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nir: replace GCC unroll with an option that works on GCC < 8.0

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Reviewed-by: Eric Anholt <eric@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3970>
This commit is contained in:
Marek Olšák
2020-02-26 16:57:37 -05:00
parent 1a61a5b1d4
commit d18d07c9d7
1 changed files with 14 additions and 8 deletions
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src/compiler/nir/nir_range_analysis.c
+14 -8
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@@ -220,17 +220,23 @@ analyze_constant(const struct nir_alu_instr *instr, unsigned src,
#if defined(__clang__)
/* clang wants _Pragma("unroll X") */
#define pragma_unroll_5 _Pragma("unroll 5")
#define pragma_unroll_7 _Pragma("unroll 7")
/* clang wants _Pragma("unroll X") */
#define pragma_unroll_5 _Pragma("unroll 5")
#define pragma_unroll_7 _Pragma("unroll 7")
/* gcc wants _Pragma("GCC unroll X") */
#elif defined(__GNUC__)
#define pragma_unroll_5 _Pragma("GCC unroll 5")
#define pragma_unroll_7 _Pragma("GCC unroll 7")
#if __GNUC__ >= 8
#define pragma_unroll_5 _Pragma("GCC unroll 5")
#define pragma_unroll_7 _Pragma("GCC unroll 7")
#else
#pragma GCC optimize ("unroll-loops")
#define pragma_unroll_5
#define pragma_unroll_7
#endif
#else
/* MSVC doesn't have C99's _Pragma() */
#define pragma_unroll_5
#define pragma_unroll_7
/* MSVC doesn't have C99's _Pragma() */
#define pragma_unroll_5
#define pragma_unroll_7
#endif