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nv50/ir: Handle OP_CVT when folding constant expressions 

[imirkin: handle more type combinations, use macro]
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
This commit is contained in:
Tobias Klausmann 2015-01-11 22:40:22 +01:00 committed by Ilia Mirkin
parent f5b926183d
commit 3e6adbd761
1 changed files with 78 additions and 0 deletions
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78
src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp
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@ -1132,6 +1132,84 @@ ConstantFolding::opnd(Instruction *i, ImmediateValue &imm0, int s)
i->op = OP_MOV;
break;
}
case OP_CVT: {
Storage res;
// TODO: handle 64-bit values properly
if (typeSizeof(i->dType) == 8 || typeSizeof(i->sType) == 8)
return;
// TODO: handle single byte/word extractions
if (i->subOp)
return;
bld.setPosition(i, true); /* make sure bld is init'ed */
#define CASE(type, dst, fmin, fmax, imin, imax, umin, umax) \
case type: \
switch (i->sType) { \
case TYPE_F32: \
res.data.dst = util_iround(i->saturate ? \
CLAMP(imm0.reg.data.f32, fmin, fmax) : \
imm0.reg.data.f32); \
break; \
case TYPE_S32: \
res.data.dst = i->saturate ? \
CLAMP(imm0.reg.data.s32, imin, imax) : \
imm0.reg.data.s32; \
break; \
case TYPE_U32: \
res.data.dst = i->saturate ? \
CLAMP(imm0.reg.data.u32, umin, umax) : \
imm0.reg.data.u32; \
break; \
case TYPE_S16: \
res.data.dst = i->saturate ? \
CLAMP(imm0.reg.data.s16, imin, imax) : \
imm0.reg.data.s16; \
break; \
case TYPE_U16: \
res.data.dst = i->saturate ? \
CLAMP(imm0.reg.data.u16, umin, umax) : \
imm0.reg.data.u16; \
break; \
default: return; \
} \
i->setSrc(0, bld.mkImm(res.data.dst)); \
break
switch(i->dType) {
CASE(TYPE_U16, u16, 0, UINT16_MAX, 0, UINT16_MAX, 0, UINT16_MAX);
CASE(TYPE_S16, s16, INT16_MIN, INT16_MAX, INT16_MIN, INT16_MAX, 0, INT16_MAX);
CASE(TYPE_U32, u32, 0, UINT32_MAX, 0, INT32_MAX, 0, UINT32_MAX);
CASE(TYPE_S32, s32, INT32_MIN, INT32_MAX, INT32_MIN, INT32_MAX, 0, INT32_MAX);
case TYPE_F32:
switch (i->sType) {
case TYPE_F32:
res.data.f32 = i->saturate ?
CLAMP(imm0.reg.data.f32, 0.0f, 1.0f) :
imm0.reg.data.f32;
break;
case TYPE_U16: res.data.f32 = (float) imm0.reg.data.u16; break;
case TYPE_U32: res.data.f32 = (float) imm0.reg.data.u32; break;
case TYPE_S16: res.data.f32 = (float) imm0.reg.data.s16; break;
case TYPE_S32: res.data.f32 = (float) imm0.reg.data.s32; break;
default:
return;
}
i->setSrc(0, bld.mkImm(res.data.f32));
break;
default:
return;
}
#undef CASE
i->setType(i->dType); /* Remove i->sType, which we don't need anymore */
i->op = OP_MOV;
i->saturate = 0;
i->src(0).mod = Modifier(0); /* Clear the already applied modifier */
break;
}
default:
return;
}