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| author | Manman Ren <manman.ren@gmail.com> | 2014-01-29 23:18:47 +0000 |
|---|---|---|
| committer | Manman Ren <manman.ren@gmail.com> | 2014-01-29 23:18:47 +0000 |
| commit | ea120b6bb52cd796d3879353aeec214599bd9b96 (patch) | |
| tree | 29f1635a128d1d316e168c692c40d4cc3660b38f /include | |
| parent | 65a12969f9c8610e304efc096f94c955fc94abf2 (diff) | |
| download | llvm-ea120b6bb52cd796d3879353aeec214599bd9b96.tar.gz llvm-ea120b6bb52cd796d3879353aeec214599bd9b96.tar.bz2 llvm-ea120b6bb52cd796d3879353aeec214599bd9b96.tar.xz | |
PGO branch weight: update edge weights in IfConverter.
This commit only handles IfConvertTriangle. To update edge weights
of a successor, one interface is added to MachineBasicBlock:
/// Set successor weight of a given iterator.
setSuccWeight(succ_iterator I, uint32_t weight)
An existing testing case test/CodeGen/Thumb2/v8_IT_5.ll is updated,
since we now correctly update the edge weights, the cold block
is placed at the end of the function and we jump to the cold block.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200428 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include')
| -rw-r--r-- | include/llvm/CodeGen/MachineBasicBlock.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/llvm/CodeGen/MachineBasicBlock.h b/include/llvm/CodeGen/MachineBasicBlock.h index e196419e90..b2dac195fd 100644 --- a/include/llvm/CodeGen/MachineBasicBlock.h +++ b/include/llvm/CodeGen/MachineBasicBlock.h @@ -363,6 +363,9 @@ public: /// void addSuccessor(MachineBasicBlock *succ, uint32_t weight = 0); + /// Set successor weight of a given iterator. + void setSuccWeight(succ_iterator I, uint32_t weight); + /// removeSuccessor - Remove successor from the successors list of this /// MachineBasicBlock. The Predecessors list of succ is automatically updated. /// |