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Hi Matthias, Sorry for the late reply. Yes, you are correct, I do have optnone attribute on my function. I did pass -O0 to the tools. For your information, my invocations are as below: clang --target=mips-unknown-linux -mips32 test.c -emit-llvm -S llc -O0 -march=mips -mcpu=mips32 test.ll -o test.s Based on the generated .ll file, there is optnone attribute on the function, i

...ke the clang as -O1 and so on as it will optimize my code and the generated .ll file will contain nothing other than the prologue and epilogue code. Is there any information i can provide you so that we can discuss the issue further? Chuan. ________________________________ From: jin chuan see <jinchuansee at hotmail.com<mailto:jinchuansee at hotmail.com>> Sent: Monday, September 11, 2017 9:57 AM To: Matthias Braun Cc: llvm-dev at lists.llvm.org<mailto:llvm-dev at lists.llvm.org> Subject: Re: [llvm-dev] Live Register Spilling Hi Matthias, Sorry for the late reply. Yes, you are co...

...invoke the clang as -O1 and so on as it will optimize my code and the generated .ll file will contain nothing other than the prologue and epilogue code. > Is there any information i can provide you so that we can discuss the issue further? > > Chuan. > > From: jin chuan see <jinchuansee at hotmail.com <mailto:jinchuansee at hotmail.com>> > Sent: Monday, September 11, 2017 9:57 AM > To: Matthias Braun > Cc: llvm-dev at lists.llvm.org <mailto:llvm-dev at lists.llvm.org> > Subject: Re: [llvm-dev] Live Register Spilling > > Hi Matthias, > > S...