Added expected decomposed sequence in comments, plus a couple of new cases.

llvm-svn: 3231

llvm/test/Regression/Transforms/DecomposeMultiDimRefs/multidim.ll

@@ -1,3 +1,5 @@
+; RUN: as < %s | opt -f -lowerrefs -o Output/%s.bc
+; 
 	%Flat_struct = type { sbyte, float }
 	%Flat_t = type { sbyte, float }
 	%Mixed_struct = type { int, [10 x double], [10 x [10 x double]], [10 x { sbyte, float }] }
@@ -14,6 +16,17 @@ implementation
 int "test"([20 x [10 x [5 x int]]] * %A)
 begin
 	%i = load [20 x [10 x [5 x int]]] * %A, uint 1, uint 2, uint 3, uint 4
+
+	;; same as above but via a GEP
+	%iptr = getelementptr [20 x [10 x [5 x int]]] * %A, uint 1, uint 2, uint 3, uint 4
+	%ii= load int* %iptr
+
+	;; EXPECTED RESULT: decomposed indices for above LOAD or GEP
+	;; %ptr1 = getelementptr [20 x [10 x [5 x int]]] * %A,            uint 1
+	;; %ptr2 = getelementptr [20 x [10 x [5 x int]]] * %ptr1, uint 0, uint 2
+	;; %ptr3 = getelementptr       [10 x [5 x int]]  * %ptr2, uint 0, uint 3
+	;; %iii  = load                      [5 x int]   * %ptr3, uint 0, uint 4
+
 	ret int %i
 end
 
@@ -22,9 +35,22 @@ begin
 bb0:					;[#uses=2]
 	%reg112 = add int %base, 1		; <int> [#uses=1]
 	%reg164-idxcast = cast int %reg112 to uint		; <uint> [#uses=1]
+
+	;; Store to a structure field
 	store sbyte 81, %Mixed_struct * %M, uint 0, ubyte 3, uint %reg164-idxcast, ubyte 0
 
+	;; EXPECTED RESULT: decomposed indices for above STORE
+	;; %ptr1 = getelementptr %Mixed_struct * %M,             uint 0, ubyte 3
+	;; %ptr2 = getelementptr [10 x { sbyte, float }]* %ptr1, uint 0, uint %reg164-idxcast 
+	;; store sbyte 81, {sbyte,float}* %ptr2, uint 0, ubyte 0
+
+	;; Store to an array field within a structure
 	store double 2.17, %Mixed_struct * %M, uint 0, ubyte 1, uint %reg164-idxcast
+
+	;; EXPECTED RESULT: decomposed indices for above STORE
+	;; %ptr1 = getelementptr %Mixed_struct * %M, uint 0, ubyte 1
+	;; store double 2.17, [10 x double]* %ptr1, uint 0, uint %reg164-idxcast
+
 	ret void
 end
 
@@ -39,15 +65,21 @@ bb0:					;[#uses=1]
     	%trace  = call int (sbyte *, ...) * %printf( sbyte * %trstrP )
 
 	%eltVal = call int %ArrayRef([100 x int]* %ArraySlice, uint 8, uint 12)
-;;	ret int %eltVal
+	ret int %eltVal
 
-	ret int 0
+;;	ret int 0
 end
 
 int "ArrayRef"([100 x int] * %Array, uint %I, uint %J)
 begin
 bb0:					;[#uses=3]
-	%reg120 = getelementptr [100 x int] * %Array, uint %I		; <[100 x int] *> [#uses=1]
+        %reg121 = load [100 x int]* %Array, uint %I, uint %J	; <int> [#uses=1]			
-	%reg121 = load [100 x int] * %reg120, uint 0, uint %J		; <int> [#uses=1]
 	ret int %reg121;
 end
+
+sbyte "PtrRef"(sbyte** %argv, uint %I, uint %J)
+begin
+bb0:					;[#uses=3]
+	%reg222 = load sbyte** %argv, uint %I, uint %J		; <sbyte> [#uses=1]
+	ret sbyte %reg222;
+end