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| author | Cong Hou <congh@google.com> | 2015-12-05 05:00:55 +0000 |
|---|---|---|
| committer | Cong Hou <congh@google.com> | 2015-12-05 05:00:55 +0000 |
| commit | 833fe143f5eedd9c5a4e6f7f1b571840715d488a (patch) | |
| tree | b59c2e835126bccc18a9a405efe7d40abb7c852b | |
| parent | 9e51c844da9361f8ddb35f9b910468bc400d22cf (diff) | |
| download | bcm5719-llvm-833fe143f5eedd9c5a4e6f7f1b571840715d488a.tar.gz bcm5719-llvm-833fe143f5eedd9c5a4e6f7f1b571840715d488a.zip | |
Normalize successors' probabilities when building MBBs for jump table.
llvm-svn: 254837
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp | 2 | ||||
| -rw-r--r-- | llvm/test/CodeGen/X86/switch-edge-weight.ll | 2 |
2 files changed, 3 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp index 85e7e3c1bc8..867b9562019 100644 --- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp @@ -8259,12 +8259,14 @@ void SelectionDAGBuilder::lowerWorkItem(SwitchWorkListItem W, Value *Cond, JumpProb += DefaultProb / 2; FallthroughProb -= DefaultProb / 2; JumpMBB->setSuccProbability(SI, DefaultProb / 2); + JumpMBB->normalizeSuccProbs(); break; } } addSuccessorWithProb(CurMBB, Fallthrough, FallthroughProb); addSuccessorWithProb(CurMBB, JumpMBB, JumpProb); + CurMBB->normalizeSuccProbs(); // The jump table header will be inserted in our current block, do the // range check, and fall through to our fallthrough block. diff --git a/llvm/test/CodeGen/X86/switch-edge-weight.ll b/llvm/test/CodeGen/X86/switch-edge-weight.ll index 6f594868c7a..b8cb7b1280a 100644 --- a/llvm/test/CodeGen/X86/switch-edge-weight.ll +++ b/llvm/test/CodeGen/X86/switch-edge-weight.ll @@ -111,7 +111,7 @@ sw.epilog: ; BB#8 to BB#3: {11} (10) ; BB#8 to BB#4: {12} (10) ; BB#8 to BB#5: {13, 14} (20) -; CHECK: Successors according to CFG: BB#1({{[0-9a-fx/= ]+}}14.29%) BB#6({{[0-9a-fx/= ]+}}7.14%) BB#2({{[0-9a-fx/= ]+}}14.29%) BB#3({{[0-9a-fx/= ]+}}14.29%) BB#4({{[0-9a-fx/= ]+}}14.29%) BB#5({{[0-9a-fx/= ]+}}28.57%) +; CHECK: Successors according to CFG: BB#1({{[0-9a-fx/= ]+}}15.38%) BB#6({{[0-9a-fx/= ]+}}7.69%) BB#2({{[0-9a-fx/= ]+}}15.38%) BB#3({{[0-9a-fx/= ]+}}15.38%) BB#4({{[0-9a-fx/= ]+}}15.38%) BB#5({{[0-9a-fx/= ]+}}30.77%) } ; CHECK-LABEL: test3 |
