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| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2018-12-05 11:12:12 +0000 |
|---|---|---|
| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2018-12-05 11:12:12 +0000 |
| commit | 180639afe58ad0a5e6acea99e3d18e511e672c20 (patch) | |
| tree | 8170086df8e310f84ebc4721a7edd8fbdc958a8d /llvm/lib/CodeGen/TargetLoweringBase.cpp | |
| parent | ab090337c5f1cae5bbfc25534497f65e06c35e2d (diff) | |
| download | llvm-180639afe58ad0a5e6acea99e3d18e511e672c20.zip llvm-180639afe58ad0a5e6acea99e3d18e511e672c20.tar.gz llvm-180639afe58ad0a5e6acea99e3d18e511e672c20.tar.bz2 | |
[SelectionDAG] Initial support for FSHL/FSHR funnel shift opcodes (PR39467)
This is an initial patch to add a minimum level of support for funnel shifts to the SelectionDAG and to begin wiring it up to the X86 SHLD/SHRD instructions.
Some partial legalization code has been added to handle the case for 'SlowSHLD' where we want to expand instead and I've added a few DAG combines so we don't get regressions from the existing DAG builder expansion code.
Differential Revision: https://reviews.llvm.org/D54698
llvm-svn: 348353
Diffstat (limited to 'llvm/lib/CodeGen/TargetLoweringBase.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/TargetLoweringBase.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/TargetLoweringBase.cpp b/llvm/lib/CodeGen/TargetLoweringBase.cpp index 44afbef..b6eeda4 100644 --- a/llvm/lib/CodeGen/TargetLoweringBase.cpp +++ b/llvm/lib/CodeGen/TargetLoweringBase.cpp @@ -610,6 +610,8 @@ void TargetLoweringBase::initActions() { setOperationAction(ISD::UMIN, VT, Expand); setOperationAction(ISD::UMAX, VT, Expand); setOperationAction(ISD::ABS, VT, Expand); + setOperationAction(ISD::FSHL, VT, Expand); + setOperationAction(ISD::FSHR, VT, Expand); setOperationAction(ISD::SADDSAT, VT, Expand); setOperationAction(ISD::UADDSAT, VT, Expand); setOperationAction(ISD::SSUBSAT, VT, Expand); |