intel/llvm
1
0
Fork 0
mirror of https://github.com/intel/llvm.git synced 2026-01-24 08:30:34 +08:00
Code Issues Packages Projects Releases Wiki Activity

[PowerPC] Update P9 vector costs for insert/extract element

Browse Source 
The PPC vector cost model values for insert/extract element reflect older
processors that lacked vector insert/extract and move-to/move-from VSR
instructions.  Update getVectorInstrCost to give appropriate values for when
the newer instructions are present.

Differential Revision: https://reviews.llvm.org/D60160

llvm-svn: 359313
This commit is contained in:
Roland Froese
2019-04-26 16:14:17 +00:00
parent 5f184f1780
commit 4b17772b9e
2 changed files with 53 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files

29
llvm/lib/Target/PowerPC/PPCTargetTransformInfo.cpp
View File

@@ -412,6 +412,35 @@ int PPCTTIImpl::getVectorInstrCost(unsigned Opcode, Type *Val, unsigned Index) {
return 0;
return Cost;
} else if (Val->getScalarType()->isIntegerTy() && Index != -1U) {
if (ST->hasP9Altivec()) {
if (ISD == ISD::INSERT_VECTOR_ELT)
// A move-to VSR and a permute/insert. Assume vector operation cost
// for both (cost will be 2x on P9).
return vectorCostAdjustment(2, Opcode, Val, nullptr);
// It's an extract. Maybe we can do a cheap move-from VSR.
unsigned EltSize = Val->getScalarSizeInBits();
if (EltSize == 64) {
unsigned MfvsrdIndex = ST->isLittleEndian() ? 1 : 0;
if (Index == MfvsrdIndex)
return 1;
} else if (EltSize == 32) {
unsigned MfvsrwzIndex = ST->isLittleEndian() ? 2 : 1;
if (Index == MfvsrwzIndex)
return 1;
}
// We need a vector extract (or mfvsrld). Assume vector operation cost.
// The cost of the load constant for a vector extract is disregarded
// (invariant, easily schedulable).
return vectorCostAdjustment(1, Opcode, Val, nullptr);
} else if (ST->hasDirectMove())
// Assume permute has standard cost.
// Assume move-to/move-from VSR have 2x standard cost.
return 3;
}
// Estimated cost of a load-hit-store delay. This was obtained

48
llvm/test/Analysis/CostModel/PowerPC/insert_extract.ll
View File

@@ -14,15 +14,15 @@ define i32 @insert(i32 %arg) {
; CHECK-P7-NEXT: Cost Model: Found an estimated cost of 0 for instruction: ret i32 undef
;
; CHECK-P8LE-LABEL: 'insert'
; CHECK-P8LE-NEXT: Cost Model: Found an estimated cost of 10 for instruction: %x = insertelement <4 x i32> undef, i32 %arg, i32 0
; CHECK-P8LE-NEXT: Cost Model: Found an estimated cost of 3 for instruction: %x = insertelement <4 x i32> undef, i32 %arg, i32 0
; CHECK-P8LE-NEXT: Cost Model: Found an estimated cost of 0 for instruction: ret i32 undef
;
; CHECK-P9BE-LABEL: 'insert'
; CHECK-P9BE-NEXT: Cost Model: Found an estimated cost of 11 for instruction: %x = insertelement <4 x i32> undef, i32 %arg, i32 0
; CHECK-P9BE-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %x = insertelement <4 x i32> undef, i32 %arg, i32 0
; CHECK-P9BE-NEXT: Cost Model: Found an estimated cost of 0 for instruction: ret i32 undef
;
; CHECK-P9LE-LABEL: 'insert'
; CHECK-P9LE-NEXT: Cost Model: Found an estimated cost of 11 for instruction: %x = insertelement <4 x i32> undef, i32 %arg, i32 0
; CHECK-P9LE-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %x = insertelement <4 x i32> undef, i32 %arg, i32 0
; CHECK-P9LE-NEXT: Cost Model: Found an estimated cost of 0 for instruction: ret i32 undef
;
%x = insertelement <4 x i32> undef, i32 %arg, i32 0
@@ -40,11 +40,11 @@ define i32 @extract(<4 x i32> %arg) {
; CHECK-P8LE-NEXT: Cost Model: Found an estimated cost of 0 for instruction: ret i32 %x
;
; CHECK-P9BE-LABEL: 'extract'
; CHECK-P9BE-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %x = extractelement <4 x i32> %arg, i32 0
; CHECK-P9BE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %x = extractelement <4 x i32> %arg, i32 0
; CHECK-P9BE-NEXT: Cost Model: Found an estimated cost of 0 for instruction: ret i32 %x
;
; CHECK-P9LE-LABEL: 'extract'
; CHECK-P9LE-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %x = extractelement <4 x i32> %arg, i32 0
; CHECK-P9LE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %x = extractelement <4 x i32> %arg, i32 0
; CHECK-P9LE-NEXT: Cost Model: Found an estimated cost of 0 for instruction: ret i32 %x
;
%x = extractelement <4 x i32> %arg, i32 0
@@ -83,15 +83,15 @@ define void @test4xi32(<4 x i32> %v1, i32 %x1) {
; CHECK-P7-NEXT: Cost Model: Found an estimated cost of 0 for instruction: ret void
;
; CHECK-P8LE-LABEL: 'test4xi32'
; CHECK-P8LE-NEXT: Cost Model: Found an estimated cost of 10 for instruction: %v2 = insertelement <4 x i32> %v1, i32 %x1, i32 2
; CHECK-P8LE-NEXT: Cost Model: Found an estimated cost of 3 for instruction: %v2 = insertelement <4 x i32> %v1, i32 %x1, i32 2
; CHECK-P8LE-NEXT: Cost Model: Found an estimated cost of 0 for instruction: ret void
;
; CHECK-P9BE-LABEL: 'test4xi32'
; CHECK-P9BE-NEXT: Cost Model: Found an estimated cost of 11 for instruction: %v2 = insertelement <4 x i32> %v1, i32 %x1, i32 2
; CHECK-P9BE-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %v2 = insertelement <4 x i32> %v1, i32 %x1, i32 2
; CHECK-P9BE-NEXT: Cost Model: Found an estimated cost of 0 for instruction: ret void
;
; CHECK-P9LE-LABEL: 'test4xi32'
; CHECK-P9LE-NEXT: Cost Model: Found an estimated cost of 11 for instruction: %v2 = insertelement <4 x i32> %v1, i32 %x1, i32 2
; CHECK-P9LE-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %v2 = insertelement <4 x i32> %v1, i32 %x1, i32 2
; CHECK-P9LE-NEXT: Cost Model: Found an estimated cost of 0 for instruction: ret void
;
%v2 = insertelement <4 x i32> %v1, i32 %x1, i32 2
@@ -114,17 +114,17 @@ define void @vexti32(<4 x i32> %p1) {
; CHECK-P8LE-NEXT: Cost Model: Found an estimated cost of 0 for instruction: ret void
;
; CHECK-P9BE-LABEL: 'vexti32'
; CHECK-P9BE-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %i1 = extractelement <4 x i32> %p1, i32 0
; CHECK-P9BE-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %i2 = extractelement <4 x i32> %p1, i32 1
; CHECK-P9BE-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %i3 = extractelement <4 x i32> %p1, i32 2
; CHECK-P9BE-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %i4 = extractelement <4 x i32> %p1, i32 3
; CHECK-P9BE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %i1 = extractelement <4 x i32> %p1, i32 0
; CHECK-P9BE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %i2 = extractelement <4 x i32> %p1, i32 1
; CHECK-P9BE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %i3 = extractelement <4 x i32> %p1, i32 2
; CHECK-P9BE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %i4 = extractelement <4 x i32> %p1, i32 3
; CHECK-P9BE-NEXT: Cost Model: Found an estimated cost of 0 for instruction: ret void
;
; CHECK-P9LE-LABEL: 'vexti32'
; CHECK-P9LE-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %i1 = extractelement <4 x i32> %p1, i32 0
; CHECK-P9LE-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %i2 = extractelement <4 x i32> %p1, i32 1
; CHECK-P9LE-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %i3 = extractelement <4 x i32> %p1, i32 2
; CHECK-P9LE-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %i4 = extractelement <4 x i32> %p1, i32 3
; CHECK-P9LE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %i1 = extractelement <4 x i32> %p1, i32 0
; CHECK-P9LE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %i2 = extractelement <4 x i32> %p1, i32 1
; CHECK-P9LE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %i3 = extractelement <4 x i32> %p1, i32 2
; CHECK-P9LE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %i4 = extractelement <4 x i32> %p1, i32 3
; CHECK-P9LE-NEXT: Cost Model: Found an estimated cost of 0 for instruction: ret void
;
%i1 = extractelement <4 x i32> %p1, i32 0
@@ -146,13 +146,13 @@ define void @vexti64(<2 x i64> %p1) {
; CHECK-P8LE-NEXT: Cost Model: Found an estimated cost of 0 for instruction: ret void
;
; CHECK-P9BE-LABEL: 'vexti64'
; CHECK-P9BE-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %i1 = extractelement <2 x i64> %p1, i32 0
; CHECK-P9BE-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %i2 = extractelement <2 x i64> %p1, i32 1
; CHECK-P9BE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %i1 = extractelement <2 x i64> %p1, i32 0
; CHECK-P9BE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %i2 = extractelement <2 x i64> %p1, i32 1
; CHECK-P9BE-NEXT: Cost Model: Found an estimated cost of 0 for instruction: ret void
;
; CHECK-P9LE-LABEL: 'vexti64'
; CHECK-P9LE-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %i1 = extractelement <2 x i64> %p1, i32 0
; CHECK-P9LE-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %i2 = extractelement <2 x i64> %p1, i32 1
; CHECK-P9LE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %i1 = extractelement <2 x i64> %p1, i32 0
; CHECK-P9LE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %i2 = extractelement <2 x i64> %p1, i32 1
; CHECK-P9LE-NEXT: Cost Model: Found an estimated cost of 0 for instruction: ret void
;
%i1 = extractelement <2 x i64> %p1, i32 0
@@ -172,13 +172,13 @@ define void @vext(<8 x i16> %p1, <16 x i8> %p2) {
; CHECK-P8LE-NEXT: Cost Model: Found an estimated cost of 0 for instruction: ret void
;
; CHECK-P9BE-LABEL: 'vext'
; CHECK-P9BE-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %i1 = extractelement <8 x i16> %p1, i32 0
; CHECK-P9BE-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %i2 = extractelement <16 x i8> %p2, i32 0
; CHECK-P9BE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %i1 = extractelement <8 x i16> %p1, i32 0
; CHECK-P9BE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %i2 = extractelement <16 x i8> %p2, i32 0
; CHECK-P9BE-NEXT: Cost Model: Found an estimated cost of 0 for instruction: ret void
;
; CHECK-P9LE-LABEL: 'vext'
; CHECK-P9LE-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %i1 = extractelement <8 x i16> %p1, i32 0
; CHECK-P9LE-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %i2 = extractelement <16 x i8> %p2, i32 0
; CHECK-P9LE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %i1 = extractelement <8 x i16> %p1, i32 0
; CHECK-P9LE-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %i2 = extractelement <16 x i8> %p2, i32 0
; CHECK-P9LE-NEXT: Cost Model: Found an estimated cost of 0 for instruction: ret void
;
%i1 = extractelement <8 x i16> %p1, i32 0