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; RUN: opt < %s -S -mtriple=powerpc64-unknown-linux-gnu -mcpu=a2 -loop-unroll | FileCheck %s
define void @unroll_opt_for_size() nounwind optsize {
entry:
br label %loop
loop:
%iv = phi i32 [ 0, %entry ], [ %inc, %loop ]
%inc = add i32 %iv, 1
%exitcnd = icmp uge i32 %inc, 1024
br i1 %exitcnd, label %exit, label %loop
exit:
ret void
}
; CHECK-LABEL: @unroll_opt_for_size
; CHECK: add
; CHECK-NEXT: add
; CHECK-NEXT: add
; CHECK: icmp
define i32 @test(i32* nocapture %a, i32 %n) nounwind uwtable readonly {
entry:
%cmp1 = icmp eq i32 %n, 0
br i1 %cmp1, label %for.end, label %for.body
for.body: ; preds = %for.body, %entry
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%sum.02 = phi i32 [ %add, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds i32* %a, i64 %indvars.iv
%0 = load i32* %arrayidx, align 4
%add = add nsw i32 %0, %sum.02
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
%sum.0.lcssa = phi i32 [ 0, %entry ], [ %add, %for.body ]
ret i32 %sum.0.lcssa
}
; CHECK-LABEL: @test
; CHECK: for.body.prol{{.*}}:
; CHECK: for.body:
; CHECK: br i1 %exitcond.7, label %for.end.loopexit{{.*}}, label %for.body
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