diff options
author | Diego Novillo <dnovillo@google.com> | 2015-05-13 15:13:45 +0000 |
---|---|---|
committer | Diego Novillo <dnovillo@google.com> | 2015-05-13 15:13:45 +0000 |
commit | a3bccceda7ca4d8e8fe8541675b594b4b7ba4148 (patch) | |
tree | 4b488412cdbfe7573f1c762447a1f08c38bd94e5 /lib/IR/MDBuilder.cpp | |
parent | dcc57103b82525a35a9e7acc0109d20a83b2b0a0 (diff) |
Add function entry count metadata.
Summary:
This adds three Function methods to handle function entry counts:
setEntryCount() and getEntryCount().
Entry counts are stored under the MD_prof metadata node with the name
"function_entry_count". They are unsigned 64 bit values set by profilers
(instrumentation and sample profiler changes coming up).
Added documentation for new profile metadata and tests.
Reviewers: dexonsmith, bogner
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D9628
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237260 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/IR/MDBuilder.cpp')
-rw-r--r-- | lib/IR/MDBuilder.cpp | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/lib/IR/MDBuilder.cpp b/lib/IR/MDBuilder.cpp index a9010114044..354592df4c9 100644 --- a/lib/IR/MDBuilder.cpp +++ b/lib/IR/MDBuilder.cpp @@ -53,6 +53,16 @@ MDNode *MDBuilder::createBranchWeights(ArrayRef<uint32_t> Weights) { return MDNode::get(Context, Vals); } +MDNode *MDBuilder::createFunctionEntryCount(uint64_t Count) { + SmallVector<Metadata *, 2> Vals(2); + Vals[0] = createString("function_entry_count"); + + Type *Int64Ty = Type::getInt64Ty(Context); + Vals[1] = createConstant(ConstantInt::get(Int64Ty, Count)); + + return MDNode::get(Context, Vals); +} + MDNode *MDBuilder::createRange(const APInt &Lo, const APInt &Hi) { assert(Lo.getBitWidth() == Hi.getBitWidth() && "Mismatched bitwidths!"); |