[llvm-bugs] [Bug 91937] [GlobalISel] CSEMIRBuilder Performance

[LLVM Bugs via llvm-bugs]

Issue	91937
Summary	[GlobalISel] CSEMIRBuilder Performance
Labels	llvm:globalisel
Assignees
Reporter	Pierre-vh

    Opening this issue to track performance improvement ideas for CSEMIRBuilder in GlobalISel.

I did some profiling and I found that CSEMIRBuilder takes a non-negligible amount of time, about 2%.
0.8% of that is MachineIRBuilder::buildInstr, so that means CSEMIRBuilder adds a 150% overhead to a normal MIR builder.

![image](https://github.com/llvm/llvm-project/assets/29600849/f3463047-ba7b-466c-96c3-05cd16453033)

_______________________________________________
llvm-bugs mailing list
llvm-bugs@lists.llvm.org
https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-bugs