[llvm-bugs] [Bug 30797] New: clear_cache doesn't compile in Debug mode

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=30797

            Bug ID: 30797
           Summary: clear_cache doesn't compile in Debug mode
           Product: compiler-rt
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: compiler-rt
          Assignee: unassignedbugs at nondot.org
          Reporter: renato.golin at linaro.org
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

clear_cache.c fails to build on ARM in debug mode because of the line:

const register int syscall_nr __asm("r7") = __ARM_NR_cacheflush;

with the error:

error: r7 cannot be used in asm here

It passes on Release mode because -O2/3 implies -fmoit-frame-pointer.

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