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      1 ; RUN: llc < %s -march=x86-64 | grep lea | count 12
      2 
      3 ; This testcase was written to demonstrate an instruction-selection problem,
      4 ; however it also happens to expose a limitation in the DAGCombiner's
      5 ; expression reassociation which causes it to miss opportunities for
      6 ; constant folding due to the intermediate adds having multiple uses.
      7 ; The Reassociate pass has similar limitations. If these limitations are
      8 ; fixed, the test commands above will need to be updated to expect fewer
      9 ; lea instructions.
     10 
     11 @g0 = weak global [1000 x i32] zeroinitializer, align 32		; <[1000 x i32]*> [#uses=8]
     12 @g1 = weak global [1000 x i32] zeroinitializer, align 32		; <[1000 x i32]*> [#uses=7]
     13 
     14 define void @foo() {
     15 entry:
     16 	%tmp4 = load i32* getelementptr ([1000 x i32]* @g0, i32 0, i32 0)		; <i32> [#uses=1]
     17 	%tmp8 = load i32* getelementptr ([1000 x i32]* @g1, i32 0, i32 0)		; <i32> [#uses=1]
     18 	%tmp9 = add i32 %tmp4, 1		; <i32> [#uses=1]
     19 	%tmp10 = add i32 %tmp9, %tmp8		; <i32> [#uses=2]
     20 	store i32 %tmp10, i32* getelementptr ([1000 x i32]* @g0, i32 0, i32 1)
     21 	%tmp8.1 = load i32* getelementptr ([1000 x i32]* @g1, i32 0, i32 1)		; <i32> [#uses=1]
     22 	%tmp9.1 = add i32 %tmp10, 1		; <i32> [#uses=1]
     23 	%tmp10.1 = add i32 %tmp9.1, %tmp8.1		; <i32> [#uses=2]
     24 	store i32 %tmp10.1, i32* getelementptr ([1000 x i32]* @g0, i32 0, i32 2)
     25 	%tmp8.2 = load i32* getelementptr ([1000 x i32]* @g1, i32 0, i32 2)		; <i32> [#uses=1]
     26 	%tmp9.2 = add i32 %tmp10.1, 1		; <i32> [#uses=1]
     27 	%tmp10.2 = add i32 %tmp9.2, %tmp8.2		; <i32> [#uses=2]
     28 	store i32 %tmp10.2, i32* getelementptr ([1000 x i32]* @g0, i32 0, i32 3)
     29 	%tmp8.3 = load i32* getelementptr ([1000 x i32]* @g1, i32 0, i32 3)		; <i32> [#uses=1]
     30 	%tmp9.3 = add i32 %tmp10.2, 1		; <i32> [#uses=1]
     31 	%tmp10.3 = add i32 %tmp9.3, %tmp8.3		; <i32> [#uses=2]
     32 	store i32 %tmp10.3, i32* getelementptr ([1000 x i32]* @g0, i32 0, i32 4)
     33 	%tmp8.4 = load i32* getelementptr ([1000 x i32]* @g1, i32 0, i32 4)		; <i32> [#uses=1]
     34 	%tmp9.4 = add i32 %tmp10.3, 1		; <i32> [#uses=1]
     35 	%tmp10.4 = add i32 %tmp9.4, %tmp8.4		; <i32> [#uses=2]
     36 	store i32 %tmp10.4, i32* getelementptr ([1000 x i32]* @g0, i32 0, i32 5)
     37 	%tmp8.5 = load i32* getelementptr ([1000 x i32]* @g1, i32 0, i32 5)		; <i32> [#uses=1]
     38 	%tmp9.5 = add i32 %tmp10.4, 1		; <i32> [#uses=1]
     39 	%tmp10.5 = add i32 %tmp9.5, %tmp8.5		; <i32> [#uses=2]
     40 	store i32 %tmp10.5, i32* getelementptr ([1000 x i32]* @g0, i32 0, i32 6)
     41 	%tmp8.6 = load i32* getelementptr ([1000 x i32]* @g1, i32 0, i32 6)		; <i32> [#uses=1]
     42 	%tmp9.6 = add i32 %tmp10.5, 1		; <i32> [#uses=1]
     43 	%tmp10.6 = add i32 %tmp9.6, %tmp8.6		; <i32> [#uses=1]
     44 	store i32 %tmp10.6, i32* getelementptr ([1000 x i32]* @g0, i32 0, i32 7)
     45 	ret void
     46 }
     47 
     48