From 6f833c6fe13223f80f5147138992a0ca19206d6d Mon Sep 17 00:00:00 2001 From: Jinsong Ji Date: Tue, 20 Aug 2019 20:45:16 +0000 Subject: [PATCH] [llvm-extract] Update the help message for group extraction feature Summary: https://reviews.llvm.org/D60973 exposed the group extraction feature of the BlockExtractor to llvm-extract. However, the help message was not updated, so users might not be able to know how to use this feature without looking into history/commits. This patch just update the help message to show how to use this group extraction feature. Reviewers: qcolombet, volkan Reviewed By: qcolombet Subscribers: llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D66438 llvm-svn: 369438 --- llvm/tools/llvm-extract/llvm-extract.cpp | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/llvm/tools/llvm-extract/llvm-extract.cpp b/llvm/tools/llvm-extract/llvm-extract.cpp index b74b76e..dddc0d9 100644 --- a/llvm/tools/llvm-extract/llvm-extract.cpp +++ b/llvm/tools/llvm-extract/llvm-extract.cpp @@ -74,8 +74,18 @@ static cl::list // ExtractBlocks - The blocks to extract from the module. static cl::list ExtractBlocks( - "bb", cl::desc("Specify pairs to extract"), - cl::ZeroOrMore, cl::value_desc("function:bb"), cl::cat(ExtractCat)); + "bb", + cl::desc( + "Specify pairs to extract.\n" + "Each pair will create a function.\n" + "If multiple basic blocks are specified in one pair,\n" + "the first block in the sequence should dominate the rest.\n" + "eg:\n" + " --bb=f:bb1;bb2 will extract one function with both bb1 and bb2;\n" + " --bb=f:bb1 --bb=f:bb2 will extract two functions, one with bb1, one " + "with bb2."), + cl::ZeroOrMore, cl::value_desc("function:bb1[;bb2...]"), + cl::cat(ExtractCat)); // ExtractAlias - The alias to extract from the module. static cl::list -- 2.7.4