[CPU/X64] Preserve NaN bit during float->double, double->float conversion

Probably this should be moved to ppc_emit_memory level instead of being x86-64 specific Was AI used in this change: Yes
2026-06-17 12:35:26 +02:00
parent 9781a75a22
commit 9588ce244d
3 changed files with 42 additions and 2 deletions
--- a/src/xenia/cpu/backend/x64/x64_emitter.cc
+++ b/src/xenia/cpu/backend/x64/x64_emitter.cc
@@ -1113,6 +1113,8 @@ static const vec128_t xmm_consts[] = {
    /* XMMInt127              */ vec128i(0x7Fu),
    /* XMM2To32               */ vec128f(0x1.0p32f),
    /* XMMFloatInf */ vec128i(0x7f800000),
+    /* XMMDoubleInf */
+    vec128i(0x00000000u, 0x7FF00000u, 0x00000000u, 0x7FF00000u),

    /* XMMIntsToBytes*/
    v128_setr_bytes(0, 4, 8, 12, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,