[llvm-bugs] [Bug 33984] New: [LTO] missing file name in diagnostic message about inline asm

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=33984

            Bug ID: 33984
           Summary: [LTO] missing file name in diagnostic message about
                    inline asm
           Product: new-bugs
           Version: unspecified
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: weimingz at codeaurora.org
                CC: llvm-bugs at lists.llvm.org

For example, given a.c:

int main(int argc, char**argv) {
__asm__("bad");

}

Without LTO, the message is correct:

a.c:2:9: error: invalid instruction, did you mean: adc, add, adr, and, b?
__asm__("bad");
        ^
<inline asm>:1:2: note: instantiated into assembly here
        bad
        ^~~
1 error generated.


With -flto, it becomes:
<inline asm>:1:2: error: invalid instruction, did you mean: adc, add, adr, and,
b?
        bad
        ^
LLVM ERROR: Error parsing inline asm

Not that the filename of the source is missing. If there're multiple objs,
there is no way to tell which file's inline asm is bad.

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