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| author | Dan Gohman <gohman@apple.com> | 2008-08-19 20:58:14 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2008-08-19 20:58:14 +0000 |
| commit | cf711aa5b66ed684ebc65e08369abab911d6f799 (patch) | |
| tree | 5aa0774cc788739bde4303d423d2c0a8f08ad382 /utils | |
| parent | d1d2ee8ccbcf0d8c54a07413d4ae599ebfdda14b (diff) | |
| download | llvm-cf711aa5b66ed684ebc65e08369abab911d6f799.tar.gz llvm-cf711aa5b66ed684ebc65e08369abab911d6f799.tar.bz2 llvm-cf711aa5b66ed684ebc65e08369abab911d6f799.tar.xz | |
For now, restrict FastISel to instructions that only involve one
register class.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55008 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'utils')
| -rw-r--r-- | utils/TableGen/FastISelEmitter.cpp | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/utils/TableGen/FastISelEmitter.cpp b/utils/TableGen/FastISelEmitter.cpp index 31e0d1953c..b434c15d8c 100644 --- a/utils/TableGen/FastISelEmitter.cpp +++ b/utils/TableGen/FastISelEmitter.cpp @@ -62,7 +62,8 @@ struct OperandsSignature { /// bool initialize(TreePatternNode *InstPatNode, const CodeGenTarget &Target, - MVT::SimpleValueType VT) { + MVT::SimpleValueType VT, + const CodeGenRegisterClass *DstRC) { for (unsigned i = 0, e = InstPatNode->getNumChildren(); i != e; ++i) { TreePatternNode *Op = InstPatNode->getChild(i); if (!Op->isLeaf()) @@ -82,6 +83,9 @@ struct OperandsSignature { const CodeGenRegisterClass *RC = &Target.getRegisterClass(OpLeafRec); if (!RC) return false; + // For now, all the operands must have the same register class. + if (DstRC != RC) + return false; // For now, all the operands must have the same type. if (Op->getTypeNum(0) != VT) return false; @@ -230,7 +234,7 @@ void FastISelEmitter::run(std::ostream &OS) { // Check all the operands. OperandsSignature Operands; - if (!Operands.initialize(InstPatNode, Target, VT)) + if (!Operands.initialize(InstPatNode, Target, VT, DstRC)) continue; // If it's not a known signature, ignore it. |