[llvm-bugs] [Bug 38229] New: preserve_all calling convention is broken on AArch64

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=38229

            Bug ID: 38229
           Summary: preserve_all calling convention is broken on AArch64
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: -New Bugs
          Assignee: unassignedclangbugs at nondot.org
          Reporter: manojgupta at google.com
                CC: efriedma at codeaurora.org, jyknight at google.com,
                    llvm-bugs at lists.llvm.org, manojgupta at google.com,
                    ndesaulniers at google.com

$ cat test.c 
void __attribute__((preserve_all)) foo(void *ptr) { }

$ clang -c test.c -> compiles for x86_64
$ clang -c -target aarch64-unknown-linux-gnu

fatal error: error in backend: Unsupported calling convention.

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