introduce a useful abstraction to find out if a Use is in the call position of an instruction
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62788 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/IPO/IPConstantPropagation.cpp b/lib/Transforms/IPO/IPConstantPropagation.cpp
index 6ae8276..2dc8558 100644
--- a/lib/Transforms/IPO/IPConstantPropagation.cpp
+++ b/lib/Transforms/IPO/IPConstantPropagation.cpp
@@ -88,11 +88,12 @@
for (Value::use_iterator UI = F.use_begin(), E = F.use_end(); UI != E; ++UI) {
// Used by a non-instruction, or not the callee of a function, do not
// transform.
- if (UI.getOperandNo() != 0 ||
- (!isa<CallInst>(*UI) && !isa<InvokeInst>(*UI)))
+ if (!isa<CallInst>(*UI) && !isa<InvokeInst>(*UI))
return false;
CallSite CS = CallSite::get(cast<Instruction>(*UI));
+ if (!CS.isCallee(UI))
+ return false;
// Check out all of the potentially constant arguments. Note that we don't
// inspect varargs here.
@@ -219,7 +220,7 @@
// Not a call instruction or a call instruction that's not calling F
// directly?
- if (!Call || UI.getOperandNo() != 0)
+ if (!Call || !CS.isCallee(UI))
continue;
// Call result not used?