https://bugs.llvm.org/show_bug.cgi?id=33845
Bug ID: 33845
Summary: clang calls __gnu_mcount_nc with the wrong calling
convention
Product: new-bugs
Version: unspecified
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: new bugs
Assignee: unassignedb...@nondot.org
Reporter: efrie...@codeaurora.org
CC: compn...@compnerd.org, llvm-bugs@lists.llvm.org,
renato.go...@linaro.org
__gnu_mcount_nc works differently from _mcount. The caller is supposed to pass
its return address on the stack ("push {lr}"), and the stack pointer is
callee-pop. This means that passing "-pg -meabi gnu" to clang will generate
code which corrupts the stack pointer.
Apparently nobody tested r265899.
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