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llvm/test/DebugInfo/X86/convert-debugloc.ll
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Matt Arsenault 5fd17c6d29 RegAllocFast: Improve hinting heuristic 
Trace through multiple COPYs when looking for a physreg source. Add
hinting for vregs that will be copied into physregs (we only hinted
for vregs getting copied to a physreg previously).  Give hinted a
register a bonus when deciding which value to spill.  This is part of
my rewrite regallocfast series. In fact this one doesn't even have an
effect unless you also flip the allocation to happen from back to
front of a basic block. Nonetheless it helps to split this up to ease
review of D52010

Patch by Matthias Braun

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@360887 91177308-0d34-0410-b5e6-96231b3b80d8
2019-05-16 12:50:39 +00:00

160 lines
8.5 KiB
LLVM
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; RUN: llc -dwarf-version=5 -filetype=obj -O0 < %s | llvm-dwarfdump - | FileCheck %s --match-full-lines --check-prefix=DW5-CHECK
; RUN: llc -dwarf-version=4 -filetype=obj -O0 < %s | llvm-dwarfdump - | FileCheck %s --match-full-lines --check-prefix=DW4-CHECK
; DW5-CHECK: .debug_info contents:
; DW5-CHECK-NEXT: 0x00000000: Compile Unit: length = 0x00000064 version = 0x0005 unit_type = DW_UT_compile abbr_offset = 0x0000 addr_size = 0x08 (next unit at 0x00000068)
; DW5-CHECK-EMPTY:
; DW5-CHECK-NEXT: 0x0000000c: DW_TAG_compile_unit
; DW5-CHECK-NEXT: DW_AT_producer ("clang version 9.0.0 (trunk 353791) (llvm/trunk 353801)")
; DW5-CHECK-NEXT: DW_AT_language (DW_LANG_C99)
; DW5-CHECK-NEXT: DW_AT_name ("dbg.c")
; DW5-CHECK-NEXT: DW_AT_str_offsets_base (0x00000008)
; DW5-CHECK-NEXT: DW_AT_stmt_list (0x00000000)
; DW5-CHECK-NEXT: DW_AT_comp_dir {{.*}}
; DW5-CHECK-NEXT: DW_AT_low_pc (0x0000000000000000)
; DW5-CHECK-NEXT: DW_AT_high_pc (0x0000000000000005)
; DW5-CHECK-NEXT: DW_AT_addr_base (0x00000008)
; DW5-CHECK-EMPTY:
; DW5-CHECK-NEXT: 0x00000023: DW_TAG_base_type
; DW5-CHECK-NEXT: DW_AT_name ("DW_ATE_signed_8")
; DW5-CHECK-NEXT: DW_AT_encoding (DW_ATE_signed)
; DW5-CHECK-NEXT: DW_AT_byte_size (0x01)
; DW5-CHECK-EMPTY:
; DW5-CHECK-NEXT: 0x00000027: DW_TAG_base_type
; DW5-CHECK-NEXT: DW_AT_name ("DW_ATE_signed_32")
; DW5-CHECK-NEXT: DW_AT_encoding (DW_ATE_signed)
; DW5-CHECK-NEXT: DW_AT_byte_size (0x04)
; DW5-CHECK-EMPTY:
; DW5-CHECK-NEXT: 0x0000002b: DW_TAG_subprogram
; DW5-CHECK-NEXT: DW_AT_low_pc (0x0000000000000000)
; DW5-CHECK-NEXT: DW_AT_high_pc (0x0000000000000005)
; DW5-CHECK-NEXT: DW_AT_frame_base (DW_OP_reg7 RSP)
; DW5-CHECK-NEXT: DW_AT_name ("foo")
; DW5-CHECK-NEXT: DW_AT_decl_file {{.*}}
; DW5-CHECK-NEXT: DW_AT_decl_line (1)
; DW5-CHECK-NEXT: DW_AT_prototyped (true)
; DW5-CHECK-NEXT: DW_AT_type (0x0000005f "signed char")
; DW5-CHECK-NEXT: DW_AT_external (true)
; DW5-CHECK-EMPTY:
; DW5-CHECK-NEXT: 0x0000003a: DW_TAG_formal_parameter
; DW5-CHECK-NEXT: DW_AT_location (DW_OP_reg5 RDI)
; DW5-CHECK-NEXT: DW_AT_name ("x")
; DW5-CHECK-NEXT: DW_AT_decl_file {{.*}}
; DW5-CHECK-NEXT: DW_AT_decl_line (1)
; DW5-CHECK-NEXT: DW_AT_type (0x0000005f "signed char")
; DW5-CHECK-EMPTY:
; DW5-CHECK-NEXT: 0x00000044: DW_TAG_variable
; DW5-CHECK-NEXT: DW_AT_location (DW_OP_breg5 RDI+0, DW_OP_constu 0xff, DW_OP_and, DW_OP_convert (0x00000023) "DW_ATE_signed_8", DW_OP_convert (0x00000027) "DW_ATE_signed_32", DW_OP_stack_value)
; DW5-CHECK-NEXT: DW_AT_name ("y")
; DW5-CHECK-NEXT: DW_AT_decl_file {{.*}}
; DW5-CHECK-NEXT: DW_AT_decl_line (3)
; DW5-CHECK-NEXT: DW_AT_type (0x00000063 "int")
; DW5-CHECK-EMPTY:
; DW5-CHECK-NEXT: 0x0000005e: NULL
; DW5-CHECK-EMPTY:
; DW5-CHECK-NEXT: 0x0000005f: DW_TAG_base_type
; DW5-CHECK-NEXT: DW_AT_name ("signed char")
; DW5-CHECK-NEXT: DW_AT_encoding (DW_ATE_signed_char)
; DW5-CHECK-NEXT: DW_AT_byte_size (0x01)
; DW5-CHECK-EMPTY:
; DW5-CHECK-NEXT: 0x00000063: DW_TAG_base_type
; DW5-CHECK-NEXT: DW_AT_name ("int")
; DW5-CHECK-NEXT: DW_AT_encoding (DW_ATE_signed)
; DW5-CHECK-NEXT: DW_AT_byte_size (0x04)
; DW5-CHECK-EMPTY:
; DW5-CHECK-NEXT: 0x00000067: NULL
; DW4-CHECK: .debug_info contents:
; DW4-CHECK-NEXT: 0x00000000: Compile Unit: length = 0x0000007a version = 0x0004 abbr_offset = 0x0000 addr_size = 0x08 (next unit at 0x0000007e)
; DW4-CHECK-EMPTY:
; DW4-CHECK-NEXT: 0x0000000b: DW_TAG_compile_unit
; DW4-CHECK-NEXT: DW_AT_producer ("clang version 9.0.0 (trunk 353791) (llvm/trunk 353801)")
; DW4-CHECK-NEXT: DW_AT_language (DW_LANG_C99)
; DW4-CHECK-NEXT: DW_AT_name ("dbg.c")
; DW4-CHECK-NEXT: DW_AT_stmt_list (0x00000000)
; DW4-CHECK-NEXT: DW_AT_comp_dir {{.*}}
; DW4-CHECK-NEXT: DW_AT_low_pc (0x0000000000000000)
; DW4-CHECK-NEXT: DW_AT_high_pc (0x0000000000000005)
; DW4-CHECK-EMPTY:
; DW4-CHECK-NEXT: 0x0000002a: DW_TAG_subprogram
; DW4-CHECK-NEXT: DW_AT_low_pc (0x0000000000000000)
; DW4-CHECK-NEXT: DW_AT_high_pc (0x0000000000000005)
; DW4-CHECK-NEXT: DW_AT_frame_base (DW_OP_reg7 RSP)
; DW4-CHECK-NEXT: DW_AT_name ("foo")
; DW4-CHECK-NEXT: DW_AT_decl_file {{.*}}
; DW4-CHECK-NEXT: DW_AT_decl_line (1)
; DW4-CHECK-NEXT: DW_AT_prototyped (true)
; DW4-CHECK-NEXT: DW_AT_type (0x0000006f "signed char")
; DW4-CHECK-NEXT: DW_AT_external (true)
; DW4-CHECK-EMPTY:
; DW4-CHECK-NEXT: 0x00000043: DW_TAG_formal_parameter
; DW4-CHECK-NEXT: DW_AT_location (DW_OP_reg5 RDI)
; DW4-CHECK-NEXT: DW_AT_name ("x")
; DW4-CHECK-NEXT: DW_AT_decl_file {{.*}}
; DW4-CHECK-NEXT: DW_AT_decl_line (1)
; DW4-CHECK-NEXT: DW_AT_type (0x0000006f "signed char")
; DW4-CHECK-EMPTY:
; DW4-CHECK-NEXT: 0x00000050: DW_TAG_variable
; DW4-CHECK-NEXT: DW_AT_location (DW_OP_breg5 RDI+0, DW_OP_constu 0xff, DW_OP_and, DW_OP_dup, DW_OP_constu 0x7, DW_OP_shr, DW_OP_lit0, DW_OP_not, DW_OP_mul, DW_OP_constu 0x8, DW_OP_shl, DW_OP_or, DW_OP_stack_value)
; DW4-CHECK-NEXT: DW_AT_name ("y")
; DW4-CHECK-NEXT: DW_AT_decl_file {{.*}}
; DW4-CHECK-NEXT: DW_AT_decl_line (3)
; DW4-CHECK-NEXT: DW_AT_type (0x00000076 "int")
; DW4-CHECK-EMPTY:
; DW4-CHECK-NEXT: 0x0000006e: NULL
; DW4-CHECK-EMPTY:
; DW4-CHECK-NEXT: 0x0000006f: DW_TAG_base_type
; DW4-CHECK-NEXT: DW_AT_name ("signed char")
; DW4-CHECK-NEXT: DW_AT_encoding (DW_ATE_signed_char)
; DW4-CHECK-NEXT: DW_AT_byte_size (0x01)
; DW4-CHECK-EMPTY:
; DW4-CHECK-NEXT: 0x00000076: DW_TAG_base_type
; DW4-CHECK-NEXT: DW_AT_name ("int")
; DW4-CHECK-NEXT: DW_AT_encoding (DW_ATE_signed)
; DW4-CHECK-NEXT: DW_AT_byte_size (0x04)
; DW4-CHECK-EMPTY:
; DW4-CHECK-NEXT: 0x0000007d: NULL
; ModuleID = 'dbg.ll'
source_filename = "dbg.c"
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
; Function Attrs: noinline nounwind uwtable
define dso_local signext i8 @foo(i8 signext %x) !dbg !7 {
entry:
call void @llvm.dbg.value(metadata i8 %x, metadata !11, metadata !DIExpression()), !dbg !12
call void @llvm.dbg.value(metadata i8 %x, metadata !13, metadata !DIExpression(DW_OP_LLVM_convert, 8, DW_ATE_signed, DW_OP_LLVM_convert, 32, DW_ATE_signed, DW_OP_stack_value)), !dbg !15
ret i8 %x, !dbg !16
}
; Function Attrs: nounwind readnone speculatable
declare void @llvm.dbg.declare(metadata, metadata, metadata)
; Function Attrs: nounwind readnone speculatable
declare void @llvm.dbg.value(metadata, metadata, metadata)
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!3, !4, !5}
!llvm.ident = !{!6}
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 9.0.0 (trunk 353791) (llvm/trunk 353801)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None)
!1 = !DIFile(filename: "dbg.c", directory: "/tmp", checksumkind: CSK_MD5, checksum: "2a034da6937f5b9cf6dd2d89127f57fd")
!2 = !{}
!3 = !{i32 2, !"Dwarf Version", i32 5}
!4 = !{i32 2, !"Debug Info Version", i32 3}
!5 = !{i32 1, !"wchar_size", i32 4}
!6 = !{!"clang version 9.0.0 (trunk 353791) (llvm/trunk 353801)"}
!7 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !8, scopeLine: 2, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2)
!8 = !DISubroutineType(types: !9)
!9 = !{!10, !10}
!10 = !DIBasicType(name: "signed char", size: 8, encoding: DW_ATE_signed_char)
!11 = !DILocalVariable(name: "x", arg: 1, scope: !7, file: !1, line: 1, type: !10)
!12 = !DILocation(line: 1, column: 29, scope: !7)
!13 = !DILocalVariable(name: "y", scope: !7, file: !1, line: 3, type: !14)
!14 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!15 = !DILocation(line: 3, column: 14, scope: !7)
!16 = !DILocation(line: 4, column: 3, scope: !7)
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