87 lines
2.2 KiB
Go
87 lines
2.2 KiB
Go
// Copyright (c) 2026 Petr Balvín <opensource@petrbalvin.org> (https://petrbalvin.org)
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// SPDX-License-Identifier: BSD-3-Clause
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package asm
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import "testing"
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// TestRISCVQuadFP_golden pins the quad-precision ("Q") family on golden
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// vectors from the specification. The Go toolchain's object table carries
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// the encodings but its assembler accepts no Q mnemonic, so no oracle run
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// is possible: the words below follow the Q extension's encoding table with
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// the Plan 9 operand order the other widths use (first operand in rs2, the
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// bare float-to-integer conversions carrying the RTZ rounding mode).
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func TestRISCVQuadFP_golden(t *testing.T) {
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fn := firstTextRISCV(t, `#include "textflag.h"
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TEXT ·q(SB), NOSPLIT, $0
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FLQ 8(X5), F3
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FSQ F3, 8(X5)
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FADDQ F1, F2, F3
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FSUBQ F1, F2, F3
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FMULQ F1, F2, F3
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FDIVQ F1, F2, F3
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FSQRTQ F2, F1
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FMINQ F1, F2, F3
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FMAXQ F1, F2, F3
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FEQQ F3, F2, X5
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FLTQ F3, F2, X5
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FLEQ F3, F2, X5
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FSGNJQ F1, F2, F3
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FSGNJNQ F1, F2, F3
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FSGNJXQ F1, F2, F3
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FMADDQ F1, F2, F3, F4
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FMSUBQ F1, F2, F3, F4
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FNMSUBQ F1, F2, F3, F4
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FNMADDQ F1, F2, F3, F4
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FCVTSQ F5, F2
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FCVTDQ F5, F2
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FCVTQS F2, F5
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FCVTQD F2, F5
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FCVTWQ F2, X5
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FCVTWUQ F2, X5
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FCVTLQ F2, X5
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FCVTLUQ F2, X5
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FCVTQW X5, F2
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FCVTQWU X5, F2
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FCVTQL X5, F2
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FCVTQLU X5, F2
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FCLASSQ F2, X5
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RET
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`)
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code := assembleRISCVHelper(t, fn)
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riscvWants(t, code,
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0x0082C187, // flq f3, 8(x5)
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0x0032C427, // fsq f3, 8(x5)
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0x061101D3, // fadd.q f3, f2, f1
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0x0E1101D3, // fsub.q
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0x161101D3, // fmul.q
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0x1E1101D3, // fdiv.q
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0x5E0100D3, // fsqrt.q f1, f2
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0x2E1101D3, // fmin.q f3, f2, f1
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0x2E1111D3, // fmax.q
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0xA63122D3, // feq.q x5, f2, f3
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0xA63112D3, // flt.q
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0xA63102D3, // fle.q
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0x261101D3, // fsgnj.q
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0x261111D3, // fsgnjn.q
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0x261121D3, // fsgnjx.q
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0x1E208243, // fmadd.q f4, f1, f2, f3
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0x1E208247, // fmsub.q
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0x1E20824B, // fnmsub.q
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0x1E20824F, // fnmadd.q
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0x40328153, // fcvt.s.q f2, f5
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0x42328153, // fcvt.d.q f2, f5
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0x460102D3, // fcvt.q.s f5, f2
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0x461102D3, // fcvt.q.d f5, f2
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0xC60112D3, // fcvt.w.q x5, f2
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0xC61112D3, // fcvt.wu.q
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0xC62112D3, // fcvt.l.q
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0xC63112D3, // fcvt.lu.q
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0xD6028153, // fcvt.q.w f2, x5
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0xD6128153, // fcvt.q.wu
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0xD6228153, // fcvt.q.l
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0xD6328153, // fcvt.q.lu
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0xE60112D3, // fclass.q x5, f2
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)
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}
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