| ; RUN: opt -S -asan %s | FileCheck %s |
| |
| ; The IR of this testcase is generated from the following C code: |
| ; void bar (int); |
| ; |
| ; void foo() { |
| ; __block int x; |
| ; bar(x); |
| ; } |
| ; by compiling it with 'clang -emit-llvm -g -S' and then by manually |
| ; adding the sanitize_address attribute to the @foo() function (so |
| ; that ASAN accepts to instrument the function in the above opt run). |
| |
| ; Check that the location of the ASAN instrumented __block variable is |
| ; correct. |
| ; CHECK: [ DW_TAG_expression ] [DW_OP_deref] [DW_OP_plus 8] [DW_OP_deref] [DW_OP_plus 24] |
| |
| target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" |
| |
| %struct.__block_byref_x = type { i8*, %struct.__block_byref_x*, i32, i32, i32 } |
| |
| ; Function Attrs: nounwind ssp uwtable |
| define void @foo() #0 { |
| entry: |
| %x = alloca %struct.__block_byref_x, align 8 |
| call void @llvm.dbg.declare(metadata %struct.__block_byref_x* %x, metadata !12, metadata !22), !dbg !23 |
| %byref.isa = getelementptr inbounds %struct.__block_byref_x* %x, i32 0, i32 0, !dbg !24 |
| store i8* null, i8** %byref.isa, !dbg !24 |
| %byref.forwarding = getelementptr inbounds %struct.__block_byref_x* %x, i32 0, i32 1, !dbg !24 |
| store %struct.__block_byref_x* %x, %struct.__block_byref_x** %byref.forwarding, !dbg !24 |
| %byref.flags = getelementptr inbounds %struct.__block_byref_x* %x, i32 0, i32 2, !dbg !24 |
| store i32 0, i32* %byref.flags, !dbg !24 |
| %byref.size = getelementptr inbounds %struct.__block_byref_x* %x, i32 0, i32 3, !dbg !24 |
| store i32 32, i32* %byref.size, !dbg !24 |
| %forwarding = getelementptr inbounds %struct.__block_byref_x* %x, i32 0, i32 1, !dbg !25 |
| %0 = load %struct.__block_byref_x** %forwarding, !dbg !25 |
| %x1 = getelementptr inbounds %struct.__block_byref_x* %0, i32 0, i32 4, !dbg !25 |
| %1 = load i32* %x1, align 4, !dbg !25 |
| call void @bar(i32 %1), !dbg !25 |
| %2 = bitcast %struct.__block_byref_x* %x to i8*, !dbg !26 |
| call void @_Block_object_dispose(i8* %2, i32 8) #3, !dbg !26 |
| ret void, !dbg !26 |
| } |
| |
| ; Function Attrs: nounwind readnone |
| declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 |
| |
| declare void @bar(i32) #2 |
| |
| declare void @_Block_object_dispose(i8*, i32) |
| |
| attributes #0 = { nounwind ssp uwtable sanitize_address "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } |
| attributes #1 = { nounwind readnone } |
| attributes #2 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } |
| attributes #3 = { nounwind } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!8, !9, !10} |
| !llvm.ident = !{!11} |
| |
| !0 = !{!"0x11\0012\00clang version 3.6.0 (trunk 223120) (llvm/trunk 223119)\000\00\000\00\001", !1, !2, !2, !3, !2, !2} ; [ DW_TAG_compile_unit ] [/tmp/block.c] [DW_LANG_C99] |
| !1 = !{!"block.c", !"/tmp"} |
| !2 = !{} |
| !3 = !{!4} |
| !4 = !{!"0x2e\00foo\00foo\00\003\000\001\000\000\000\000\003", !1, !5, !6, null, void ()* @foo, null, null, !2} ; [ DW_TAG_subprogram ] [line 3] [def] [foo] |
| !5 = !{!"0x29", !1} ; [ DW_TAG_file_type ] [/tmp/block.c] |
| !6 = !{!"0x15\00\000\000\000\000\000\000", null, null, null, !7, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ] |
| !7 = !{null} |
| !8 = !{i32 2, !"Dwarf Version", i32 2} |
| !9 = !{i32 2, !"Debug Info Version", i32 2} |
| !10 = !{i32 1, !"PIC Level", i32 2} |
| !11 = !{!"clang version 3.6.0 (trunk 223120) (llvm/trunk 223119)"} |
| !12 = !{!"0x100\00x\004\000", !4, !5, !13} ; [ DW_TAG_auto_variable ] [x] [line 4] |
| !13 = !{!"0x13\00\000\00224\000\000\0016\000", !1, !5, null, !14, null, null, null} ; [ DW_TAG_structure_type ] [line 0, size 224, align 0, offset 0] [def] [from ] |
| !14 = !{!15, !17, !18, !20, !21} |
| !15 = !{!"0xd\00__isa\000\0064\0064\000\000", !1, !5, !16} ; [ DW_TAG_member ] [__isa] [line 0, size 64, align 64, offset 0] [from ] |
| !16 = !{!"0xf\00\000\0064\0064\000\000", null, null, null} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from ] |
| !17 = !{!"0xd\00__forwarding\000\0064\0064\0064\000", !1, !5, !16} ; [ DW_TAG_member ] [__forwarding] [line 0, size 64, align 64, offset 64] [from ] |
| !18 = !{!"0xd\00__flags\000\0032\0032\00128\000", !1, !5, !19} ; [ DW_TAG_member ] [__flags] [line 0, size 32, align 32, offset 128] [from int] |
| !19 = !{!"0x24\00int\000\0032\0032\000\000\005", null, null} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed] |
| !20 = !{!"0xd\00__size\000\0032\0032\00160\000", !1, !5, !19} ; [ DW_TAG_member ] [__size] [line 0, size 32, align 32, offset 160] [from int] |
| !21 = !{!"0xd\00x\000\0032\0032\00192\000", !1, !5, !19} ; [ DW_TAG_member ] [x] [line 0, size 32, align 32, offset 192] [from int] |
| !22 = !{!"0x102\0034\008\006\0034\0024"} ; [ DW_TAG_expression ] [DW_OP_plus 8] [DW_OP_deref] [DW_OP_plus 24] |
| !23 = !MDLocation(line: 4, column: 15, scope: !4) |
| !24 = !MDLocation(line: 4, column: 3, scope: !4) |
| !25 = !MDLocation(line: 5, column: 3, scope: !4) |
| !26 = !MDLocation(line: 6, column: 1, scope: !4) |