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nv50/ir/tgsi: optimize KIL

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Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: "10.2" <mesa-stable@lists.freedesktop.org>
(cherry picked from commit d479713d25)
This commit is contained in:
Christoph Bumiller 2013-06-12 21:31:19 +02:00 • committed by Ian Romanick
parent 9ea859931e
commit 7efdc55f5f
1 changed files with 5 additions and 0 deletions
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5
src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp
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@ -2457,7 +2457,12 @@ Converter::handleInstruction(const struct tgsi_full_instruction *insn)
break;
case TGSI_OPCODE_KILL_IF:
val0 = new_LValue(func, FILE_PREDICATE);
mask = 0;
for (c = 0; c < 4; ++c) {
const int s = tgsi.getSrc(0).getSwizzle(c);
if (mask & (1 << s))
continue;
mask |= 1 << s;
mkCmp(OP_SET, CC_LT, TYPE_F32, val0, TYPE_F32, fetchSrc(0, c), zero);
mkOp(OP_DISCARD, TYPE_NONE, NULL)->setPredicate(CC_P, val0);
}