llvm-mc/AsmParser: Allow target to specific a comment delimiter, which will be
used to strip hard coded comments out of .td assembly strings.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78716 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/AsmMatcherEmitter.cpp b/utils/TableGen/AsmMatcherEmitter.cpp
index 57b93b1..4dbd24c 100644
--- a/utils/TableGen/AsmMatcherEmitter.cpp
+++ b/utils/TableGen/AsmMatcherEmitter.cpp
@@ -501,6 +501,15 @@
class AsmMatcherInfo {
public:
+ /// The tablegen AsmParser record.
+ Record *AsmParser;
+
+ /// The AsmParser "CommentDelimiter" value.
+ std::string CommentDelimiter;
+
+ /// The AsmParser "RegisterPrefix" value.
+ std::string RegisterPrefix;
+
/// The classes which are needed for matching.
std::vector<ClassInfo*> Classes;
@@ -537,6 +546,8 @@
void BuildOperandClasses(CodeGenTarget &Target);
public:
+ AsmMatcherInfo(Record *_AsmParser);
+
/// BuildInfo - Construct the various tables used during matching.
void BuildInfo(CodeGenTarget &Target);
};
@@ -778,6 +789,13 @@
}
}
+AsmMatcherInfo::AsmMatcherInfo(Record *_AsmParser)
+ : AsmParser(_AsmParser),
+ CommentDelimiter(AsmParser->getValueAsString("CommentDelimiter")),
+ RegisterPrefix(AsmParser->getValueAsString("RegisterPrefix"))
+{
+}
+
void AsmMatcherInfo::BuildInfo(CodeGenTarget &Target) {
// Build info for the register classes.
BuildRegisterClasses(Target);
@@ -801,6 +819,13 @@
II->Instr = &it->second;
II->AsmString = FlattenVariants(CGI.AsmString, 0);
+ // Remove comments from the asm string.
+ if (!CommentDelimiter.empty()) {
+ size_t Idx = StringRef(II->AsmString).find(CommentDelimiter);
+ if (Idx != StringRef::npos)
+ II->AsmString = II->AsmString.substr(0, Idx);
+ }
+
TokenizeAsmString(II->AsmString, II->Tokens);
// Ignore instructions which shouldn't be matched.
@@ -1309,7 +1334,7 @@
EmitMatchRegisterName(Target, AsmParser, OS);
// Compute the information on the instructions to match.
- AsmMatcherInfo Info;
+ AsmMatcherInfo Info(AsmParser);
Info.BuildInfo(Target);
// Sort the instruction table using the partial order on classes.