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nir: Delete all traces of nir_op_fexp

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Nothing produces it, and nothing can consume it.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Acked-by: Jason Ekstrand <jason.ekstrand@intel.com>
This commit is contained in:
Ian Romanick 2015-05-06 17:00:18 -07:00
parent a45d55f17c
commit e0a17f6e31
3 changed files with 0 additions and 9 deletions
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1
src/glsl/nir/nir_opcodes.py
View file

@ -153,7 +153,6 @@ unop("fsat", tfloat, "(src0 > 1.0f) ? 1.0f : ((src0 <= 0.0f) ? 0.0f : src0)")
unop("frcp", tfloat, "1.0f / src0")
unop("frsq", tfloat, "1.0f / sqrtf(src0)")
unop("fsqrt", tfloat, "sqrtf(src0)")
unop("fexp", tfloat, "expf(src0)") # < e^x
unop("flog", tfloat, "logf(src0)") # log base e
unop("fexp2", tfloat, "exp2f(src0)")
unop("flog2", tfloat, "log2f(src0)")

7
src/glsl/nir/nir_opt_algebraic.py
View file

@ -149,22 +149,16 @@ optimizations = [
(('ushr', a, 0), a),
# Exponential/logarithmic identities
(('fexp2', ('flog2', a)), a), # 2^lg2(a) = a
(('fexp', ('flog', a)), a), # e^ln(a) = a
(('flog2', ('fexp2', a)), a), # lg2(2^a) = a
(('flog', ('fexp', a)), a), # ln(e^a) = a
(('fpow', a, b), ('fexp2', ('fmul', ('flog2', a), b)), 'options->lower_fpow'), # a^b = 2^(lg2(a)*b)
(('fexp2', ('fmul', ('flog2', a), b)), ('fpow', a, b), '!options->lower_fpow'), # 2^(lg2(a)*b) = a^b
(('fexp', ('fmul', ('flog', a), b)), ('fpow', a, b), '!options->lower_fpow'), # e^(ln(a)*b) = a^b
(('fpow', a, 1.0), a),
(('fpow', a, 2.0), ('fmul', a, a)),
(('fpow', a, 4.0), ('fmul', ('fmul', a, a), ('fmul', a, a))),
(('fpow', 2.0, a), ('fexp2', a)),
(('fsqrt', ('fexp2', a)), ('fexp2', ('fmul', 0.5, a))),
(('fsqrt', ('fexp', a)), ('fexp', ('fmul', 0.5, a))),
(('frcp', ('fexp2', a)), ('fexp2', ('fneg', a))),
(('frcp', ('fexp', a)), ('fexp', ('fneg', a))),
(('frsq', ('fexp2', a)), ('fexp2', ('fmul', -0.5, a))),
(('frsq', ('fexp', a)), ('fexp', ('fmul', -0.5, a))),
(('flog2', ('fsqrt', a)), ('fmul', 0.5, ('flog2', a))),
(('flog', ('fsqrt', a)), ('fmul', 0.5, ('flog', a))),
(('flog2', ('frcp', a)), ('fneg', ('flog2', a))),
@ -178,7 +172,6 @@ optimizations = [
(('fadd', ('flog2', a), ('fneg', ('flog2', b))), ('flog2', ('fdiv', a, b))),
(('fadd', ('flog', a), ('fneg', ('flog', b))), ('flog', ('fdiv', a, b))),
(('fmul', ('fexp2', a), ('fexp2', b)), ('fexp2', ('fadd', a, b))),
(('fmul', ('fexp', a), ('fexp', b)), ('fexp', ('fadd', a, b))),
# Division and reciprocal
(('fdiv', 1.0, a), ('frcp', a)),
(('frcp', ('frcp', a)), a),

1
src/mesa/drivers/dri/i965/brw_fs_nir.cpp
View file

@ -722,7 +722,6 @@ fs_visitor::nir_emit_alu(nir_alu_instr *instr)
inst->saturate = instr->dest.saturate;
break;
case nir_op_fexp:
case nir_op_flog:
unreachable("not reached: should be handled by ir_explog_to_explog2");