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| author | Lang Hames <lhames@gmail.com> | 2013-03-09 22:56:09 +0000 |
|---|---|---|
| committer | Lang Hames <lhames@gmail.com> | 2013-03-09 22:56:09 +0000 |
| commit | f793de7a2331edea161eae20f9bdfa86b0d7fd3c (patch) | |
| tree | dcab834f7e88339434a2433b4bf496e96cf6cba9 /lib/Target/ARM/ARMISelDAGToDAG.cpp | |
| parent | d683edc711ec2ff4eb035ad56e07799b7da52b36 (diff) | |
| download | llvm-f793de7a2331edea161eae20f9bdfa86b0d7fd3c.tar.gz llvm-f793de7a2331edea161eae20f9bdfa86b0d7fd3c.tar.bz2 llvm-f793de7a2331edea161eae20f9bdfa86b0d7fd3c.tar.xz | |
Don't glue users to extract_subreg when selecting the llvm.arm.ldrexd
intrinsic - it can cause impossible-to-schedule subgraphs to be
introduced.
PR15053.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176777 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/ARM/ARMISelDAGToDAG.cpp')
| -rw-r--r-- | lib/Target/ARM/ARMISelDAGToDAG.cpp | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/lib/Target/ARM/ARMISelDAGToDAG.cpp b/lib/Target/ARM/ARMISelDAGToDAG.cpp index 5d9d784d96..2c51de23f7 100644 --- a/lib/Target/ARM/ARMISelDAGToDAG.cpp +++ b/lib/Target/ARM/ARMISelDAGToDAG.cpp @@ -3155,7 +3155,7 @@ SDNode *ARMDAGToDAGISel::Select(SDNode *N) { cast<MachineSDNode>(Ld)->setMemRefs(MemOp, MemOp + 1); // Remap uses. - SDValue Glue = isThumb ? SDValue(Ld, 2) : SDValue(Ld, 1); + SDValue OutChain = isThumb ? SDValue(Ld, 2) : SDValue(Ld, 1); if (!SDValue(N, 0).use_empty()) { SDValue Result; if (isThumb) @@ -3163,9 +3163,8 @@ SDNode *ARMDAGToDAGISel::Select(SDNode *N) { else { SDValue SubRegIdx = CurDAG->getTargetConstant(ARM::gsub_0, MVT::i32); SDNode *ResNode = CurDAG->getMachineNode(TargetOpcode::EXTRACT_SUBREG, - dl, MVT::i32, MVT::Glue, SDValue(Ld, 0), SubRegIdx, Glue); + dl, MVT::i32, SDValue(Ld, 0), SubRegIdx); Result = SDValue(ResNode,0); - Glue = Result.getValue(1); } ReplaceUses(SDValue(N, 0), Result); } @@ -3176,13 +3175,12 @@ SDNode *ARMDAGToDAGISel::Select(SDNode *N) { else { SDValue SubRegIdx = CurDAG->getTargetConstant(ARM::gsub_1, MVT::i32); SDNode *ResNode = CurDAG->getMachineNode(TargetOpcode::EXTRACT_SUBREG, - dl, MVT::i32, MVT::Glue, SDValue(Ld, 0), SubRegIdx, Glue); + dl, MVT::i32, SDValue(Ld, 0), SubRegIdx); Result = SDValue(ResNode,0); - Glue = Result.getValue(1); } ReplaceUses(SDValue(N, 1), Result); } - ReplaceUses(SDValue(N, 2), Glue); + ReplaceUses(SDValue(N, 2), OutChain); return NULL; } |