[llvm-bugs] [Bug 46835] New: ICF merges functions with different exception handling

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=46835

            Bug ID: 46835
           Summary: ICF merges functions with different exception handling
           Product: lld
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: ELF
          Assignee: unassignedbugs at nondot.org
          Reporter: rafael at espindo.la
                CC: llvm-bugs at lists.llvm.org, smithp352 at googlemail.com

I just hit this trying to use ICF in scylla:

$ cat test.cc
void foo();
void bar() {
    try {
        foo();
    } catch (int) {
    }
}
void zed() {
    try {
        foo();
    } catch (float) {
    }
}

$ g++ -c test.cc -Os -ffunction-sections -fPIC
$ ld.lld -shared test.o -o test.so --icf=all --print-icf-sections
selected section test.o:(.text._Z3barv)
  removing identical section test.o:(.text._Z3zedv)

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