[all-commits] [llvm/llvm-project] abbbc4: Revert "Improve the effectiveness of BDCE's debug ...

[Nikita Popov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: abbbc480a152c1afbac215064f22ae07c87ed964
      https://github.com/llvm/llvm-project/commit/abbbc480a152c1afbac215064f22ae07c87ed964
  Author: Nikita Popov <nikita.ppv at gmail.com>
  Date:   2021-09-28 (Tue, 28 Sep 2021)

  Changed paths:
    M llvm/lib/Transforms/Scalar/BDCE.cpp
    M llvm/test/Transforms/Util/salvage-debuginfo.ll

  Log Message:
  -----------
  Revert "Improve the effectiveness of BDCE's debug info salvaging"

This reverts commit f6954bf80472cbfc06e39dac75a4a72120c9bd15.

This breaks the test-suite O3 build:

/home/nikic/llvm-test-suite/build-O3/tools/timeit --summary Bitcode/Benchmarks/Halide/local_laplacian/CMakeFiles/halide_local_laplacian.dir/local_laplacian.bc.o.time /home/nikic/llvm-project/build/bin/clang++  -DNDEBUG  -O3   -w -Werror=date-time -save-stats=obj -save-stats=obj -std=c++11 -MD -MT Bitcode/Benchmarks/Halide/local_laplacian/CMakeFiles/halide_local_laplacian.dir/local_laplacian.bc.o -MF Bitcode/Benchmarks/Halide/local_laplacian/CMakeFiles/halide_local_laplacian.dir/local_laplacian.bc.o.d -o Bitcode/Benchmarks/Halide/local_laplacian/CMakeFiles/halide_local_laplacian.dir/local_laplacian.bc.o -c ../Bitcode/Benchmarks/Halide/local_laplacian/local_laplacian.bc
While deleting: i64 %
Use still stuck around after Def is destroyed:  %12620 = mul i64 %12619, <badref>
clang++: /home/nikic/llvm-project/llvm/lib/IR/Value.cpp:103: llvm::Value::~Value(): Assertion `materialized_use_empty() && "Uses remain when a value is destroyed!"' failed.