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author | Justin Bogner <mail@justinbogner.com> | 2014-01-13 21:24:18 +0000 |
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committer | Justin Bogner <mail@justinbogner.com> | 2014-01-13 21:24:18 +0000 |
commit | d1361b32e7934a5cfaffffa2bad75c25bba08e88 (patch) | |
tree | 1a17e8346d776363b5673975fe78576b621f0ac9 /lib/CodeGen/CodeGenPGO.h | |
parent | f1c6bf3d4bdcc6f5ff0e4218db985b65aca782d3 (diff) |
CodeGen: Introduce CodeGenPGO::setCurrentRegionUnreachable
There are a number of places where we do PGO.setCurrentRegionCount(0)
directly after an unconditional branch. Give this operation a name so
that it's clearer why we're doing this.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@199138 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/CodeGenPGO.h')
-rw-r--r-- | lib/CodeGen/CodeGenPGO.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/CodeGen/CodeGenPGO.h b/lib/CodeGen/CodeGenPGO.h index 0a0699067b..a459e42d29 100644 --- a/lib/CodeGen/CodeGenPGO.h +++ b/lib/CodeGen/CodeGenPGO.h @@ -74,6 +74,10 @@ public: /// of changes to the most recent counter from control flow and non-local /// exits. void setCurrentRegionCount(uint64_t Count) { CurrentRegionCount = Count; } + /// Indicate that the current region is never reached, and thus should have a + /// counter value of zero. This is important so that subsequent regions can + /// correctly track their parent counts. + void setCurrentRegionUnreachable() { setCurrentRegionCount(0); } /// Calculate branch weights appropriate for PGO data llvm::MDNode *createBranchWeights(uint64_t TrueCount, uint64_t FalseCount); |