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emit_x64_floating_point: Implement accurate fallback for FPMulAdd{32,64}

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MerryMage
2018-07-23 16:23:05 +01:00
parent e199887fbc
commit 0ce11b7b15
3 changed files with 56 additions and 14 deletions
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4
tests/A64/fuzz_with_unicorn.cpp
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@@ -77,8 +77,6 @@ static u32 GenRandomInst(u64 pc, bool is_last_inst) {
"LDLAR",
// Dynarmic and QEMU currently differ on how the exclusive monitor's address range works.
"STXR", "STLXR", "STXP", "STLXP", "LDXR", "LDAXR", "LDXP", "LDAXP",
// Approximation. Produces inaccurate results.
"FMADD_float", "FMSUB_float", "FNMADD_float", "FNMSUB_float",
};
for (const auto& [fn, bitstring] : list) {
@@ -116,8 +114,6 @@ static u32 GenFloatInst(u64 pc, bool is_last_inst) {
const std::vector<std::string> do_not_test {
// QEMU's implementation of FCVT is incorrect
"FCVT_float",
// Approximation. Produces incorrect results.
"FMADD_float", "FMSUB_float", "FNMADD_float", "FNMSUB_float",
// Requires investigation (temporarily disabled).
"FDIV_1", "FDIV_2",
};