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; RUN: llc < %s -march=avr | FileCheck %s
define i8 @count_population(i8) unnamed_addr {
entry-block:
%1 = tail call i8 @llvm.ctpop.i8(i8 %0)
ret i8 %1
}
declare i8 @llvm.ctpop.i8(i8)
; CHECK-LABEL: count_population:
; CHECK: mov [[SCRATCH:r[0-9]+]], [[RESULT:r[0-9]+]]
; CHECK: lsr {{.*}}[[SCRATCH]]
; CHECK: andi {{.*}}[[SCRATCH]], 85
; CHECK: sub {{.*}}[[RESULT]], {{.*}}[[SCRATCH]]
; CHECK: mov {{.*}}[[SCRATCH]], {{.*}}[[RESULT]]
; CHECK: andi {{.*}}[[SCRATCH]], 51
; CHECK: lsr {{.*}}[[RESULT]]
; CHECK: lsr {{.*}}[[RESULT]]
; CHECK: andi {{.*}}[[RESULT]], 51
; CHECK: add {{.*}}[[RESULT]], {{.*}}[[SCRATCH]]
; CHECK: mov {{.*}}[[SCRATCH]], {{.*}}[[RESULT]]
; CHECK: lsr {{.*}}[[SCRATCH]]
; CHECK: lsr {{.*}}[[SCRATCH]]
; CHECK: lsr {{.*}}[[SCRATCH]]
; CHECK: lsr {{.*}}[[SCRATCH]]
; CHECK: add {{.*}}[[SCRATCH]], {{.*}}[[RESULT]]
; CHECK: andi {{.*}}[[SCRATCH]], 15
; CHECK: mov {{.*}}[[RESULT]], {{.*}}[[SCRATCH]]
; CHECK: ret
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