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annotate test/CodeGen/AArch64/arm64-vselect.ll @ 117:facf19d07cd9

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author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Wed, 24 Aug 2016 20:10:41 +0900
parents 54457678186b
children 1172e4bd9c6f
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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1 ; RUN: llc < %s -march=arm64 -aarch64-neon-syntax=apple | FileCheck %s
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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2
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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3 ;CHECK: @func63
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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4 ;CHECK: cmeq.4h v0, v0, v1
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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5
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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6 ;FIXME: currently, it will generate 3 instructions:
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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7 ; ushll.4s v0, v0, #0
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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8 ; shl.4s v0, v0, #31
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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9 ; sshr.4s v0, v0, #31
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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10 ;But these instrucitons can be optimized into 1 instruction:
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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11 ; sshll.4s v0, v0, #0
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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12
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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13 ;CHECK: bsl.16b v0, v2, v3
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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14 ;CHECK: str q0, [x0]
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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15 ;CHECK: ret
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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16
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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17 %T0_63 = type <4 x i16>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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18 %T1_63 = type <4 x i32>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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19 %T2_63 = type <4 x i1>
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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20 define void @func63(%T1_63* %out, %T0_63 %v0, %T0_63 %v1, %T1_63 %v2, %T1_63 %v3) {
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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21 %cond = icmp eq %T0_63 %v0, %v1
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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22 %r = select %T2_63 %cond, %T1_63 %v2, %T1_63 %v3
54457678186b LLVM 3.6
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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23 store %T1_63 %r, %T1_63* %out
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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24 ret void
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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25 }