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| author | Samuel Pitoiset <samuel.pitoiset@gmail.com> | 2016-09-14 16:42:45 +0200 |
|---|---|---|
| committer | Samuel Pitoiset <samuel.pitoiset@gmail.com> | 2016-09-29 21:20:30 +0200 |
| commit | 85132c7453230960f34cfe7b7b7fcaaab158d79f (patch) | |
| tree | 875384da56aa9026285da6d7a20bb8d99c38e195 /src/gallium/drivers/nouveau/codegen/nv50_ir_target_nvc0.cpp | |
| parent | 652874754a0afd0aefa16dd65afcf85842885945 (diff) | |
| download | external_mesa3d-85132c7453230960f34cfe7b7b7fcaaab158d79f.zip external_mesa3d-85132c7453230960f34cfe7b7b7fcaaab158d79f.tar.gz external_mesa3d-85132c7453230960f34cfe7b7b7fcaaab158d79f.tar.bz2 | |
nv50/ir: add preliminary support for SHLADD
This instruction is available since SM20 (Fermi) and allow to do
(a << b) + c in one shot. In some situations, IMAD should be
replaced by SHLADD when b is a power of 2, and ADD+SHL should be
replaced by SHLADD as well.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
Diffstat (limited to 'src/gallium/drivers/nouveau/codegen/nv50_ir_target_nvc0.cpp')
| -rw-r--r-- | src/gallium/drivers/nouveau/codegen/nv50_ir_target_nvc0.cpp | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_target_nvc0.cpp b/src/gallium/drivers/nouveau/codegen/nv50_ir_target_nvc0.cpp index f75e395..8606065 100644 --- a/src/gallium/drivers/nouveau/codegen/nv50_ir_target_nvc0.cpp +++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_target_nvc0.cpp @@ -105,6 +105,7 @@ static const struct opProperties _initProps[] = { OP_MAX, 0x3, 0x3, 0x0, 0x0, 0x2, 0x2 }, { OP_MIN, 0x3, 0x3, 0x0, 0x0, 0x2, 0x2 }, { OP_MAD, 0x7, 0x0, 0x0, 0x8, 0x6, 0x2 | 0x8 }, // special c[] constraint + { OP_SHLADD, 0x5, 0x0, 0x0, 0x0, 0x4, 0x6 }, { OP_MADSP, 0x0, 0x0, 0x0, 0x0, 0x6, 0x2 }, { OP_ABS, 0x0, 0x0, 0x0, 0x0, 0x1, 0x0 }, { OP_NEG, 0x0, 0x1, 0x0, 0x0, 0x1, 0x0 }, @@ -158,13 +159,13 @@ void TargetNVC0::initOpInfo() { // ADD, MUL, MAD, FMA, AND, OR, XOR, MAX, MIN, SET_AND, SET_OR, SET_XOR, // SET, SELP, SLCT - 0x0670ca00, 0x0000003f, 0x00000000, 0x00000000 + 0x0ce0ca00, 0x0000007e, 0x00000000, 0x00000000 }; static const uint32_t shortForm[(OP_LAST + 31) / 32] = { // ADD, MUL, MAD, FMA, AND, OR, XOR, MAX, MIN - 0x0670ca00, 0x00000000, 0x00000000, 0x00000000 + 0x0ce0ca00, 0x00000000, 0x00000000, 0x00000000 }; static const operation noDest[] = @@ -451,6 +452,12 @@ TargetNVC0::isModSupported(const Instruction *insn, int s, Modifier mod) const if (s == 0) return insn->src(1).mod.neg() ? false : true; break; + case OP_SHLADD: + if (s == 1) + return false; + if (insn->src(s ? 0 : 2).mod.neg()) + return false; + break; default: return false; } |