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For a tablegen expression such as !if(a,b,c), let 'a'

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be evaluated for 'bit' operators


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106185 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bruno Cardoso Lopes
2010-06-17 00:31:36 +00:00
parent e3f647360c
commit eba8f1893b
3 changed files with 17 additions and 3 deletions
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3
docs/TableGenFundamentals.html
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@@ -422,7 +422,8 @@ class. This operation is analogous to $(foreach) in GNU make.</dd>
<dt><tt>!null(a)</tt></dt> <dt><tt>!null(a)</tt></dt>
<dd>An integer {0,1} indicating whether list 'a' is empty.</dd> <dd>An integer {0,1} indicating whether list 'a' is empty.</dd>
<dt><tt>!if(a,b,c)</tt></dt> <dt><tt>!if(a,b,c)</tt></dt>
<dd>'b' if the result of integer operator 'a' is nonzero, 'c' otherwise.</dd> <dd>'b' if the result of 'int' or 'bit' operator 'a' is nonzero,
'c' otherwise.</dd>
<dt><tt>!eq(a,b)</tt></dt> <dt><tt>!eq(a,b)</tt></dt>
<dd>Integer one if string a is equal to string b, zero otherwise. This <dd>Integer one if string a is equal to string b, zero otherwise. This
only operates on string, int and bit objects. Use !cast<string> to only operates on string, int and bit objects. Use !cast<string> to

11
test/TableGen/ifbit.td Normal file
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@@ -0,0 +1,11 @@
// RUN: tblgen %s | FileCheck %s
// XFAIL: vg_leak
// CHECK: a = 6
// CHECK: a = 5
class A<bit b = 1> {
int a = !if(b, 5, 6);
}
def X : A<0>;
def Y : A;

6
utils/TableGen/Record.cpp
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@@ -981,7 +981,8 @@ Init *TernOpInit::Fold(Record *CurRec, MultiClass *CurMultiClass) {
} }
case IF: { case IF: {
IntInit *LHSi = dynamic_cast<IntInit*>(LHS); IntInit *LHSi =
dynamic_cast<IntInit*>(LHS->convertInitializerTo(new IntRecTy()));
if (LHSi) { if (LHSi) {
if (LHSi->getValue()) { if (LHSi->getValue()) {
return MHS; return MHS;
@@ -1000,7 +1001,8 @@ Init *TernOpInit::resolveReferences(Record &R, const RecordVal *RV) {
Init *lhs = LHS->resolveReferences(R, RV); Init *lhs = LHS->resolveReferences(R, RV);
if (Opc == IF && lhs != LHS) { if (Opc == IF && lhs != LHS) {
IntInit *Value = dynamic_cast<IntInit*>(lhs); IntInit *Value =
dynamic_cast<IntInit*>(LHS->convertInitializerTo(new IntRecTy()));
if (Value != 0) { if (Value != 0) {
// Short-circuit // Short-circuit
if (Value->getValue()) { if (Value->getValue()) {