; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py UTC_ARGS: --version 4
; RUN: opt < %s -disable-output "-passes=print<scalar-evolution>" -scalar-evolution-classify-expressions=0 2>&1 | FileCheck %s

; ScalarEvolution should be able to understand the loop and eliminate the casts.

target datalayout = "e-p:32:32:32-p1:16:16:16-p2:8:8:8-p4:64:64:64-n16:32:64"

define void @foo(ptr addrspace(1) nocapture %d, i32 %n) nounwind {
;
; CHECK-LABEL: 'foo'
; CHECK-NEXT:  Determining loop execution counts for: @foo
; CHECK-NEXT:  Loop %bb: backedge-taken count is (-1 + %n)
; CHECK-NEXT:  Loop %bb: constant max backedge-taken count is i32 2147483646
; CHECK-NEXT:  Loop %bb: symbolic max backedge-taken count is (-1 + %n)
; CHECK-NEXT:  Loop %bb: Trip multiple is 1
;
entry:
	%0 = icmp sgt i32 %n, 0		; <i1> [#uses=1]
	br i1 %0, label %bb.nph, label %return

bb.nph:		; preds = %entry
	br label %bb

bb:		; preds = %bb1, %bb.nph
	%i.02 = phi i32 [ %5, %bb1 ], [ 0, %bb.nph ]		; <i32> [#uses=2]
	%p.01 = phi i8 [ %4, %bb1 ], [ -1, %bb.nph ]		; <i8> [#uses=2]
	%1 = sext i8 %p.01 to i32		; <i32> [#uses=1]
	%2 = sext i32 %i.02 to i64		; <i64> [#uses=1]
	%3 = getelementptr i32, ptr addrspace(1) %d, i64 %2		; <ptr> [#uses=1]
	store i32 %1, ptr addrspace(1) %3, align 4
	%4 = add i8 %p.01, 1		; <i8> [#uses=1]
	%5 = add i32 %i.02, 1		; <i32> [#uses=2]
	br label %bb1

bb1:		; preds = %bb
	%6 = icmp slt i32 %5, %n		; <i1> [#uses=1]
	br i1 %6, label %bb, label %bb1.return_crit_edge

bb1.return_crit_edge:		; preds = %bb1
	br label %return

return:		; preds = %bb1.return_crit_edge, %entry
	ret void
}

define void @test(ptr addrspace(1) %a, i32 %n) nounwind {
;
; CHECK-LABEL: 'test'
; CHECK-NEXT:  Determining loop execution counts for: @test
; CHECK-NEXT:  Loop %for.body: backedge-taken count is (-1 + (zext i32 %n to i64))<nsw>
; CHECK-NEXT:  Loop %for.body: constant max backedge-taken count is i64 2147483646
; CHECK-NEXT:  Loop %for.body: symbolic max backedge-taken count is (-1 + (zext i32 %n to i64))<nsw>
; CHECK-NEXT:  Loop %for.body: Trip multiple is 1
;
entry:
  %cmp1 = icmp sgt i32 %n, 0
  br i1 %cmp1, label %for.body.lr.ph, label %for.end

for.body.lr.ph:                                   ; preds = %entry
  %tmp = zext i32 %n to i64
  br label %for.body

for.body:                                         ; preds = %for.body, %for.body.lr.ph
  %indvar = phi i64 [ %indvar.next, %for.body ], [ 0, %for.body.lr.ph ]
  %arrayidx = getelementptr i8, ptr addrspace(1) %a, i64 %indvar
  store i8 0, ptr addrspace(1) %arrayidx, align 1
  %indvar.next = add i64 %indvar, 1
  %exitcond = icmp ne i64 %indvar.next, %tmp
  br i1 %exitcond, label %for.body, label %for.cond.for.end_crit_edge

for.cond.for.end_crit_edge:                       ; preds = %for.body
  br label %for.end

for.end:                                          ; preds = %for.cond.for.end_crit_edge, %entry
  ret void
}