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ryujinx-fork/ARMeilleure/CodeGen/X86/X86Condition.cs
Ficture Seven ee22517d92
Improve branch operations (#1442)
* Add Compare instruction

* Add BranchIf instruction

* Use test when BranchIf & Compare against 0

* Propagate Compare into BranchIfTrue/False use

- Propagate Compare operations into their BranchIfTrue/False use and
  turn these into a BranchIf.

- Clean up Comparison enum.

* Replace BranchIfTrue/False with BranchIf

* Use BranchIf in EmitPtPointerLoad

- Using BranchIf early instead of BranchIfTrue/False improves LCQ and
  reduces the amount of work needed by the Optimizer.

  EmitPtPointerLoader was a/the big producer of BranchIfTrue/False.

- Fix asserts firing when assembling BitwiseAnd because of type
  mismatch in EmitStoreExclusive. This is harmless and should not
  cause any diffs.

* Increment PPTC interval version

* Improve IRDumper for BranchIf & Compare

* Use BranchIf in EmitNativeCall

* Clean up

* Do not emit test when immediately preceded by and
2020-08-05 08:52:33 +10:00

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1.6 KiB
C#

using ARMeilleure.IntermediateRepresentation;
using System;
namespace ARMeilleure.CodeGen.X86
{
enum X86Condition
{
Overflow = 0x0,
NotOverflow = 0x1,
Below = 0x2,
AboveOrEqual = 0x3,
Equal = 0x4,
NotEqual = 0x5,
BelowOrEqual = 0x6,
Above = 0x7,
Sign = 0x8,
NotSign = 0x9,
ParityEven = 0xa,
ParityOdd = 0xb,
Less = 0xc,
GreaterOrEqual = 0xd,
LessOrEqual = 0xe,
Greater = 0xf
}
static class ComparisonX86Extensions
{
public static X86Condition ToX86Condition(this Comparison comp)
{
return comp switch
{
Comparison.Equal => X86Condition.Equal,
Comparison.NotEqual => X86Condition.NotEqual,
Comparison.Greater => X86Condition.Greater,
Comparison.LessOrEqual => X86Condition.LessOrEqual,
Comparison.GreaterUI => X86Condition.Above,
Comparison.LessOrEqualUI => X86Condition.BelowOrEqual,
Comparison.GreaterOrEqual => X86Condition.GreaterOrEqual,
Comparison.Less => X86Condition.Less,
Comparison.GreaterOrEqualUI => X86Condition.AboveOrEqual,
Comparison.LessUI => X86Condition.Below,
_ => throw new ArgumentException(null, nameof(comp))
};
}
}
}