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
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12 changed files with 311 additions and 145 deletions
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@ -403,7 +403,7 @@ namespace ARMeilleure.Instructions
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if (lblSlowPath != null)
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{
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context.BranchIfTrue(lblSlowPath, context.ICompareLessOrEqual(pte, Const(0L)));
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context.BranchIf(lblSlowPath, pte, Const(0L), Comparison.LessOrEqual);
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}
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else
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{
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@ -414,7 +414,7 @@ namespace ARMeilleure.Instructions
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Operand lblNotWatched = Label();
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// Is the page currently being monitored for modifications? If so we need to call MarkRegionAsModified.
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context.BranchIfTrue(lblNotWatched, context.ICompareGreaterOrEqual(pte, Const(0L)));
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context.BranchIf(lblNotWatched, pte, Const(0L), Comparison.GreaterOrEqual);
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// Mark the region as modified. Size here doesn't matter as address is assumed to be size aligned here.
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context.Call(typeof(NativeInterface).GetMethod(nameof(NativeInterface.MarkRegionAsModified)), address, Const(1UL));
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