[llvm-commits] CVS: llvm/utils/TableGen/DAGISelEmitter.cpp DAGISelEmitter.h
Evan Cheng
evan.cheng at apple.com
Wed Apr 19 11:07:37 PDT 2006
Changes in directory llvm/utils/TableGen:
DAGISelEmitter.cpp updated: 1.194 -> 1.195
DAGISelEmitter.h updated: 1.61 -> 1.62
---
Log message:
Allow "let AddedCost = n in" to increase pattern complexity.
---
Diffs of the changes: (+21 -7)
DAGISelEmitter.cpp | 21 ++++++++++++++++-----
DAGISelEmitter.h | 7 +++++--
2 files changed, 21 insertions(+), 7 deletions(-)
Index: llvm/utils/TableGen/DAGISelEmitter.cpp
diff -u llvm/utils/TableGen/DAGISelEmitter.cpp:1.194 llvm/utils/TableGen/DAGISelEmitter.cpp:1.195
--- llvm/utils/TableGen/DAGISelEmitter.cpp:1.194 Thu Apr 6 15:36:51 2006
+++ llvm/utils/TableGen/DAGISelEmitter.cpp Wed Apr 19 13:07:24 2006
@@ -1504,7 +1504,8 @@
TreePatternNode *DstPattern = TheInst.getResultPattern();
PatternsToMatch.
push_back(PatternToMatch(Instr->getValueAsListInit("Predicates"),
- SrcPattern, DstPattern));
+ SrcPattern, DstPattern,
+ Instr->getValueAsInt("AddedCost")));
}
}
@@ -1580,7 +1581,8 @@
PatternsToMatch.
push_back(PatternToMatch(Patterns[i]->getValueAsListInit("Predicates"),
Pattern->getOnlyTree(),
- Temp.getOnlyTree()));
+ Temp.getOnlyTree(),
+ Patterns[i]->getValueAsInt("AddedCost")));
}
}
@@ -1823,7 +1825,8 @@
// Otherwise, add it to the list of patterns we have.
PatternsToMatch.
push_back(PatternToMatch(PatternsToMatch[i].getPredicates(),
- Variant, PatternsToMatch[i].getDstPattern()));
+ Variant, PatternsToMatch[i].getDstPattern(),
+ PatternsToMatch[i].getAddedCost()));
}
DEBUG(std::cerr << "\n");
@@ -1933,6 +1936,8 @@
PatternToMatch *RHS) {
unsigned LHSSize = getPatternSize(LHS->getSrcPattern(), ISE);
unsigned RHSSize = getPatternSize(RHS->getSrcPattern(), ISE);
+ LHSSize += LHS->getAddedCost();
+ RHSSize += RHS->getAddedCost();
if (LHSSize > RHSSize) return true; // LHS -> bigger -> less cost
if (LHSSize < RHSSize) return false;
@@ -2003,6 +2008,8 @@
// Predicates.
ListInit *Predicates;
+ // Pattern cost.
+ unsigned Cost;
// Instruction selector pattern.
TreePatternNode *Pattern;
// Matched instruction.
@@ -2939,8 +2946,10 @@
OS << "\n" << std::string(Indent, ' ') << "// Emits: ";
Pattern.getDstPattern()->print(OS);
OS << "\n";
+ unsigned AddedCost = Pattern.getAddedCost();
OS << std::string(Indent, ' ') << "// Pattern complexity = "
- << getPatternSize(Pattern.getSrcPattern(), *this) << " cost = "
+ << getPatternSize(Pattern.getSrcPattern(), *this) + AddedCost
+ << " cost = "
<< getResultPatternCost(Pattern.getDstPattern(), *this) << "\n";
}
if (!FirstCodeLine.first) {
@@ -2960,8 +2969,10 @@
OS << "\n" << std::string(Indent, ' ') << "// Emits: ";
Pattern.getDstPattern()->print(OS);
OS << "\n";
+ unsigned AddedCost = Pattern.getAddedCost();
OS << std::string(Indent, ' ') << "// Pattern complexity = "
- << getPatternSize(Pattern.getSrcPattern(), *this) << " cost = "
+ << getPatternSize(Pattern.getSrcPattern(), *this) + AddedCost
+ << " cost = "
<< getResultPatternCost(Pattern.getDstPattern(), *this) << "\n";
}
EmitPatterns(Other, Indent, OS);
Index: llvm/utils/TableGen/DAGISelEmitter.h
diff -u llvm/utils/TableGen/DAGISelEmitter.h:1.61 llvm/utils/TableGen/DAGISelEmitter.h:1.62
--- llvm/utils/TableGen/DAGISelEmitter.h:1.61 Fri Mar 24 17:10:39 2006
+++ llvm/utils/TableGen/DAGISelEmitter.h Wed Apr 19 13:07:24 2006
@@ -394,16 +394,19 @@
/// PatternToMatch - Used by DAGISelEmitter to keep tab of patterns processed
/// to produce isel.
struct PatternToMatch {
- PatternToMatch(ListInit *preds, TreePatternNode *src, TreePatternNode *dst):
- Predicates(preds), SrcPattern(src), DstPattern(dst) {};
+ PatternToMatch(ListInit *preds,
+ TreePatternNode *src, TreePatternNode *dst, unsigned cost):
+ Predicates(preds), SrcPattern(src), DstPattern(dst), AddedCost(cost) {};
ListInit *Predicates; // Top level predicate conditions to match.
TreePatternNode *SrcPattern; // Source pattern to match.
TreePatternNode *DstPattern; // Resulting pattern.
+ unsigned AddedCost; // Add to matching pattern complexity.
ListInit *getPredicates() const { return Predicates; }
TreePatternNode *getSrcPattern() const { return SrcPattern; }
TreePatternNode *getDstPattern() const { return DstPattern; }
+ unsigned getAddedCost() const { return AddedCost; }
};
/// DAGISelEmitter - The top-level class which coordinates construction
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