[llvm-bugs] [Bug 31348] New: Write tests for callee saved register handling

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=31348

            Bug ID: 31348
           Summary: Write tests for callee saved register handling
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: Backend: AVR
          Assignee: unassignedbugs at nondot.org
          Reporter: dylanmckay34 at gmail.com
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

We should write tests to ensure that when we clobber the callee saved registers
(R2–R17, R28, R29), they are always restored in the epilogue.

The full calling convention is described here:

https://gcc.gnu.org/wiki/avr-gcc

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