Module: Mesa Branch: master Commit: ce5581e23e54be91e4c1ad6a6c5990eca6677ceb URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=ce5581e23e54be91e4c1ad6a6c5990eca6677ceb
Author: Jason Ekstrand <[email protected]> Date: Thu Jun 20 10:36:10 2019 -0500 nir: Add more helpers for working with const values Reviewed-by: Timothy Arceri <[email protected]> --- src/compiler/nir/nir.c | 35 +++++++++++++++++ src/compiler/nir/nir.h | 100 +++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 135 insertions(+) diff --git a/src/compiler/nir/nir.c b/src/compiler/nir/nir.c index 4f2da2d431f..e0fcc17526c 100644 --- a/src/compiler/nir/nir.c +++ b/src/compiler/nir/nir.c @@ -1204,6 +1204,41 @@ nir_foreach_src(nir_instr *instr, nir_foreach_src_cb cb, void *state) return nir_foreach_dest(instr, visit_dest_indirect, &dest_state); } +nir_const_value +nir_const_value_for_float(double f, unsigned bit_size) +{ + nir_const_value v; + memset(&v, 0, sizeof(v)); + + switch (bit_size) { + case 16: + v.u16 = _mesa_float_to_half(f); + break; + case 32: + v.f32 = f; + break; + case 64: + v.f64 = f; + break; + default: + unreachable("Invalid bit size"); + } + + return v; +} + +double +nir_const_value_as_float(nir_const_value value, unsigned bit_size) +{ + switch (bit_size) { + case 16: return _mesa_half_to_float(value.u16); + case 32: return value.f32; + case 64: return value.f64; + default: + unreachable("Invalid bit size"); + } +} + int64_t nir_src_comp_as_int(nir_src src, unsigned comp) { diff --git a/src/compiler/nir/nir.h b/src/compiler/nir/nir.h index 4db3fb5e2b1..5983da2e2fe 100644 --- a/src/compiler/nir/nir.h +++ b/src/compiler/nir/nir.h @@ -140,6 +140,106 @@ typedef union { arr[i] = c[i].m; \ } while (false) +static inline nir_const_value +nir_const_value_for_raw_uint(uint64_t x, unsigned bit_size) +{ + nir_const_value v; + memset(&v, 0, sizeof(v)); + + switch (bit_size) { + case 1: v.b = x; break; + case 8: v.u8 = x; break; + case 16: v.u16 = x; break; + case 32: v.u32 = x; break; + case 64: v.u64 = x; break; + default: + unreachable("Invalid bit size"); + } + + return v; +} + +static inline nir_const_value +nir_const_value_for_int(int64_t i, unsigned bit_size) +{ + nir_const_value v; + memset(&v, 0, sizeof(v)); + + assert(bit_size <= 64); + if (bit_size < 64) { + assert(i >= (-(1ll << (bit_size - 1)))); + assert(i < (1ll << (bit_size - 1))); + } + + return nir_const_value_for_raw_uint(i, bit_size); +} + +static inline nir_const_value +nir_const_value_for_uint(uint64_t u, unsigned bit_size) +{ + nir_const_value v; + memset(&v, 0, sizeof(v)); + + assert(bit_size <= 64); + if (bit_size < 64) + assert(u < (1ull << bit_size)); + + return nir_const_value_for_raw_uint(u, bit_size); +} + +static inline nir_const_value +nir_const_value_for_bool(bool b, unsigned bit_size) +{ + /* Booleans use a 0/-1 convention */ + return nir_const_value_for_int(-(int)b, bit_size); +} + +/* This one isn't inline because it requires half-float conversion */ +nir_const_value nir_const_value_for_float(double b, unsigned bit_size); + +static inline int64_t +nir_const_value_as_int(nir_const_value value, unsigned bit_size) +{ + switch (bit_size) { + /* int1_t uses 0/-1 convention */ + case 1: return -(int)value.b; + case 8: return value.i8; + case 16: return value.i16; + case 32: return value.i32; + case 64: return value.i64; + default: + unreachable("Invalid bit size"); + } +} + +static inline int64_t +nir_const_value_as_uint(nir_const_value value, unsigned bit_size) +{ + switch (bit_size) { + case 1: return value.b; + case 8: return value.u8; + case 16: return value.u16; + case 32: return value.u32; + case 64: return value.u64; + default: + unreachable("Invalid bit size"); + } +} + +static inline bool +nir_const_value_as_bool(nir_const_value value, unsigned bit_size) +{ + int64_t i = nir_const_value_as_int(value, bit_size); + + /* Booleans of any size use 0/-1 convention */ + assert(i == 0 || i == -1); + + return i; +} + +/* This one isn't inline because it requires half-float conversion */ +double nir_const_value_as_float(nir_const_value value, unsigned bit_size); + typedef struct nir_constant { /** * Value of the constant. _______________________________________________ mesa-commit mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/mesa-commit
