[LLVMbugs] [Bug 19243] New: Implement __builtin_stack_pointer

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=19243

            Bug ID: 19243
           Summary: Implement __builtin_stack_pointer
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Common Code Generator Code
          Assignee: unassignedbugs at nondot.org
          Reporter: renato.golin at linaro.org
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

A problem found in the kernel and explained here:

http://lists.cs.uiuc.edu/pipermail/llvmdev/2013-October/066325.html

Hints at a new builtin to return the stack pointer register and avoid
constructs like:

register unsigned long current_stack_pointer asm("esp");

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