Please have a look at PR60438

[lin zuojian]

Hi,
    I have found a crash when compiling,and have narrowed the bug scope
    in the csa pass.But I am not quite familar with that.Please help.
    Cause: 
           if (hasRelativeWidth || hasRelativeHeight)
                 true       false
                 /              \
                /                \ 
               /                  \
 ...                            ...
call availableWidth()               call size() this function returns a 
                                    structure,which matches "call_pop"  
.cfa_offset 96                  .cfa_offset 92
             \                   push edx (should has a REG_ARGS_SIZE 16 here,
              \                  but csa eliminates it)
               \                (inlined functions are expanded here)
                \                   /
                 \                 /
                  \               /
                  (should all be cfa_offset 96)
                     add 16,%esp
As the cfg above described,both branches should be end with cfa offset
96,but one branch is end with 92.
That will case assertion failure in dwarf2cfi.c:2339,which asserts that
all the branches should have the same cfa offset when coming to the
joint.

--
Regards
lin zuojian