RPCS3/llvm-mirror
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-11-24 03:33:20 +01:00
Code Issues Projects Releases Wiki Activity

LSR: Check atomic instruction pointer operands

Browse Source 
llvm-svn: 294410
This commit is contained in:
Matt Arsenault 2017-02-08 06:44:58 +00:00
parent 15bde0a3d5
commit e887c01560
2 changed files with 98 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
lib/Transforms/Scalar/LoopStrengthReduce.cpp
View File

@ -713,7 +713,7 @@ static GlobalValue *ExtractSymbol(const SCEV *&S, ScalarEvolution &SE) {
static bool isAddressUse(Instruction *Inst, Value *OperandVal) {
bool isAddress = isa<LoadInst>(Inst);
if (StoreInst *SI = dyn_cast<StoreInst>(Inst)) {
if (SI->getOperand(1) == OperandVal)
if (SI->getPointerOperand() == OperandVal)
isAddress = true;
} else if (IntrinsicInst *II = dyn_cast<IntrinsicInst>(Inst)) {
// Addressing modes can also be folded into prefetches and a variety
@ -725,6 +725,12 @@ static bool isAddressUse(Instruction *Inst, Value *OperandVal) {
isAddress = true;
break;
}
} else if (AtomicRMWInst *RMW = dyn_cast<AtomicRMWInst>(Inst)) {
if (RMW->getPointerOperand() == OperandVal)
isAddress = true;
} else if (AtomicCmpXchgInst *CmpX = dyn_cast<AtomicCmpXchgInst>(Inst)) {
if (CmpX->getPointerOperand() == OperandVal)
isAddress = true;
}
return isAddress;
}
@ -737,6 +743,10 @@ static MemAccessTy getAccessType(const Instruction *Inst) {
AccessTy.AddrSpace = SI->getPointerAddressSpace();
} else if (const LoadInst *LI = dyn_cast<LoadInst>(Inst)) {
AccessTy.AddrSpace = LI->getPointerAddressSpace();
} else if (const AtomicRMWInst *RMW = dyn_cast<AtomicRMWInst>(Inst)) {
AccessTy.AddrSpace = RMW->getPointerAddressSpace();
} else if (const AtomicCmpXchgInst *CmpX = dyn_cast<AtomicCmpXchgInst>(Inst)) {
AccessTy.AddrSpace = CmpX->getPointerAddressSpace();
}
// All pointers have the same requirements, so canonicalize them to an

87
test/Transforms/LoopStrengthReduce/AMDGPU/atomics.ll Normal file
View File

@ -0,0 +1,87 @@
; RUN: opt -S -mtriple=amdgcn-- -mcpu=bonaire -loop-reduce < %s | FileCheck -check-prefix=OPT %s
target datalayout = "e-p:32:32-p1:64:64-p2:64:64-p3:32:32-p4:64:64-p5:32:32-p24:64:64-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64"
; Make sure the pointer / address space of AtomicRMW is considered
; OPT-LABEL: @test_local_atomicrmw_addressing_loop_uniform_index_max_offset_i32(
; OPT-NOT: getelementptr
; OPT: .lr.ph:
; OPT: %lsr.iv2 = phi i32 addrspace(3)* [ %scevgep3, %.lr.ph ], [ %arg1, %.lr.ph.preheader ]
; OPT: %lsr.iv1 = phi i32 addrspace(3)* [ %scevgep, %.lr.ph ], [ %arg0, %.lr.ph.preheader ]
; OPT: %lsr.iv = phi i32 [ %lsr.iv.next, %.lr.ph ], [ %n, %.lr.ph.preheader ]
; OPT: %scevgep4 = getelementptr i32, i32 addrspace(3)* %lsr.iv2, i32 16383
; OPT: %tmp4 = atomicrmw add i32 addrspace(3)* %scevgep4, i32 undef seq_cst
; OPT: %tmp7 = atomicrmw add i32 addrspace(3)* %lsr.iv1, i32 undef seq_cst
; OPT: %0 = atomicrmw add i32 addrspace(3)* %lsr.iv1, i32 %tmp8 seq_cst
; OPT: br i1 %exitcond
define void @test_local_atomicrmw_addressing_loop_uniform_index_max_offset_i32(i32 addrspace(3)* noalias nocapture %arg0, i32 addrspace(3)* noalias nocapture readonly %arg1, i32 %n) #0 {
bb:
%tmp = icmp sgt i32 %n, 0
br i1 %tmp, label %.lr.ph.preheader, label %._crit_edge
.lr.ph.preheader: ; preds = %bb
br label %.lr.ph
._crit_edge.loopexit: ; preds = %.lr.ph
br label %._crit_edge
._crit_edge: ; preds = %._crit_edge.loopexit, %bb
ret void
.lr.ph: ; preds = %.lr.ph, %.lr.ph.preheader
%indvars.iv = phi i32 [ %indvars.iv.next, %.lr.ph ], [ 0, %.lr.ph.preheader ]
%tmp1 = add nuw nsw i32 %indvars.iv, 16383
%tmp3 = getelementptr inbounds i32, i32 addrspace(3)* %arg1, i32 %tmp1
%tmp4 = atomicrmw add i32 addrspace(3)* %tmp3, i32 undef seq_cst
%tmp6 = getelementptr inbounds i32, i32 addrspace(3)* %arg0, i32 %indvars.iv
%tmp7 = atomicrmw add i32 addrspace(3)* %tmp6, i32 undef seq_cst
%tmp8 = add nsw i32 %tmp7, %tmp4
atomicrmw add i32 addrspace(3)* %tmp6, i32 %tmp8 seq_cst
%indvars.iv.next = add nuw nsw i32 %indvars.iv, 1
%exitcond = icmp eq i32 %indvars.iv.next, %n
br i1 %exitcond, label %._crit_edge.loopexit, label %.lr.ph
}
; OPT-LABEL: test_local_cmpxchg_addressing_loop_uniform_index_max_offset_i32(
; OPT-NOT: getelementptr
; OPT: .lr.ph:
; OPT: %lsr.iv2 = phi i32 addrspace(3)* [ %scevgep3, %.lr.ph ], [ %arg1, %.lr.ph.preheader ]
; OPT: %lsr.iv1 = phi i32 addrspace(3)* [ %scevgep, %.lr.ph ], [ %arg0, %.lr.ph.preheader ]
; OPT: %lsr.iv = phi i32 [ %lsr.iv.next, %.lr.ph ], [ %n, %.lr.ph.preheader ]
; OPT: %scevgep4 = getelementptr i32, i32 addrspace(3)* %lsr.iv2, i32 16383
; OPT: %tmp4 = cmpxchg i32 addrspace(3)* %scevgep4, i32 undef, i32 undef seq_cst monotonic
define void @test_local_cmpxchg_addressing_loop_uniform_index_max_offset_i32(i32 addrspace(3)* noalias nocapture %arg0, i32 addrspace(3)* noalias nocapture readonly %arg1, i32 %n) #0 {
bb:
%tmp = icmp sgt i32 %n, 0
br i1 %tmp, label %.lr.ph.preheader, label %._crit_edge
.lr.ph.preheader: ; preds = %bb
br label %.lr.ph
._crit_edge.loopexit: ; preds = %.lr.ph
br label %._crit_edge
._crit_edge: ; preds = %._crit_edge.loopexit, %bb
ret void
.lr.ph: ; preds = %.lr.ph, %.lr.ph.preheader
%indvars.iv = phi i32 [ %indvars.iv.next, %.lr.ph ], [ 0, %.lr.ph.preheader ]
%tmp1 = add nuw nsw i32 %indvars.iv, 16383
%tmp3 = getelementptr inbounds i32, i32 addrspace(3)* %arg1, i32 %tmp1
%tmp4 = cmpxchg i32 addrspace(3)* %tmp3, i32 undef, i32 undef seq_cst monotonic
%tmp4.0 = extractvalue { i32, i1 } %tmp4, 0
%tmp6 = getelementptr inbounds i32, i32 addrspace(3)* %arg0, i32 %indvars.iv
%tmp7 = cmpxchg i32 addrspace(3)* %tmp6, i32 undef, i32 undef seq_cst monotonic
%tmp7.0 = extractvalue { i32, i1 } %tmp7, 0
%tmp8 = add nsw i32 %tmp7.0, %tmp4.0
atomicrmw add i32 addrspace(3)* %tmp6, i32 %tmp8 seq_cst
%indvars.iv.next = add nuw nsw i32 %indvars.iv, 1
%exitcond = icmp eq i32 %indvars.iv.next, %n
br i1 %exitcond, label %._crit_edge.loopexit, label %.lr.ph
}
attributes #0 = { nounwind }