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| author |   patrick <patrick@openbsd.org> | 2018-04-06 14:26:03 +0000 |
|---|---|---|
| committer | patrick <patrick@openbsd.org> | 2018-04-06 14:26:03 +0000 |
| commit | bdabc2f19ffb9e20600dad6e8a300842a7bda50e (patch) | |
| tree | c50e7b2e5449b074651bb82a58517a8ebc4a8cf7 /gnu/llvm/lib/CodeGen/TailDuplication.cpp | |
| parent | Print a 'p' flag for file descriptors that were opened after pledge(2). (diff) | |
| download | wireguard-openbsd-bdabc2f19ffb9e20600dad6e8a300842a7bda50e.tar.xz wireguard-openbsd-bdabc2f19ffb9e20600dad6e8a300842a7bda50e.zip | |
Import LLVM 6.0.1 release including clang, lld and lldb.
"where is the kaboom?" deraadt@
Diffstat (limited to 'gnu/llvm/lib/CodeGen/TailDuplication.cpp')
| -rw-r--r-- | gnu/llvm/lib/CodeGen/TailDuplication.cpp | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/gnu/llvm/lib/CodeGen/TailDuplication.cpp b/gnu/llvm/lib/CodeGen/TailDuplication.cpp index 489a607eb17..df1eebf43b2 100644 --- a/gnu/llvm/lib/CodeGen/TailDuplication.cpp +++ b/gnu/llvm/lib/CodeGen/TailDuplication.cpp @@ -15,6 +15,8 @@ #include "llvm/CodeGen/MachineBranchProbabilityInfo.h" #include "llvm/CodeGen/MachineFunction.h" #include "llvm/CodeGen/MachineFunctionPass.h" +#include "llvm/CodeGen/MachineRegisterInfo.h" +#include "llvm/CodeGen/Passes.h" #include "llvm/CodeGen/TailDuplicator.h" #include "llvm/Pass.h" @@ -47,12 +49,15 @@ char &llvm::TailDuplicateID = TailDuplicatePass::ID; INITIALIZE_PASS(TailDuplicatePass, DEBUG_TYPE, "Tail Duplication", false, false) bool TailDuplicatePass::runOnMachineFunction(MachineFunction &MF) { - if (skipFunction(*MF.getFunction())) + if (skipFunction(MF.getFunction())) return false; auto MBPI = &getAnalysis<MachineBranchProbabilityInfo>(); - Duplicator.initMF(MF, MBPI, /* LayoutMode */ false); + // TODO: Querying isSSA() to determine pre-/post-regalloc is fragile, better + // split this into two passes instead. + bool PreRegAlloc = MF.getRegInfo().isSSA(); + Duplicator.initMF(MF, PreRegAlloc, MBPI, /* LayoutMode */ false); bool MadeChange = false; while (Duplicator.tailDuplicateBlocks()) |