Revert "[JIT] ARM64 - Temporary fix for ldp/stp optimizations (#9…

…0534)" (#90699) This reverts commit 99a60c6.
dotnet · Aug 16, 2023 · ac3246b · ac3246b
1 parent 1b7263e
commit ac3246b
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diff --git a/src/coreclr/jit/emitarm64.cpp b/src/coreclr/jit/emitarm64.cpp
@@ -16615,15 +16615,6 @@ emitter::RegisterOrder emitter::IsOptimizableLdrStrWithPair(
     emitAttr  prevSize   = emitLastIns->idOpSize();
     ssize_t   prevImm    = emitGetInsSC(emitLastIns);
 
-    // If we have this format, the 'imm' and/or 'prevImm' are not scaled(encoded),
-    // therefore we cannot proceed.
-    // TODO: In this context, 'imm' and 'prevImm' are assumed to be scaled(encoded).
-    //       They should never be scaled(encoded) until its about to be written to the buffer.
-    if (fmt == IF_LS_2C || lastInsFmt == IF_LS_2C)
-    {
-        return eRO_none;
-    }
-
     // Signed, *raw* immediate value fits in 7 bits, so for LDP/ STP the raw value is from -64 to +63.
     // For LDR/ STR, there are 9 bits, so we need to limit the range explicitly in software.
     if ((imm < -64) || (imm > 63) || (prevImm < -64) || (prevImm > 63))

diff --git a/src/tests/JIT/Regression/JitBlue/Runtime_85765/Runtime_85765.cs b/src/tests/JIT/Regression/JitBlue/Runtime_85765/Runtime_85765.cs
diff --git a/src/tests/JIT/Regression/JitBlue/Runtime_85765/Runtime_85765.csproj b/src/tests/JIT/Regression/JitBlue/Runtime_85765/Runtime_85765.csproj