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4a5feedcaa
This commit moves `MDLocation`, finishing off PR21433. There's an
accompanying clang commit for frontend testcases. I'll attach the
testcase upgrade script I used to PR21433 to help out-of-tree
frontends/backends.
This changes the schema for `DebugLoc` and `DILocation` from:
!{i32 3, i32 7, !7, !8}
to:
!MDLocation(line: 3, column: 7, scope: !7, inlinedAt: !8)
Note that empty fields (line/column: 0 and inlinedAt: null) don't get
printed by the assembly writer.
llvm-svn: 226048
63 lines
3.1 KiB
LLVM
63 lines
3.1 KiB
LLVM
; RUN: opt < %s -asan -asan-module -asan-use-after-return=0 -S | FileCheck %s
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; Checks that llvm.dbg.declare instructions are updated
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; accordingly as we merge allocas.
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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define i32 @_Z3zzzi(i32 %p) nounwind uwtable sanitize_address {
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entry:
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%p.addr = alloca i32, align 4
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%r = alloca i32, align 4
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store i32 %p, i32* %p.addr, align 4
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call void @llvm.dbg.declare(metadata i32* %p.addr, metadata !10, metadata !{!"0x102"}), !dbg !11
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call void @llvm.dbg.declare(metadata i32* %r, metadata !12, metadata !{!"0x102"}), !dbg !14
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%0 = load i32* %p.addr, align 4, !dbg !14
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%add = add nsw i32 %0, 1, !dbg !14
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store i32 %add, i32* %r, align 4, !dbg !14
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%1 = load i32* %r, align 4, !dbg !15
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ret i32 %1, !dbg !15
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}
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; CHECK: define i32 @_Z3zzzi
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; CHECK: entry:
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; Verify that llvm.dbg.declare calls are in the entry basic block.
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; CHECK-NOT: %entry
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; CHECK: call void @llvm.dbg.declare(metadata {{.*}}, metadata ![[ARG_ID:[0-9]+]], metadata ![[OPDEREF:[0-9]+]])
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; CHECK-NOT: %entry
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; CHECK: call void @llvm.dbg.declare(metadata {{.*}}, metadata ![[VAR_ID:[0-9]+]], metadata ![[OPDEREF:[0-9]+]])
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declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!17}
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!0 = !{!"0x11\004\00clang version 3.3 (trunk 169314)\001\00\000\00\000", !16, !1, !1, !3, !1, null} ; [ DW_TAG_compile_unit ] [/usr/local/google/llvm_cmake_clang/tmp/debuginfo/a.cc] [DW_LANG_C_plus_plus]
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!1 = !{i32 0}
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!3 = !{!5}
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!5 = !{!"0x2e\00zzz\00zzz\00_Z3zzzi\001\000\001\000\006\00256\000\001", !16, !6, !7, null, i32 (i32)* @_Z3zzzi, null, null, !1} ; [ DW_TAG_subprogram ] [line 1] [def] [zzz]
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!6 = !{!"0x29", !16} ; [ DW_TAG_file_type ]
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!7 = !{!"0x15\00\000\000\000\000\000\000", i32 0, null, null, !8, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
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!8 = !{!9, !9}
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!9 = !{!"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]
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!10 = !{!"0x101\00p\0016777217\000", !5, !6, !9} ; [ DW_TAG_arg_variable ] [p] [line 1]
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!11 = !MDLocation(line: 1, scope: !5)
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!12 = !{!"0x100\00r\002\000", !13, !6, !9} ; [ DW_TAG_auto_variable ] [r] [line 2]
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; Verify that debug descriptors for argument and local variable will be replaced
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; with descriptors that end with OpDeref (encoded as 2).
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; CHECK: ![[ARG_ID]] = {{.*}} ; [ DW_TAG_arg_variable ] [p] [line 1]
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; CHECK: ![[OPDEREF]] = !{!"0x102\006"}
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; CHECK: ![[VAR_ID]] = {{.*}} ; [ DW_TAG_auto_variable ] [r] [line 2]
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; Verify that there are no more variable descriptors.
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; CHECK-NOT: DW_TAG_arg_variable
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; CHECK-NOT: DW_TAG_auto_variable
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!13 = !{!"0xb\001\000\000", !16, !5} ; [ DW_TAG_lexical_block ] [/usr/local/google/llvm_cmake_clang/tmp/debuginfo/a.cc]
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!14 = !MDLocation(line: 2, scope: !13)
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!15 = !MDLocation(line: 3, scope: !13)
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!16 = !{!"a.cc", !"/usr/local/google/llvm_cmake_clang/tmp/debuginfo"}
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!17 = !{i32 1, !"Debug Info Version", i32 2}
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