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150
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1 ; RUN: opt -S -mergefunc < %s | FileCheck %s
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2
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3 ; There is a slight different in these two functions, in that the label values
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4 ; are switched. They are thus not mergeable. This tests that block addresses
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5 ; referring to blocks within each respective compared function are correctly
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6 ; ordered.
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7
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8 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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9 target triple = "x86_64-unknown-linux-gnu"
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10
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11 ; Function Attrs: nounwind uwtable
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12 define i32 @_Z1fi(i32 %i) #0 {
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13 ; CHECK-LABEL: define i32 @_Z1fi
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14 ; CHECK-NEXT: entry:
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15 ; CHECK-NEXT: alloca
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16 entry:
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17 %i.addr = alloca i32, align 4
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18 %ret = alloca i32, align 4
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19 %l = alloca i8*, align 8
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20 store i32 %i, i32* %i.addr, align 4
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21 store i32 0, i32* %ret, align 4
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22 ; Right here, this is val_0, and later the if might assign val_1
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23 store i8* blockaddress(@_Z1fi, %val_0), i8** %l, align 8
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24 %0 = load i32, i32* %i.addr, align 4
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25 %and = and i32 %0, 256
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26 %cmp = icmp eq i32 %and, 0
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27 br i1 %cmp, label %if.then, label %if.end
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28
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29 if.then:
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30 store i8* blockaddress(@_Z1fi, %val_1), i8** %l, align 8
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31 br label %if.end
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32
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33 if.end:
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34 %1 = load i8*, i8** %l, align 8
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35 br label %indirectgoto
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36
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37 val_0:
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38 store i32 12, i32* %ret, align 4
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39 br label %end
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40
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41 val_1:
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42 store i32 42, i32* %ret, align 4
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43 br label %end
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44
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45 end:
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46 %2 = load i32, i32* %ret, align 4
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47 ret i32 %2
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48
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49 indirectgoto:
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50 %indirect.goto.dest = phi i8* [ %1, %if.end ]
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51 indirectbr i8* %indirect.goto.dest, [label %val_0, label %val_1]
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52 }
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53
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54 ; Function Attrs: nounwind uwtable
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55 define i32 @_Z1gi(i32 %i) #0 {
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56 ; CHECK-LABEL: define i32 @_Z1gi
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57 ; CHECK-NEXT: entry:
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58 ; CHECK-NEXT: alloca
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59 entry:
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60 %i.addr = alloca i32, align 4
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61 %ret = alloca i32, align 4
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62 %l = alloca i8*, align 8
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63 store i32 %i, i32* %i.addr, align 4
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64 store i32 0, i32* %ret, align 4
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65 ; This time, we store val_1 initially, and later the if might assign val_0
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66 store i8* blockaddress(@_Z1gi, %val_1), i8** %l, align 8
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67 %0 = load i32, i32* %i.addr, align 4
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68 %and = and i32 %0, 256
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69 %cmp = icmp eq i32 %and, 0
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70 br i1 %cmp, label %if.then, label %if.end
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71
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72 if.then:
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73 store i8* blockaddress(@_Z1gi, %val_0), i8** %l, align 8
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74 br label %if.end
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75
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76 if.end:
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77 %1 = load i8*, i8** %l, align 8
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78 br label %indirectgoto
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79
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80 val_0:
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81 store i32 12, i32* %ret, align 4
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82 br label %end
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83
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84 val_1:
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85 store i32 42, i32* %ret, align 4
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86 br label %end
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87
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88 end:
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89 %2 = load i32, i32* %ret, align 4
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90 ret i32 %2
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91
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92 indirectgoto:
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93 %indirect.goto.dest = phi i8* [ %1, %if.end ]
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94 indirectbr i8* %indirect.goto.dest, [label %val_1, label %val_0]
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95 }
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96
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