[llvm] [BOLT][DWARF][NFC] Adds test that mixes input (PR #97838)

[Sayhaan Siddiqui via llvm-commits]

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@@ -0,0 +1,82 @@
+; RUN: rm -rf %t
+; RUN: mkdir %t
+; RUN: cd %t
+; RUN: llvm-mc -dwarf-version=4 -filetype=obj -triple x86_64-unknown-linux %p/Inputs/dwarf4-df-input-lowpc-ranges-main.s \
+; RUN: -split-dwarf-file=main.dwo -o main.o
+; RUN: llvm-mc -dwarf-version=4 -filetype=obj -triple x86_64-unknown-linux %p/Inputs/dwarf4-df-input-lowpc-ranges-cus-other.s \
+; RUN: -split-dwarf-file=mainOther.dwo -o other.o
+; RUN: %clang %cflags -gdwarf-4 -gsplit-dwarf=split main.o other.o -o main.exe
+; RUN: llvm-bolt main.exe -o main.exe.bolt --update-debug-sections
+; RUN: llvm-dwarfdump --show-form --verbose --debug-ranges main.exe.bolt &> %t/foo.txt
+; RUN: llvm-dwarfdump --show-form --verbose --debug-info main.exe.bolt >> %t/foo.txt
+; RUN: cat %t/foo.txt | FileCheck -check-prefix=BOLT %s
+; RUN: not llvm-dwarfdump --show-form --verbose --debug-info main.dwo.dwo mainOther.dwo.dwo &> %t/mainddwodwo.txt
+; RUN: cat %t/mainddwodwo.txt | FileCheck -check-prefix=BOLT-DWO-MAIN %s
+
+;; Tests that BOLT correctly handles mixed input with DW_AT_high_pc/DW_at_low_pc and DW_AT_low_pc/DW_AT_ranges.
+
+; BOLT: .debug_ranges
+; BOLT-NEXT: 00000000 <End of list>
+; BOLT-NEXT: 00000010 [[#%.16x,ADDR1:]] [[#%.16x,ADDRB1:]]
+; BOLT-NEXT: 00000010 [[#%.16x,ADDR2:]] [[#%.16x,ADDRB2:]]
+; BOLT-NEXT: 00000010 [[#%.16x,ADDR3:]] [[#%.16x,ADDRB3:]]
+; BOLT-NEXT: 00000010 [[#%.16x,ADDR4:]] [[#%.16x,ADDRB4:]]
+; BOLT-NEXT: 00000010 [[#%.16x,ADDR5:]] [[#%.16x,ADDRB5:]]
+; BOLT-NEXT: 00000010 [[#%.16x,ADDR6:]] [[#%.16x,ADDRB6:]]
+; BOLT-NEXT: 00000010 [[#%.16x,ADDR7:]] [[#%.16x,ADDRB7:]]
+; BOLT-NEXT: 00000010 <End of list>
+; BOLT-NEXT: 00000090 <End of list>
+; BOLT-NEXT: 000000a0 [[#%.16x,ADDR1:]] [[#%.16x,ADDRB1:]]
+; BOLT-NEXT: 000000a0 [[#%.16x,ADDR2:]] [[#%.16x,ADDRB2:]]
+; BOLT-NEXT: 000000a0 [[#%.16x,ADDR3:]] [[#%.16x,ADDRB3:]]
+; BOLT-NEXT: 000000a0 <End of list>
+; BOLT-NEXT: 000000e0 [[#%.16x,ADDR5:]] [[#%.16x,ADDRB5:]]
+; BOLT-NEXT: 000000e0 [[#%.16x,ADDR6:]] [[#%.16x,ADDRB6:]]
+; BOLT-NEXT: 000000e0 [[#%.16x,ADDR7:]] [[#%.16x,ADDRB7:]]
+; BOLT-NEXT: 000000e0 <End of list>
+; BOLT-NEXT: 00000120 [[#%.16x,ADDR8:]] [[#%.16x,ADDRB8:]]
+; BOLT-NEXT: 00000120 [[#%.16x,ADDR9:]] [[#%.16x,ADDRB9:]]
+; BOLT-NEXT: 00000120 [[#%.16x,ADDR10:]] [[#%.16x,ADDRB10:]]
+; BOLT-NEXT: 00000120 <End of list>
+; BOLT-NEXT: 00000160 <End of list>
+
+; BOLT: DW_TAG_compile_unit
+; BOLT: DW_AT_GNU_dwo_name [DW_FORM_strp] ( .debug_str[0x{{[0-9a-fA-F]+}}] = "main.dwo.dwo")
+; BOLT-NEXT: DW_AT_GNU_dwo_id
+; BOLT-NEXT: DW_AT_GNU_ranges_base [DW_FORM_sec_offset]  (0x00000090)
+; BOLT-NEXT: DW_AT_low_pc [DW_FORM_addr] (0x0000000000000000)
+; BOLT-NEXT: DW_AT_ranges [DW_FORM_sec_offset] (0x00000010
+; BOLT-NEXT: [0x[[#ADDR1]], 0x[[#ADDRB1]])
+; BOLT-NEXT: [0x[[#ADDR2]], 0x[[#ADDRB2]])
+; BOLT-NEXT: [0x[[#ADDR3]], 0x[[#ADDRB3]])
+; BOLT-NEXT: [0x[[#ADDR4]], 0x[[#ADDRB4]])
+; BOLT-NEXT: [0x[[#ADDR5]], 0x[[#ADDRB5]])
+; BOLT-NEXT: [0x[[#ADDR6]], 0x[[#ADDRB6]])
+; BOLT-NEXT: [0x[[#ADDR7]], 0x[[#ADDRB7]])
+; BOLT-NEXT: DW_AT_GNU_addr_base [DW_FORM_sec_offset]  (0x00000000)
+; BOLT-NEXT: Compile Unit
+
+; BOLT: DW_TAG_compile_unit
+; BOLT: DW_AT_GNU_dwo_name [DW_FORM_strp] ( .debug_str[0x{{[0-9a-fA-F]+}}] = "mainOther.dwo.dwo")
+; BOLT-NEXT: DW_AT_GNU_dwo_id
+; BOLT-NEXT: DW_AT_low_pc [DW_FORM_addr] (0x0000000000000000)
+; BOLT-NEXT: DW_AT_ranges [DW_FORM_sec_offset] (0x00000120
+; BOLT-NEXT: [0x[[#ADDR8]], 0x[[#ADDRB8]])
+; BOLT-NEXT: [0x[[#ADDR9]], 0x[[#ADDRB9]])
+; BOLT-NEXT: [0x[[#ADDR10]], 0x[[#ADDRB10]])
+; BOLT-NEXT: DW_AT_GNU_addr_base [DW_FORM_sec_offset]  (0x00000018)
+; BOLT-NEXT: DW_AT_GNU_ranges_base [DW_FORM_sec_offset]  (0x00000160)
+; BOLT: {{^$}}
----------------
sayhaan wrote:

This was the check for the empty line that we discussed because we ran into an edge case where the test still passed even with fields that didn't belong there. The one for the CU above checks for a Compile Unit on the next line but since this is the last CU it checks for an empty line.

https://github.com/llvm/llvm-project/pull/97838