search for: util_last_bit_sign

Displaying 5 results from an estimated 5 matches for "util_last_bit_sign".

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[PATCH 4/4] nvc0/ir: Handle OP_BFIND when folding constant expressions
2014 May 29
1
[PATCH 4/4] nvc0/ir: Handle OP_BFIND when folding constant expressions
...56,20 @@ ConstantFolding::expr(Instruction *i, } break; } + case OP_BFIND: { + int shift = 0; + if (i->subOp == NV50_IR_SUBOP_BFIND_SAMT) + shift = 32 - (b->data.u32 & 0xff); + switch (i->dType) { + case TYPE_S32: + res.data.s32 = util_last_bit_signed(a->data.s32 >> shift)- 1; break; + case TYPE_U32: + res.data.u32 = util_last_bit(a->data.u32 >> shift) -1; break; + default: + return; + } + break; + } default: return; } -- 1.8.4.5
[PATCH v2 0/4] Constant folding of new Instructions
2014 Jun 03
8
[PATCH v2 0/4] Constant folding of new Instructions
And another try for constant folding of Instructions for nvc0. Please Review this! Thanks, Tobias Klausmann Tobias Klausmann (4): nvc0/ir: clear subop when folding constant expressions nvc0/ir: Handle reverse subop for OP_EXTBF when folding constant expressions nvc0/ir: Handle OP_BFIND when folding constant expressions nvc0/ir: Handle OP_POPCNT when folding constant expressions
[PATCH v2 3/4] nvc0/ir: Handle OP_BFIND when folding constant expressions
2014 Jun 03
0
[PATCH v2 3/4] nvc0/ir: Handle OP_BFIND when folding constant expressions
...drivers/nouveau/codegen/nv50_ir_peephole.cpp @@ -948,6 +948,24 @@ ConstantFolding::opnd(Instruction *i, ImmediateValue &imm0, int s) case OP_EX2: unary(i, imm0); break; + case OP_BFIND: { + int32_t res; + switch (i->dType) { + case TYPE_S32: + res = util_last_bit_signed(imm0.reg.data.s32) - 1; break; + case TYPE_U32: + res = util_last_bit(imm0.reg.data.u32) -1; break; + default: + return; + } + if ((i->subOp == NV50_IR_SUBOP_BFIND_SAMT) && (res >= 0)) + res = 31 - res; + i->setSrc(0, new_Immediat...
Add constant folding for new opcodes
2014 May 29
4
Add constant folding for new opcodes
Hi, please review the following 4 patches: 1b1cfc6 nvc0/ir: Handle OP_BFIND when folding constant expressions d2d2727 nvc0/ir: Handle OP_POPCNT when folding constant expressions 86a1ee6 nvc0/ir: Handle reverse subop for OP_EXTBF when folding constant expressions 84563bf nvc0/ir: clear subop when folding constant expressions src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp | 39
[PATCH v3 0/4] Constant folding of new Instructions
2014 Jun 03
6
[PATCH v3 0/4] Constant folding of new Instructions
Yet another try for constant folding of Instructions for nvc0. Please Review this again! (Hopefully the last time ;-) ) Tobias Klausmann (4): nvc0/ir: clear subop when folding constant expressions nvc0/ir: Handle reverse subop for OP_EXTBF when folding constant expressions nvc0/ir: Handle OP_BFIND when folding constant expressions nvc0/ir: Handle OP_POPCNT when folding constant