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annotate test/CodeGen/X86/memcpy.ll @ 33:e4204d083e25

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LLVM 3.5
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Thu, 12 Dec 2013 14:32:10 +0900
parents 95c75e76d11b
children afa8332a0e37
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
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1 ; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu -mcpu=core2 | FileCheck %s -check-prefix=LINUX
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2 ; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=core2 | FileCheck %s -check-prefix=DARWIN
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3
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4 declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind
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5
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6
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7 ; Variable memcpy's should lower to calls.
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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8 define i8* @test1(i8* %a, i8* %b, i64 %n) nounwind {
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9 entry:
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10 tail call void @llvm.memcpy.p0i8.p0i8.i64( i8* %a, i8* %b, i64 %n, i32 1, i1 0 )
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11 ret i8* %a
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12
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13 ; LINUX-LABEL: test1:
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14 ; LINUX: memcpy
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15 }
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16
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17 ; Variable memcpy's should lower to calls.
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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18 define i8* @test2(i64* %a, i64* %b, i64 %n) nounwind {
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19 entry:
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20 %tmp14 = bitcast i64* %a to i8*
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21 %tmp25 = bitcast i64* %b to i8*
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22 tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %tmp14, i8* %tmp25, i64 %n, i32 8, i1 0 )
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23 ret i8* %tmp14
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24
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25 ; LINUX-LABEL: test2:
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26 ; LINUX: memcpy
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27 }
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28
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29 ; Large constant memcpy's should lower to a call when optimizing for size.
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30 ; PR6623
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31
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32 ; On the other hand, Darwin's definition of -Os is optimizing for size without
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33 ; hurting performance so it should just ignore optsize when expanding memcpy.
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34 ; rdar://8821501
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35 define void @test3(i8* nocapture %A, i8* nocapture %B) nounwind optsize noredzone {
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36 entry:
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37 tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %A, i8* %B, i64 64, i32 1, i1 false)
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38 ret void
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39 ; LINUX-LABEL: test3:
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40 ; LINUX: memcpy
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41
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42 ; DARWIN-LABEL: test3:
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43 ; DARWIN-NOT: memcpy
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44 ; DARWIN: movq
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45 ; DARWIN: movq
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46 ; DARWIN: movq
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47 ; DARWIN: movq
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48 ; DARWIN: movq
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49 ; DARWIN: movq
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50 ; DARWIN: movq
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51 ; DARWIN: movq
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52 ; DARWIN: movq
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53 ; DARWIN: movq
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54 ; DARWIN: movq
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55 ; DARWIN: movq
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56 ; DARWIN: movq
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57 ; DARWIN: movq
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58 ; DARWIN: movq
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59 ; DARWIN: movq
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60 }
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61
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62 ; Large constant memcpy's should be inlined when not optimizing for size.
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63 define void @test4(i8* nocapture %A, i8* nocapture %B) nounwind noredzone {
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64 entry:
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65 tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %A, i8* %B, i64 64, i32 1, i1 false)
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66 ret void
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67 ; LINUX-LABEL: test4:
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68 ; LINUX: movq
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69 ; LINUX: movq
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70 ; LINUX: movq
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71 ; LINUX: movq
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72 ; LINUX: movq
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73 ; LINUX: movq
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74 ; LINUX: movq
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75 ; LINUX: movq
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76 ; LINUX: movq
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77 ; LINUX: movq
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78 ; LINUX: movq
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79 ; LINUX: movq
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80 }
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81
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82
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83 @.str = private unnamed_addr constant [30 x i8] c"\00aaaaaaaaaaaaaaaaaaaaaaaaaaaa\00", align 1
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84
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85 define void @test5(i8* nocapture %C) nounwind uwtable ssp {
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86 entry:
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87 tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %C, i8* getelementptr inbounds ([30 x i8]* @.str, i64 0, i64 0), i64 16, i32 1, i1 false)
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88 ret void
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89
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90 ; DARWIN-LABEL: test5:
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91 ; DARWIN: movabsq $7016996765293437281
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92 ; DARWIN: movabsq $7016996765293437184
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93 }
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94
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95
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96 ; PR14896
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97 @.str2 = private unnamed_addr constant [2 x i8] c"x\00", align 1
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98
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99 define void @test6() nounwind uwtable {
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100 entry:
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101 ; DARWIN: test6
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102 ; DARWIN: movw $0, 8
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103 ; DARWIN: movq $120, 0
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104 tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* null, i8* getelementptr inbounds ([2 x i8]* @.str2, i64 0, i64 0), i64 10, i32 1, i1 false)
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105 ret void
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106 }
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107
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108 define void @PR15348(i8* %a, i8* %b) {
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109 ; Ensure that alignment of '0' in an @llvm.memcpy intrinsic results in
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110 ; unaligned loads and stores.
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111 ; LINUX: PR15348
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112 ; LINUX: movb
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113 ; LINUX: movb
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114 ; LINUX: movq
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115 ; LINUX: movq
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116 ; LINUX: movq
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117 ; LINUX: movq
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118 call void @llvm.memcpy.p0i8.p0i8.i64(i8* %a, i8* %b, i64 17, i32 0, i1 false)
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119 ret void
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120 }