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2013 Oct 08
2
[LLVMdev] What makes register allocation expensive?
Compile times increased by roughly 20X after upgrading the Radian compiler project from LLVM 3.1 to 3.3. I am curious whether this is considered normal. If it is not, I would appreciate some help figuring out what it is about the Radian compiler's output which is causing LLVM to spend so much time compiling such small programs. I recorded these times with Apple's Xcode Instruments