| ; RUN: llc -march=hexagon -mcpu=hexagonv5 < %s | FileCheck %s | |
| ; We shouldn't generate a hardware loop in this case because the initial | |
| ; value may be zero, which means the endloop instruction will not decrement | |
| ; the loop counter, and the loop will execute only once. | |
| ; CHECK-NOT: loop0 | |
| define void @foo(i32 %count, i32 %v) #0 { | |
| entry: | |
| br label %do.body | |
| do.body: | |
| %count.addr.0 = phi i32 [ %count, %entry ], [ %dec, %do.body ] | |
| tail call void asm sideeffect "nop", ""() #1 | |
| %dec = add i32 %count.addr.0, -1 | |
| %cmp = icmp eq i32 %dec, 0 | |
| br i1 %cmp, label %do.end, label %do.body | |
| do.end: | |
| ret void | |
| } |