llvm/test/Transforms/LoopStrengthReduce/ivchain.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2
; RUN: opt < %s -loop-reduce -S | FileCheck %s
; RUN: opt -passes='require<scalar-evolution>,require<target-ir>,loop(loop-reduce)' < %s -S | FileCheck %s
;
; PR11782: bad cast to AddRecExpr.
; A sign extend feeds an IVUser and cannot be hoisted into the AddRec.
; CollectIVChains should bailout on this case.


; Provide legal integer types.
target datalayout = "n8:16:32:64"

%struct = type { ptr, ptr, i16, i64, i16, i16, i16, i64, i64, i16, ptr, i64, i64, i64 }

define i32 @test(ptr %h, i32 %more, i1 %arg) nounwind uwtable {
; CHECK-LABEL: define i32 @test
; CHECK-SAME: (ptr [[H:%.*]], i32 [[MORE:%.*]], i1 [[ARG:%.*]]) #[[ATTR0:[0-9]+]] {
; CHECK-NEXT:  entry:
; CHECK-NEXT:    br i1 [[ARG]], label [[LAND_END238:%.*]], label [[RETURN:%.*]]
; CHECK:       land.end238:
; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
; CHECK:       for.body:
; CHECK-NEXT:    [[LSR_IV:%.*]] = phi ptr [ [[SCEVGEP:%.*]], [[SW_EPILOG:%.*]] ], [ undef, [[LAND_END238]] ]
; CHECK-NEXT:    [[COLUMN_N_0:%.*]] = phi i16 [ 0, [[LAND_END238]] ], [ [[INC601:%.*]], [[SW_EPILOG]] ]
; CHECK-NEXT:    [[CONV250:%.*]] = sext i16 [[COLUMN_N_0]] to i32
; CHECK-NEXT:    [[ADD257:%.*]] = add nsw i32 [[CONV250]], 1
; CHECK-NEXT:    [[CONV258:%.*]] = trunc i32 [[ADD257]] to i16
; CHECK-NEXT:    [[CMP263:%.*]] = icmp ult i16 undef, 2
; CHECK-NEXT:    br label [[IF_END388:%.*]]
; CHECK:       if.end388:
; CHECK-NEXT:    [[CALL405:%.*]] = call signext i16 @SQLColAttribute(ptr undef, i16 zeroext [[CONV258]], i16 zeroext 1003, ptr null, i16 signext 0, ptr null, ptr [[LSR_IV]]) #[[ATTR1:[0-9]+]]
; CHECK-NEXT:    br label [[SW_EPILOG]]
; CHECK:       sw.epilog:
; CHECK-NEXT:    [[INC601]] = add i16 [[COLUMN_N_0]], 1
; CHECK-NEXT:    [[SCEVGEP]] = getelementptr i8, ptr [[LSR_IV]], i64 88
; CHECK-NEXT:    br label [[FOR_BODY]]
; CHECK:       return:
; CHECK-NEXT:    ret i32 1
;
entry:
  br i1 %arg, label %land.end238, label %return

land.end238:                                      ; preds = %if.end229
  br label %for.body

for.body:                                         ; preds = %sw.epilog, %land.end238
  %fbh.0 = phi ptr [ undef, %land.end238 ], [ %incdec.ptr, %sw.epilog ]
  %column_n.0 = phi i16 [ 0, %land.end238 ], [ %inc601, %sw.epilog ]
  %conv250 = sext i16 %column_n.0 to i32
  %add257 = add nsw i32 %conv250, 1
  %conv258 = trunc i32 %add257 to i16
  %cmp263 = icmp ult i16 undef, 2
  br label %if.end388

if.end388:                                        ; preds = %if.then380, %if.else356
  %ColLength = getelementptr inbounds %struct, ptr %fbh.0, i64 0, i32 7
  %call405 = call signext i16 @SQLColAttribute(ptr undef, i16 zeroext %conv258, i16 zeroext 1003, ptr null, i16 signext 0, ptr null, ptr %ColLength) nounwind
  br label %sw.epilog

sw.epilog:                                        ; preds = %sw.bb542, %sw.bb523, %if.end475
  %inc601 = add i16 %column_n.0, 1
  %incdec.ptr = getelementptr inbounds %struct, ptr %fbh.0, i64 1
  br label %for.body

return:                                           ; preds = %entry
  ret i32 1
}

declare signext i16 @SQLColAttribute(ptr, i16 zeroext, i16 zeroext, ptr, i16 signext, ptr, ptr)