-mllvm -enable-machine-outliner=always Causes Compilation Timeout

[guoxin049]

i have demo like this https://godbolt.org/z/8b14dasMo, that times out when I try to build with clang.

[hstk30-hw]

Has warning:

<source>:30:1: warning: stack frame size (1099511627808) exceeds limit (4294967295) in 'bar' [-Wframe-larger-than]
   30 | bar (void)
      | ^
<source>:41:1: warning: stack frame size (1099511627808) exceeds limit (4294967295) in 'baz' [-Wframe-larger-than]
   41 | baz (long i)
      | ^

Make sure the code have the behavior which you expected.

[guoxin049]

Has warning:

<source>:30:1: warning: stack frame size (1099511627808) exceeds limit (4294967295) in 'bar' [-Wframe-larger-than]
   30 | bar (void)
      | ^
<source>:41:1: warning: stack frame size (1099511627808) exceeds limit (4294967295) in 'baz' [-Wframe-larger-than]
   41 | baz (long i)
      | ^

Make sure the code have the behavior which you expected.

Yes, the compilation is normal after I clear the alarm. However, if you do not use the -mllvm -enable-machine-outliner=always option, even with these alerts, you can compile normally.

[llvmbot]

@llvm/issue-subscribers-backend-arm

Author: gxlayer (guoxin049)

i have demo like this [https://godbolt.org/z/8b14dasMo](https://godbolt.org/z/8b14dasMo), that times out when I try to build with clang.