Allow multiclass def names to contain "#NAME"" where TableGen replaces
#NAME# with the name of the defm instantiating the multiclass. This is
useful for AVX instruction naming where a "V" prefix is standard
throughout the ISA. For example:
multiclass SSE_AVX_Inst<...> {
def SS : Instr<...>;
def SD : Instr<...>;
def PS : Instr<...>;
def PD : Instr<...>;
def V#NAME#SS : Instr<...>;
def V#NAME#SD : Instr<...>;
def V#NAME#PS : Instr<...>;
def V#NAME#PD : Instr<...>;
}
defm ADD : SSE_AVX_Inst<...>;
Results in
ADDSS
ADDSD
ADDPS
ADDPD
VADDSS
VADDSD
VADDPS
VADDPD
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70979 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/TGLexer.cpp b/utils/TableGen/TGLexer.cpp
index f2ea7a1..8eb219b 100644
--- a/utils/TableGen/TGLexer.cpp
+++ b/utils/TableGen/TGLexer.cpp
@@ -98,7 +98,7 @@
switch (CurChar) {
default:
// Handle letters: [a-zA-Z_]
- if (isalpha(CurChar) || CurChar == '_')
+ if (isalpha(CurChar) || CurChar == '_' || CurChar == '#')
return LexIdentifier();
// Unknown character, emit an error.
@@ -220,8 +220,20 @@
const char *IdentStart = TokStart;
// Match the rest of the identifier regex: [0-9a-zA-Z_]*
- while (isalpha(*CurPtr) || isdigit(*CurPtr) || *CurPtr == '_')
- ++CurPtr;
+ while (isalpha(*CurPtr) || isdigit(*CurPtr) || *CurPtr == '_'
+ || *CurPtr == '#') {
+ // If this contains a '#', make sure it's value
+ if (*CurPtr == '#') {
+ if (strncmp(CurPtr, "#NAME#", 6) != 0) {
+ return tgtok::Error;
+ }
+ CurPtr += 6;
+ }
+ else {
+ ++CurPtr;
+ }
+ }
+
// Check to see if this identifier is a keyword.
unsigned Len = CurPtr-IdentStart;