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llvm-mirror/test/CodeGen/AVR/PR31345.ll
Dylan McKay a840a5bb5c [AVR] Optimize 16-bit ANDs with '1'
Summary: Fixes PR 31345

Reviewers: dylanmckay

Subscribers: fhahn, llvm-commits

Differential Revision: https://reviews.llvm.org/D28186

llvm-svn: 290778
2016-12-31 01:07:14 +00:00

52 lines
1.2 KiB
LLVM

; RUN: llc < %s -march=avr | FileCheck %s
; Unit test for: PR 31345
define i16 @and16_reg_imm_0xff00(i16 %a) {
; CHECK-LABEL: and16_reg_imm_0xff00
; CHECK: andi {{r[0-9]+}}, 0
; CHECK-NOT: andi {{r[0-9]+}}, 255
%result = and i16 %a, 65280
ret i16 %result
}
define i16 @and16_reg_imm_0xffb3(i16 %a) {
; CHECK-LABEL: and16_reg_imm_0xffb3
; CHECK: andi {{r[0-9]+}}, 179
; CHECK-NOT: andi {{r[0-9]+}}, 255
%result = and i16 %a, 65459
ret i16 %result
}
define i16 @and16_reg_imm_0x00ff(i16 %a) {
; CHECK-LABEL: and16_reg_imm_0x00ff
; CHECK-NOT: andi {{r[0-9]+}}, 255
; CHECK: andi {{r[0-9]+}}, 0
%result = and i16 %a, 255
ret i16 %result
}
define i16 @and16_reg_imm_0xb3ff(i16 %a) {
; CHECK-LABEL: and16_reg_imm_0xb3ff
; CHECK-NOT: andi {{r[0-9]+}}, 255
; CHECK: andi {{r[0-9]+}}, 179
%result = and i16 %a, 46079
ret i16 %result
}
define i16 @and16_reg_imm_0xffff(i16 %a) {
; CHECK-LABEL: and16_reg_imm_0xffff
; CHECK-NOT: andi {{r[0-9]+}}, 255
; CHECK-NOT: andi {{r[0-9]+}}, 255
%result = and i16 %a, 65535
ret i16 %result
}
define i16 @and16_reg_imm_0xabcd(i16 %a) {
; CHECK-LABEL: and16_reg_imm_0xabcd
; CHECK: andi {{r[0-9]+}}, 205
; CHECK: andi {{r[0-9]+}}, 171
%result = and i16 %a, 43981
ret i16 %result
}