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1; RUN: llc -march=hexagon -mcpu=hexagonv5 < %s | FileCheck %s
2
3; We shouldn't generate a hardware loop in this case because the initial
4; value may be zero, which means the endloop instruction will not decrement
5; the loop counter, and the loop will execute only once.
6
7; CHECK-NOT: loop0
8
9define void @foo(i32 %count, i32 %v) #0 {
10entry:
11  br label %do.body
12
13do.body:
14  %count.addr.0 = phi i32 [ %count, %entry ], [ %dec, %do.body ]
15  tail call void asm sideeffect "nop", ""() #1
16  %dec = add i32 %count.addr.0, -1
17  %cmp = icmp eq i32 %dec, 0
18  br i1 %cmp, label %do.end, label %do.body
19
20do.end:
21  ret void
22}
23