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Narrow or widen the vector element without changing the vector size

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This commit is contained in:
Luca Barbato 2017-08-07 07:25:59 +00:00
parent bb47972d4c
commit 380b81853e
1 changed files with 9 additions and 1 deletions
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10
src/etc/platform-intrinsics/generator.py
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@ -19,7 +19,7 @@ import itertools
SPEC = re.compile(
r'^(?:(?P<void>V)|(?P<id>[iusfIUSF])(?:\((?P<start>\d+)-(?P<end>\d+)\)|'
r'(?P<width>\d+)(:?/(?P<llvm_width>\d+))?)'
r'|(?P<reference>\d+))(?P<index>\.\d+)?(?P<modifiers>[vShdnwusfDMC]*)(?P<force_width>x\d+)?'
r'|(?P<reference>\d+))(?P<index>\.\d+)?(?P<modifiers>[vShdnwusfDMCNW]*)(?P<force_width>x\d+)?'
r'(?:(?P<pointer>Pm|Pc)(?P<llvm_pointer>/.*)?|(?P<bitcast>->.*))?$'
)
@ -246,6 +246,12 @@ class Vector(Type):
return Vector(self._elem, self._length // 2)
elif spec == 'd':
return Vector(self._elem, self._length * 2)
elif spec == 'N':
elem = self._elem.__class__(self._elem.bitwidth() // 2)
return Vector(elem, self._length * 2)
elif spec == 'W':
elem = self._elem.__class__(self._elem.bitwidth() * 2)
return Vector(elem, self._length // 2)
elif spec.startswith('x'):
new_bitwidth = int(spec[1:])
return Vector(self._elem, new_bitwidth // self._elem.bitwidth())
@ -714,6 +720,8 @@ def parse_args():
- 'd': double the length of the vector (u32x2 -> u32x4)
- 'n': narrow the element of the vector (u32x4 -> u16x4)
- 'w': widen the element of the vector (u16x4 -> u32x4)
- 'N': half the length of the vector element (u32x4 -> u16x8)
- 'W': double the length of the vector element (u16x8 -> u32x4)
- 'u': force a number (vector or scalar) to be unsigned int (f32x4 -> u32x4)
- 's': force a number (vector or scalar) to be signed int (u32x4 -> i32x4)
- 'f': force a number (vector or scalar) to be float (u32x4 -> f32x4)