[llvm] 2dc16fb - [RISCV] Duplicate pseudo expansion comment to RISCVMCCodeEmitter

[Jessica Clarke via llvm-commits]

Author: Jessica Clarke
Date: 2020-07-15T10:52:42+01:00
New Revision: 2dc16fbdf0f24b0b9fd529932e7ee0d1960fc8b0

URL: https://github.com/llvm/llvm-project/commit/2dc16fbdf0f24b0b9fd529932e7ee0d1960fc8b0
DIFF: https://github.com/llvm/llvm-project/commit/2dc16fbdf0f24b0b9fd529932e7ee0d1960fc8b0.diff

LOG: [RISCV] Duplicate pseudo expansion comment to RISCVMCCodeEmitter

Follow-on from D77443. Although we're not fixing any of these
pseudo-instructions, the potential for them to be out of sync still
exists.

Added: 
    

Modified: 
    llvm/lib/Target/RISCV/MCTargetDesc/RISCVMCCodeEmitter.cpp

Removed: 
    


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diff  --git a/llvm/lib/Target/RISCV/MCTargetDesc/RISCVMCCodeEmitter.cpp b/llvm/lib/Target/RISCV/MCTargetDesc/RISCVMCCodeEmitter.cpp
index ae13c00565c4..816206c477df 100644
--- a/llvm/lib/Target/RISCV/MCTargetDesc/RISCVMCCodeEmitter.cpp
+++ b/llvm/lib/Target/RISCV/MCTargetDesc/RISCVMCCodeEmitter.cpp
@@ -189,6 +189,9 @@ void RISCVMCCodeEmitter::encodeInstruction(const MCInst &MI, raw_ostream &OS,
   // Get byte count of instruction.
   unsigned Size = Desc.getSize();
 
+  // RISCVInstrInfo::getInstSizeInBytes hard-codes the number of expanded
+  // instructions for each pseudo, and must be updated when adding new pseudos
+  // or changing existing ones.
   if (MI.getOpcode() == RISCV::PseudoCALLReg ||
       MI.getOpcode() == RISCV::PseudoCALL ||
       MI.getOpcode() == RISCV::PseudoTAIL ||