yunlian added a comment.
This error happens when I try to triage a thinLTO failure on ARM.
Initially I got some error like
Instruction does not dominate all uses!
%205 = bitcast i1 (%"class.blink::LayoutObject"*)** %194 to i8*, !dbg !51180
%200 = getelementptr i8, i8* %205, i32 ptrtoint (i8*
@__typeid__ZTSN5blink12LayoutObjectE_100_byte to i32), !dbg !51170
LLVM ERROR: Broken function found, compilation aborted!
clang-5.0: error: linker command failed with exit code 1 (use -v to see
invocation)
I then used distributed thinLTO to try to find a reduced test case.
I use -Wl,-plugin-opt,thinlto-index-only=file to get the index file for each
bite code and I
run
$cmd -fthinlto-index=${obj}.thinlto.bc -x ir ${obj} -o a.o -c
to get the error shown in this change.
https://reviews.llvm.org/D35081
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