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Use bitwise operations for fabs/fnabs/fneg.

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Skyth 2024-09-23 17:25:11 +03:00
parent 989ed13d04
commit 7f43723ff0
1 changed files with 3 additions and 3 deletions
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6
PowerRecomp/recompiler.cpp
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@ -408,7 +408,7 @@ bool Recompiler::Recompile(const Function& fn, uint32_t base, const ppc_insn& in
case PPC_INST_FABS: case PPC_INST_FABS:
println("\tctx.fpscr.setFlushMode(false);"); println("\tctx.fpscr.setFlushMode(false);");
println("\tctx.f{}.f64 = fabs(ctx.f{}.f64);", insn.operands[0], insn.operands[1]); println("\tctx.f{}.u64 = ctx.f{}.u64 & ~0x8000000000000000;", insn.operands[0], insn.operands[1]);
break; break;
case PPC_INST_FADD: case PPC_INST_FADD:
@ -493,12 +493,12 @@ bool Recompiler::Recompile(const Function& fn, uint32_t base, const ppc_insn& in
case PPC_INST_FNABS: case PPC_INST_FNABS:
println("\tctx.fpscr.setFlushMode(false);"); println("\tctx.fpscr.setFlushMode(false);");
println("\tctx.f{}.f64 = -fabs(ctx.f{}.f64);", insn.operands[0], insn.operands[1]); println("\tctx.f{}.u64 = ctx.f{}.u64 | 0x8000000000000000;", insn.operands[0], insn.operands[1]);
break; break;
case PPC_INST_FNEG: case PPC_INST_FNEG:
println("\tctx.fpscr.setFlushMode(false);"); println("\tctx.fpscr.setFlushMode(false);");
println("\tctx.f{}.f64 = -ctx.f{}.f64;", insn.operands[0], insn.operands[1]); println("\tctx.f{}.u64 = ctx.f{}.u64 ^ 0x8000000000000000;", insn.operands[0], insn.operands[1]);
break; break;
case PPC_INST_FNMADDS: case PPC_INST_FNMADDS: