef, <2 x i64> undef
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; CHECK: cost of 19 {{.*}} select
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%v16a = select <4 x i1> undef, <4 x i64> undef, <4 x i64> undef
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; CHECK: cost of 50 {{.*}} select
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%v16b = select <8 x i1> undef, <8 x i64> undef, <8 x i64> undef
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; CHECK: cost of 100 {{.*}} select
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%v16c = select <16 x i1> undef, <16 x i64> undef, <16 x i64> undef
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; CHECK: cost of 1 {{.*}} select
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%v17 = select <2 x i1> undef, <2 x float> undef, <2 x float> undef
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; CHECK: cost of 1 {{.*}} select
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%v18 = select <4 x i1> undef, <4 x float> undef, <4 x float> undef
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; CHECK: cost of 1 {{.*}} select
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%v19 = select <2 x i1> undef, <2 x double> undef, <2 x double> undef
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; odd vectors get legalized and should have similar costs
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; CHECK: cost of 1 {{.*}} select
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%v20 = select <1 x i1> undef, <1 x i32> undef, <1 x i32> undef
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; CHECK: cost of 1 {{.*}} select
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%v21 = select <3 x i1> undef, <3 x float> undef, <3 x float> undef
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; CHECK: cost of 4 {{.*}} select
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%v22 = select <5 x i1> undef, <5 x double> undef, <5 x double> undef
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ret void
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}
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