| Eric Christopher | cee313d | 2019-04-17 04:52:47 +0000 | [diff] [blame^] | 1 | ; RUN: opt -S -mergefunc < %s | FileCheck %s |
| 2 | |
| 3 | ; These two functions are identical. The basic block labels are the same, and |
| 4 | ; induce the same CFG. We are testing that block addresses within different |
| 5 | ; functions are compared by their value, and not based on order. Both functions |
| 6 | ; come from the same C-code, but in the first the two val_0/val_1 basic blocks |
| 7 | ; are in a different order (they were manually switched post-compilation). |
| 8 | |
| 9 | target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| 10 | target triple = "x86_64-unknown-linux-gnu" |
| 11 | |
| 12 | define i32 @_Z1fi(i32 %i) #0 { |
| 13 | entry: |
| 14 | %i.addr = alloca i32, align 4 |
| 15 | %ret = alloca i32, align 4 |
| 16 | %l = alloca i8*, align 8 |
| 17 | store i32 %i, i32* %i.addr, align 4 |
| 18 | store i32 0, i32* %ret, align 4 |
| 19 | store i8* blockaddress(@_Z1fi, %val_0), i8** %l, align 8 |
| 20 | %0 = load i32, i32* %i.addr, align 4 |
| 21 | %and = and i32 %0, 256 |
| 22 | %cmp = icmp eq i32 %and, 0 |
| 23 | br i1 %cmp, label %if.then, label %if.end |
| 24 | |
| 25 | if.then: |
| 26 | store i8* blockaddress(@_Z1fi, %val_1), i8** %l, align 8 |
| 27 | br label %if.end |
| 28 | |
| 29 | if.end: |
| 30 | %1 = load i8*, i8** %l, align 8 |
| 31 | br label %indirectgoto |
| 32 | |
| 33 | val_1: |
| 34 | store i32 42, i32* %ret, align 4 |
| 35 | br label %end |
| 36 | |
| 37 | val_0: |
| 38 | store i32 12, i32* %ret, align 4 |
| 39 | br label %end |
| 40 | |
| 41 | |
| 42 | end: |
| 43 | %2 = load i32, i32* %ret, align 4 |
| 44 | ret i32 %2 |
| 45 | |
| 46 | indirectgoto: |
| 47 | %indirect.goto.dest = phi i8* [ %1, %if.end ] |
| 48 | indirectbr i8* %indirect.goto.dest, [label %val_0, label %val_1] |
| 49 | } |
| 50 | |
| 51 | define i32 @_Z1gi(i32 %i) #0 { |
| 52 | ; CHECK-LABEL: define i32 @_Z1gi |
| 53 | ; CHECK-NEXT: tail call i32 @_Z1fi |
| 54 | ; CHECK-NEXT: ret |
| 55 | entry: |
| 56 | %i.addr = alloca i32, align 4 |
| 57 | %ret = alloca i32, align 4 |
| 58 | %l = alloca i8*, align 8 |
| 59 | store i32 %i, i32* %i.addr, align 4 |
| 60 | store i32 0, i32* %ret, align 4 |
| 61 | store i8* blockaddress(@_Z1gi, %val_0), i8** %l, align 8 |
| 62 | %0 = load i32, i32* %i.addr, align 4 |
| 63 | %and = and i32 %0, 256 |
| 64 | %cmp = icmp eq i32 %and, 0 |
| 65 | br i1 %cmp, label %if.then, label %if.end |
| 66 | |
| 67 | if.then: |
| 68 | store i8* blockaddress(@_Z1gi, %val_1), i8** %l, align 8 |
| 69 | br label %if.end |
| 70 | |
| 71 | if.end: |
| 72 | %1 = load i8*, i8** %l, align 8 |
| 73 | br label %indirectgoto |
| 74 | |
| 75 | val_0: |
| 76 | store i32 12, i32* %ret, align 4 |
| 77 | br label %end |
| 78 | |
| 79 | val_1: |
| 80 | store i32 42, i32* %ret, align 4 |
| 81 | br label %end |
| 82 | |
| 83 | end: |
| 84 | %2 = load i32, i32* %ret, align 4 |
| 85 | ret i32 %2 |
| 86 | |
| 87 | indirectgoto: |
| 88 | %indirect.goto.dest = phi i8* [ %1, %if.end ] |
| 89 | indirectbr i8* %indirect.goto.dest, [label %val_0, label %val_1] |
| 90 | } |
| 91 | |