Mercurial > hg > CbC > CbC_llvm
view test/CodeGen/AArch64/or-combine.ll @ 100:7d135dc70f03 LLVM 3.9
LLVM 3.9
author | Miyagi Mitsuki <e135756@ie.u-ryukyu.ac.jp> |
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date | Tue, 26 Jan 2016 22:53:40 +0900 |
parents | 60c9769439b8 |
children |
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; RUN: llc -mtriple=aarch64-linux-gnu -o - %s | FileCheck %s define i32 @test_consts(i32 %in) { ; CHECK-LABEL: test_consts: ; CHECK-NOT: bfxil ; CHECK-NOT: and ; CHECK-NOT: orr ; CHECK: ret %lo = and i32 %in, 65535 %hi = and i32 %in, -65536 %res = or i32 %lo, %hi ret i32 %res } define i32 @test_generic(i32 %in, i32 %mask1, i32 %mask2) { ; CHECK-LABEL: test_generic: ; CHECK: orr [[FULL_MASK:w[0-9]+]], w1, w2 ; CHECK: and w0, w0, [[FULL_MASK]] %lo = and i32 %in, %mask1 %hi = and i32 %in, %mask2 %res = or i32 %lo, %hi ret i32 %res } ; In this case the transformation isn't profitable, since %lo and %hi ; are used more than once. define [3 x i32] @test_reuse(i32 %in, i32 %mask1, i32 %mask2) { ; CHECK-LABEL: test_reuse: ; CHECK-DAG: and w1, w0, w1 ; CHECK-DAG: and w2, w0, w2 ; CHECK-DAG: orr w0, w1, w2 %lo = and i32 %in, %mask1 %hi = and i32 %in, %mask2 %recombine = or i32 %lo, %hi %res.tmp0 = insertvalue [3 x i32] undef, i32 %recombine, 0 %res.tmp1 = insertvalue [3 x i32] %res.tmp0, i32 %lo, 1 %res = insertvalue [3 x i32] %res.tmp1, i32 %hi, 2 ret [3 x i32] %res }