对-fno-omit-frame-pointer 和-fsanitize 选项的解释 1. -fno-omit-frame-pointer 选项的作用 -fno-omit-frame-pointer 是GCC 编译器的一个选项,用于指示编译器不要省略帧指针(frame pointer)。在默认情况下,为了优化性能,编译器可能会省略帧指针,因为这样可以减少寄存器的使用,提高程序的运行速度。但是,在某些情...
omit-frame-pointer 开启该选项,主要是用于去掉所有函数SFP(Stack Frame Pointer)的,即在函数调用时不保存栈帧指针SFP,代价是不能通过backtrace进行调试根据堆栈信息了。通过去掉SFP,可以提高程序运行速度,达到优化程序的目的。如果要打开栈指针,使用-fno-omit-frame-pointer。 另外一个类似选项-fomit-leaf-frame-pointer...
some implementation notes: https://gitlab.archlinux.org/daandemeyer/rfcs/-/blob/fp/rfcs/0026-fno-omit-frame-pointer.rst tl;dr: profiling stuff using dwarf backtraces is often quite unreasonable, https://rwmj.wordpress.com/2023/02/14/frame-pointers-vs-dwarf-my-verdict/ is quite funny. havi...
哪些情况下编译时候应该使用 -fno-omit-frame-pointer？一般在你需要对程序debug的时候，或者用AddressSanit...
Will RHEL enable the -fno-omit-frame-pointer compiler option? Frame pointers were a concept introduced to help performance when the register count was still quite low. In most modern systems such as x86-64 there are enough general purpose registers that frame pointers make almost no performance ...
Based on the reasoning in https://fedoraproject.org/wiki/Changes/fno-omit-frame-pointer, I propose adding these two flags to the default (and do so for GCC in the respective feedstock). As far as my understanding goes, this should not change the ABI and individual packages are free to ...
#IBGBA7:[OHOS aarch64][Attribute] Support function attribute omit-frame-pointer and general-regs-only Reason (Purpose, Solved Problem) To support build source code migrated from gcc, which use function attribute omit-frame-pointer and general-regs-only ...
【需求价值】: To support build source code migrated from gcc, which use function attribute omit-frame-pointer and general-regs-only 【需求描述】: Support function attribute omit-frame-pointer and general-regs-only. Refer to:https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html ...
4. 若线程只有一次sleep调用,不保证一定抓取到,抓到的前提是工具在程序在sleep前已经ready了。如果程序循环sleep,则更容易被抓到5. -fno-omit-frame-pointer 的作用待验证6. 参考程序:链接以上在 4.19.36 上验证。在个人fedora 5.15.16上还是不能显示完整user stack...
该说明的大意就是如果函数不需要frame pointer,就不要将frame pointer保留在寄存器中。当打开优化选项:-O,-O2,-O3,-Os时或者对某些平台不打开任何优化选项时,-fomit-frame-pointer会被默认打开,可以通过设置-fno-omit-frame-pointer关闭-fomit-frame-pointer。