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...om the c interface it looks ok to me but the optimizer is returning the wrong variable I don't know what to do to avoid it? source language input Procedure TRU(a,b) Protected x,y,c Repeat y=0 Repeat c+x+y y+1 Until y >= b x+1 Until x >= a ProcedureReturn c EndProcedure output generated via the c Interface define i32 @TRU(i32 %a, i32 %b) { Entry: %a1 = alloca i32 store i32 %a, i32* %a1 %b2 = alloca i32 store i32 %b, i32* %b2 %c = alloca i32 store i32 0, i32* %c %x = alloca i32 store i32 0, i32* %x %y = alloca i32 store i32 0, i32* %y br l...

...y seeing different behaviour for any particular set of inputs on some target? Nick > > source language input > > Procedure TRU(a,b) > Protected x,y,c > Repeat > y=0 > Repeat > c+x+y > y+1 > Until y >= b > x+1 > Until x >= a > ProcedureReturn c > EndProcedure > > output generated via the c Interface > > define i32 @TRU(i32 %a, i32 %b) { > Entry: > %a1 = alloca i32 > store i32 %a, i32* %a1 > %b2 = alloca i32 > store i32 %b, i32* %b2 > %c = alloca i32 > store i32 0, i32* %c > %x = alloca i32 > store i32 0, i32* %x &g...

...,ElseBB)// //Ewhile LLVMPositionBuilderAtEnd(Builder, EWhileBB) CR = LLVMBuildLoad(Builder,C,"CR")// //ProcedureReturn C LLVMBuildRet(Builder, CR) //Don't forget to free the builder. LLVMDisposeBuilder(Builder) //Return the function ref ProcedureReturn Fib2 EndProcedure -- Andrew Ferguson

...%%%%%%% DSWP Algorithm %%%%%%%%%%%% DSWP_Procedure(L) G = build_dependence_graph(L); SCCs = find_SCCs(G) If (|SCCs| == 1) return ; EndIf DAG_SCC = coalesce_SCCs(G, SCCs) P = TPP_algorithm(DAG_SCC, L) If (|P| == 1) return ; EndIf split_code_into_loops(L, P) insert_necessary_flows(L,P) EndProcedure %%%%%%%% DSWP Algorithm %%%%%%%%%%%% This procedure receive as input the loop L in an intermediate representation and modifies it as a side-effect. The first step in the algorithm is construct the Program Dependence Graph (PDG)[2], this is a graph that represents all data, memory and control depen...