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Split ISD::LABEL into ISD::DBG_LABEL and ISD::EH_LABEL, eliminating

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the need for a flavor operand, and add a new SDNode subclass,
LabelSDNode, for use with them to eliminate the need for a label id
operand.

Change instruction selection to let these label nodes through
unmodified instead of creating copies of them. Teach the MachineInstr
emitter how to emit a MachineInstr directly from an ISD label node.

This avoids the need for allocating SDNodes for the label id and
flavor value, as well as SDNodes for each of the post-isel label,
label id, and label flavor.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52943 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2008-07-01 00:05:16 +00:00
parent c2bf1870a7
commit 4406604047
35 changed files with 192 additions and 114 deletions
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12
utils/TableGen/CodeEmitterGen.cpp
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@@ -26,7 +26,9 @@ void CodeEmitterGen::reverseBits(std::vector<Record*> &Insts) {
Record *R = *I;
if (R->getName() == "PHI" ||
R->getName() == "INLINEASM" ||
R->getName() == "LABEL" ||
R->getName() == "DBG_LABEL" ||
R->getName() == "EH_LABEL" ||
R->getName() == "GC_LABEL" ||
R->getName() == "DECLARE" ||
R->getName() == "EXTRACT_SUBREG" ||
R->getName() == "INSERT_SUBREG" ||
@@ -102,7 +104,9 @@ void CodeEmitterGen::run(std::ostream &o) {
if (R->getName() == "PHI" ||
R->getName() == "INLINEASM" ||
R->getName() == "LABEL" ||
R->getName() == "DBG_LABEL" ||
R->getName() == "EH_LABEL" ||
R->getName() == "GC_LABEL" ||
R->getName() == "DECLARE" ||
R->getName() == "EXTRACT_SUBREG" ||
R->getName() == "INSERT_SUBREG" ||
@@ -137,7 +141,9 @@ void CodeEmitterGen::run(std::ostream &o) {
if (InstName == "PHI" ||
InstName == "INLINEASM" ||
InstName == "LABEL"||
InstName == "DBG_LABEL"||
InstName == "EH_LABEL"||
InstName == "GC_LABEL"||
InstName == "DECLARE"||
InstName == "EXTRACT_SUBREG" ||
InstName == "INSERT_SUBREG" ||