Suyu/dynarmic
1
0
Fork 0
mirror of https://git.suyu.dev/suyu/dynarmic.git synced 2026-01-07 15:08:22 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions

emit_x64_vector_floating_point: Correct FMA in FTZ mode

Browse source 
x64 rounds before flushing to zero
AArch64 rounds after flushing to zero

This difference of behaviour is noticable if something would round to a smallest normalized number
This commit is contained in:
MerryMage 2018-07-31 18:12:39 +01:00
parent 8ef195db3c
commit bb93353f94
3 changed files with 130 additions and 92 deletions
Download patch file Download diff file Expand all files Collapse all files

19
tests/A64/a64.cpp
View file

@ -409,3 +409,22 @@ TEST_CASE("A64: FMLA.4S (denormal)", "[a64]") {
REQUIRE(jit.GetVector(12) == Vector{0x7ff800007fc00000, 0xbff0000068e8e581});
}
TEST_CASE("A64: FMLA.4S (0x80800000)", "[a64]") {
TestEnv env;
Dynarmic::A64::Jit jit{Dynarmic::A64::UserConfig{&env}};
env.code_mem[0] = 0x4e38cc2b; // FMLA.4S V11, V1, V24
env.code_mem[1] = 0x14000000; // B .
jit.SetPC(0);
jit.SetVector(11, {0xc79b271efff05678, 0xffc0000080800000});
jit.SetVector(1, {0x00636d2400800000, 0x0966320bb26bddee});
jit.SetVector(24, {0x460e8c84fff00000, 0x8ba98d2780800002});
jit.SetFpcr(0x03000000);
env.ticks_left = 2;
jit.Run();
REQUIRE(jit.GetVector(11) == Vector{0xc79b271e7fc00000, 0x7fc0000080000000});
}