[GlobalsModRef] Generate test checks (NFC)

Author: nikic

llvm/test/Analysis/GlobalsModRef/memset-escape.ll

@@ -1,3 +1,4 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
 ; RUN: opt < %s -O1 -S | FileCheck %s
 
 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
@@ -9,14 +10,22 @@ target triple = "x86_64-apple-macosx10.10.0"
 ; The important thing we're checking for here is the reload of (some element of)
 ; @a after the memset.
 
-; CHECK-LABEL: @main
-; CHECK: call void @llvm.memset.p0.i64{{.*}} @a
-; CHECK: store i32 3
-; CHECK: load i32, ptr getelementptr {{.*}} @a
-; CHECK: icmp eq i32
-; CHECK: br i1
-
 define i32 @main() {
+; CHECK-LABEL: define noundef i32 @main(
+; CHECK-SAME: ) local_unnamed_addr #[[ATTR0:[0-9]+]] {
+; CHECK-NEXT:  [[ENTRY:.*:]]
+; CHECK-NEXT:    store i32 1, ptr getelementptr inbounds nuw (i8, ptr @a, i64 8), align 4
+; CHECK-NEXT:    tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 4 dereferenceable(12) @a, i8 0, i64 12, i1 false)
+; CHECK-NEXT:    store i32 3, ptr @b, align 4
+; CHECK-NEXT:    [[TMP0:%.*]] = load i32, ptr getelementptr inbounds nuw (i8, ptr @a, i64 8), align 4
+; CHECK-NEXT:    [[CMP1_NOT:%.*]] = icmp eq i32 [[TMP0]], 0
+; CHECK-NEXT:    br i1 [[CMP1_NOT]], label %[[IF_END:.*]], label %[[IF_THEN:.*]]
+; CHECK:       [[IF_THEN]]:
+; CHECK-NEXT:    tail call void @abort()
+; CHECK-NEXT:    unreachable
+; CHECK:       [[IF_END]]:
+; CHECK-NEXT:    ret i32 0
+;
 entry:
   %retval = alloca i32, align 4
   %c = alloca [1 x i32], align 4