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83902832de
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
36 lines
1.9 KiB
LLVM
36 lines
1.9 KiB
LLVM
; RUN: llc %s -mtriple=x86_64-pc-linux-gnu -O0 -o - | FileCheck %s
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; We are testing that a value in a 16 bit register gets reported as
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; being in its superregister.
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; CHECK: .byte 80 # super-register
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; CHECK-NEXT: # DW_OP_reg0
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; CHECK-NEXT: .byte 147 # DW_OP_piece
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; CHECK-NEXT: .byte 2 # 2
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define i16 @f(i16 signext %zzz) nounwind {
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entry:
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call void @llvm.dbg.value(metadata !{i16 %zzz}, i64 0, metadata !0, metadata !{metadata !"0x102"})
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%conv = sext i16 %zzz to i32, !dbg !7
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%conv1 = trunc i32 %conv to i16
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ret i16 %conv1
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}
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declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone
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!llvm.dbg.cu = !{!3}
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!llvm.module.flags = !{!11}
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!9 = metadata !{metadata !1}
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!0 = metadata !{metadata !"0x101\00zzz\0016777219\000", metadata !1, metadata !2, metadata !6} ; [ DW_TAG_arg_variable ]
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!1 = metadata !{metadata !"0x2e\00f\00f\00\003\000\001\000\006\00256\000\003", metadata !10, metadata !2, metadata !4, null, i16 (i16)* @f, null, null, null} ; [ DW_TAG_subprogram ] [line 3] [def] [f]
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!2 = metadata !{metadata !"0x29", metadata !10} ; [ DW_TAG_file_type ]
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!3 = metadata !{metadata !"0x11\0012\00clang version 3.0 ()\000\00\000\00\001", metadata !10, metadata !5, metadata !5, metadata !9, null, null} ; [ DW_TAG_compile_unit ]
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!4 = metadata !{metadata !"0x15\00\000\000\000\000\000\000", metadata !10, metadata !2, null, metadata !5, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
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!5 = metadata !{null}
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!6 = metadata !{metadata !"0x24\00short\000\0016\0016\000\000\005", null, metadata !3} ; [ DW_TAG_base_type ]
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!7 = metadata !{i32 4, i32 22, metadata !8, null}
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!8 = metadata !{metadata !"0xb\003\0019\000", metadata !10, metadata !1} ; [ DW_TAG_lexical_block ]
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!10 = metadata !{metadata !"/home/espindola/llvm/test.c", metadata !"/home/espindola/tmpfs/build"}
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!11 = metadata !{i32 1, metadata !"Debug Info Version", i32 2}
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