[shader_recompiler] Add IAbs64 to prevent errors when using I2F with a 64-bit packed CBUF variant (#2918)

- Using I2F cbuf variant (packed 32x2 aka. U64)
- Code will call IAbs() if some conditions are met (signed + abs bit)
- Uh oh we don't have a variant for 64 bits!
- Fuck now we just made BAD ir code :(

Signed-off-by: lizzie <lizzie@eden-emu.dev>

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/2918
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Reviewed-by: Caio Oliveira <caiooliveirafarias0@gmail.com>
Co-authored-by: lizzie <lizzie@eden-emu.dev>
Co-committed-by: lizzie <lizzie@eden-emu.dev>

1 files changed, 7 insertions, 0 deletions

diff --git a/src/shader_recompiler/backend/glasm/emit_glasm_integer.cpp b/src/shader_recompiler/backend/glasm/emit_glasm_integer.cpp
index 528240f44a..a347a3f5ff 100644
--- a/src/shader_recompiler/backend/glasm/emit_glasm_integer.cpp
+++ b/src/shader_recompiler/backend/glasm/emit_glasm_integer.cpp
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -113,6 +116,10 @@ void EmitIAbs32(EmitContext& ctx, IR::Inst& inst, ScalarS32 value) {
     ctx.Add("ABS.S {},{};", inst, value);
 }
 
+void EmitIAbs64(EmitContext& ctx, IR::Inst& inst, ScalarS32 value) {
+    ctx.Add("ABS.S64 {},{};", inst, value);
+}
+
 void EmitShiftLeftLogical32(EmitContext& ctx, IR::Inst& inst, ScalarU32 base, ScalarU32 shift) {
     ctx.Add("SHL.U {}.x,{},{};", inst, base, shift);
 }