1 ; RUN: opt -S -mergefunc < %s | FileCheck %s 2 3 ; There is a slight different in these two functions, in that the label values 4 ; are switched. They are thus not mergeable. This tests that block addresses 5 ; referring to blocks within each respective compared function are correctly 6 ; ordered. 7 8 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 9 target triple = "x86_64-unknown-linux-gnu" 10 11 ; Function Attrs: nounwind uwtable 12 define i32 @_Z1fi(i32 %i) #0 { 13 ; CHECK-LABEL: define i32 @_Z1fi 14 ; CHECK-NEXT: entry: 15 ; CHECK-NEXT: alloca 16 entry: 17 %i.addr = alloca i32, align 4 18 %ret = alloca i32, align 4 19 %l = alloca i8*, align 8 20 store i32 %i, i32* %i.addr, align 4 21 store i32 0, i32* %ret, align 4 22 ; Right here, this is val_0, and later the if might assign val_1 23 store i8* blockaddress(@_Z1fi, %val_0), i8** %l, align 8 24 %0 = load i32, i32* %i.addr, align 4 25 %and = and i32 %0, 256 26 %cmp = icmp eq i32 %and, 0 27 br i1 %cmp, label %if.then, label %if.end 28 29 if.then: 30 store i8* blockaddress(@_Z1fi, %val_1), i8** %l, align 8 31 br label %if.end 32 33 if.end: 34 %1 = load i8*, i8** %l, align 8 35 br label %indirectgoto 36 37 val_0: 38 store i32 12, i32* %ret, align 4 39 br label %end 40 41 val_1: 42 store i32 42, i32* %ret, align 4 43 br label %end 44 45 end: 46 %2 = load i32, i32* %ret, align 4 47 ret i32 %2 48 49 indirectgoto: 50 %indirect.goto.dest = phi i8* [ %1, %if.end ] 51 indirectbr i8* %indirect.goto.dest, [label %val_0, label %val_1] 52 } 53 54 ; Function Attrs: nounwind uwtable 55 define i32 @_Z1gi(i32 %i) #0 { 56 ; CHECK-LABEL: define i32 @_Z1gi 57 ; CHECK-NEXT: entry: 58 ; CHECK-NEXT: alloca 59 entry: 60 %i.addr = alloca i32, align 4 61 %ret = alloca i32, align 4 62 %l = alloca i8*, align 8 63 store i32 %i, i32* %i.addr, align 4 64 store i32 0, i32* %ret, align 4 65 ; This time, we store val_1 initially, and later the if might assign val_0 66 store i8* blockaddress(@_Z1gi, %val_1), i8** %l, align 8 67 %0 = load i32, i32* %i.addr, align 4 68 %and = and i32 %0, 256 69 %cmp = icmp eq i32 %and, 0 70 br i1 %cmp, label %if.then, label %if.end 71 72 if.then: 73 store i8* blockaddress(@_Z1gi, %val_0), i8** %l, align 8 74 br label %if.end 75 76 if.end: 77 %1 = load i8*, i8** %l, align 8 78 br label %indirectgoto 79 80 val_0: 81 store i32 12, i32* %ret, align 4 82 br label %end 83 84 val_1: 85 store i32 42, i32* %ret, align 4 86 br label %end 87 88 end: 89 %2 = load i32, i32* %ret, align 4 90 ret i32 %2 91 92 indirectgoto: 93 %indirect.goto.dest = phi i8* [ %1, %if.end ] 94 indirectbr i8* %indirect.goto.dest, [label %val_1, label %val_0] 95 } 96 97
