diff options
Diffstat (limited to 'llvm/lib/Target/PowerPC/PPCInstrP10.td')
| -rw-r--r-- | llvm/lib/Target/PowerPC/PPCInstrP10.td | 116 |
1 files changed, 114 insertions, 2 deletions
diff --git a/llvm/lib/Target/PowerPC/PPCInstrP10.td b/llvm/lib/Target/PowerPC/PPCInstrP10.td index d295f35..1dc485d 100644 --- a/llvm/lib/Target/PowerPC/PPCInstrP10.td +++ b/llvm/lib/Target/PowerPC/PPCInstrP10.td @@ -2159,8 +2159,115 @@ let AddedComplexity = 400, Predicates = [IsISA3_1, HasVSX] in { (COPY_TO_REGCLASS $VRB, VSRC), 2)))>; } -class XXEvalPattern <dag pattern, bits<8> imm> : - Pat<(v4i32 pattern), (XXEVAL $vA, $vB, $vC, imm)> {} +// ============================================================================= +// XXEVAL Instruction Pattern Definitions +// ============================================================================= +// +// XXEVAL instruction performs 256 different logical operations on three vector +// operands using an 8-bit immediate value to select the operation. +// Format: xxeval XT, XA, XB, XC, IMM +// For example: +// Equivalent function A?xor(B,C):and(B,C) is performed by +// xxeval XT, XA, XB, XC, 22 +// +// REGISTER CLASS CONSTRAINTS: +// - XXEVAL natively supports: VSRC register class [v4i32, v4f32, v2f64, v2i64] +// - Other vector types [v16i8, v8i16] require COPY_TO_REGCLASS to/from VRRC +// ============================================================================= + +class XXEvalPattern<dag pattern, bits<8> imm> + : Pat<(v4i32 pattern), (XXEVAL $vA, $vB, $vC, imm)> {} + +class XXEvalPatterns<ValueType Vt, dag InputPattern, bits<8> Imm> + : Pat<(Vt InputPattern), + !if(!or(!eq(Vt, v4i32), !eq(Vt, v2i64)), + // VSRC path: direct XXEVAL for v4i32 and v2i64 + (XXEVAL $vA, $vB, $vC, Imm), + // VRRC path: wrap with COPY_TO_REGCLASS for other types + (COPY_TO_REGCLASS(XXEVAL(COPY_TO_REGCLASS Vt:$vA, VSRC), + (COPY_TO_REGCLASS Vt:$vB, VSRC), + (COPY_TO_REGCLASS Vt:$vC, VSRC), Imm), + VRRC))> {} + +// ============================================================================= +// PatFrags for Bitcast-Aware Vector bitwise Operations +// +// Each PatFrags defines TWO alternatives for pattern matcher to choose: +// - Direct operation (for v4i32) +// - Bitcast operation (for other types: v2i64, v16i8, v8i16) +// ============================================================================= + +// Basic Binary Operations +def VAnd + : PatFrags<(ops node:$a, node:$b), [(and node:$a, node:$b), + (bitconvert(and + (v4i32(bitconvert node:$a)), + (v4i32(bitconvert node:$b))))]>; + +def VXor + : PatFrags<(ops node:$a, node:$b), [(xor node:$a, node:$b), + (bitconvert(xor + (v4i32(bitconvert node:$a)), + (v4i32(bitconvert node:$b))))]>; + +def VOr : PatFrags<(ops node:$a, node:$b), [(or node:$a, node:$b), + (bitconvert(or + (v4i32(bitconvert node:$a)), + (v4i32(bitconvert node:$b))))]>; + +def VNot + : PatFrags<(ops node:$a), [(vnot node:$a), + (bitconvert(vnot(v4i32(bitconvert node:$a))))]>; + +// Derived bitwise operations +// Vector NOR operation (not(or)) +def VNor + : PatFrags<(ops node:$a, node:$b), [(vnot(or node:$a, node:$b)), + (bitconvert(vnot(or + (v4i32(bitconvert node:$a)), + (v4i32(bitconvert node:$b)))))]>; + +// Vector EQV operation (not(xor)) +def VEqv + : PatFrags<(ops node:$a, node:$b), [(vnot(xor node:$a, node:$b)), + (bitconvert(vnot(xor + (v4i32(bitconvert node:$a)), + (v4i32(bitconvert node:$b)))))]>; + +// ============================================================================= +// XXEVAL Ternary Pattern Multiclass: XXEvalTernarySelectAnd +// This class matches the equivalent Ternary Operation: A ? f(B,C) : AND(B,C) +// and emit the corresponding xxeval instruction with the imm value. +// +// The patterns implement xxeval vector select operations where: +// - A is the selector vector +// - f(B,C) is the "true" case op on vectors B and C (XOR, NOR, EQV, or NOT) +// - AND(B,C) is the "false" case op on vectors B and C +// ============================================================================= +multiclass XXEvalTernarySelectAnd<ValueType Vt> { + // Pattern: A ? XOR(B,C) : AND(B,C) XXEVAL immediate value: 22 + def : XXEvalPatterns< + Vt, (vselect Vt:$vA, (VXor Vt:$vB, Vt:$vC), (VAnd Vt:$vB, Vt:$vC)), + 22>; + + // Pattern: A ? NOR(B,C) : AND(B,C) XXEVAL immediate value: 24 + def : XXEvalPatterns< + Vt, (vselect Vt:$vA, (VNor Vt:$vB, Vt:$vC), (VAnd Vt:$vB, Vt:$vC)), + 24>; + + // Pattern: A ? EQV(B,C) : AND(B,C) XXEVAL immediate value: 25 + def : XXEvalPatterns< + Vt, (vselect Vt:$vA, (VEqv Vt:$vB, Vt:$vC), (VAnd Vt:$vB, Vt:$vC)), + 25>; + + // Pattern: A ? NOT(C) : AND(B,C) XXEVAL immediate value: 26 + def : XXEvalPatterns< + Vt, (vselect Vt:$vA, (VNot Vt:$vC), (VAnd Vt:$vB, Vt:$vC)), 26>; + + // Pattern: A ? NOT(B) : AND(B,C) XXEVAL immediate value: 28 + def : XXEvalPatterns< + Vt, (vselect Vt:$vA, (VNot Vt:$vB), (VAnd Vt:$vB, Vt:$vC)), 28>; +} let Predicates = [PrefixInstrs, HasP10Vector] in { let AddedComplexity = 400 in { @@ -2270,6 +2377,11 @@ let Predicates = [PrefixInstrs, HasP10Vector] in { // (xor A, (or B, C)) def : XXEvalPattern<(xor v4i32:$vA, (or v4i32:$vB, v4i32:$vC)), 120>; + // XXEval Patterns for ternary Operations. + foreach Ty = [v4i32, v2i64, v8i16, v16i8] in { + defm : XXEvalTernarySelectAnd<Ty>; + } + // Anonymous patterns to select prefixed VSX loads and stores. // Load / Store f128 def : Pat<(f128 (load PDForm:$src)), |