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| author | Sebastian Pop <spop@codeaurora.org> | 2012-09-25 20:35:36 +0000 |
|---|---|---|
| committer | Sebastian Pop <spop@codeaurora.org> | 2012-09-25 20:35:36 +0000 |
| commit | 1a37d7e807ad6cc71fe3cffdf6674644c46a60eb (patch) | |
| tree | b95e8a119512fd8dd3efa9cad89421097262a380 /lib/CodeGen/SelectionDAG/TargetLowering.cpp | |
| parent | 442ffc346f942329bebdccdf54741713646e20ef (diff) | |
TargetLowering interface to set/get minimum block entries for jump tables.
Provide interface in TargetLowering to set or get the minimum number of basic
blocks whereby jump tables are generated for switch statements rather than an
if sequence.
getMinimumJumpTableEntries() defaults to 4.
setMinimumJumpTableEntries() allows target configuration.
This patch changes the default for the Hexagon architecture to 5
as it improves performance on some benchmarks.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164628 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/SelectionDAG/TargetLowering.cpp')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/TargetLowering.cpp | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/lib/CodeGen/SelectionDAG/TargetLowering.cpp index 56f3a45c9a..be3ecf34f7 100644 --- a/lib/CodeGen/SelectionDAG/TargetLowering.cpp +++ b/lib/CodeGen/SelectionDAG/TargetLowering.cpp @@ -613,6 +613,7 @@ TargetLowering::TargetLowering(const TargetMachine &tm, ShouldFoldAtomicFences = false; InsertFencesForAtomic = false; SupportJumpTables = true; + MinimumJumpTableEntries = 4; InitLibcallNames(LibcallRoutineNames); InitCmpLibcallCCs(CmpLibcallCCs); |