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author | Teresa Johnson <tejohnson@google.com> | 2015-10-04 14:33:43 +0000 |
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committer | Teresa Johnson <tejohnson@google.com> | 2015-10-04 14:33:43 +0000 |
commit | b97baa5fe54954247e143e702201364284b54345 (patch) | |
tree | f9a0439d30b6361bc32da8a88e5d343cfb0c1bb9 /tools/llvm-as | |
parent | ea978bb5631cd8dce5af87a2678750936a90d40c (diff) |
Support for function summary index bitcode sections and files.
Summary:
The bitcode format is described in this document:
https://drive.google.com/file/d/0B036uwnWM6RWdnBLakxmeDdOeXc/view
For more info on ThinLTO see:
https://sites.google.com/site/llvmthinlto
The first customer is ThinLTO, however the data structures are designed
and named more generally based on prior feedback. There are a few
comments regarding how certain interfaces are used by ThinLTO, and the
options added here to gold currently have ThinLTO-specific names as the
behavior they provoke is currently ThinLTO-specific.
This patch includes support for generating per-module function indexes,
the combined index file via the gold plugin, and several tests
(more are included with the associated clang patch D11908).
Reviewers: dexonsmith, davidxl, joker.eph
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D13107
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@249270 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'tools/llvm-as')
-rw-r--r-- | tools/llvm-as/llvm-as.cpp | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/tools/llvm-as/llvm-as.cpp b/tools/llvm-as/llvm-as.cpp index 4455d24fb60..d4e4d8d7107 100644 --- a/tools/llvm-as/llvm-as.cpp +++ b/tools/llvm-as/llvm-as.cpp @@ -45,6 +45,10 @@ static cl::opt<bool> DisableOutput("disable-output", cl::desc("Disable output"), cl::init(false)); static cl::opt<bool> +EmitFunctionSummary("function-summary", cl::desc("Emit function summary index"), + cl::init(false)); + +static cl::opt<bool> DumpAsm("d", cl::desc("Print assembly as parsed"), cl::Hidden); static cl::opt<bool> @@ -77,7 +81,8 @@ static void WriteOutputFile(const Module *M) { } if (Force || !CheckBitcodeOutputToConsole(Out->os(), true)) - WriteBitcodeToFile(M, Out->os(), PreserveBitcodeUseListOrder); + WriteBitcodeToFile(M, Out->os(), PreserveBitcodeUseListOrder, + EmitFunctionSummary); // Declare success. Out->keep(); |