llvm-mirror/test/CodeGen/AVR/ctpop.ll
Dylan McKay 391ac08575 [AVR] Add a selection of CodeGen tests
Summary: This adds all of the CodeGen tests which currently pass.

Reviewers: arsenm, kparzysz

Subscribers: japaric, wdng

Differential Revision: https://reviews.llvm.org/D26388

llvm-svn: 286418
2016-11-09 23:46:52 +00:00

31 lines
992 B
LLVM

; 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