}
}
}
+ // Check if all incoming values are non-zero constant.
+ bool AllNonZeroConstants = all_of(PN->operands(), [](Value *V) {
+ return isa<ConstantInt>(V) && !cast<ConstantInt>(V)->isZeroValue();
+ });
+ if (AllNonZeroConstants)
+ return true;
}
if (!BitWidth) return false;
; CHECK-NEXT: ret i1 %[[RES]]
}
+; CHECK-LABEL: phi_allnonzeroconstant
+; CHECK-NOT: phi i32
+; CHECK: ret i1 false
+define i1 @phi_allnonzeroconstant(i1 %c, i32 %a, i32 %b) {
+entry:
+ br i1 %c, label %if.then, label %if.else
+
+if.then: ; preds = %entry
+ br label %if.end
+
+if.else: ; preds = %entry
+ call void @dummy()
+
+ br label %if.end
+
+if.end: ; preds = %if.else, %if.then
+ %x.0 = phi i32 [ 1, %if.then ], [ 2, %if.else ]
+ %or = or i32 %x.0, %a
+ %cmp1 = icmp eq i32 %or, 0
+ ret i1 %cmp1
+}
+
+declare void @dummy()
+