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; REQUIRES: asserts
; RUN: opt < %s -loop-unswitch -disable-output -stats 2>&1| FileCheck %s
; RUN: opt < %s -loop-unswitch -enable-mssa-loop-dependency=true -verify-memoryssa -disable-output -stats 2>&1| FileCheck %s
; Check the select statement in the loop will be unswitched.
; CHECK: 1 loop-unswitch - Number of selects unswitched
define i32 @test(i1 zeroext %x, i32 %a) local_unnamed_addr #0 {
entry:
br label %while.cond
while.cond: ; preds = %while.body, %entry
%i.0 = phi i32 [ 0, %entry ], [ %inc, %while.body ]
%s.0 = phi i32 [ %a, %entry ], [ %add, %while.body ]
%cmp = icmp slt i32 %i.0, 10000
br i1 %cmp, label %while.body, label %while.end
while.body: ; preds = %while.cond
%cond = select i1 %x, i32 %a, i32 %i.0
%add = add nsw i32 %s.0, %cond
%inc = add nsw i32 %i.0, 1
br label %while.cond
while.end: ; preds = %while.cond
%s.0.lcssa = phi i32 [ %s.0, %while.cond ]
ret i32 %s.0.lcssa
}
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