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Added field noResults to Instruction.

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Currently tblgen cannot tell which operands in the operand list are results so
it assumes the first one is a result. This is bad. Ideally we would fix this
by separating results from inputs, e.g. (res R32:$dst),
(ops R32:$src1, R32:$src2). But that's a more distruptive change. Adding
'let noResults = 1' is the workaround to tell tblgen that the instruction does
not produces a result. It works for now since tblgen does not support
instructions which produce multiple results.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25017 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2005-12-26 09:11:45 +00:00
parent 2abbe867ab
commit 2b4ea795a2
10 changed files with 48 additions and 47 deletions
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1
utils/TableGen/CodeGenTarget.cpp
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@ -273,6 +273,7 @@ CodeGenInstruction::CodeGenInstruction(Record *R, const std::string &AsmStr)
hasCtrlDep = R->getValueAsBit("hasCtrlDep");
hasInFlag = R->getValueAsBit("hasInFlag");
hasOutFlag = R->getValueAsBit("hasOutFlag");
noResults = R->getValueAsBit("noResults");
hasVariableNumberOfOperands = false;
DagInit *DI;