maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

[AMDGPU] Fix bug introduced in 47a5c36b37 

Summary: [AMDGPU] Fix bug introduced in 47a5c36b37

Reviewers: foad, arsenm

Reviewed By: arsenm

Subscribers: arsenm, kzhuravl, jvesely, wdng, nhaehnle, yaxunl, dstuttard, tpr, t-tye, hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D69915
This commit is contained in:
dfukalov 2019-11-06 22:05:58 +03:00
parent 96065cf79f
commit 6e8251046b
2 changed files with 16 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
llvm/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.cpp
View File

@ -738,7 +738,7 @@ unsigned GCNTTIImpl::getUserCost(const User *U,
return getShuffleCost(TTI::SK_ExtractSubvector, SrcTy, SubIndex, Ty);
if (Shuffle->changesLength())
return -1;
return BaseT::getUserCost(U, Operands);
if (Shuffle->isIdentity())
return 0;

19
llvm/test/Analysis/CostModel/AMDGPU/shufflevector.ll
View File

@ -1,7 +1,7 @@
; RUN: opt -cost-model -analyze -mtriple=amdgcn-unknown-amdhsa -mcpu=gfx900 %s | FileCheck -check-prefixes=GFX9,GCN %s
; RUN: opt -cost-model -analyze -mtriple=amdgcn-unknown-amdhsa -mcpu=fiji %s | FileCheck -check-prefixes=VI,GCN %s
; RUN: opt -cost-model -cost-kind=code-size -analyze -mtriple=amdgcn-unknown-amdhsa -mcpu=gfx900 %s | FileCheck -check-prefixes=GFX9,GCN %s
; RUN: opt -cost-model -cost-kind=code-size -analyze -mtriple=amdgcn-unknown-amdhsa -mcpu=fiji %s | FileCheck -check-prefixes=VI,GCN %s
; RUN: opt -cost-model -analyze -mtriple=amdgcn-unknown-amdhsa -mcpu=gfx900 %s | FileCheck -check-prefixes=GFX9,GCN,TPT %s
; RUN: opt -cost-model -analyze -mtriple=amdgcn-unknown-amdhsa -mcpu=fiji %s | FileCheck -check-prefixes=VI,GCN,TPT %s
; RUN: opt -cost-model -cost-kind=code-size -analyze -mtriple=amdgcn-unknown-amdhsa -mcpu=gfx900 %s | FileCheck -check-prefixes=GFX9,GCN,CS %s
; RUN: opt -cost-model -cost-kind=code-size -analyze -mtriple=amdgcn-unknown-amdhsa -mcpu=fiji %s | FileCheck -check-prefixes=VI,GCN,CS %s
; GCN-LABEL: 'shufflevector_00_v2i16'
; GFX9: estimated cost of 0 for {{.*}} shufflevector <2 x i16> %vec, <2 x i16> undef, <2 x i32> zeroinitializer
@ -51,3 +51,14 @@ define amdgpu_kernel void @shufflevector_02_v2i16(<2 x i16> addrspace(1)* %out,
store <2 x i16> %shuf, <2 x i16> addrspace(1)* %out
ret void
}
; GCN-LABEL: 'shufflevector_xxx'
; TPT: Unknown cost for {{.*}} shufflevector <2 x i8> %vec, <2 x i8> undef, <4 x i32> <i32 0, i32 1, i32 undef, i32 undef>
; CS: estimated cost of 1 for {{.*}} shufflevector <2 x i8> %vec, <2 x i8> undef, <4 x i32> <i32 0, i32 1, i32 undef, i32 undef>
; Should not assert
define amdgpu_kernel void @shufflevector_xxx(<4 x i8> addrspace(1)* %out, <2 x i8> addrspace(1)* %vaddr) {
%vec = load <2 x i8>, <2 x i8> addrspace(1)* %vaddr
%shuf = shufflevector <2 x i8> %vec, <2 x i8> undef, <4 x i32> <i32 0, i32 1, i32 undef, i32 undef>
store <4 x i8> %shuf, <4 x i8> addrspace(1)* %out
ret void
}