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| author | Dan Gohman <gohman@apple.com> | 2010-06-18 23:28:01 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2010-06-18 23:28:01 +0000 |
| commit | db4971259ce94cea26e555e9ade82672a3581f5c (patch) | |
| tree | 312318482d5af5306e9d2881f4bdc15f3b4664b2 /include/llvm/CodeGen/SelectionDAGNodes.h | |
| parent | 8af5ed9e15cfb48817c0f1f46b66b8fe54412036 (diff) | |
Teach regular and fast isel to set dead flags on unused implicit defs
on calls and similar instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106353 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/CodeGen/SelectionDAGNodes.h')
| -rw-r--r-- | include/llvm/CodeGen/SelectionDAGNodes.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/llvm/CodeGen/SelectionDAGNodes.h b/include/llvm/CodeGen/SelectionDAGNodes.h index 50d853cb46..d4aa78211f 100644 --- a/include/llvm/CodeGen/SelectionDAGNodes.h +++ b/include/llvm/CodeGen/SelectionDAGNodes.h @@ -549,6 +549,15 @@ public: return FoundNode; } + /// getFlaggedUser - If this node has a flag value with a user, return + /// the user (there is at most one). Otherwise return NULL. + SDNode *getFlaggedUser() const { + for (use_iterator UI = use_begin(), UE = use_end(); UI != UE; ++UI) + if (UI.getUse().get().getValueType() == MVT::Flag) + return *UI; + return 0; + } + /// getNumValues - Return the number of values defined/returned by this /// operator. /// |