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liblzma: Fix building with NVHPC (NVIDIA HPC SDK).
NVHPC compiler has several issues that make it impossible to build liblzma: - the compiler cannot handle unions that contain pointers that are not the first members; - the compiler cannot handle the assembler code in range_decoder.h (LZMA_RANGE_DECODER_CONFIG has to be set to zero); - the compiler fails to produce valid code for delta_decode if the vectorization is enabled, which results in failed tests. This introduces NVHPC-specific workarounds that address the issues.
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3 changed files with 8 additions and 2 deletions
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@ -217,12 +217,14 @@ typedef struct {
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uint16_t offset;
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union {
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// NVHPC has problems with unions that contain pointers that are not the first
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// members
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const name_value_map *map;
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struct {
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uint32_t min;
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uint32_t max;
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} range;
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const name_value_map *map;
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} u;
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} option_map;
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@ -25,6 +25,9 @@ decode_buffer(lzma_delta_coder *coder, uint8_t *buffer, size_t size)
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}
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#ifdef __NVCOMPILER
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# pragma routine novector
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#endif
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static lzma_ret
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delta_decode(void *coder_ptr, const lzma_allocator *allocator,
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const uint8_t *restrict in, size_t *restrict in_pos,
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@ -45,6 +45,7 @@
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// and different processors. Overall 0x1F0 seems to be the best choice.
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#ifndef LZMA_RANGE_DECODER_CONFIG
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# if defined(__x86_64__) && !defined(__ILP32__) \
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&& !defined(__NVCOMPILER) \
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&& (defined(__GNUC__) || defined(__clang__))
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# define LZMA_RANGE_DECODER_CONFIG 0x1F0
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# else
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