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llvm/llvm/test/Transforms/NewGVN/no_speculative_loads_with_asan.ll 

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes=newgvn -S %s | FileCheck %s
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
declare noalias ptr @_Znam(i64) #1

define i32 @TestNoAsan() {
; CHECK-LABEL: @TestNoAsan(
; CHECK-NEXT:    [[TMP1:%.*]] = tail call noalias ptr @_Znam(i64 2)
; CHECK-NEXT:    [[TMP2:%.*]] = getelementptr inbounds i8, ptr [[TMP1]], i64 1
; CHECK-NEXT:    store i8 0, ptr [[TMP2]], align 1
; CHECK-NEXT:    store i8 0, ptr [[TMP1]], align 1
; CHECK-NEXT:    [[TMP3:%.*]] = load i16, ptr [[TMP1]], align 4
; CHECK-NEXT:    [[TMP4:%.*]] = icmp eq i16 [[TMP3]], 0
; CHECK-NEXT:    br i1 [[TMP4]], label [[TMP9:%.*]], label [[TMP5:%.*]]
; CHECK:       5:
; CHECK-NEXT:    [[TMP6:%.*]] = getelementptr inbounds i8, ptr [[TMP1]], i64 2
; CHECK-NEXT:    [[TMP7:%.*]] = load i16, ptr [[TMP6]], align 2
; CHECK-NEXT:    [[TMP8:%.*]] = sext i16 [[TMP7]] to i32
; CHECK-NEXT:    br label [[TMP9]]
; CHECK:       9:
; CHECK-NEXT:    [[TMP10:%.*]] = phi i32 [ [[TMP8]], [[TMP5]] ], [ 0, [[TMP0:%.*]] ]
; CHECK-NEXT:    ret i32 [[TMP10]]
;
  %1 = tail call noalias ptr @_Znam(i64 2)
  %2 = getelementptr inbounds i8, ptr %1, i64 1
  store i8 0, ptr %2, align 1
  store i8 0, ptr %1, align 1
  %3 = load i16, ptr %1, align 4
  %4 = icmp eq i16 %3, 0
  br i1 %4, label %9, label %5

; <label>:5                                       ; preds = %0
  %6 = getelementptr inbounds i8, ptr %1, i64 2
  %7 = load i16, ptr %6, align 2
  %8 = sext i16 %7 to i32
  br label %9

; <label>:9                                      ; preds = %0, %5
  %10 = phi i32 [ %8, %5 ], [ 0, %0 ]
  ret i32 %10
}

define i32 @TestAsan() sanitize_address {
; CHECK-LABEL: @TestAsan(
; CHECK-NEXT:    [[TMP1:%.*]] = tail call noalias ptr @_Znam(i64 2)
; CHECK-NEXT:    [[TMP2:%.*]] = getelementptr inbounds i8, ptr [[TMP1]], i64 1
; CHECK-NEXT:    store i8 0, ptr [[TMP2]], align 1
; CHECK-NEXT:    store i8 0, ptr [[TMP1]], align 1
; CHECK-NEXT:    [[TMP3:%.*]] = load i16, ptr [[TMP1]], align 4
; CHECK-NEXT:    [[TMP4:%.*]] = icmp eq i16 [[TMP3]], 0
; CHECK-NEXT:    br i1 [[TMP4]], label [[TMP9:%.*]], label [[TMP5:%.*]]
; CHECK:       5:
; CHECK-NEXT:    [[TMP6:%.*]] = getelementptr inbounds i8, ptr [[TMP1]], i64 2
; CHECK-NEXT:    [[TMP7:%.*]] = load i16, ptr [[TMP6]], align 2
; CHECK-NEXT:    [[TMP8:%.*]] = sext i16 [[TMP7]] to i32
; CHECK-NEXT:    br label [[TMP9]]
; CHECK:       9:
; CHECK-NEXT:    [[TMP10:%.*]] = phi i32 [ [[TMP8]], [[TMP5]] ], [ 0, [[TMP0:%.*]] ]
; CHECK-NEXT:    ret i32 [[TMP10]]
;
  %1 = tail call noalias ptr @_Znam(i64 2)
  %2 = getelementptr inbounds i8, ptr %1, i64 1
  store i8 0, ptr %2, align 1
  store i8 0, ptr %1, align 1
  %3 = load i16, ptr %1, align 4
  %4 = icmp eq i16 %3, 0
  br i1 %4, label %9, label %5

; <label>:5                                       ; preds = %0
  %6 = getelementptr inbounds i8, ptr %1, i64 2
  %7 = load i16, ptr %6, align 2
  %8 = sext i16 %7 to i32
  br label %9

; <label>:9                                      ; preds = %0, %5
  %10 = phi i32 [ %8, %5 ], [ 0, %0 ]
  ret i32 %10
}

define i32 @TestHWAsan() sanitize_hwaddress {
; CHECK-LABEL: @TestHWAsan(
; CHECK-NEXT:    [[TMP1:%.*]] = tail call noalias ptr @_Znam(i64 2)
; CHECK-NEXT:    [[TMP2:%.*]] = getelementptr inbounds i8, ptr [[TMP1]], i64 1
; CHECK-NEXT:    store i8 0, ptr [[TMP2]], align 1
; CHECK-NEXT:    store i8 0, ptr [[TMP1]], align 1
; CHECK-NEXT:    [[TMP3:%.*]] = load i16, ptr [[TMP1]], align 4
; CHECK-NEXT:    [[TMP4:%.*]] = icmp eq i16 [[TMP3]], 0
; CHECK-NEXT:    br i1 [[TMP4]], label [[TMP9:%.*]], label [[TMP5:%.*]]
; CHECK:       5:
; CHECK-NEXT:    [[TMP6:%.*]] = getelementptr inbounds i8, ptr [[TMP1]], i64 2
; CHECK-NEXT:    [[TMP7:%.*]] = load i16, ptr [[TMP6]], align 2
; CHECK-NEXT:    [[TMP8:%.*]] = sext i16 [[TMP7]] to i32
; CHECK-NEXT:    br label [[TMP9]]
; CHECK:       9:
; CHECK-NEXT:    [[TMP10:%.*]] = phi i32 [ [[TMP8]], [[TMP5]] ], [ 0, [[TMP0:%.*]] ]
; CHECK-NEXT:    ret i32 [[TMP10]]
;
  %1 = tail call noalias ptr @_Znam(i64 2)
  %2 = getelementptr inbounds i8, ptr %1, i64 1
  store i8 0, ptr %2, align 1
  store i8 0, ptr %1, align 1
  %3 = load i16, ptr %1, align 4
  %4 = icmp eq i16 %3, 0
  br i1 %4, label %9, label %5

; <label>:5                                       ; preds = %0
  %6 = getelementptr inbounds i8, ptr %1, i64 2
  %7 = load i16, ptr %6, align 2
  %8 = sext i16 %7 to i32
  br label %9

; <label>:9                                      ; preds = %0, %5
  %10 = phi i32 [ %8, %5 ], [ 0, %0 ]
  ret i32 %10
}