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	git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47784 91177308-0d34-0410-b5e6-96231b3b80d8
		
			
				
	
	
		
			104 lines
		
	
	
		
			3.8 KiB
		
	
	
	
		
			LLVM
		
	
	
	
	
	
			
		
		
	
	
			104 lines
		
	
	
		
			3.8 KiB
		
	
	
	
		
			LLVM
		
	
	
	
	
	
| ; RUN: llvm-as < %s | llvm-dis > %t1.ll
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| ; RUN: llvm-as %t1.ll -o - | llvm-dis > %t2.ll
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| ; RUN: diff %t1.ll %t2.ll
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| 
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| ; This file contains the output from the following compiled C code:
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| ; typedef struct list {
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| ;   struct list *Next;
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| ;   int Data;
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| ; } list;
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| ;
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| ; // Iterative insert fn
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| ; void InsertIntoListTail(list **L, int Data) {
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| ;   while (*L)
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| ;     L = &(*L)->Next;
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| ;   *L = (list*)malloc(sizeof(list));
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| ;   (*L)->Data = Data;
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| ;   (*L)->Next = 0;
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| ; }
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| ;
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| ; // Recursive list search fn
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| ; list *FindData(list *L, int Data) {
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| ;   if (L == 0) return 0;
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| ;   if (L->Data == Data) return L;
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| ;   return FindData(L->Next, Data);
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| ; }
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| ;
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| ; void DoListStuff() {
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| ;   list *MyList = 0;
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| ;   InsertIntoListTail(&MyList, 100);
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| ;   InsertIntoListTail(&MyList, 12);
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| ;   InsertIntoListTail(&MyList, 42);
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| ;   InsertIntoListTail(&MyList, 1123);
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| ;   InsertIntoListTail(&MyList, 1213);
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| ;
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| ;   if (FindData(MyList, 75)) foundIt();
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| ;   if (FindData(MyList, 42)) foundIt();
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| ;   if (FindData(MyList, 700)) foundIt();
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| ; }
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| 
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| %list = type { %list*, i32 }
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| 
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| declare i8* @malloc(i32)
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| 
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| define void @InsertIntoListTail(%list** %L, i32 %Data) {
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| bb1:
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|         %reg116 = load %list** %L               ; <%list*> [#uses=1]
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|         %cast1004 = inttoptr i64 0 to %list*            ; <%list*> [#uses=1]
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|         %cond1000 = icmp eq %list* %reg116, %cast1004           ; <i1> [#uses=1]
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|         br i1 %cond1000, label %bb3, label %bb2
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| 
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| bb2:            ; preds = %bb2, %bb1
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|         %reg117 = phi %list** [ %reg118, %bb2 ], [ %L, %bb1 ]           ; <%list**> [#uses=1]
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|         %cast1010 = bitcast %list** %reg117 to %list***         ; <%list***> [#uses=1]
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|         %reg118 = load %list*** %cast1010               ; <%list**> [#uses=3]
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|         %reg109 = load %list** %reg118          ; <%list*> [#uses=1]
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|         %cast1005 = inttoptr i64 0 to %list*            ; <%list*> [#uses=1]
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|         %cond1001 = icmp ne %list* %reg109, %cast1005           ; <i1> [#uses=1]
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|         br i1 %cond1001, label %bb2, label %bb3
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| 
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| bb3:            ; preds = %bb2, %bb1
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|         %reg119 = phi %list** [ %reg118, %bb2 ], [ %L, %bb1 ]           ; <%list**> [#uses=1]
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|         %cast1006 = bitcast %list** %reg119 to i8**             ; <i8**> [#uses=1]
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|         %reg111 = call i8* @malloc( i32 16 )            ; <i8*> [#uses=3]
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|         store i8* %reg111, i8** %cast1006
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|         %reg111.upgrd.1 = ptrtoint i8* %reg111 to i64           ; <i64> [#uses=1]
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|         %reg1002 = add i64 %reg111.upgrd.1, 8           ; <i64> [#uses=1]
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|         %reg1002.upgrd.2 = inttoptr i64 %reg1002 to i8*         ; <i8*> [#uses=1]
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|         %cast1008 = bitcast i8* %reg1002.upgrd.2 to i32*                ; <i32*> [#uses=1]
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|         store i32 %Data, i32* %cast1008
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|         %cast1003 = inttoptr i64 0 to i64*              ; <i64*> [#uses=1]
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|         %cast1009 = bitcast i8* %reg111 to i64**                ; <i64**> [#uses=1]
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|         store i64* %cast1003, i64** %cast1009
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|         ret void
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| }
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| 
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| define %list* @FindData(%list* %L, i32 %Data) {
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| bb1:
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|         br label %bb2
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| 
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| bb2:            ; preds = %bb6, %bb1
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|         %reg115 = phi %list* [ %reg116, %bb6 ], [ %L, %bb1 ]            ; <%list*> [#uses=4]
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|         %cast1014 = inttoptr i64 0 to %list*            ; <%list*> [#uses=1]
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|         %cond1011 = icmp ne %list* %reg115, %cast1014           ; <i1> [#uses=1]
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|         br i1 %cond1011, label %bb4, label %bb3
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| 
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| bb3:            ; preds = %bb2
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|         ret %list* null
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| 
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| bb4:            ; preds = %bb2
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|         %idx = getelementptr %list* %reg115, i64 0, i32 1               ; <i32*> [#uses=1]
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|         %reg111 = load i32* %idx                ; <i32> [#uses=1]
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|         %cond1013 = icmp ne i32 %reg111, %Data          ; <i1> [#uses=1]
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|         br i1 %cond1013, label %bb6, label %bb5
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| 
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| bb5:            ; preds = %bb4
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|         ret %list* %reg115
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| 
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| bb6:            ; preds = %bb4
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|         %idx2 = getelementptr %list* %reg115, i64 0, i32 0              ; <%list**> [#uses=1]
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|         %reg116 = load %list** %idx2            ; <%list*> [#uses=1]
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|         br label %bb2
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| }
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| 
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