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On Sat, Sep 20, 2008 at 12:12 PM, madiyaan <ahmadsharif at hotmail.com> wrote: > Hello: > > I am new to llvm. I am looking for an example somewhere, or a > walkthrough/guide on how to do runtime optimization using llvm. Ideally, I > would like to: > > 1. Compile the program from C to LLVM or native with LLVM information > embe...

Hello: I am new to llvm. I am looking for an example somewhere, or a walkthrough/guide on how to do runtime optimization using llvm. Ideally, I would like to: 1. Compile the program from C to LLVM or native with LLVM information embedded in the binary. 2. Run the binary under LLVM's interpreter, and profile the data. I hope LLVM has support for all this, and I don't have to insert my own

...{ entry: call void @foo() ret i32 0 } define linkonce_odr void @foo() nounwind alwaysinline { entry: %tmp = load i32* @a ; <i32> [#uses=1] %inc = add i32 %tmp, 1 ; <i32> [#uses=1] store i32 %inc, i32* @a ret void } Javier On Thu, 17 Sep 2009 09:45:14 -0700 (PDT), madiyaan <ahmadsharif at hotmail.com> wrote: > Thanks for your message. However, even with using version 2.5 of llvm the > function is not inlined. Can you try this with your llvm with the same opt > flags, which are as follows? > > -O3 -debug-only=inline -mem2reg > > If it does work for you, c...

Thanks for your message. However, even with using version 2.5 of llvm the function is not inlined. Can you try this with your llvm with the same opt flags, which are as follows? -O3 -debug-only=inline -mem2reg If it does work for you, can you tell me the exact flags you used for clang or llvm-gcc to produce the .bc file and the exact flags you specified when you invoked opt? Does the inlining

Hello: I am following the example code in BasicBlockPlacement.cpp. That transformation relies on basic block execution frequencies that have been read from a profile file. This is how it loads the profile data: 1. In getAnalysisUsage, it calls addRequired<ProfileInfo>(), and 2. In the runOnFunction, it calls getAnalysis<ProfileInfo>() which returns a ProfileInfo object pointer.

Hello: I have been able to successfully add a profiling pass to my PassManager. I now want to dump this profile information arbitrary (like maybe after 1 second of running the program). The problem is that the profile functions are in a separate library which is loaded dynamically. I cannot call: EdgeProfAtExitHandler(); directly because of linker problems (EdgeProfAtExitHandler() is

I want to be able to do two things with LLVM (both just before code emission): 1. Insert a MachineBasicBlock just before a MachineBasicBlock. There is a function called AddPredecessor(). However, the comment says that it does not update the actual CFG. I want to redirect all CFG edges that are incoming to this MachineBasicBlock to the new one I create, and add just one outgoing edge (no branch)

I have the following code: static inline void foo() __attribute((always_inline)); int a; static inline void foo() { a++; } int main(int argc, char *argv[]) { foo(); return 0; } However, the code generated by llvm 2.4 toolchain does not inline this function. opt retains the function call. Here is the output when I try to compile with -debug-only=inline: