[Attributor][FIX] Do not compute ranges for arguments of declarations
This cannot be triggered right now, as far as I know, but it doesn't
make sense to deduce a constant range on arguments of declarations.
Exposed during testing of AAValueSimplify extensions.
diff --git a/llvm/lib/Transforms/IPO/Attributor.cpp b/llvm/lib/Transforms/IPO/Attributor.cpp
index 0de59b3..b712ef7 100644
--- a/llvm/lib/Transforms/IPO/Attributor.cpp
+++ b/llvm/lib/Transforms/IPO/Attributor.cpp
@@ -7052,10 +7052,18 @@
struct AAValueConstantRangeArgument final
: AAArgumentFromCallSiteArguments<
AAValueConstantRange, AAValueConstantRangeImpl, IntegerRangeState> {
- AAValueConstantRangeArgument(const IRPosition &IRP)
- : AAArgumentFromCallSiteArguments<
- AAValueConstantRange, AAValueConstantRangeImpl, IntegerRangeState>(
- IRP) {}
+ using Base = AAArgumentFromCallSiteArguments<
+ AAValueConstantRange, AAValueConstantRangeImpl, IntegerRangeState>;
+ AAValueConstantRangeArgument(const IRPosition &IRP) : Base(IRP) {}
+
+ /// See AbstractAttribute::initialize(..).
+ void initialize(Attributor &A) override {
+ if (!getAnchorScope() || getAnchorScope()->isDeclaration()) {
+ indicatePessimisticFixpoint();
+ } else {
+ Base::initialize(A);
+ }
+ }
/// See AbstractAttribute::trackStatistics()
void trackStatistics() const override {
