[llvm-commits] [llvm] r71410 - /llvm/trunk/lib/CodeGen/AsmPrinter/DwarfWriter.cpp

[Duncan Sands]

Hi Dale,

>>> This doesn't take care of all of the problems with debug info for
>>> inlined
>>> functions, but it's a step in the right direction. For one thing,
>>> llvm-gcc
>>> generates wrong IR (it's missing some llvm.dbg intrinsics at the
>>> point where the
>>> function's inlined) for this example:
>>>
>>> #include <stdio.h>
>>> static __inline__ __attribute__((always_inline))  int bar(int x)
>>> { return 4; }
>>> void foo() {
>>> long long b = 1;
>>> int Y = bar(4);
>>> printf("%d\n", Y);
>>> }
>> The body for "bar" is gone by the time llvm_asm_file_end is called: I
>> think the tree inliner is still being used???
> 
> Yeah, looks like it's not disabled fully at -O0 (no-unit-at-a-time  
> seems to be the relevant setting).  A significantly different high- 
> level code path, implemented by having  if(flag_unit_at_a_time)   all  
> over the place in common code....

yes, the cgraph stuff is icky.  I've fixed the problem by having all
functions be classified as uninlineable.

Ciao,

Duncan.