llvm-6502/test/DebugInfo/X86/stringpool.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

44 lines
2.1 KiB
LLVM

; RUN: llc -mtriple=x86_64-unknown-linux-gnu < %s | FileCheck %s --check-prefix=LINUX
; RUN: llc -mtriple=x86_64-darwin < %s | FileCheck %s --check-prefix=DARWIN
@yyyy = common global i32 0, align 4
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!9}
!0 = metadata !{metadata !"0x11\0012\00clang version 3.1 (trunk 143009)\001\00\000\00\000", metadata !8, metadata !1, metadata !1, metadata !1, metadata !3, metadata !1} ; [ DW_TAG_compile_unit ]
!1 = metadata !{}
!3 = metadata !{metadata !5}
!5 = metadata !{metadata !"0x34\00yyyy\00yyyy\00\001\000\001", null, metadata !6, metadata !7, i32* @yyyy, null} ; [ DW_TAG_variable ]
!6 = metadata !{metadata !"0x29", metadata !8} ; [ DW_TAG_file_type ]
!7 = metadata !{metadata !"0x24\00int\000\0032\0032\000\000\005", null, null} ; [ DW_TAG_base_type ]
!8 = metadata !{metadata !"z.c", metadata !"/home/nicholas"}
; Verify that "yyyy" ended up in the stringpool.
; LINUX: .section .debug_str,"MS",@progbits,1
; LINUX: yyyy
; DARWIN: .section __DWARF,__debug_str,regular,debug
; DARWIN: yyyy
; Verify that we refer to 'yyyy' with a relocation.
; LINUX: .long .Linfo_string3 # DW_AT_name
; LINUX-NEXT: .long {{[0-9]+}} # DW_AT_type
; LINUX-NEXT: # DW_AT_external
; LINUX-NEXT: .byte 1 # DW_AT_decl_file
; LINUX-NEXT: .byte 1 # DW_AT_decl_line
; LINUX-NEXT: .byte 9 # DW_AT_location
; LINUX-NEXT: .byte 3
; LINUX-NEXT: .quad yyyy
; Verify that we refer to 'yyyy' without a relocation.
; DARWIN: Lset[[ID:[0-9]+]] = Linfo_string3-Linfo_string ## DW_AT_name
; DARWIN-NEXT: .long Lset[[ID]]
; DARWIN-NEXT: .long {{[0-9]+}} ## DW_AT_type
; DARWIN-NEXT: ## DW_AT_external
; DARWIN-NEXT: .byte 1 ## DW_AT_decl_file
; DARWIN-NEXT: .byte 1 ## DW_AT_decl_line
; DARWIN-NEXT: .byte 9 ## DW_AT_location
; DARWIN-NEXT: .byte 3
; DARWIN-NEXT: .quad _yyyy
!9 = metadata !{i32 1, metadata !"Debug Info Version", i32 2}