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

AMDGPU: Fix assertion in performSHLPtrCombine for 64-bit pointers

This commit is contained in:
Matt Arsenault 2020-08-10 12:27:52 -04:00
parent 68fab44acf
commit 6fe6b29c29
2 changed files with 22 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

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

@ -8552,7 +8552,7 @@ SDValue SITargetLowering::performSHLPtrCombine(SDNode *N,
EVT VT = N->getValueType(0);
SDValue ShlX = DAG.getNode(ISD::SHL, SL, VT, N0.getOperand(0), N1);
SDValue COffset = DAG.getConstant(Offset, SL, MVT::i32);
SDValue COffset = DAG.getConstant(Offset, SL, VT);
SDNodeFlags Flags;
Flags.setNoUnsignedWrap(N->getFlags().hasNoUnsignedWrap() &&

21
llvm/test/CodeGen/AMDGPU/shl_add_ptr_global.ll Normal file
View File

@ -0,0 +1,21 @@
; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefixes=GCN,GFX9 %s
; GCN-LABEL: {{^}}shl_base_global_ptr:
; GCN: v_add_co_u32_e32 v[[EXTRA_LO:[0-9]+]], vcc, 0x80, v4
; GCN: v_addc_co_u32_e32 v[[EXTRA_HI:[0-9]+]], vcc, 0, v5, vcc
; GCN: v_lshlrev_b64 v{{\[}}[[LO:[0-9]+]]:[[HI:[0-9]+]]{{\]}}, 2, v[4:5]
; GCN: v_mov_b32_e32 [[THREE:v[0-9]+]], 3
; GCN: global_atomic_and v{{\[}}[[LO]]:[[HI]]{{\]}}, [[THREE]], off offset:512
; GCN: global_store_dwordx2 v{{\[[0-9]+:[0-9]+\]}}, v{{\[}}[[EXTRA_LO]]:[[EXTRA_HI]]{{\]}}
define void @shl_base_global_ptr(i32 addrspace(1)* %out, i64 addrspace(1)* %extra.use, [512 x i32] addrspace(1)* %ptr) #0 {
%arrayidx0 = getelementptr inbounds [512 x i32], [512 x i32] addrspace(1)* %ptr, i64 0, i64 32
%cast = ptrtoint i32 addrspace(1)* %arrayidx0 to i64
%shl = shl i64 %cast, 2
%castback = inttoptr i64 %shl to i32 addrspace(1)*
%val = atomicrmw and i32 addrspace(1)* %castback, i32 3 seq_cst
store volatile i64 %cast, i64 addrspace(1)* %extra.use, align 4
ret void
}
attributes #0 = { nounwind }
attributes #1 = { nounwind readnone }