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; RUN: opt -mtriple=thumbv8.1m.main-none-none-eabi -passes=hardware-loops %s -o - | FileCheck %s
@g = common local_unnamed_addr global ptr null, align 4
; CHECK-LABEL: counter_too_large
; CHECK-NOT: call void @llvm.set.loop.iterations
; CHECK-NOT: call i32 @llvm.loop.decrement
define i32 @counter_too_large(i64 %n) {
entry:
%cmp7 = icmp eq i64 %n, 0
br i1 %cmp7, label %while.end, label %while.body.lr.ph
while.body.lr.ph:
%0 = load ptr, ptr @g, align 4
br label %while.body
while.body:
%i.09 = phi i64 [ 0, %while.body.lr.ph ], [ %inc1, %while.body ]
%res.08 = phi i32 [ 0, %while.body.lr.ph ], [ %add, %while.body ]
%idxprom = trunc i64 %i.09 to i32
%arrayidx = getelementptr inbounds i32, ptr %0, i32 %idxprom
%1 = load i32, ptr %arrayidx, align 4
%add = add nsw i32 %1, %res.08
%inc1 = add nuw i64 %i.09, 1
%cmp = icmp ult i64 %inc1, %n
br i1 %cmp, label %while.body, label %while.end.loopexit
while.end.loopexit:
br label %while.end
while.end:
%res.0.lcssa = phi i32 [ 0, %entry ], [ %add, %while.end.loopexit ]
ret i32 %res.0.lcssa
}
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