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[RISC-V] Put scalar stack args with sign extension #97662

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merged 2 commits into from
Jan 30, 2024
Merged

[RISC-V] Put scalar stack args with sign extension #97662

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1980be3
[RISC-V] Put scalar stack args with sign extension
t-mustafin Jan 29, 2024
7c32be3
Formatting patch
t-mustafin Jan 29, 2024
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8 changes: 8 additions & 0 deletions src/coreclr/jit/codegenriscv64.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -5048,6 +5048,14 @@ void CodeGen::genPutArgStk(GenTreePutArgStk* treeNode)
instruction storeIns = ins_Store(slotType);
emitAttr storeAttr = emitTypeSize(slotType);

// When passed in registers or on the stack, integer scalars narrower than XLEN bits
// are widened according to the sign of their type up to 32 bits, then sign-extended to XLEN bits.
if (EA_SIZE(storeAttr) < EA_PTRSIZE && varTypeUsesIntReg(slotType))
{
storeAttr = EA_PTRSIZE;
storeIns = INS_sd;
}

// If it is contained then source must be the integer constant zero
if (source->isContained())
{
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