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| author | Robert Lytton <robert@xmos.com> | 2013-11-12 10:11:26 +0000 |
|---|---|---|
| committer | Robert Lytton <robert@xmos.com> | 2013-11-12 10:11:26 +0000 |
| commit | 32e8528c3368d5e0986cb265b436799cc490ea0c (patch) | |
| tree | db91eca62ea74e7333238360b8342865d89ce151 /lib/Target/XCore/XCoreISelLowering.h | |
| parent | c17ea93ed516d5c7d03a8d5c7fc470a0f254b58a (diff) | |
| download | llvm-32e8528c3368d5e0986cb265b436799cc490ea0c.tar.gz llvm-32e8528c3368d5e0986cb265b436799cc490ea0c.tar.bz2 llvm-32e8528c3368d5e0986cb265b436799cc490ea0c.tar.xz | |
Add XCore support for ATOMIC_FENCE.
ATOMIC_FENCE is lowered to a compiler barrier which is codegen only. There
is no need to emit an instructions since the XCore provides sequential
consistency.
Original patch by Richard Osborne
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194464 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/XCore/XCoreISelLowering.h')
| -rw-r--r-- | lib/Target/XCore/XCoreISelLowering.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/lib/Target/XCore/XCoreISelLowering.h b/lib/Target/XCore/XCoreISelLowering.h index 2a6c8748cd..bc08497b12 100644 --- a/lib/Target/XCore/XCoreISelLowering.h +++ b/lib/Target/XCore/XCoreISelLowering.h @@ -70,7 +70,10 @@ namespace llvm { BR_JT, // Jumptable branch using long branches for each entry. - BR_JT32 + BR_JT32, + + // Memory barrier. + MEMBARRIER }; } @@ -158,6 +161,7 @@ namespace llvm { SDValue LowerINIT_TRAMPOLINE(SDValue Op, SelectionDAG &DAG) const; SDValue LowerADJUST_TRAMPOLINE(SDValue Op, SelectionDAG &DAG) const; SDValue LowerINTRINSIC_WO_CHAIN(SDValue Op, SelectionDAG &DAG) const; + SDValue LowerATOMIC_FENCE(SDValue Op, SelectionDAG &DAG) const; // Inline asm support std::pair<unsigned, const TargetRegisterClass*> |