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> Has anybody debugged LLVM IR with GDB? I'm using dragonegg to transform C > into IR, then applying my optimizations. Passing "-g" to dragonegg doesn't > seem to work since it generates debug info for the C code, not the IR. I > really need GDB (lli doesn't solve my problems) in order to debug > multi-threaded and multi-process MPI code. > > More

...Another interesting issue is how to coexist with any existing debug metadata, which can be useful for simultaneously debugging an IR transform inline with the C source for instrumentation-style passes like SAFECode, ASan/TSan. Quick Example: (gdb) break main Breakpoint 1 at 0x4010b1: file /home/wdietz2/magic/test/unit/test_loop.c, line 9. (gdb) r Starting program: /home/wdietz2/llvm/32-obj-make/projects/magic/test/Output/test_loop Breakpoint 1, main (argc=<value optimized out>, argv=<value optimized out>) at /home/wdietz2/magic/test/unit/test_loop.c:9 9 unsigned k = 0; Missin...

Hi all, Has anybody debugged LLVM IR with GDB? I'm using dragonegg to transform C into IR, then applying my optimizations. Passing "-g" to dragonegg doesn't seem to work since it generates debug info for the C code, not the IR. I really need GDB (lli doesn't solve my problems) in order to debug multi-threaded and multi-process MPI code. More clearly, if I have a file

...9;... 0xd9f7400 Executing Pass 'Loop Pass Manager' on Function 'freetree'... 0xd9bfa70 Executing Pass 'Canonicalize natural loops' on Loop 'bb2'... 0xd9bfa70 Executing Pass 'Loop Invariant Code Motion' on Loop 'bb2'... opt: /home/vadve/wdietz2/llvm27/llvm/projects/poolalloc/lib/DSA/DataStructureAA.cpp:203: virtual llvm::AliasAnalysis::ModRefResult<unnamed>::DSAA::getModRefInfo(llvm::CallSite, llvm::Value*, unsigned int): Assertion `valid && "AA invalidated but then queried?!"' failed. Note that "DSAA&qu...

...Executing Pass 'Loop Pass Manager' on Function 'freetree'... > 0xd9bfa70 Executing Pass 'Canonicalize natural loops' on Loop 'bb2'... > 0xd9bfa70 Executing Pass 'Loop Invariant Code Motion' on Loop 'bb2'... > opt: /home/vadve/wdietz2/llvm27/llvm/projects/poolalloc/lib/DSA/DataStructureAA.cpp:203: > virtual llvm::AliasAnalysis::ModRefResult<unnamed>::DSAA::getModRefInfo(llvm::CallSite, > llvm::Value*, unsigned int): Assertion `valid && "AA invalidated but > then queried?!"' failed. > >...

Hi LLVM’ers! We are hosting a BoF at this year's Dev Meeting on a subject we hope will be of interest to some (many?) of you: shipping software (entirely) as LLVM IR. You can find our proposal in the meeting schedule online: https://llvmdevelopersmeetingbay2016.sched.org/event/8Yzq/shipping-software-as-llvm-ir The BoF is scheduled to last 45 minutes, which will go by very quickly! To make