llvm/test/Transforms/SCCP/ipsccp-range-crashes.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -ipsccp -S %s | FileCheck %s

; A few test cases exposing crashes with the initial range implementation.

@global.2 = external dso_local unnamed_addr constant [25 x i8], align 1
@global = internal local_unnamed_addr global i32 0, align 4
@global.3 = internal local_unnamed_addr global i32 0, align 4

define void @main(i8** %arg) {
; CHECK-LABEL: @main(
; CHECK-NEXT:  bb:
; CHECK-NEXT:    [[TMP:%.*]] = getelementptr inbounds i8*, i8** [[ARG:%.*]], i64 undef
; CHECK-NEXT:    [[TMP1:%.*]] = load i8*, i8** [[TMP]], align 8
; CHECK-NEXT:    [[TMP2:%.*]] = load i8, i8* [[TMP1]], align 1
; CHECK-NEXT:    [[TMP3:%.*]] = sext i8 [[TMP2]] to i32
; CHECK-NEXT:    [[TMP4:%.*]] = icmp ne i32 [[TMP3]], 45
; CHECK-NEXT:    [[TMP5:%.*]] = select i1 [[TMP4]], i32 2, i32 4
; CHECK-NEXT:    ret void
;
bb:
  %tmp = getelementptr inbounds i8*, i8** %arg, i64 undef
  %tmp1 = load i8*, i8** %tmp, align 8
  %tmp2 = load i8, i8* %tmp1, align 1
  %tmp3 = sext i8 %tmp2 to i32
  %tmp4 = icmp ne i32 %tmp3, 45
  %tmp5 = select i1 %tmp4, i32 2, i32 4
  ret void
}

define void @ham() local_unnamed_addr {
; CHECK-LABEL: @ham(
; CHECK-NEXT:  bb:
; CHECK-NEXT:    br label [[BB1:%.*]]
; CHECK:       bb1:
; CHECK-NEXT:    [[TMP:%.*]] = icmp slt i32 undef, 40
; CHECK-NEXT:    br i1 [[TMP]], label [[BB2:%.*]], label [[BB4:%.*]]
; CHECK:       bb2:
; CHECK-NEXT:    br label [[BB7:%.*]]
; CHECK:       bb3:
; CHECK-NEXT:    br label [[BB4]]
; CHECK:       bb4:
; CHECK-NEXT:    [[TMP5:%.*]] = phi i64 [ 0, [[BB1]] ], [ 15, [[BB3:%.*]] ]
; CHECK-NEXT:    [[TMP6:%.*]] = add i64 [[TMP5]], add (i64 xor (i64 ptrtoint ([25 x i8]* @global.2 to i64), i64 -1), i64 1)
; CHECK-NEXT:    unreachable
; CHECK:       bb7:
; CHECK-NEXT:    br label [[BB3]]
;
bb:
  br label %bb1

bb1:                                              ; preds = %bb
  %tmp = icmp slt i32 undef, 40
  br i1 %tmp, label %bb2, label %bb4

bb2:                                              ; preds = %bb1
  br label %bb7

bb3:                                              ; preds = %bb7
  br label %bb4

bb4:                                              ; preds = %bb3, %bb1
  %tmp5 = phi i64 [ 0, %bb1 ], [ %tmp10, %bb3 ]
  %tmp6 = add i64 %tmp5, add (i64 xor (i64 ptrtoint ([25 x i8]* @global.2 to i64), i64 -1), i64 1)
  unreachable

bb7:                                              ; preds = %bb2
  %tmp8 = add i64 0, 15
  %tmp9 = add i64 %tmp8, 0
  %tmp10 = add i64 %tmp9, 0
  br label %bb3
}

declare i32 @barney.4()

define void @wobble() {
; CHECK-LABEL: @wobble(
; CHECK-NEXT:  bb:
; CHECK-NEXT:    [[TMP:%.*]] = load i32, i32* @global, align 4
; CHECK-NEXT:    store i32 [[TMP]], i32* @global.3, align 4
; CHECK-NEXT:    ret void
;
bb:
  %tmp = load i32, i32* @global, align 4
  store i32 %tmp, i32* @global.3, align 4
  ret void
}

define i32 @wobble.5(i32 %arg) {
bb:
  %tmp = load i32, i32* @global.3, align 4
  %tmp1 = sdiv i32 0, %tmp
  ret i32 %tmp1
}

define void @eggs() {
; CHECK-LABEL: @eggs(
; CHECK-NEXT:  bb:
; CHECK-NEXT:    br label [[BB1:%.*]]
; CHECK:       bb1:
; CHECK-NEXT:    [[TMP:%.*]] = phi i32 [ 0, [[BB:%.*]] ], [ [[TMP2:%.*]], [[BB1]] ]
; CHECK-NEXT:    [[TMP2]] = add nsw i32 [[TMP]], 1
; CHECK-NEXT:    [[TMP3:%.*]] = call i32 @barney.4()
; CHECK-NEXT:    [[TMP4:%.*]] = icmp eq i32 [[TMP3]], 1
; CHECK-NEXT:    br i1 [[TMP4]], label [[BB1]], label [[BB5:%.*]]
; CHECK:       bb5:
; CHECK-NEXT:    store i32 [[TMP2]], i32* @global, align 4
; CHECK-NEXT:    ret void
;
bb:
  br label %bb1

bb1:                                              ; preds = %bb1, %bb
  %tmp = phi i32 [ 0, %bb ], [ %tmp2, %bb1 ]
  %tmp2 = add nsw i32 %tmp, 1
  %tmp3 = call i32 @barney.4()
  %tmp4 = icmp eq i32 %tmp3, 1
  br i1 %tmp4, label %bb1, label %bb5

bb5:                                              ; preds = %bb1
  store i32 %tmp2, i32* @global, align 4
  ret void
}

declare i32* @bar(i32) local_unnamed_addr #3

; Function Attrs: nounwind ssp uwtable
define { i8, i32* } @struct_crash(i32 %BitWidth) local_unnamed_addr #0 align 2 {
; CHECK-LABEL: @struct_crash(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    switch i32 [[BITWIDTH:%.*]], label [[IF_END:%.*]] [
; CHECK-NEXT:    i32 1, label [[CLEANUP:%.*]]
; CHECK-NEXT:    i32 8, label [[SW_BB1_I:%.*]]
; CHECK-NEXT:    ]
; CHECK:       sw.bb1.i:
; CHECK-NEXT:    br label [[CLEANUP]]
; CHECK:       if.end:
; CHECK-NEXT:    [[CALL_I:%.*]] = tail call i32* @bar(i32 [[BITWIDTH]])
; CHECK-NEXT:    br label [[CLEANUP]]
; CHECK:       cleanup:
; CHECK-NEXT:    [[V1:%.*]] = phi i32* [ [[CALL_I]], [[IF_END]] ], [ null, [[SW_BB1_I]] ], [ null, [[ENTRY:%.*]] ]
; CHECK-NEXT:    [[V2:%.*]] = phi i8 [ 0, [[IF_END]] ], [ 3, [[SW_BB1_I]] ], [ 2, [[ENTRY]] ]
; CHECK-NEXT:    [[DOTFCA_0_INSERT:%.*]] = insertvalue { i8, i32* } undef, i8 [[V2]], 0
; CHECK-NEXT:    [[DOTFCA_1_INSERT:%.*]] = insertvalue { i8, i32* } [[DOTFCA_0_INSERT]], i32* [[V1]], 1
; CHECK-NEXT:    ret { i8, i32* } [[DOTFCA_1_INSERT]]
;
entry:
  switch i32 %BitWidth, label %if.end [
  i32 1, label %cleanup
  i32 8, label %sw.bb1.i
  ]

sw.bb1.i:                                         ; preds = %entry
  br label %cleanup

if.end:                                           ; preds = %entry
  %call.i = tail call i32* @bar(i32 %BitWidth)
  br label %cleanup

cleanup:                                          ; preds = %entry, %sw.bb1.i, %sw.bb2.i, %sw.bb3.i, %sw.bb4.i, %sw.bb5.i, %if.end
  %v1 = phi i32* [ %call.i, %if.end ], [ null, %sw.bb1.i ], [ null, %entry ]
  %v2 = phi i8 [ 0, %if.end ], [ 3, %sw.bb1.i ], [ 2, %entry ]
  %.fca.0.insert = insertvalue { i8, i32* } undef, i8 %v2, 0
  %.fca.1.insert = insertvalue { i8, i32* } %.fca.0.insert, i32* %v1, 1
  ret { i8, i32* } %.fca.1.insert
}

define i64 @crash_ctpop(i1 %cond, i32* %addr) {
; CHECK-LABEL: @crash_ctpop(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    br i1 [[COND:%.*]], label [[IF_THEN:%.*]], label [[IF_ELSE:%.*]]
; CHECK:       if.then:
; CHECK-NEXT:    ret i64 0
; CHECK:       if.else:
; CHECK-NEXT:    [[LV:%.*]] = load i32, i32* [[ADDR:%.*]], align 8
; CHECK-NEXT:    [[ANDV:%.*]] = and i32 [[LV]], 16777215
; CHECK-NEXT:    [[TRUNCV:%.*]] = zext i32 [[ANDV]] to i64
; CHECK-NEXT:    [[RES:%.*]] = tail call i64 @llvm.ctpop.i64(i64 [[TRUNCV]])
; CHECK-NEXT:    ret i64 [[RES]]
;
entry:
  br i1 %cond, label %if.then, label %if.else

if.then:                                        ; preds = %entry
  ret i64 0

if.else:                                        ; preds = %entry
  %lv = load i32, i32* %addr, align 8
  %andv = and i32 %lv, 16777215
  %truncv = zext i32 %andv to i64
  %res = tail call i64 @llvm.ctpop.i64(i64 %truncv)
  ret i64 %res
}

declare i64 @llvm.ctpop.i64(i64)