Changes in directory llvm/include/llvm:
InlineAsm.h updated: 1.6 -> 1.7
---
Log message:
Beef up the interface to inline asm constraint parsing, making it more
general, useful, and easier to use.
---
Diffs of the changes: (+27 -3)
InlineAsm.h | 30 +++++++++++++++++++++++++++---
1 files changed, 27 insertions(+), 3 deletions(-)
Index: llvm/include/llvm/InlineAsm.h
diff -u llvm/include/llvm/InlineAsm.h:1.6 llvm/include/llvm/InlineAsm.h:1.7
--- llvm/include/llvm/InlineAsm.h:1.6 Wed Jan 25 20:21:42 2006
+++ llvm/include/llvm/InlineAsm.h Tue Jan 31 19:27:37 2006
@@ -70,17 +70,41 @@
enum ConstraintPrefix {
isInput, // 'x'
isOutput, // '=x'
- isIndirectOutput, // '==x'
isClobber, // '~x'
};
+ struct ConstraintInfo {
+ /// Type - The basic type of the constraint: input/output/clobber
+ ///
+ ConstraintPrefix Type;
+
+ /// isEarlyClobber - "&": output operand writes result before inputs are
all
+ /// read. This is only ever set for an output operand.
+ bool isEarlyClobber;
+
+ /// isIndirectOutput - If this is true for an output constraint, the
address
+ /// to store the output result is passed as an operand to the call.
+ bool isIndirectOutput;
+
+ /// Code - The constraint code, either the register name (in braces) or the
+ /// constraint letter/number.
+ std::vector<std::string> Codes;
+
+ /// Parse - Analyze the specified string (e.g. "==&{eax}") and fill in the
+ /// fields in this structure. If the constraint string is not understood,
+ /// return true, otherwise return false.
+ bool Parse(const std::string &Str);
+ };
+
/// ParseConstraints - Split up the constraint string into the specific
/// constraints and their prefixes. If this returns an empty vector, and if
/// the constraint string itself isn't empty, there was an error parsing.
- static std::vector<std::pair<ConstraintPrefix, std::string> >
+ static std::vector<ConstraintInfo>
ParseConstraints(const std::string &ConstraintString);
- std::vector<std::pair<ConstraintPrefix, std::string> >
+ /// ParseConstraints - Parse the constraints of this inlineasm object,
+ /// returning them the same way that ParseConstraints(str) does.
+ std::vector<ConstraintInfo>
ParseConstraints() const {
return ParseConstraints(Constraints);
}
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