1; RUN: llc -mtriple=aarch64-linux-gnu -o - %s | FileCheck %s 2 3define i32 @test_consts(i32 %in) { 4; CHECK-LABEL: test_consts: 5; CHECK-NOT: bfxil 6; CHECK-NOT: and 7; CHECK-NOT: orr 8; CHECK: ret 9 10 %lo = and i32 %in, 65535 11 %hi = and i32 %in, -65536 12 %res = or i32 %lo, %hi 13 ret i32 %res 14} 15 16define i32 @test_generic(i32 %in, i32 %mask1, i32 %mask2) { 17; CHECK-LABEL: test_generic: 18; CHECK: orr [[FULL_MASK:w[0-9]+]], w1, w2 19; CHECK: and w0, w0, [[FULL_MASK]] 20 21 %lo = and i32 %in, %mask1 22 %hi = and i32 %in, %mask2 23 %res = or i32 %lo, %hi 24 ret i32 %res 25} 26 27; In this case the transformation isn't profitable, since %lo and %hi 28; are used more than once. 29define [3 x i32] @test_reuse(i32 %in, i32 %mask1, i32 %mask2) { 30; CHECK-LABEL: test_reuse: 31; CHECK-DAG: and w1, w0, w1 32; CHECK-DAG: and w2, w0, w2 33; CHECK-DAG: orr w0, w1, w2 34 35 %lo = and i32 %in, %mask1 36 %hi = and i32 %in, %mask2 37 %recombine = or i32 %lo, %hi 38 39 %res.tmp0 = insertvalue [3 x i32] undef, i32 %recombine, 0 40 %res.tmp1 = insertvalue [3 x i32] %res.tmp0, i32 %lo, 1 41 %res = insertvalue [3 x i32] %res.tmp1, i32 %hi, 2 42 43 ret [3 x i32] %res 44} 45