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AMDGPU: Fix assertion with bitcast from i64 constant to v4i16 

llvm-svn: 345922
This commit is contained in:
Matt Arsenault 2018-11-02 02:43:55 +00:00
parent fdddd8e734
commit 8e0269ba0b
2 changed files with 42 additions and 3 deletions
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3
llvm/lib/Target/AMDGPU/AMDGPUISelLowering.cpp
View File

@ -3817,9 +3817,10 @@ SDValue AMDGPUTargetLowering::PerformDAGCombine(SDNode *N,
if (Src.getValueType() == MVT::i64) {
SDLoc SL(N);
uint64_t CVal = C->getZExtValue();
return DAG.getNode(ISD::BUILD_VECTOR, SL, DestVT,
SDValue BV = DAG.getNode(ISD::BUILD_VECTOR, SL, MVT::v2i32,
DAG.getConstant(Lo_32(CVal), SL, MVT::i32),
DAG.getConstant(Hi_32(CVal), SL, MVT::i32));
return DAG.getNode(ISD::BITCAST, SL, DestVT, BV);
}
}

38
llvm/test/CodeGen/AMDGPU/bitcast-constant-to-vector.ll Normal file
View File

@ -0,0 +1,38 @@
; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -verify-machineinstrs < %s | FileCheck -check-prefix=GCN %s
; GCN-LABEL: {{^}}cast_constant_i64_to_build_vector_v4i16:
; GCN: global_store_dwordx2
; GCN: global_store_dword v
; GCN: global_store_short
define amdgpu_kernel void @cast_constant_i64_to_build_vector_v4i16(i8 addrspace(1)* nocapture %data) {
entry:
store i8 72, i8 addrspace(1)* %data, align 1
%arrayidx1 = getelementptr inbounds i8, i8 addrspace(1)* %data, i64 1
store i8 101, i8 addrspace(1)* %arrayidx1, align 1
%arrayidx2 = getelementptr inbounds i8, i8 addrspace(1)* %data, i64 2
store i8 108, i8 addrspace(1)* %arrayidx2, align 1
%arrayidx3 = getelementptr inbounds i8, i8 addrspace(1)* %data, i64 3
store i8 108, i8 addrspace(1)* %arrayidx3, align 1
%arrayidx4 = getelementptr inbounds i8, i8 addrspace(1)* %data, i64 4
store i8 111, i8 addrspace(1)* %arrayidx4, align 1
%arrayidx5 = getelementptr inbounds i8, i8 addrspace(1)* %data, i64 5
store i8 44, i8 addrspace(1)* %arrayidx5, align 1
%arrayidx6 = getelementptr inbounds i8, i8 addrspace(1)* %data, i64 6
store i8 32, i8 addrspace(1)* %arrayidx6, align 1
%arrayidx7 = getelementptr inbounds i8, i8 addrspace(1)* %data, i64 7
store i8 87, i8 addrspace(1)* %arrayidx7, align 1
%arrayidx8 = getelementptr inbounds i8, i8 addrspace(1)* %data, i64 8
store i8 111, i8 addrspace(1)* %arrayidx8, align 1
%arrayidx9 = getelementptr inbounds i8, i8 addrspace(1)* %data, i64 9
store i8 114, i8 addrspace(1)* %arrayidx9, align 1
%arrayidx10 = getelementptr inbounds i8, i8 addrspace(1)* %data, i64 10
store i8 108, i8 addrspace(1)* %arrayidx10, align 1
%arrayidx11 = getelementptr inbounds i8, i8 addrspace(1)* %data, i64 11
store i8 100, i8 addrspace(1)* %arrayidx11, align 1
%arrayidx12 = getelementptr inbounds i8, i8 addrspace(1)* %data, i64 12
store i8 33, i8 addrspace(1)* %arrayidx12, align 1
%arrayidx13 = getelementptr inbounds i8, i8 addrspace(1)* %data, i64 13
store i8 72, i8 addrspace(1)* %arrayidx13, align 1
ret void
}