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clang-p2996/llvm/test/tools/llvm-cgdata/error.test
Zhaoxuan Jiang 713702109a [CGData] Make an option to skip reading Names into StableFunctionMap (#142095)
Names are used for debugging purpose and have no impact on codegen. For
a non-trivial project, reading them consumes a lot of memory and slows
down the compilation significantly. This patch adds a field in the
indexed CGData to remember the total size of Names, and creates a
command-line option to skip reading Names by advancing the pointer when
deserializing the indexed CGData.
2025-06-10 07:33:40 -07:00

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# Test various error cases
# Synthesize a header only cgdata.
# struct Header {
# uint64_t Magic;
# uint32_t Version;
# uint32_t DataKind;
# uint64_t OutlinedHashTreeOffset;
# uint64_t StableFunctionMapOffset;
# }
RUN: touch %t_empty.cgdata
RUN: not llvm-cgdata --show %t_empty.cgdata 2>&1 | FileCheck %s --check-prefix=EMPTY
EMPTY: {{.}}cgdata: empty codegen data
# Not a magic.
RUN: printf '\xff' > %t_malformed.cgdata
RUN: not llvm-cgdata --show %t_malformed.cgdata 2>&1 | FileCheck %s --check-prefix=MALFORMED
MALFORMED: {{.}}cgdata: malformed codegen data
# The minimum header size is 24.
RUN: printf '\xffcgdata\x81' > %t_corrupt.cgdata
RUN: not llvm-cgdata --show %t_corrupt.cgdata 2>&1 | FileCheck %s --check-prefix=CORRUPT
CORRUPT: {{.}}cgdata: invalid codegen data (file header is corrupt)
# The current version 3 while the header says 4.
RUN: printf '\xffcgdata\x81' > %t_version.cgdata
RUN: printf '\x04\x00\x00\x00' >> %t_version.cgdata
RUN: printf '\x00\x00\x00\x00' >> %t_version.cgdata
RUN: printf '\x20\x00\x00\x00\x00\x00\x00\x00' >> %t_version.cgdata
RUN: printf '\x20\x00\x00\x00\x00\x00\x00\x00' >> %t_version.cgdata
RUN: not llvm-cgdata --show %t_version.cgdata 2>&1 | FileCheck %s --check-prefix=BAD_VERSION
BAD_VERSION: {{.}}cgdata: unsupported codegen data version
# Header says an outlined hash tree, but the file ends after the header.
RUN: printf '\xffcgdata\x81' > %t_eof.cgdata
RUN: printf '\x02\x00\x00\x00' >> %t_eof.cgdata
RUN: printf '\x01\x00\x00\x00' >> %t_eof.cgdata
RUN: printf '\x20\x00\x00\x00\x00\x00\x00\x00' >> %t_eof.cgdata
RUN: printf '\x20\x00\x00\x00\x00\x00\x00\x00' >> %t_eof.cgdata
RUN: not llvm-cgdata --show %t_eof.cgdata 2>&1 | FileCheck %s --check-prefix=EOF
EOF: {{.}}cgdata: end of File