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author | Evan Cheng <evan.cheng@apple.com> | 2008-09-07 08:19:51 +0000 |
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committer | Evan Cheng <evan.cheng@apple.com> | 2008-09-07 08:19:51 +0000 |
commit | 34fc6ceb73ed9e6acaa40c86b0b68684b95cca23 (patch) | |
tree | f8e84eb82ee39fb37d24e06aa3e122164573f28b /utils | |
parent | b9baf3167908fc56f7ed49d0b31fe25237bca841 (diff) | |
download | llvm-34fc6ceb73ed9e6acaa40c86b0b68684b95cca23.tar.gz llvm-34fc6ceb73ed9e6acaa40c86b0b68684b95cca23.tar.bz2 llvm-34fc6ceb73ed9e6acaa40c86b0b68684b95cca23.tar.xz |
Ignore multi-instruction patterns. e.g.
def : Pat<(i8 (trunc GR32:$src)),
(i8 (EXTRACT_SUBREG (MOV32to32_ GR32:$src), x86_subreg_8bit))>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55875 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'utils')
-rw-r--r-- | utils/TableGen/FastISelEmitter.cpp | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/utils/TableGen/FastISelEmitter.cpp b/utils/TableGen/FastISelEmitter.cpp index 3d07405be5..6f47c633e1 100644 --- a/utils/TableGen/FastISelEmitter.cpp +++ b/utils/TableGen/FastISelEmitter.cpp @@ -259,6 +259,20 @@ void FastISelMap::CollectPatterns(CodeGenDAGPatterns &CGP) { if (II.OperandList.empty()) continue; + // For now, ignore multi-instruction patterns. + bool MultiInsts = false; + for (unsigned i = 0, e = Dst->getNumChildren(); i != e; ++i) { + TreePatternNode *ChildOp = Dst->getChild(i); + if (ChildOp->isLeaf()) + continue; + if (ChildOp->getOperator()->isSubClassOf("Instruction")) { + MultiInsts = true; + break; + } + } + if (MultiInsts) + continue; + // For now, ignore instructions where the first operand is not an // output register. const CodeGenRegisterClass *DstRC = 0; |