Implement !if, analogous to $(if) in GNU make.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71815 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/TGParser.cpp b/utils/TableGen/TGParser.cpp
index 8ff25a6..fc6f29f 100644
--- a/utils/TableGen/TGParser.cpp
+++ b/utils/TableGen/TGParser.cpp
@@ -862,6 +862,7 @@
return (new BinOpInit(Code, LHS, RHS, Type))->Fold(CurRec, CurMultiClass);
}
+ case tgtok::XIf:
case tgtok::XForEach:
case tgtok::XSubst: { // Value ::= !ternop '(' Value ',' Value ',' Value ')'
TernOpInit::TernaryOp Code;
@@ -872,6 +873,9 @@
Lex.Lex(); // eat the operation
switch (LexCode) {
default: assert(0 && "Unhandled code!");
+ case tgtok::XIf:
+ Code = TernOpInit::IF;
+ break;
case tgtok::XForEach:
Code = TernOpInit::FOREACH;
break;
@@ -914,6 +918,25 @@
switch (LexCode) {
default: assert(0 && "Unhandled code!");
+ case tgtok::XIf: {
+ TypedInit *MHSt = dynamic_cast<TypedInit *>(MHS);
+ TypedInit *RHSt = dynamic_cast<TypedInit *>(RHS);
+ if (MHSt == 0 || RHSt == 0) {
+ TokError("could not get type for !if");
+ return 0;
+ }
+ if (MHSt->getType()->typeIsConvertibleTo(RHSt->getType())) {
+ Type = RHSt->getType();
+ }
+ else if (RHSt->getType()->typeIsConvertibleTo(MHSt->getType())) {
+ Type = MHSt->getType();
+ }
+ else {
+ TokError("inconsistent types for !if");
+ return 0;
+ }
+ break;
+ }
case tgtok::XForEach: {
TypedInit *MHSt = dynamic_cast<TypedInit *>(MHS);
if (MHSt == 0) {
@@ -1152,6 +1175,7 @@
case tgtok::XSHL:
case tgtok::XStrConcat:
case tgtok::XNameConcat: // Value ::= !binop '(' Value ',' Value ')'
+ case tgtok::XIf:
case tgtok::XForEach:
case tgtok::XSubst: { // Value ::= !ternop '(' Value ',' Value ',' Value ')'
return ParseOperation(CurRec);