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| author | FICTURE7 <FICTURE7@gmail.com> | 2020-09-01 03:55:15 +0400 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2020-08-31 20:55:15 -0300 |
| commit | 92f7f163ef0ad3d7a542460a5500074188a9d8b1 (patch) | |
| tree | af8ffef472615946d3041263ed6d85568bc971f3 /ARMeilleure/Instructions/InstEmitMemoryHelper.cs | |
| parent | 2cb8bd7006e6e22798a6e44881f3e03d2fe637c5 (diff) | |
Improve static branch prediction along fast path for memory accesses (#1484)
* Improve static branch prediction along fast path for memory accesses
* Set PPTC interval version
Diffstat (limited to 'ARMeilleure/Instructions/InstEmitMemoryHelper.cs')
| -rw-r--r-- | ARMeilleure/Instructions/InstEmitMemoryHelper.cs | 86 |
1 files changed, 37 insertions, 49 deletions
diff --git a/ARMeilleure/Instructions/InstEmitMemoryHelper.cs b/ARMeilleure/Instructions/InstEmitMemoryHelper.cs index 9b6476dd..91227bc5 100644 --- a/ARMeilleure/Instructions/InstEmitMemoryHelper.cs +++ b/ARMeilleure/Instructions/InstEmitMemoryHelper.cs @@ -124,21 +124,12 @@ namespace ARMeilleure.Instructions private static void EmitReadInt(ArmEmitterContext context, Operand address, int rt, int size) { - Operand isUnalignedAddr = EmitAddressCheck(context, address, size); - - Operand lblFastPath = Label(); Operand lblSlowPath = Label(); Operand lblEnd = Label(); - context.BranchIfFalse(lblFastPath, isUnalignedAddr); - - context.MarkLabel(lblSlowPath); - - EmitReadIntFallback(context, address, rt, size); - - context.Branch(lblEnd); + Operand isUnalignedAddr = EmitAddressCheck(context, address, size); - context.MarkLabel(lblFastPath); + context.BranchIfTrue(lblSlowPath, isUnalignedAddr); Operand physAddr = EmitPtPointerLoad(context, address, lblSlowPath, write: false); @@ -154,6 +145,12 @@ namespace ARMeilleure.Instructions SetInt(context, rt, value); + context.Branch(lblEnd); + + context.MarkLabel(lblSlowPath); + + EmitReadIntFallback(context, address, rt, size); + context.MarkLabel(lblEnd); } @@ -195,21 +192,12 @@ namespace ARMeilleure.Instructions int elem, int size) { - Operand isUnalignedAddr = EmitAddressCheck(context, address, size); - - Operand lblFastPath = Label(); Operand lblSlowPath = Label(); Operand lblEnd = Label(); - context.BranchIfFalse(lblFastPath, isUnalignedAddr); - - context.MarkLabel(lblSlowPath); - - EmitReadVectorFallback(context, address, vector, rt, elem, size); - - context.Branch(lblEnd); + Operand isUnalignedAddr = EmitAddressCheck(context, address, size); - context.MarkLabel(lblFastPath); + context.BranchIfTrue(lblSlowPath, isUnalignedAddr); Operand physAddr = EmitPtPointerLoad(context, address, lblSlowPath, write: false); @@ -226,6 +214,12 @@ namespace ARMeilleure.Instructions context.Copy(GetVec(rt), value); + context.Branch(lblEnd); + + context.MarkLabel(lblSlowPath); + + EmitReadVectorFallback(context, address, vector, rt, elem, size); + context.MarkLabel(lblEnd); } @@ -236,21 +230,12 @@ namespace ARMeilleure.Instructions private static void EmitWriteInt(ArmEmitterContext context, Operand address, int rt, int size) { - Operand isUnalignedAddr = EmitAddressCheck(context, address, size); - - Operand lblFastPath = Label(); Operand lblSlowPath = Label(); Operand lblEnd = Label(); - context.BranchIfFalse(lblFastPath, isUnalignedAddr); - - context.MarkLabel(lblSlowPath); - - EmitWriteIntFallback(context, address, rt, size); - - context.Branch(lblEnd); + Operand isUnalignedAddr = EmitAddressCheck(context, address, size); - context.MarkLabel(lblFastPath); + context.BranchIfTrue(lblSlowPath, isUnalignedAddr); Operand physAddr = EmitPtPointerLoad(context, address, lblSlowPath, write: true); @@ -269,6 +254,12 @@ namespace ARMeilleure.Instructions case 3: context.Store (physAddr, value); break; } + context.Branch(lblEnd); + + context.MarkLabel(lblSlowPath); + + EmitWriteIntFallback(context, address, rt, size); + context.MarkLabel(lblEnd); } @@ -318,21 +309,12 @@ namespace ARMeilleure.Instructions int elem, int size) { - Operand isUnalignedAddr = EmitAddressCheck(context, address, size); - - Operand lblFastPath = Label(); Operand lblSlowPath = Label(); Operand lblEnd = Label(); - context.BranchIfFalse(lblFastPath, isUnalignedAddr); - - context.MarkLabel(lblSlowPath); - - EmitWriteVectorFallback(context, address, rt, elem, size); - - context.Branch(lblEnd); + Operand isUnalignedAddr = EmitAddressCheck(context, address, size); - context.MarkLabel(lblFastPath); + context.BranchIfTrue(lblSlowPath, isUnalignedAddr); Operand physAddr = EmitPtPointerLoad(context, address, lblSlowPath, write: true); @@ -340,13 +322,19 @@ namespace ARMeilleure.Instructions switch (size) { - case 0: context.Store8 (physAddr, context.VectorExtract8(value, elem)); break; - case 1: context.Store16(physAddr, context.VectorExtract16(value, elem)); break; - case 2: context.Store (physAddr, context.VectorExtract(OperandType.FP32, value, elem)); break; - case 3: context.Store (physAddr, context.VectorExtract(OperandType.FP64, value, elem)); break; - case 4: context.Store (physAddr, value); break; + case 0: context.Store8 (physAddr, context.VectorExtract8(value, elem)); break; + case 1: context.Store16(physAddr, context.VectorExtract16(value, elem)); break; + case 2: context.Store (physAddr, context.VectorExtract(OperandType.I32, value, elem)); break; + case 3: context.Store (physAddr, context.VectorExtract(OperandType.I64, value, elem)); break; + case 4: context.Store (physAddr, value); break; } + context.Branch(lblEnd); + + context.MarkLabel(lblSlowPath); + + EmitWriteVectorFallback(context, address, rt, elem, size); + context.MarkLabel(lblEnd); } |