llvm-6502/test/Transforms/ScalarRepl/debuginfo-preserved.ll
Duncan P. N. Exon Smith 83902832de Revert "Revert "DI: Fold constant arguments into a single MDString""
This reverts commit r218918, effectively reapplying r218914 after fixing
an Ocaml bindings test and an Asan crash.  The root cause of the latter
was a tightened-up check in `DILexicalBlock::Verify()`, so I'll file a
PR to investigate who requires the loose check (and why).

Original commit message follows.

--

This patch addresses the first stage of PR17891 by folding constant
arguments together into a single MDString.  Integers are stringified and
a `\0` character is used as a separator.

Part of PR17891.

Note: I've attached my testcases upgrade scripts to the PR.  If I've
just broken your out-of-tree testcases, they might help.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219010 91177308-0d34-0410-b5e6-96231b3b80d8
2014-10-03 20:01:09 +00:00

66 lines
3.4 KiB
LLVM

; RUN: opt < %s -scalarrepl -S | FileCheck %s
; RUN: opt < %s -scalarrepl-ssa -S | FileCheck %s
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"
target triple = "x86_64-apple-macosx10.6.0"
; CHECK: f
; CHECK-NOT: llvm.dbg.declare
; CHECK: llvm.dbg.value
; CHECK: llvm.dbg.value
; CHECK: llvm.dbg.value
; CHECK: llvm.dbg.value
; CHECK: llvm.dbg.value
define i32 @f(i32 %a, i32 %b) nounwind ssp {
entry:
%a.addr = alloca i32, align 4
%b.addr = alloca i32, align 4
%c = alloca i32, align 4
store i32 %a, i32* %a.addr, align 4
call void @llvm.dbg.declare(metadata !{i32* %a.addr}, metadata !6, metadata !{}), !dbg !7
store i32 %b, i32* %b.addr, align 4
call void @llvm.dbg.declare(metadata !{i32* %b.addr}, metadata !8, metadata !{}), !dbg !9
call void @llvm.dbg.declare(metadata !{i32* %c}, metadata !10, metadata !{}), !dbg !12
%tmp = load i32* %a.addr, align 4, !dbg !13
store i32 %tmp, i32* %c, align 4, !dbg !13
%tmp1 = load i32* %a.addr, align 4, !dbg !14
%tmp2 = load i32* %b.addr, align 4, !dbg !14
%add = add nsw i32 %tmp1, %tmp2, !dbg !14
store i32 %add, i32* %a.addr, align 4, !dbg !14
%tmp3 = load i32* %c, align 4, !dbg !15
%tmp4 = load i32* %b.addr, align 4, !dbg !15
%sub = sub nsw i32 %tmp3, %tmp4, !dbg !15
store i32 %sub, i32* %b.addr, align 4, !dbg !15
%tmp5 = load i32* %a.addr, align 4, !dbg !16
%tmp6 = load i32* %b.addr, align 4, !dbg !16
%add7 = add nsw i32 %tmp5, %tmp6, !dbg !16
ret i32 %add7, !dbg !16
}
declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!20}
!0 = metadata !{metadata !"0x11\0012\00clang version 3.0 (trunk 131941)\000\00\000\00\000", metadata !18, metadata !19, metadata !19, metadata !17, null, null} ; [ DW_TAG_compile_unit ]
!1 = metadata !{metadata !"0x2e\00f\00f\00\001\000\001\000\006\00256\000\001", metadata !18, metadata !2, metadata !3, null, i32 (i32, i32)* @f, null, null, null} ; [ DW_TAG_subprogram ] [line 1] [def] [f]
!2 = metadata !{metadata !"0x29", metadata !18} ; [ DW_TAG_file_type ]
!3 = metadata !{metadata !"0x15\00\000\000\000\000\000\000", metadata !18, metadata !2, null, metadata !4, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!4 = metadata !{metadata !5}
!5 = metadata !{metadata !"0x24\00int\000\0032\0032\000\000\005", null, metadata !0} ; [ DW_TAG_base_type ]
!6 = metadata !{metadata !"0x101\00a\0016777217\000", metadata !1, metadata !2, metadata !5} ; [ DW_TAG_arg_variable ]
!7 = metadata !{i32 1, i32 11, metadata !1, null}
!8 = metadata !{metadata !"0x101\00b\0033554433\000", metadata !1, metadata !2, metadata !5} ; [ DW_TAG_arg_variable ]
!9 = metadata !{i32 1, i32 18, metadata !1, null}
!10 = metadata !{metadata !"0x100\00c\002\000", metadata !11, metadata !2, metadata !5} ; [ DW_TAG_auto_variable ]
!11 = metadata !{metadata !"0xb\001\0021\000", metadata !18, metadata !1} ; [ DW_TAG_lexical_block ]
!12 = metadata !{i32 2, i32 9, metadata !11, null}
!13 = metadata !{i32 2, i32 14, metadata !11, null}
!14 = metadata !{i32 3, i32 5, metadata !11, null}
!15 = metadata !{i32 4, i32 5, metadata !11, null}
!16 = metadata !{i32 5, i32 5, metadata !11, null}
!17 = metadata !{metadata !1}
!18 = metadata !{metadata !"/d/j/debug-test.c", metadata !"/Volumes/Data/b"}
!19 = metadata !{i32 0}
!20 = metadata !{i32 1, metadata !"Debug Info Version", i32 2}