Fix escaping in asm string literals correctly by having tblgen unescape
them, then the asmprinter emitter reescape them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66958 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/AsmWriterEmitter.cpp b/utils/TableGen/AsmWriterEmitter.cpp
index e7fe8c3..93ef6c8 100644
--- a/utils/TableGen/AsmWriterEmitter.cpp
+++ b/utils/TableGen/AsmWriterEmitter.cpp
@@ -130,11 +130,20 @@
// Emit a constant string fragment.
if (DollarPos != LastEmitted) {
- // TODO: this should eventually handle escaping.
- if (CurVariant == Variant || CurVariant == ~0U)
- AddLiteralString(std::string(AsmString.begin()+LastEmitted,
- AsmString.begin()+DollarPos));
- LastEmitted = DollarPos;
+ if (CurVariant == Variant || CurVariant == ~0U) {
+ for (; LastEmitted != DollarPos; ++LastEmitted)
+ switch (AsmString[LastEmitted]) {
+ case '\n': AddLiteralString("\\n"); break;
+ case '\t': AddLiteralString("\\t"); break;
+ case '"': AddLiteralString("\\\""); break;
+ case '\\': AddLiteralString("\\\\"); break;
+ default:
+ AddLiteralString(std::string(1, AsmString[LastEmitted]));
+ break;
+ }
+ } else {
+ LastEmitted = DollarPos;
+ }
} else if (AsmString[DollarPos] == '\\') {
if (DollarPos+1 != AsmString.size() &&
(CurVariant == Variant || CurVariant == ~0U)) {