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      1 ; RUN: opt < %s -loop-simplify -loop-rotate -instcombine -indvars -S -verify-loop-info -verify-dom-info > %t
      2 ; RUN: not grep sext %t
      3 ; RUN: grep "phi i64" %t | count 1
      4 
      5 ; Loopsimplify should be able to merge the two loop exits
      6 ; into one, so that loop rotate can rotate the loop, so
      7 ; that indvars can promote the induction variable to i64
      8 ; without needing casts.
      9 
     10 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n32:64"
     11 
     12 define float @t(float* %pTmp1, float* %peakWeight, i32 %bandEdgeIndex) nounwind {
     13 entry:
     14 	%t0 = load float* %peakWeight, align 4		; <float> [#uses=1]
     15 	br label %bb1
     16 
     17 bb:		; preds = %bb2
     18 	%t1 = sext i32 %hiPart.0 to i64		; <i64> [#uses=1]
     19 	%t2 = getelementptr float* %pTmp1, i64 %t1		; <float*> [#uses=1]
     20 	%t3 = load float* %t2, align 4		; <float> [#uses=1]
     21 	%t4 = fadd float %t3, %distERBhi.0		; <float> [#uses=1]
     22 	%t5 = add i32 %hiPart.0, 1		; <i32> [#uses=2]
     23 	%t6 = sext i32 %t5 to i64		; <i64> [#uses=1]
     24 	%t7 = getelementptr float* %peakWeight, i64 %t6		; <float*> [#uses=1]
     25 	%t8 = load float* %t7, align 4		; <float> [#uses=1]
     26 	%t9 = fadd float %t8, %peakCount.0		; <float> [#uses=1]
     27 	br label %bb1
     28 
     29 bb1:		; preds = %bb, %entry
     30 	%peakCount.0 = phi float [ %t0, %entry ], [ %t9, %bb ]		; <float> [#uses=2]
     31 	%hiPart.0 = phi i32 [ 0, %entry ], [ %t5, %bb ]		; <i32> [#uses=3]
     32 	%distERBhi.0 = phi float [ 0.000000e+00, %entry ], [ %t4, %bb ]		; <float> [#uses=3]
     33 	%t10 = fcmp uge float %distERBhi.0, 2.500000e+00		; <i1> [#uses=1]
     34 	br i1 %t10, label %bb3, label %bb2
     35 
     36 bb2:		; preds = %bb1
     37 	%t11 = add i32 %bandEdgeIndex, -1		; <i32> [#uses=1]
     38 	%t12 = icmp sgt i32 %t11, %hiPart.0		; <i1> [#uses=1]
     39 	br i1 %t12, label %bb, label %bb3
     40 
     41 bb3:		; preds = %bb2, %bb1
     42 	%t13 = fdiv float %peakCount.0, %distERBhi.0		; <float> [#uses=1]
     43 	ret float %t13
     44 }
     45