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A few inline asm cleanups:

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- Make targetlowering.h fit in 80 cols.
  - Make LowerAsmOperandForConstraint const.
  - Make lowerXConstraint -> LowerXConstraint
  - Make LowerXConstraint return a const char* instead of taking a string byref.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50312 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2008-04-26 23:02:14 +00:00
parent 2ba1c06d48
commit 5e764233f3
6 changed files with 40 additions and 39 deletions
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35
include/llvm/Target/TargetLowering.h
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@@ -1100,16 +1100,19 @@ public:
std::string *Current = &Codes[0];
TargetLowering::ConstraintType CurType = TLI.getConstraintType(*Current);
if (Codes.size() == 1) { // Single-letter constraints ('r') are very common.
// Single-letter constraints ('r') are very common.
if (Codes.size() == 1) {
ConstraintCode = *Current;
ConstraintType = CurType;
} else {
unsigned CurGenerality = getConstraintGenerality(CurType);
// If we have multiple constraints, try to pick the most general one ahead
// of time. This isn't a wonderful solution, but handles common cases.
// If we have multiple constraints, try to pick the most general one
// ahead of time. This isn't a wonderful solution, but handles common
// cases.
for (unsigned j = 1, e = Codes.size(); j != e; ++j) {
TargetLowering::ConstraintType ThisType = TLI.getConstraintType(Codes[j]);
TargetLowering::ConstraintType ThisType =
TLI.getConstraintType(Codes[j]);
unsigned ThisGenerality = getConstraintGenerality(ThisType);
if (ThisGenerality > CurGenerality) {
// This constraint letter is more general than the previous one,
@@ -1124,17 +1127,17 @@ public:
ConstraintType = CurType;
}
// 'X' matches anything.
if (ConstraintCode == "X" && CallOperandVal) {
// Labels and constants are handled elsewhere ('X' is the only thing
// that matches labels).
if (isa<BasicBlock>(CallOperandVal) || isa<ConstantInt>(CallOperandVal))
return;
// This matches anything. Labels and constants we handle elsewhere
// ('X' is the only thing that matches labels). Otherwise, try to
// resolve it to something we know about by looking at the actual
// operand type.
std::string s = "";
TLI.lowerXConstraint(ConstraintVT, s);
if (s!="") {
ConstraintCode = s;
// Otherwise, try to resolve it to something we know about by looking at
// the actual operand type.
if (const char *Repl = TLI.LowerXConstraint(ConstraintVT)) {
ConstraintCode = Repl;
ConstraintType = TLI.getConstraintType(ConstraintCode);
}
}
@@ -1168,15 +1171,15 @@ public:
/// LowerXConstraint - try to replace an X constraint, which matches anything,
/// with another that has more specific requirements based on the type of the
/// corresponding operand.
virtual void lowerXConstraint(MVT::ValueType ConstraintVT,
std::string&) const;
/// corresponding operand. This returns null if there is no replacement to
/// make.
virtual const char *LowerXConstraint(MVT::ValueType ConstraintVT) const;
/// LowerAsmOperandForConstraint - Lower the specified operand into the Ops
/// vector. If it is invalid, don't add anything to Ops.
virtual void LowerAsmOperandForConstraint(SDOperand Op, char ConstraintLetter,
std::vector<SDOperand> &Ops,
SelectionDAG &DAG);
SelectionDAG &DAG) const;
//===--------------------------------------------------------------------===//
// Scheduler hooks