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2c45043415
Before: ``` ld.lld: error: undefined symbol: f() >>> referenced by test.cc:3 >>> /var/folders/c5/8d7sdn1x2mg92mj0rndghhdr0000gn/T/test-9c0808.o:(g()) ld.lld: error: undefined symbol: f() >>> referenced by test.cc:4 >>> /var/folders/c5/8d7sdn1x2mg92mj0rndghhdr0000gn/T/test-9c0808.o:(h()) ld.lld: error: undefined symbol: f() >>> referenced by test.cc:5 >>> /var/folders/c5/8d7sdn1x2mg92mj0rndghhdr0000gn/T/test-9c0808.o:(j()) ld.lld: error: undefined symbol: k() >>> referenced by test.cc:5 >>> /var/folders/c5/8d7sdn1x2mg92mj0rndghhdr0000gn/T/test-9c0808.o:(j()) ld.lld: error: undefined symbol: f() >>> referenced by test2.cc:2 >>> /var/folders/c5/8d7sdn1x2mg92mj0rndghhdr0000gn/T/test2-07b391.o:(asdf()) clang: error: linker command failed with exit code 1 (use -v to see invocation) ``` Now: ``` ld.lld: error: undefined symbol: f() >>> referenced by test.cc:3 >>> /var/folders/c5/8d7sdn1x2mg92mj0rndghhdr0000gn/T/test-0e07ba.o:(g()) >>> referenced by test.cc:4 >>> /var/folders/c5/8d7sdn1x2mg92mj0rndghhdr0000gn/T/test-0e07ba.o:(h()) >>> referenced by test.cc:5 >>> /var/folders/c5/8d7sdn1x2mg92mj0rndghhdr0000gn/T/test-0e07ba.o:(j()) >>> referenced by test2.cc:2 >>> /var/folders/c5/8d7sdn1x2mg92mj0rndghhdr0000gn/T/test2-6bdb24.o:(asdf()) ld.lld: error: undefined symbol: k() >>> referenced by test.cc:5 >>> /var/folders/c5/8d7sdn1x2mg92mj0rndghhdr0000gn/T/test-0e07ba.o:(j()) clang: error: linker command failed with exit code 1 (use -v to see invocation) ``` If there are more than 10 references to an undefined symbol, only the first 10 are printed. Fixes PR42260. Differential Revision: https://reviews.llvm.org/D63344 llvm-svn: 363962
LLVM Linker (lld)
This directory and its subdirectories contain source code for the LLVM Linker, a modular cross platform linker which is built as part of the LLVM compiler infrastructure project.
lld is open source software. You may freely distribute it under the terms of the license agreement found in LICENSE.txt.
Benchmarking
In order to make sure various developers can evaluate patches over the same tests, we create a collection of self contained programs.
It is hosted at https://s3-us-west-2.amazonaws.com/linker-tests/lld-speed-test.tar.xz
The current sha256 is 10eec685463d5a8bbf08d77f4ca96282161d396c65bd97dc99dbde644a31610f.