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annotate test/CodeGen/PowerPC/ifcvt.ll @ 121:803732b1fca8

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LLVM 5.0
author kono
date Fri, 27 Oct 2017 17:07:41 +0900
parents 95c75e76d11b
children
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95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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1 ; RUN: llc < %s -mtriple=powerpc64-unknown-linux-gnu -mcpu=pwr7 -verify-machineinstrs | FileCheck %s
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2 ; RUN: llc < %s -mtriple=powerpc64-unknown-linux-gnu -mcpu=pwr7 -verify-machineinstrs -ppc-gen-isel=false | FileCheck --check-prefix=CHECK-NO-ISEL %s
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3 target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-f128:128:128-v128:128:128-n32:64"
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4 target triple = "powerpc64-unknown-linux-gnu"
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6 define i32 @test(i32 %a, i32 %b, i32 %c, i32 %d) {
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7 entry:
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8 %sext82 = shl i32 %d, 16
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9 %conv29 = ashr exact i32 %sext82, 16
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10 %cmp = icmp slt i32 %sext82, 0
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11 br i1 %cmp, label %cond.true, label %cond.false
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13 cond.true: ; preds = %sw.epilog
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14 %and33 = and i32 %conv29, 32767
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15 %sub34 = sub nsw i32 %a, %and33
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16 br label %cond.end
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18 cond.false: ; preds = %sw.epilog
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19 %add37 = add nsw i32 %conv29, %a
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20 br label %cond.end
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22 ; CHECK-LABEL: @test
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23 ; CHECK-NO-ISEL-LABEL: @test
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24 ; CHECK: add [[REG:[0-9]+]],
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25 ; CHECK: subf [[REG2:[0-9]+]],
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26 ; CHECK: isel {{[0-9]+}}, [[REG]], [[REG2]],
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27 ; CHECK-NO-ISEL: bc 12, 1, [[TRUE:.LBB[0-9]+]]
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28 ; CHECK-NO-ISEL-NEXT: b [[SUCCESSOR:.LBB[0-9]+]]
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29 ; CHECK-NO-ISEL: [[TRUE]]
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30 ; CHECK-NO-ISEL-NEXT: addi 5, 6, 0
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31 ; CHECK-NO-ISEL: extsh 5, 5
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32 ; CHECK-NO-ISEL-NEXT: add 3, 3, 5
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33 ; CHECK-NO-ISEL-NEXT: blr
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35 cond.end: ; preds = %cond.false, %cond.true
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36 %cond = phi i32 [ %sub34, %cond.true ], [ %add37, %cond.false ]
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37 %sext83 = shl i32 %cond, 16
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38 %conv39 = ashr exact i32 %sext83, 16
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39 %add41 = sub i32 %b, %a
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40 %sub43 = add i32 %add41, %conv39
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41 ret i32 %sub43
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42 }
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