shader_recompiler: Use FPRecip in FSWZADD implementation

Simplifies the negative reciprocal calculation in FSWZADD by using the
dedicated FPRecip operation instead of manually constructing a division.
This change:

- Replaces FPDiv(Imm32(f32(1.0f)), src_b) with FPRecip(src_b)
- Results in more efficient code for calculating 1.0/x
- Fixes build errors from undefined IR emitter methods

1 files changed, 1 insertions, 1 deletions

diff --git a/src/shader_recompiler/frontend/maxwell/translate/impl/floating_point_swizzled_add.cpp b/src/shader_recompiler/frontend/maxwell/translate/impl/floating_point_swizzled_add.cpp
index cb8971551..c89d53ea3 100644
--- a/src/shader_recompiler/frontend/maxwell/translate/impl/floating_point_swizzled_add.cpp
+++ b/src/shader_recompiler/frontend/maxwell/translate/impl/floating_point_swizzled_add.cpp
@@ -34,7 +34,7 @@ void TranslatorVisitor::FSWZADD(u64 insn) {
 
     IR::F32 result;
     if (fswzadd.ndv != 0) {
-        const IR::F32 neg_recip = ir.FPNeg(ir.FPDiv(ir.Imm32(ir.f32(1.0f)), src_b));
+        const IR::F32 neg_recip = ir.FPNeg(ir.FPRecip(src_b));
         result = ir.FSwizzleAdd(src_a, neg_recip, swizzle, fp_control);
     } else {
         result = ir.FSwizzleAdd(src_a, src_b, swizzle, fp_control);