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; RUN: opt < %s -asan -asan-module -asan-use-after-return=0 -S | FileCheck %s
; Checks that llvm.dbg.declare instructions are updated
; accordingly as we merge allocas.
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"
target triple = "x86_64-unknown-linux-gnu"
define i32 @_Z3zzzi(i32 %p) nounwind uwtable sanitize_address {
entry:
%p.addr = alloca i32, align 4
%r = alloca i32, align 4
store i32 %p, i32* %p.addr, align 4
call void @llvm.dbg.declare(metadata !{i32* %p.addr}, metadata !10, metadata !{metadata !"0x102"}), !dbg !11
call void @llvm.dbg.declare(metadata !{i32* %r}, metadata !12, metadata !{metadata !"0x102"}), !dbg !14
%0 = load i32* %p.addr, align 4, !dbg !14
%add = add nsw i32 %0, 1, !dbg !14
store i32 %add, i32* %r, align 4, !dbg !14
%1 = load i32* %r, align 4, !dbg !15
ret i32 %1, !dbg !15
}
; CHECK: define i32 @_Z3zzzi
; CHECK: entry:
; Verify that llvm.dbg.declare calls are in the entry basic block.
; CHECK-NOT: %entry
; CHECK: call void @llvm.dbg.declare(metadata {{.*}}, metadata ![[ARG_ID:[0-9]+]], metadata ![[OPDEREF:[0-9]+]])
; CHECK-NOT: %entry
; CHECK: call void @llvm.dbg.declare(metadata {{.*}}, metadata ![[VAR_ID:[0-9]+]], metadata ![[OPDEREF:[0-9]+]])
declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!17}
!0 = metadata !{metadata !"0x11\004\00clang version 3.3 (trunk 169314)\001\00\000\00\000", metadata !16, metadata !1, metadata !1, metadata !3, metadata !1, null} ; [ DW_TAG_compile_unit ] [/usr/local/google/llvm_cmake_clang/tmp/debuginfo/a.cc] [DW_LANG_C_plus_plus]
!1 = metadata !{i32 0}
!3 = metadata !{metadata !5}
!5 = metadata !{metadata !"0x2e\00zzz\00zzz\00_Z3zzzi\001\000\001\000\006\00256\000\001", metadata !16, metadata !6, metadata !7, null, i32 (i32)* @_Z3zzzi, null, null, metadata !1} ; [ DW_TAG_subprogram ] [line 1] [def] [zzz]
!6 = metadata !{metadata !"0x29", metadata !16} ; [ DW_TAG_file_type ]
!7 = metadata !{metadata !"0x15\00\000\000\000\000\000\000", i32 0, null, null, metadata !8, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!8 = metadata !{metadata !9, metadata !9}
!9 = metadata !{metadata !"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]
!10 = metadata !{metadata !"0x101\00p\0016777217\000", metadata !5, metadata !6, metadata !9} ; [ DW_TAG_arg_variable ] [p] [line 1]
!11 = metadata !{i32 1, i32 0, metadata !5, null}
!12 = metadata !{metadata !"0x100\00r\002\000", metadata !13, metadata !6, metadata !9} ; [ DW_TAG_auto_variable ] [r] [line 2]
; Verify that debug descriptors for argument and local variable will be replaced
; with descriptors that end with OpDeref (encoded as 2).
; CHECK: ![[ARG_ID]] = {{.*}} ; [ DW_TAG_arg_variable ] [p] [line 1]
; CHECK: ![[OPDEREF]] = metadata !{metadata !"0x102\006"}
; CHECK: ![[VAR_ID]] = {{.*}} ; [ DW_TAG_auto_variable ] [r] [line 2]
; Verify that there are no more variable descriptors.
; CHECK-NOT: DW_TAG_arg_variable
; CHECK-NOT: DW_TAG_auto_variable
!13 = metadata !{metadata !"0xb\001\000\000", metadata !16, metadata !5} ; [ DW_TAG_lexical_block ] [/usr/local/google/llvm_cmake_clang/tmp/debuginfo/a.cc]
!14 = metadata !{i32 2, i32 0, metadata !13, null}
!15 = metadata !{i32 3, i32 0, metadata !13, null}
!16 = metadata !{metadata !"a.cc", metadata !"/usr/local/google/llvm_cmake_clang/tmp/debuginfo"}
!17 = metadata !{i32 1, metadata !"Debug Info Version", i32 2}
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