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TheRock/compiler/amd-llvm/llvm/test/tools/llvm-cgdata/empty.test
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derek.holloway 7502bf64a4
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2026-09-02 16:34:47 -07:00

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# Test no input file
RUN: not llvm-cgdata --convert --output - 2>&1 | FileCheck %s --check-prefix=NOFILE --ignore-case
NOFILE: error: No input file is specified.
# Test for empty cgdata file, which is invalid.
RUN: touch %t_emptyfile.cgtext
RUN: not llvm-cgdata --convert %t_emptyfile.cgtext --format text 2>&1 | FileCheck %s --check-prefix=EMPTY
EMPTY: {{.}}emptyfile.cgtext: empty codegen data
# Test for empty header in the text format. It can be converted to a valid binary file.
RUN: printf '#' > %t_emptyheader.cgtext
RUN: llvm-cgdata --convert %t_emptyheader.cgtext --format binary -o %t_emptyheader.cgdata
# Without any cgdata other than the header, no data shows by default.
RUN: llvm-cgdata --show %t_emptyheader.cgdata | count 0
# The version number appears when asked, as it's in the header
RUN: llvm-cgdata --show --cgdata-version %t_emptyheader.cgdata | FileCheck %s --check-prefix=VERSION
VERSION: Version: 4
# When converting a binary file (w/ the header only) to a text file, it's an empty file as the text format does not have an explicit header.
RUN: llvm-cgdata --convert %t_emptyheader.cgdata --format text | count 0
# Synthesize a header only cgdata.
# struct Header {
# uint64_t Magic;
# uint32_t Version;
# uint32_t DataKind;
# uint64_t OutlinedHashTreeOffset;
# uint64_t StableFunctionMapOffset;
# }
RUN: printf '\377cgdata\201' > %t_header.cgdata
RUN: printf '\004\000\000\000' >> %t_header.cgdata
RUN: printf '\000\000\000\000' >> %t_header.cgdata
RUN: printf '\040\000\000\000\000\000\000\000' >> %t_header.cgdata
RUN: printf '\040\000\000\000\000\000\000\000' >> %t_header.cgdata
RUN: diff %t_header.cgdata %t_emptyheader.cgdata