[NFC][HWASAN] Precommit globals-access test

HWASAN does not behave as expected yet.

Reviewers: fmayer, thurstond

Reviewed By: fmayer, thurstond

Pull Request: #86771

Author: vitalybuka

llvm/test/Instrumentation/HWAddressSanitizer/globals-access.ll

@@ -0,0 +1,60 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals all --global-value-regex "x" --version 4
+; RUN: opt < %s -S -passes=hwasan -mtriple=aarch64 -hwasan-globals=0 | FileCheck %s --check-prefixes=NOGLOB
+; RUN: opt < %s -S -passes=hwasan -mtriple=aarch64 -hwasan-globals=1 | FileCheck %s
+
+@x = dso_local global i32 0, align 4
+
+;.
+; NOGLOB: @x = dso_local global i32 0, align 4
+;.
+; CHECK: @x = alias i32, inttoptr (i64 add (i64 ptrtoint (ptr @x.hwasan to i64), i64 5260204364768739328) to ptr)
+;.
+define dso_local noundef i32 @_Z3tmpv() sanitize_hwaddress {
+; NOGLOB-LABEL: define dso_local noundef i32 @_Z3tmpv(
+; NOGLOB-SAME: ) #[[ATTR0:[0-9]+]] {
+; NOGLOB-NEXT:  entry:
+; NOGLOB-NEXT:    [[TMP12:%.*]] = load i64, ptr @__hwasan_tls, align 8
+; NOGLOB-NEXT:    [[TMP1:%.*]] = or i64 [[TMP12]], 4294967295
+; NOGLOB-NEXT:    [[HWASAN_SHADOW:%.*]] = add i64 [[TMP1]], 1
+; NOGLOB-NEXT:    [[TMP2:%.*]] = inttoptr i64 [[HWASAN_SHADOW]] to ptr
+; NOGLOB-NEXT:    [[TMP3:%.*]] = lshr i64 ptrtoint (ptr @x to i64), 56
+; NOGLOB-NEXT:    [[TMP4:%.*]] = trunc i64 [[TMP3]] to i8
+; NOGLOB-NEXT:    [[TMP5:%.*]] = and i64 ptrtoint (ptr @x to i64), 72057594037927935
+; NOGLOB-NEXT:    [[TMP6:%.*]] = lshr i64 [[TMP5]], 4
+; NOGLOB-NEXT:    [[TMP7:%.*]] = getelementptr i8, ptr [[TMP2]], i64 [[TMP6]]
+; NOGLOB-NEXT:    [[TMP8:%.*]] = load i8, ptr [[TMP7]], align 1
+; NOGLOB-NEXT:    [[TMP9:%.*]] = icmp ne i8 [[TMP4]], [[TMP8]]
+; NOGLOB-NEXT:    br i1 [[TMP9]], label [[TMP10:%.*]], label [[TMP11:%.*]], !prof [[PROF1:![0-9]+]]
+; NOGLOB:       10:
+; NOGLOB-NEXT:    call void @llvm.hwasan.check.memaccess.shortgranules(ptr [[TMP2]], ptr @x, i32 2)
+; NOGLOB-NEXT:    br label [[TMP11]]
+; NOGLOB:       11:
+; NOGLOB-NEXT:    [[TMP0:%.*]] = load i32, ptr @x, align 4
+; NOGLOB-NEXT:    ret i32 [[TMP0]]
+;
+; CHECK-LABEL: define dso_local noundef i32 @_Z3tmpv(
+; CHECK-SAME: ) #[[ATTR0:[0-9]+]] {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[TMP12:%.*]] = load i64, ptr @__hwasan_tls, align 8
+; CHECK-NEXT:    [[TMP1:%.*]] = or i64 [[TMP12]], 4294967295
+; CHECK-NEXT:    [[HWASAN_SHADOW:%.*]] = add i64 [[TMP1]], 1
+; CHECK-NEXT:    [[TMP2:%.*]] = inttoptr i64 [[HWASAN_SHADOW]] to ptr
+; CHECK-NEXT:    [[TMP3:%.*]] = lshr i64 ptrtoint (ptr @x to i64), 56
+; CHECK-NEXT:    [[TMP4:%.*]] = trunc i64 [[TMP3]] to i8
+; CHECK-NEXT:    [[TMP5:%.*]] = and i64 ptrtoint (ptr @x to i64), 72057594037927935
+; CHECK-NEXT:    [[TMP6:%.*]] = lshr i64 [[TMP5]], 4
+; CHECK-NEXT:    [[TMP7:%.*]] = getelementptr i8, ptr [[TMP2]], i64 [[TMP6]]
+; CHECK-NEXT:    [[TMP8:%.*]] = load i8, ptr [[TMP7]], align 1
+; CHECK-NEXT:    [[TMP9:%.*]] = icmp ne i8 [[TMP4]], [[TMP8]]
+; CHECK-NEXT:    br i1 [[TMP9]], label [[TMP10:%.*]], label [[TMP11:%.*]], !prof [[PROF2:![0-9]+]]
+; CHECK:       10:
+; CHECK-NEXT:    call void @llvm.hwasan.check.memaccess.shortgranules(ptr [[TMP2]], ptr @x, i32 2)
+; CHECK-NEXT:    br label [[TMP11]]
+; CHECK:       11:
+; CHECK-NEXT:    [[TMP0:%.*]] = load i32, ptr @x, align 4
+; CHECK-NEXT:    ret i32 [[TMP0]]
+;
+entry:
+  %0 = load i32, ptr @x, align 4
+  ret i32 %0
+}