diff options
Diffstat (limited to 'llvm/utils/TableGen/FastISelEmitter.cpp')
| -rw-r--r-- | llvm/utils/TableGen/FastISelEmitter.cpp | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/llvm/utils/TableGen/FastISelEmitter.cpp b/llvm/utils/TableGen/FastISelEmitter.cpp index f132e09415f..539efb4a78e 100644 --- a/llvm/utils/TableGen/FastISelEmitter.cpp +++ b/llvm/utils/TableGen/FastISelEmitter.cpp @@ -453,6 +453,13 @@ void FastISelMap::collectPatterns(CodeGenDAGPatterns &CGP) { if (II.Operands.empty()) continue; + // Allow instructions to be marked as unavailable for FastISel for + // certain cases, i.e. an ISA has two 'and' instruction which differ + // by what registers they can use but are otherwise identical for + // codegen purposes. + if (II.FastISelShouldIgnore) + continue; + // For now, ignore multi-instruction patterns. bool MultiInsts = false; for (unsigned i = 0, e = Dst->getNumChildren(); i != e; ++i) { |
