[llvm-bugs] [Bug 40656] New: [coroutines] heap allocation regression between clang 6 and clang 7

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=40656

            Bug ID: 40656
           Summary: [coroutines] heap allocation regression between clang
                    6 and clang 7
           Product: libraries
           Version: 7.0
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Interprocedural Optimizations
          Assignee: unassignedbugs at nondot.org
          Reporter: gornishanov at gmail.com
                CC: llvm-bugs at lists.llvm.org

Created attachment 21448
  --> https://bugs.llvm.org/attachment.cgi?id=21448&action=edit
Halo is not triggered on clang 7 and trunk. Works as expected on clang 6

Halo is not triggered on the attached example on clang 7 and trunk. Works as
expected on clang 6.

https://godbolt.org/z/y4xoFC

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