Internal compiler error in SelectionDAGBuild.cpp

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1

Hello,

While I was trying to cross-compile Linux OMAP kernel with llvm, I have the following error message.

CC arch/arm/kernel/traps.o

cc1: /home/wonjeon/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp:5388: void llvm::SelectionDAGLowering::visitInlineAsm(llvm::CallSite): Assertion `(OpInfo.ConstraintType == TargetLowering::C_RegisterClass || OpInfo.ConstraintType == TargetLowering::C_Register) && “Unknown constraint type!”’ failed.

arch/arm/kernel/traps.c:748: internal compiler error: Aborted

Please submit a full bug report,

with preprocessed source if appropriate.

See URL:http://llvm.org/bugs/ for instructions

Is there any related bug filed or fixed? Thanks in advance.

Won

2

There’s not enough information in your message to know what the problem is, but I’m not aware of anything offhand. Please file a bug report with a reproducible testcase and I’ll take a look at it.

3

Hi Won,

It's hard to say. Could you prepare a small testcase (a .bc file for
example) and file a PR?

Thanks!
-bw

4

Hello

cc1:
/home/wonjeon/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp:5388: void
llvm::SelectionDAGLowering::visitInlineAsm(llvm::CallSite): Assertion
`(OpInfo.ConstraintType == TargetLowering::C_RegisterClass ||
OpInfo.ConstraintType == TargetLowering::C_Register) && "Unknown constraint
type!"' failed.

Looks like inline asm problem

5

Bug #4521 has been filed. traps.c has been also attached.

Thanks,
Won

6

Thanks for the bug report. The attached file isn’t helpful for reproducing the problem. I don’t have all the header files that are included, so I can’t just try to run it through my version of llvm-gcc and see what happens. At a minimum, please attach the preprocessed source file along with the complete llvm-gcc command line that you used to compile it. That would probably be good enough, but since I don’t have a copy of llvm-gcc configured for OMAP Linux, it would be much better if you could submit the LLVM bitcode file. Have a look at the following doc on the LLVM website:

http://www.llvm.org/docs/HowToSubmitABug.html

Thanks!

7

traps.i has been attached. I used ‘make CROSS_COMPILE=llvm-arm-’ to compile the kernel with default configurations provided by kernel package If you need more information, please let me know.

Thanks,
Won

8

Yes, more info, please. As I mentioned before, we need the llvm-gcc command line. The make command line is useless to me because I don't have the makefile. I'll take a look at traps.i and see if there's something obvious, but please send the llvm-gcc command line.