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[CostModel][X86] Add 512-bit bswap costs

This commit is contained in:
Simon Pilgrim 2021-06-06 22:36:26 +01:00
parent ed3b3cfeb9
commit 432eff22ab
2 changed files with 29 additions and 11 deletions
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6
llvm/lib/Target/X86/X86TargetTransformInfo.cpp
View File

@ -2448,6 +2448,9 @@ X86TTIImpl::getTypeBasedIntrinsicInstrCost(const IntrinsicCostAttributes &ICA,
{ ISD::BITREVERSE, MVT::v16i32, 5 },
{ ISD::BITREVERSE, MVT::v32i16, 5 },
{ ISD::BITREVERSE, MVT::v64i8, 5 },
{ ISD::BSWAP, MVT::v8i64, 1 },
{ ISD::BSWAP, MVT::v16i32, 1 },
{ ISD::BSWAP, MVT::v32i16, 1 },
{ ISD::CTLZ, MVT::v8i64, 23 },
{ ISD::CTLZ, MVT::v16i32, 22 },
{ ISD::CTLZ, MVT::v32i16, 18 },
@ -2488,6 +2491,9 @@ X86TTIImpl::getTypeBasedIntrinsicInstrCost(const IntrinsicCostAttributes &ICA,
{ ISD::BITREVERSE, MVT::v16i32, 24 },
{ ISD::BITREVERSE, MVT::v32i16, 10 },
{ ISD::BITREVERSE, MVT::v64i8, 10 },
{ ISD::BSWAP, MVT::v8i64, 4 },
{ ISD::BSWAP, MVT::v16i32, 4 },
{ ISD::BSWAP, MVT::v32i16, 4 },
{ ISD::CTLZ, MVT::v8i64, 29 },
{ ISD::CTLZ, MVT::v16i32, 35 },
{ ISD::CTLZ, MVT::v32i16, 28 },

34
llvm/test/Analysis/CostModel/X86/bswap-vec.ll
View File

@ -5,8 +5,8 @@
; RUN: opt < %s -mtriple=x86_64-unknown-linux-gnu -cost-model -analyze -mattr=+avx2 | FileCheck %s -check-prefixes=AVX,AVX2
; RUN: opt < %s -mtriple=x86_64-unknown-linux-gnu -cost-model -analyze -mattr=+xop,+avx | FileCheck %s -check-prefixes=AVX,AVX1
; RUN: opt < %s -mtriple=x86_64-unknown-linux-gnu -cost-model -analyze -mattr=+xop,+avx2 | FileCheck %s -check-prefixes=AVX,AVX2
; RUN: opt < %s -mtriple=x86_64-unknown-linux-gnu -cost-model -analyze -mattr=+avx512f | FileCheck %s -check-prefixes=AVX,AVX512
; RUN: opt < %s -mtriple=x86_64-unknown-linux-gnu -cost-model -analyze -mattr=+avx512bw | FileCheck %s -check-prefixes=AVX,AVX512
; RUN: opt < %s -mtriple=x86_64-unknown-linux-gnu -cost-model -analyze -mattr=+avx512f | FileCheck %s -check-prefixes=AVX,AVX512,AVX512F
; RUN: opt < %s -mtriple=x86_64-unknown-linux-gnu -cost-model -analyze -mattr=+avx512bw | FileCheck %s -check-prefixes=AVX,AVX512,AVX512BW
; Verify the cost of vector bswap instructions.
@ -81,9 +81,13 @@ define <8 x i64> @var_bswap_v8i64(<8 x i64> %a) {
; AVX2-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %bswap = call <8 x i64> @llvm.bswap.v8i64(<8 x i64> %a)
; AVX2-NEXT: Cost Model: Found an estimated cost of 0 for instruction: ret <8 x i64> %bswap
;
; AVX512-LABEL: 'var_bswap_v8i64'
; AVX512-NEXT: Cost Model: Found an estimated cost of 34 for instruction: %bswap = call <8 x i64> @llvm.bswap.v8i64(<8 x i64> %a)
; AVX512-NEXT: Cost Model: Found an estimated cost of 0 for instruction: ret <8 x i64> %bswap
; AVX512F-LABEL: 'var_bswap_v8i64'
; AVX512F-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %bswap = call <8 x i64> @llvm.bswap.v8i64(<8 x i64> %a)
; AVX512F-NEXT: Cost Model: Found an estimated cost of 0 for instruction: ret <8 x i64> %bswap
;
; AVX512BW-LABEL: 'var_bswap_v8i64'
; AVX512BW-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %bswap = call <8 x i64> @llvm.bswap.v8i64(<8 x i64> %a)
; AVX512BW-NEXT: Cost Model: Found an estimated cost of 0 for instruction: ret <8 x i64> %bswap
;
%bswap = call <8 x i64> @llvm.bswap.v8i64(<8 x i64> %a)
ret <8 x i64> %bswap
@ -148,9 +152,13 @@ define <16 x i32> @var_bswap_v16i32(<16 x i32> %a) {
; AVX2-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %bswap = call <16 x i32> @llvm.bswap.v16i32(<16 x i32> %a)
; AVX2-NEXT: Cost Model: Found an estimated cost of 0 for instruction: ret <16 x i32> %bswap
;
; AVX512-LABEL: 'var_bswap_v16i32'
; AVX512-NEXT: Cost Model: Found an estimated cost of 64 for instruction: %bswap = call <16 x i32> @llvm.bswap.v16i32(<16 x i32> %a)
; AVX512-NEXT: Cost Model: Found an estimated cost of 0 for instruction: ret <16 x i32> %bswap
; AVX512F-LABEL: 'var_bswap_v16i32'
; AVX512F-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %bswap = call <16 x i32> @llvm.bswap.v16i32(<16 x i32> %a)
; AVX512F-NEXT: Cost Model: Found an estimated cost of 0 for instruction: ret <16 x i32> %bswap
;
; AVX512BW-LABEL: 'var_bswap_v16i32'
; AVX512BW-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %bswap = call <16 x i32> @llvm.bswap.v16i32(<16 x i32> %a)
; AVX512BW-NEXT: Cost Model: Found an estimated cost of 0 for instruction: ret <16 x i32> %bswap
;
%bswap = call <16 x i32> @llvm.bswap.v16i32(<16 x i32> %a)
ret <16 x i32> %bswap
@ -215,9 +223,13 @@ define <32 x i16> @var_bswap_v32i16(<32 x i16> %a) {
; AVX2-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %bswap = call <32 x i16> @llvm.bswap.v32i16(<32 x i16> %a)
; AVX2-NEXT: Cost Model: Found an estimated cost of 0 for instruction: ret <32 x i16> %bswap
;
; AVX512-LABEL: 'var_bswap_v32i16'
; AVX512-NEXT: Cost Model: Found an estimated cost of 124 for instruction: %bswap = call <32 x i16> @llvm.bswap.v32i16(<32 x i16> %a)
; AVX512-NEXT: Cost Model: Found an estimated cost of 0 for instruction: ret <32 x i16> %bswap
; AVX512F-LABEL: 'var_bswap_v32i16'
; AVX512F-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %bswap = call <32 x i16> @llvm.bswap.v32i16(<32 x i16> %a)
; AVX512F-NEXT: Cost Model: Found an estimated cost of 0 for instruction: ret <32 x i16> %bswap
;
; AVX512BW-LABEL: 'var_bswap_v32i16'
; AVX512BW-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %bswap = call <32 x i16> @llvm.bswap.v32i16(<32 x i16> %a)
; AVX512BW-NEXT: Cost Model: Found an estimated cost of 0 for instruction: ret <32 x i16> %bswap
;
%bswap = call <32 x i16> @llvm.bswap.v32i16(<32 x i16> %a)
ret <32 x i16> %bswap