Merge rust-lang#77

77: ykllvm no longer needs to treat promote calls specially. r=ltratt a=vext01



Co-authored-by: Edd Barrett <vext01@gmail.com>

Author: bors[bot]

llvm/lib/Transforms/Yk/StackMaps.cpp

@@ -28,7 +28,6 @@ void initializeYkStackmapsPass(PassRegistry &);
 } // namespace llvm
 
 namespace {
-const char *YkPromote = "__ykllvm_recognised_promote";
 
 class YkStackmaps : public ModulePass {
 public:
@@ -63,15 +62,7 @@ class YkStackmaps : public ModulePass {
             // emit a stackmap in those cases too.
             if (!CI.isIndirectCall() && CI.getCalledFunction()->isIntrinsic())
               continue;
-            std::vector<Value *> Lives = LA.getLiveVarsBefore(&I);
-            // Value guards for variable promotions, require us to also
-            // track the value generated by the call.
-            if (CI.getCalledFunction() &&
-                CI.getCalledFunction()->getName() == YkPromote) {
-              Value *RV = cast<Value>(&CI);
-              Lives.push_back(RV);
-            }
-            SMCalls.insert({&I, Lives});
+            SMCalls.insert({&I, LA.getLiveVarsBefore(&I)});
           } else if ((isa<BranchInst>(I) &&
                       cast<BranchInst>(I).isConditional()) ||
                      isa<SwitchInst>(I)) {