2020-04-01 06:25:01 +08:00
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# REQUIRES: x86
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[lld][COFF][ELF][WebAssembly] Replace --[no-]threads /threads[:no] with --threads={1,2,...} /threads:{1,2,...}
--no-threads is a name copied from gold.
gold has --no-thread, --thread-count and several other --thread-count-*.
There are needs to customize the number of threads (running several lld
processes concurrently or customizing the number of LTO threads).
Having a single --threads=N is a straightforward replacement of gold's
--no-threads + --thread-count.
--no-threads is used rarely. So just delete --no-threads instead of
keeping it for compatibility for a while.
If --threads= is specified (ELF,wasm; COFF /threads: is similar),
--thinlto-jobs= defaults to --threads=,
otherwise all available hardware threads are used.
There is currently no way to override a --threads={1,2,...}. It is still
a debate whether we should use --threads=all.
Reviewed By: rnk, aganea
Differential Revision: https://reviews.llvm.org/D76885
2020-03-18 03:40:19 +08:00
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# RUN: llvm-mc -filetype=obj -triple=x86_64 %s -o %t.o
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## A positive integer is allowed.
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# RUN: ld.lld --threads=1 %t.o -o /dev/null
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# RUN: ld.lld --threads=2 %t.o -o /dev/null
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# RUN: not ld.lld --threads=all %t.o -o /dev/null 2>&1 | FileCheck %s -DN=all
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# RUN: not ld.lld --threads=0 %t.o -o /dev/null 2>&1 | FileCheck %s -DN=0
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# RUN: not ld.lld --threads=-1 %t.o -o /dev/null 2>&1 | FileCheck %s -DN=-1
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# CHECK: error: --threads: expected a positive integer, but got '[[N]]'
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