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clang-p2996/llvm/test/DebugInfo/XCOFF/explicit-section.ll
Chen Zheng eb7d16ea25 [PowerPC] make expensive mflr be away from its user in the function prologue 
mflr is kind of expensive on Power version smaller than 10, so we should
schedule the store for the mflr's def away from mflr.

In epilogue, the expensive mtlr has no user for its def, so it doesn't
matter that the load and the mtlr are back-to-back.

Reviewed By: RolandF

Differential Revision: https://reviews.llvm.org/D137423
2022-11-14 21:14:20 -05:00

339 lines
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; RUN: llc -debugger-tune=gdb -mtriple powerpc-ibm-aix-xcoff < %s | \
; RUN: FileCheck %s
source_filename = "2.c"
target datalayout = "E-m:a-p:32:32-i64:64-n32"
; Function Attrs: noinline nounwind optnone
define i32 @bar() #0 !dbg !8 {
entry:
ret i32 1, !dbg !13
}
; Function Attrs: noinline nounwind optnone
define i32 @main() #0 section "explicit_main_sec" !dbg !14 {
entry:
%retval = alloca i32, align 4
store i32 0, ptr %retval, align 4
%call = call i32 @bar(), !dbg !15
ret i32 %call, !dbg !16
}
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!3, !4, !5, !6}
!llvm.ident = !{!7}
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 13.0.0", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None)
!1 = !DIFile(filename: "2.c", directory: "debug")
!2 = !{}
!3 = !{i32 7, !"Dwarf Version", i32 3}
!4 = !{i32 2, !"Debug Info Version", i32 3}
!5 = !{i32 1, !"wchar_size", i32 2}
!6 = !{i32 7, !"PIC Level", i32 2}
!7 = !{!"clang version 13.0.0"}
!8 = distinct !DISubprogram(name: "bar", scope: !9, file: !9, line: 1, type: !10, scopeLine: 1, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2)
!9 = !DIFile(filename: "2.c", directory: "debug")
!10 = !DISubroutineType(types: !11)
!11 = !{!12}
!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!13 = !DILocation(line: 1, column: 12, scope: !8)
!14 = distinct !DISubprogram(name: "main", scope: !9, file: !9, line: 2, type: !10, scopeLine: 2, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2)
!15 = !DILocation(line: 3, column: 10, scope: !14)
!16 = !DILocation(line: 3, column: 3, scope: !14)
; CHECK: .csect .text[PR],5
; CHECK-NEXT: .file "2.c"
; CHECK-NEXT: .globl bar[DS] # -- Begin function bar
; CHECK-NEXT: .globl .bar
; CHECK-NEXT: .align 2
; CHECK-NEXT: .csect bar[DS],2
; CHECK-NEXT: .vbyte 4, .bar # @bar
; CHECK-NEXT: .vbyte 4, TOC[TC0]
; CHECK-NEXT: .vbyte 4, 0
; CHECK-NEXT: .csect .text[PR],5
; CHECK-NEXT: .bar:
; CHECK-NEXT: L..func_begin0:
; CHECK-NEXT: # %bb.0: # %entry
; CHECK-NEXT: L..tmp0:
; CHECK-NEXT: L..tmp1:
; CHECK-NEXT: li 3, 1
; CHECK-NEXT: blr
; CHECK-NEXT: L..tmp2:
; CHECK-NEXT: L..bar0:
; CHECK-NEXT: .vbyte 4, 0x00000000 # Traceback table begin
; CHECK-NEXT: .byte 0x00 # Version = 0
; CHECK-NEXT: .byte 0x09 # Language = CPlusPlus
; CHECK-NEXT: .byte 0x20 # -IsGlobaLinkage, -IsOutOfLineEpilogOrPrologue
; CHECK-NEXT: # +HasTraceBackTableOffset, -IsInternalProcedure
; CHECK-NEXT: # -HasControlledStorage, -IsTOCless
; CHECK-NEXT: # -IsFloatingPointPresent
; CHECK-NEXT: # -IsFloatingPointOperationLogOrAbortEnabled
; CHECK-NEXT: .byte 0x40 # -IsInterruptHandler, +IsFunctionNamePresent, -IsAllocaUsed
; CHECK-NEXT: # OnConditionDirective = 0, -IsCRSaved, -IsLRSaved
; CHECK-NEXT: .byte 0x80 # +IsBackChainStored, -IsFixup, NumOfFPRsSaved = 0
; CHECK-NEXT: .byte 0x00 # -HasExtensionTable, -HasVectorInfo, NumOfGPRsSaved = 0
; CHECK-NEXT: .byte 0x00 # NumberOfFixedParms = 0
; CHECK-NEXT: .byte 0x01 # NumberOfFPParms = 0, +HasParmsOnStack
; CHECK-NEXT: .vbyte 4, L..bar0-.bar # Function size
; CHECK-NEXT: .vbyte 2, 0x0003 # Function name len = 3
; CHECK-NEXT: .byte "bar" # Function Name
; CHECK-NEXT: L..func_end0:
; CHECK-NEXT: # -- End function
; CHECK-NEXT: .csect explicit_main_sec[PR],5
; CHECK-NEXT: .globl main[DS] # -- Begin function main
; CHECK-NEXT: .globl .main
; CHECK-NEXT: .align 2
; CHECK-NEXT: .csect main[DS],2
; CHECK-NEXT: .vbyte 4, .main # @main
; CHECK-NEXT: .vbyte 4, TOC[TC0]
; CHECK-NEXT: .vbyte 4, 0
; CHECK-NEXT: .csect explicit_main_sec[PR],5
; CHECK-NEXT: .main:
; CHECK-NEXT: L..func_begin1:
; CHECK-NEXT: # %bb.0: # %entry
; CHECK-NEXT: L..tmp3:
; CHECK-NEXT: mflr 0
; CHECK-NEXT: stwu 1, -64(1)
; CHECK-NEXT: li 3, 0
; CHECK-NEXT: stw 0, 72(1)
; CHECK-NEXT: stw 3, 60(1)
; CHECK-NEXT: L..tmp4:
; CHECK-NEXT: L..tmp5:
; CHECK-NEXT: bl .bar
; CHECK-NEXT: nop
; CHECK-NEXT: L..tmp6:
; CHECK-NEXT: addi 1, 1, 64
; CHECK-NEXT: lwz 0, 8(1)
; CHECK-NEXT: mtlr 0
; CHECK-NEXT: blr
; CHECK-NEXT: L..tmp7:
; CHECK-NEXT: L..main0:
; CHECK-NEXT: .vbyte 4, 0x00000000 # Traceback table begin
; CHECK-NEXT: .byte 0x00 # Version = 0
; CHECK-NEXT: .byte 0x09 # Language = CPlusPlus
; CHECK-NEXT: .byte 0x20 # -IsGlobaLinkage, -IsOutOfLineEpilogOrPrologue
; CHECK-NEXT: # +HasTraceBackTableOffset, -IsInternalProcedure
; CHECK-NEXT: # -HasControlledStorage, -IsTOCless
; CHECK-NEXT: # -IsFloatingPointPresent
; CHECK-NEXT: # -IsFloatingPointOperationLogOrAbortEnabled
; CHECK-NEXT: .byte 0x41 # -IsInterruptHandler, +IsFunctionNamePresent, -IsAllocaUsed
; CHECK-NEXT: # OnConditionDirective = 0, -IsCRSaved, +IsLRSaved
; CHECK-NEXT: .byte 0x80 # +IsBackChainStored, -IsFixup, NumOfFPRsSaved = 0
; CHECK-NEXT: .byte 0x00 # -HasExtensionTable, -HasVectorInfo, NumOfGPRsSaved = 0
; CHECK-NEXT: .byte 0x00 # NumberOfFixedParms = 0
; CHECK-NEXT: .byte 0x01 # NumberOfFPParms = 0, +HasParmsOnStack
; CHECK-NEXT: .vbyte 4, L..main0-.main # Function size
; CHECK-NEXT: .vbyte 2, 0x0004 # Function name len = 4
; CHECK-NEXT: .byte "main" # Function Name
; CHECK-NEXT: L..func_end1:
; CHECK-NEXT: # -- End function
; CHECK-NEXT: L..sec_end0:
; CHECK: .dwsect 0x60000
; CHECK-NEXT: L...dwabrev:
; CHECK-NEXT: .byte 1 # Abbreviation Code
; CHECK-NEXT: .byte 17 # DW_TAG_compile_unit
; CHECK-NEXT: .byte 1 # DW_CHILDREN_yes
; CHECK-NEXT: .byte 37 # DW_AT_producer
; CHECK-NEXT: .byte 14 # DW_FORM_strp
; CHECK-NEXT: .byte 19 # DW_AT_language
; CHECK-NEXT: .byte 5 # DW_FORM_data2
; CHECK-NEXT: .byte 3 # DW_AT_name
; CHECK-NEXT: .byte 14 # DW_FORM_strp
; CHECK-NEXT: .byte 16 # DW_AT_stmt_list
; CHECK-NEXT: .byte 6 # DW_FORM_data4
; CHECK-NEXT: .byte 27 # DW_AT_comp_dir
; CHECK-NEXT: .byte 14 # DW_FORM_strp
; CHECK-NEXT: .byte 17 # DW_AT_low_pc
; CHECK-NEXT: .byte 1 # DW_FORM_addr
; CHECK-NEXT: .byte 85 # DW_AT_ranges
; CHECK-NEXT: .byte 6 # DW_FORM_data4
; CHECK-NEXT: .byte 0 # EOM(1)
; CHECK-NEXT: .byte 0 # EOM(2)
; CHECK-NEXT: .byte 2 # Abbreviation Code
; CHECK-NEXT: .byte 46 # DW_TAG_subprogram
; CHECK-NEXT: .byte 0 # DW_CHILDREN_no
; CHECK-NEXT: .byte 17 # DW_AT_low_pc
; CHECK-NEXT: .byte 1 # DW_FORM_addr
; CHECK-NEXT: .byte 18 # DW_AT_high_pc
; CHECK-NEXT: .byte 1 # DW_FORM_addr
; CHECK-NEXT: .byte 64 # DW_AT_frame_base
; CHECK-NEXT: .byte 10 # DW_FORM_block1
; CHECK-NEXT: .byte 3 # DW_AT_name
; CHECK-NEXT: .byte 14 # DW_FORM_strp
; CHECK-NEXT: .byte 58 # DW_AT_decl_file
; CHECK-NEXT: .byte 11 # DW_FORM_data1
; CHECK-NEXT: .byte 59 # DW_AT_decl_line
; CHECK-NEXT: .byte 11 # DW_FORM_data1
; CHECK-NEXT: .byte 73 # DW_AT_type
; CHECK-NEXT: .byte 19 # DW_FORM_ref4
; CHECK-NEXT: .byte 63 # DW_AT_external
; CHECK-NEXT: .byte 12 # DW_FORM_flag
; CHECK-NEXT: .byte 0 # EOM(1)
; CHECK-NEXT: .byte 0 # EOM(2)
; CHECK-NEXT: .byte 3 # Abbreviation Code
; CHECK-NEXT: .byte 36 # DW_TAG_base_type
; CHECK-NEXT: .byte 0 # DW_CHILDREN_no
; CHECK-NEXT: .byte 3 # DW_AT_name
; CHECK-NEXT: .byte 14 # DW_FORM_strp
; CHECK-NEXT: .byte 62 # DW_AT_encoding
; CHECK-NEXT: .byte 11 # DW_FORM_data1
; CHECK-NEXT: .byte 11 # DW_AT_byte_size
; CHECK-NEXT: .byte 11 # DW_FORM_data1
; CHECK-NEXT: .byte 0 # EOM(1)
; CHECK-NEXT: .byte 0 # EOM(2)
; CHECK-NEXT: .byte 0 # EOM(3)
; CHECK: .dwsect 0x10000
; CHECK-NEXT: L...dwinfo:
; CHECK-NEXT: L..cu_begin0:
; CHECK-NEXT: .vbyte 2, 3 # DWARF version number
; CHECK-NEXT: .vbyte 4, L...dwabrev # Offset Into Abbrev. Section
; CHECK-NEXT: .byte 4 # Address Size (in bytes)
; CHECK-NEXT: .byte 1 # Abbrev [1] 0xb:0x4f DW_TAG_compile_unit
; CHECK-NEXT: .vbyte 4, L..info_string0 # DW_AT_producer
; CHECK-NEXT: .vbyte 2, 12 # DW_AT_language
; CHECK-NEXT: .vbyte 4, L..info_string1 # DW_AT_name
; CHECK-NEXT: .vbyte 4, L..line_table_start0 # DW_AT_stmt_list
; CHECK-NEXT: .vbyte 4, L..info_string2 # DW_AT_comp_dir
; CHECK-NEXT: .vbyte 4, 0 # DW_AT_low_pc
; CHECK-NEXT: .vbyte 4, L..debug_ranges0 # DW_AT_ranges
; CHECK-NEXT: .byte 2 # Abbrev [2] 0x26:0x16 DW_TAG_subprogram
; CHECK-NEXT: .vbyte 4, L..func_begin0 # DW_AT_low_pc
; CHECK-NEXT: .vbyte 4, L..func_end0 # DW_AT_high_pc
; CHECK-NEXT: .byte 1 # DW_AT_frame_base
; CHECK-NEXT: .byte 81
; CHECK-NEXT: .vbyte 4, L..info_string3 # DW_AT_name
; CHECK-NEXT: .byte 1 # DW_AT_decl_file
; CHECK-NEXT: .byte 1 # DW_AT_decl_line
; CHECK-NEXT: .vbyte 4, 82 # DW_AT_type
; CHECK-NEXT: .byte 1 # DW_AT_external
; CHECK-NEXT: .byte 2 # Abbrev [2] 0x3c:0x16 DW_TAG_subprogram
; CHECK-NEXT: .vbyte 4, L..func_begin1 # DW_AT_low_pc
; CHECK-NEXT: .vbyte 4, L..func_end1 # DW_AT_high_pc
; CHECK-NEXT: .byte 1 # DW_AT_frame_base
; CHECK-NEXT: .byte 81
; CHECK-NEXT: .vbyte 4, L..info_string5 # DW_AT_name
; CHECK-NEXT: .byte 1 # DW_AT_decl_file
; CHECK-NEXT: .byte 2 # DW_AT_decl_line
; CHECK-NEXT: .vbyte 4, 82 # DW_AT_type
; CHECK-NEXT: .byte 1 # DW_AT_external
; CHECK-NEXT: .byte 3 # Abbrev [3] 0x52:0x7 DW_TAG_base_type
; CHECK-NEXT: .vbyte 4, L..info_string4 # DW_AT_name
; CHECK-NEXT: .byte 5 # DW_AT_encoding
; CHECK-NEXT: .byte 4 # DW_AT_byte_size
; CHECK-NEXT: .byte 0 # End Of Children Mark
; CHECK-NEXT: L..debug_info_end0:
; CHECK: .dwsect 0x80000
; CHECK-NEXT: L...dwrnges:
; CHECK-NEXT: L..debug_ranges0:
; CHECK-NEXT: .vbyte 4, L..func_begin0
; CHECK-NEXT: .vbyte 4, L..func_end0
; CHECK-NEXT: .vbyte 4, L..func_begin1
; CHECK-NEXT: .vbyte 4, L..func_end1
; CHECK-NEXT: .vbyte 4, 0
; CHECK-NEXT: .vbyte 4, 0
; CHECK: .dwsect 0x70000
; CHECK-NEXT: L...dwstr:
; CHECK-NEXT: L..info_string0:
; CHECK-NEXT: .string "clang version 13.0.0" # string offset=0
; CHECK-NEXT: L..info_string1:
; CHECK-NEXT: .string "2.c" # string offset=21
; CHECK-NEXT: L..info_string2:
; CHECK-NEXT: .string "debug" # string offset=25
; CHECK-NEXT: L..info_string3:
; CHECK-NEXT: .string "bar" # string offset=31
; CHECK-NEXT: L..info_string4:
; CHECK-NEXT: .string "int" # string offset=35
; CHECK-NEXT: L..info_string5:
; CHECK-NEXT: .string "main" # string offset=39
; CHECK-NEXT: .toc
; CHECK: .dwsect 0x20000
; CHECK-NEXT: L...dwline:
; CHECK-NEXT: L..debug_line_0:
; CHECK-NEXT: .set L..line_table_start0, L..debug_line_0-4
; CHECK-NEXT: .vbyte 2, 3
; CHECK-NEXT: .vbyte 4, L..prologue_end0-L..prologue_start0
; CHECK-NEXT: L..prologue_start0:
; CHECK-NEXT: .byte 4
; CHECK-NEXT: .byte 1
; CHECK-NEXT: .byte -5
; CHECK-NEXT: .byte 14
; CHECK-NEXT: .byte 13
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .byte 1
; CHECK-NEXT: .byte 1
; CHECK-NEXT: .byte 1
; CHECK-NEXT: .byte 1
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .byte 1
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .byte 1
; CHECK-NEXT: .byte "debug"
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .byte "2.c"
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .byte 1
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .byte 0
; CHECK-NEXT: L..prologue_end0:
; CHECK-NEXT: .byte 0 # Set address to L..tmp0
; CHECK-NEXT: .byte 5
; CHECK-NEXT: .byte 2
; CHECK-NEXT: .vbyte 4, L..tmp0
; CHECK-NEXT: .byte 1 # Start sequence
; CHECK-NEXT: .byte 5
; CHECK-NEXT: .byte 12
; CHECK-NEXT: .byte 10
; CHECK-NEXT: .byte 0 # Set address to L..tmp1
; CHECK-NEXT: .byte 5
; CHECK-NEXT: .byte 2
; CHECK-NEXT: .vbyte 4, L..tmp1
; CHECK-NEXT: .byte 3 # Advance line 0
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .byte 1
; CHECK-NEXT: .byte 0 # Set address to L..func_end0
; CHECK-NEXT: .byte 5
; CHECK-NEXT: .byte 2
; CHECK-NEXT: .vbyte 4, L..func_end0
; CHECK-NEXT: .byte 0 # End sequence
; CHECK-NEXT: .byte 1
; CHECK-NEXT: .byte 1
; CHECK-NEXT: .byte 0 # Set address to L..tmp3
; CHECK-NEXT: .byte 5
; CHECK-NEXT: .byte 2
; CHECK-NEXT: .vbyte 4, L..tmp3
; CHECK-NEXT: .byte 19 # Start sequence
; CHECK-NEXT: .byte 5
; CHECK-NEXT: .byte 10
; CHECK-NEXT: .byte 10
; CHECK-NEXT: .byte 0 # Set address to L..tmp5
; CHECK-NEXT: .byte 5
; CHECK-NEXT: .byte 2
; CHECK-NEXT: .vbyte 4, L..tmp5
; CHECK-NEXT: .byte 3 # Advance line 1
; CHECK-NEXT: .byte 1
; CHECK-NEXT: .byte 1
; CHECK-NEXT: .byte 5
; CHECK-NEXT: .byte 3
; CHECK-NEXT: .byte 6
; CHECK-NEXT: .byte 0 # Set address to L..tmp6
; CHECK-NEXT: .byte 5
; CHECK-NEXT: .byte 2
; CHECK-NEXT: .vbyte 4, L..tmp6
; CHECK-NEXT: .byte 3 # Advance line 0
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .byte 1
; CHECK-NEXT: .byte 0 # Set address to L..func_end1
; CHECK-NEXT: .byte 5
; CHECK-NEXT: .byte 2
; CHECK-NEXT: .vbyte 4, L..func_end1
; CHECK-NEXT: .byte 0 # End sequence
; CHECK-NEXT: .byte 1
; CHECK-NEXT: .byte 1
; CHECK-NEXT: L..debug_line_end0:
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