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| author | Bevin Hansson <bevin.hansson@ericsson.com> | 2020-07-16 17:02:04 +0200 |
|---|---|---|
| committer | Bevin Hansson <bevin.hansson@ericsson.com> | 2020-08-07 15:09:24 +0200 |
| commit | 5de6c56f7e862958cfc6de1abae49c07f6e8c7ed (patch) | |
| tree | dbb7a77f78dcc87f500a75e4faca5842fac4b4a1 /llvm/lib/CodeGen/TargetLoweringBase.cpp | |
| parent | 177735aac7fcac2b1085bfcdcf589681248b5ec8 (diff) | |
| download | llvm-5de6c56f7e862958cfc6de1abae49c07f6e8c7ed.zip llvm-5de6c56f7e862958cfc6de1abae49c07f6e8c7ed.tar.gz llvm-5de6c56f7e862958cfc6de1abae49c07f6e8c7ed.tar.bz2 | |
[Intrinsic] Add sshl.sat/ushl.sat, saturated shift intrinsics.
Summary:
This patch adds two intrinsics, llvm.sshl.sat and llvm.ushl.sat,
which perform signed and unsigned saturating left shift,
respectively.
These are useful for implementing the Embedded-C fixed point
support in Clang, originally discussed in
http://lists.llvm.org/pipermail/llvm-dev/2018-August/125433.html
and
http://lists.llvm.org/pipermail/cfe-dev/2018-May/058019.html
Reviewers: leonardchan, craig.topper, bjope, jdoerfert
Subscribers: hiraditya, jdoerfert, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D83216
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 4562e1e..63e55c9 100644 --- a/llvm/lib/CodeGen/TargetLoweringBase.cpp +++ b/llvm/lib/CodeGen/TargetLoweringBase.cpp @@ -657,6 +657,8 @@ void TargetLoweringBase::initActions() { setOperationAction(ISD::UADDSAT, VT, Expand); setOperationAction(ISD::SSUBSAT, VT, Expand); setOperationAction(ISD::USUBSAT, VT, Expand); + setOperationAction(ISD::SSHLSAT, VT, Expand); + setOperationAction(ISD::USHLSAT, VT, Expand); setOperationAction(ISD::SMULFIX, VT, Expand); setOperationAction(ISD::SMULFIXSAT, VT, Expand); setOperationAction(ISD::UMULFIX, VT, Expand); |