llvm/test/Transforms/LoopVectorize/preserve-inbounds-gep-with-pointer-casts.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals none --version 6
; RUN: opt -passes=loop-vectorize -force-vector-width=4 -force-vector-interleave=2 -S %s | FileCheck %s

define void @preserve_inbounds_through_noop_gep(ptr %p) {
; CHECK-LABEL: define void @preserve_inbounds_through_noop_gep(
; CHECK-SAME: ptr [[P:%.*]]) {
; CHECK-NEXT:  [[VECTOR_BODY:.*:]]
; CHECK-NEXT:    br label %[[VECTOR_PH:.*]]
; CHECK:       [[VECTOR_PH]]:
; CHECK-NEXT:    br label %[[VECTOR_BODY1:.*]]
; CHECK:       [[VECTOR_BODY1]]:
; CHECK-NEXT:    [[INDEX:%.*]] = phi i32 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY1]] ]
; CHECK-NEXT:    [[TMP0:%.*]] = getelementptr inbounds i32, ptr [[P]], i32 [[INDEX]]
; CHECK-NEXT:    [[TMP1:%.*]] = getelementptr i8, ptr [[TMP0]], i64 0
; CHECK-NEXT:    [[TMP2:%.*]] = getelementptr inbounds i32, ptr [[TMP1]], i64 4
; CHECK-NEXT:    store <4 x i32> zeroinitializer, ptr [[TMP1]], align 4
; CHECK-NEXT:    store <4 x i32> zeroinitializer, ptr [[TMP2]], align 4
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 8
; CHECK-NEXT:    [[TMP3:%.*]] = icmp eq i32 [[INDEX_NEXT]], 1000
; CHECK-NEXT:    br i1 [[TMP3]], label %[[SCALAR_PH:.*]], label %[[VECTOR_BODY1]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK:       [[SCALAR_PH]]:
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop

loop:
  %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ]
  %gep = getelementptr inbounds i32, ptr %p, i32 %iv
  %noop = getelementptr i8, ptr %gep, i64 0
  store i32 0, ptr %noop
  %iv.next = add nsw i32 %iv, 1
  %ec = icmp eq i32 %iv.next, 1000
  br i1 %ec, label %exit, label %loop

exit:
  ret void
}

define void @bitcast_in_ptr_chain(ptr %src, ptr noalias %dst) {
; CHECK-LABEL: define void @bitcast_in_ptr_chain(
; CHECK-SAME: ptr [[SRC:%.*]], ptr noalias [[DST:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*:]]
; CHECK-NEXT:    br label %[[VECTOR_PH:.*]]
; CHECK:       [[VECTOR_PH]]:
; CHECK-NEXT:    br label %[[VECTOR_BODY:.*]]
; CHECK:       [[VECTOR_BODY]]:
; CHECK-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT:    [[TMP0:%.*]] = getelementptr inbounds double, ptr [[SRC]], i64 [[INDEX]]
; CHECK-NEXT:    [[TMP2:%.*]] = getelementptr inbounds double, ptr [[TMP0]], i64 4
; CHECK-NEXT:    [[WIDE_LOAD:%.*]] = load <4 x double>, ptr [[TMP0]], align 8
; CHECK-NEXT:    [[WIDE_LOAD1:%.*]] = load <4 x double>, ptr [[TMP2]], align 8
; CHECK-NEXT:    [[TMP3:%.*]] = getelementptr inbounds double, ptr [[DST]], i64 [[INDEX]]
; CHECK-NEXT:    [[TMP4:%.*]] = getelementptr inbounds double, ptr [[TMP3]], i64 4
; CHECK-NEXT:    store <4 x double> [[WIDE_LOAD]], ptr [[TMP3]], align 8
; CHECK-NEXT:    store <4 x double> [[WIDE_LOAD1]], ptr [[TMP4]], align 8
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 8
; CHECK-NEXT:    [[TMP5:%.*]] = icmp eq i64 [[INDEX_NEXT]], 1000
; CHECK-NEXT:    br i1 [[TMP5]], label %[[SCALAR_PH:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP3:![0-9]+]]
; CHECK:       [[SCALAR_PH]]:
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop

loop:
  %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
  %gep.src = getelementptr inbounds double, ptr %src, i64 %iv
  %bc = bitcast ptr %gep.src to ptr
  %val = load double, ptr %bc, align 8
  %gep.dst = getelementptr inbounds double, ptr %dst, i64 %iv
  store double %val, ptr %gep.dst, align 8
  %iv.next = add i64 %iv, 1
  %ec = icmp eq i64 %iv.next, 1000
  br i1 %ec, label %exit, label %loop

exit:
  ret void
}

define void @addrspacecast_in_ptr_chain(ptr addrspace(1) %src, ptr noalias %dst) {
; CHECK-LABEL: define void @addrspacecast_in_ptr_chain(
; CHECK-SAME: ptr addrspace(1) [[SRC:%.*]], ptr noalias [[DST:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*:]]
; CHECK-NEXT:    br label %[[VECTOR_PH:.*]]
; CHECK:       [[VECTOR_PH]]:
; CHECK-NEXT:    br label %[[VECTOR_BODY:.*]]
; CHECK:       [[VECTOR_BODY]]:
; CHECK-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT:    [[VEC_IND:%.*]] = phi <4 x i64> [ <i64 0, i64 1, i64 2, i64 3>, %[[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT:    [[STEP_ADD:%.*]] = add nuw <4 x i64> [[VEC_IND]], splat (i64 4)
; CHECK-NEXT:    [[TMP0:%.*]] = getelementptr inbounds double, ptr addrspace(1) [[SRC]], <4 x i64> [[VEC_IND]]
; CHECK-NEXT:    [[TMP1:%.*]] = getelementptr inbounds double, ptr addrspace(1) [[SRC]], <4 x i64> [[STEP_ADD]]
; CHECK-NEXT:    [[TMP2:%.*]] = addrspacecast <4 x ptr addrspace(1)> [[TMP0]] to <4 x ptr>
; CHECK-NEXT:    [[TMP7:%.*]] = addrspacecast <4 x ptr addrspace(1)> [[TMP1]] to <4 x ptr>
; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <4 x ptr> [[TMP2]], i64 0
; CHECK-NEXT:    [[TMP12:%.*]] = load double, ptr [[TMP3]], align 8
; CHECK-NEXT:    [[TMP4:%.*]] = extractelement <4 x ptr> [[TMP2]], i64 1
; CHECK-NEXT:    [[TMP13:%.*]] = load double, ptr [[TMP4]], align 8
; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <4 x ptr> [[TMP2]], i64 2
; CHECK-NEXT:    [[TMP14:%.*]] = load double, ptr [[TMP5]], align 8
; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <4 x ptr> [[TMP2]], i64 3
; CHECK-NEXT:    [[TMP15:%.*]] = load double, ptr [[TMP6]], align 8
; CHECK-NEXT:    [[TMP16:%.*]] = insertelement <4 x double> poison, double [[TMP12]], i32 0
; CHECK-NEXT:    [[TMP17:%.*]] = insertelement <4 x double> [[TMP16]], double [[TMP13]], i32 1
; CHECK-NEXT:    [[TMP18:%.*]] = insertelement <4 x double> [[TMP17]], double [[TMP14]], i32 2
; CHECK-NEXT:    [[TMP19:%.*]] = insertelement <4 x double> [[TMP18]], double [[TMP15]], i32 3
; CHECK-NEXT:    [[TMP8:%.*]] = extractelement <4 x ptr> [[TMP7]], i64 0
; CHECK-NEXT:    [[TMP20:%.*]] = load double, ptr [[TMP8]], align 8
; CHECK-NEXT:    [[TMP9:%.*]] = extractelement <4 x ptr> [[TMP7]], i64 1
; CHECK-NEXT:    [[TMP21:%.*]] = load double, ptr [[TMP9]], align 8
; CHECK-NEXT:    [[TMP10:%.*]] = extractelement <4 x ptr> [[TMP7]], i64 2
; CHECK-NEXT:    [[TMP22:%.*]] = load double, ptr [[TMP10]], align 8
; CHECK-NEXT:    [[TMP11:%.*]] = extractelement <4 x ptr> [[TMP7]], i64 3
; CHECK-NEXT:    [[TMP23:%.*]] = load double, ptr [[TMP11]], align 8
; CHECK-NEXT:    [[TMP24:%.*]] = insertelement <4 x double> poison, double [[TMP20]], i32 0
; CHECK-NEXT:    [[TMP25:%.*]] = insertelement <4 x double> [[TMP24]], double [[TMP21]], i32 1
; CHECK-NEXT:    [[TMP26:%.*]] = insertelement <4 x double> [[TMP25]], double [[TMP22]], i32 2
; CHECK-NEXT:    [[TMP27:%.*]] = insertelement <4 x double> [[TMP26]], double [[TMP23]], i32 3
; CHECK-NEXT:    [[TMP28:%.*]] = getelementptr inbounds double, ptr [[DST]], i64 [[INDEX]]
; CHECK-NEXT:    [[TMP29:%.*]] = getelementptr inbounds double, ptr [[TMP28]], i64 4
; CHECK-NEXT:    store <4 x double> [[TMP19]], ptr [[TMP28]], align 8
; CHECK-NEXT:    store <4 x double> [[TMP27]], ptr [[TMP29]], align 8
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 8
; CHECK-NEXT:    [[VEC_IND_NEXT]] = add <4 x i64> [[STEP_ADD]], splat (i64 4)
; CHECK-NEXT:    [[TMP30:%.*]] = icmp eq i64 [[INDEX_NEXT]], 1000
; CHECK-NEXT:    br i1 [[TMP30]], label %[[SCALAR_PH:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]]
; CHECK:       [[SCALAR_PH]]:
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop

loop:
  %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
  %gep.src = getelementptr inbounds double, ptr addrspace(1) %src, i64 %iv
  %ac = addrspacecast ptr addrspace(1) %gep.src to ptr
  %val = load double, ptr %ac, align 8
  %gep.dst = getelementptr inbounds double, ptr %dst, i64 %iv
  store double %val, ptr %gep.dst, align 8
  %iv.next = add i64 %iv, 1
  %ec = icmp eq i64 %iv.next, 1000
  br i1 %ec, label %exit, label %loop

exit:
  ret void
}