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Revert r291254: [AArch64] Reduce vector insert/extract cost for Falkor 

The default vector insert/extract cost is more profitable on Falkor than the
reduced cost.

llvm-svn: 303771
This commit is contained in:
Matthew Simpson 2017-05-24 16:48:39 +00:00
parent fd0c844fbb
commit 6349380fa4
2 changed files with 0 additions and 27 deletions
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1
llvm/lib/Target/AArch64/AArch64Subtarget.cpp
View File

@ -90,7 +90,6 @@ void AArch64Subtarget::initializeProperties() {
break;
case Falkor:
MaxInterleaveFactor = 4;
VectorInsertExtractBaseCost = 2;
// FIXME: remove this to enable 64-bit SLP if performance looks good.
MinVectorRegisterBitWidth = 128;
break;

26
llvm/test/Analysis/CostModel/AArch64/falkor.ll
View File

@ -1,26 +0,0 @@
; RUN: opt < %s -cost-model -analyze -mcpu=falkor | FileCheck %s
target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128"
target triple = "aarch64--linux-gnu"
; CHECK-LABEL: vectorInstrCost
define void @vectorInstrCost() {
; Vector extracts - extracting the first element should have a zero cost;
; all other elements should have a cost of two.
;
; CHECK: cost of 0 {{.*}} extractelement <2 x i64> undef, i32 0
; CHECK: cost of 2 {{.*}} extractelement <2 x i64> undef, i32 1
%t1 = extractelement <2 x i64> undef, i32 0
%t2 = extractelement <2 x i64> undef, i32 1
; Vector inserts - inserting the first element should have a zero cost; all
; other elements should have a cost of two.
;
; CHECK: cost of 0 {{.*}} insertelement <2 x i64> undef, i64 undef, i32 0
; CHECK: cost of 2 {{.*}} insertelement <2 x i64> undef, i64 undef, i32 1
%t3 = insertelement <2 x i64> undef, i64 undef, i32 0
%t4 = insertelement <2 x i64> undef, i64 undef, i32 1
ret void
}