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author | Chris Lattner <sabre@nondot.org> | 2010-03-27 20:09:24 +0000 |
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committer | Chris Lattner <sabre@nondot.org> | 2010-03-27 20:09:24 +0000 |
commit | 9414ae52911f1d62cabd5108e0381b9d17476157 (patch) | |
tree | ef1ee4201f255ad3d1da814bf9f745423c57de8e /utils/TableGen/CodeGenInstruction.cpp | |
parent | 0be6fe71390c50b211beb70e6c50e5fae060f746 (diff) | |
download | external_llvm-9414ae52911f1d62cabd5108e0381b9d17476157.zip external_llvm-9414ae52911f1d62cabd5108e0381b9d17476157.tar.gz external_llvm-9414ae52911f1d62cabd5108e0381b9d17476157.tar.bz2 |
hoist some funky logic into CodeGenInstruction
from two places in CodeGenDAGPatterns.cpp, and
use it in DAGISelMatcherGen.cpp instead of using
an incorrect predicate that happened to get lucky
on our current targets.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99726 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'utils/TableGen/CodeGenInstruction.cpp')
-rw-r--r-- | utils/TableGen/CodeGenInstruction.cpp | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/utils/TableGen/CodeGenInstruction.cpp b/utils/TableGen/CodeGenInstruction.cpp index eea5561..99d196c 100644 --- a/utils/TableGen/CodeGenInstruction.cpp +++ b/utils/TableGen/CodeGenInstruction.cpp @@ -12,6 +12,7 @@ //===----------------------------------------------------------------------===// #include "CodeGenInstruction.h" +#include "CodeGenTarget.h" #include "Record.h" #include "llvm/ADT/StringExtras.h" #include "llvm/ADT/STLExtras.h" @@ -294,3 +295,22 @@ CodeGenInstruction::ParseOperandName(const std::string &Op, // Otherwise, didn't find it! throw TheDef->getName() + ": unknown suboperand name in '" + Op + "'"; } + + +/// HasOneImplicitDefWithKnownVT - If the instruction has at least one +/// implicit def and it has a known VT, return the VT, otherwise return +/// MVT::Other. +MVT::SimpleValueType CodeGenInstruction:: +HasOneImplicitDefWithKnownVT(const CodeGenTarget &TargetInfo) const { + if (ImplicitDefs.empty()) return MVT::Other; + + // Check to see if the first implicit def has a resolvable type. + Record *FirstImplicitDef = ImplicitDefs[0]; + assert(FirstImplicitDef->isSubClassOf("Register")); + const std::vector<MVT::SimpleValueType> &RegVTs = + TargetInfo.getRegisterVTs(FirstImplicitDef); + if (RegVTs.size() == 1) + return RegVTs[0]; + return MVT::Other; +} + |