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Make insert_subreg a two-address instruction, vastly simplifying LowerSubregs pass. Add a new TII, subreg_to_reg, which is like insert_subreg except that it takes an immediate implicit value to insert into rather than a register.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48412 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Christopher Lamb
2008-03-16 03:12:01 +00:00
parent 606c5aa084
commit c929823525
11 changed files with 160 additions and 210 deletions
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3
utils/TableGen/InstrInfoEmitter.cpp
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@@ -411,7 +411,8 @@ void InstrInfoEmitter::emitShiftedValue(Record *R, StringInit *Val,
R->getName() != "DECLARE" &&
R->getName() != "EXTRACT_SUBREG" &&
R->getName() != "INSERT_SUBREG" &&
R->getName() != "IMPLICIT_DEF")
R->getName() != "IMPLICIT_DEF" &&
R->getName() != "SUBREG_TO_REG")
throw R->getName() + " doesn't have a field named '" +
Val->getValue() + "'!";
return;