[llvm] bb97378 - [AMDGPU] Only reinitialize disassembler Bytes array when needed. NFC. (#96666)

[via llvm-commits]

Author: Jay Foad
Date: 2024-06-27T15:45:30+01:00
New Revision: bb973785c9df1bf191ac4ff06ab1e7355dbd95c6

URL: https://github.com/llvm/llvm-project/commit/bb973785c9df1bf191ac4ff06ab1e7355dbd95c6
DIFF: https://github.com/llvm/llvm-project/commit/bb973785c9df1bf191ac4ff06ab1e7355dbd95c6.diff

LOG: [AMDGPU] Only reinitialize disassembler Bytes array when needed. NFC. (#96666)

Added: 
    

Modified: 
    llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp

Removed: 
    


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diff  --git a/llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp b/llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp
index 76a559c9443bd..0c0e9163fc6ef 100644
--- a/llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp
+++ b/llvm/lib/Target/AMDGPU/Disassembler/AMDGPUDisassembler.cpp
@@ -494,10 +494,10 @@ DecodeStatus AMDGPUDisassembler::getInstruction(MCInst &MI, uint64_t &Size,
       if (isGFX12() &&
           tryDecodeInst(DecoderTableGFX12W6496, MI, DecW, Address, CS))
         break;
-    }
 
-    // Reinitialize Bytes
-    Bytes = Bytes_.slice(0, MaxInstBytesNum);
+      // Reinitialize Bytes
+      Bytes = Bytes_.slice(0, MaxInstBytesNum);
+    }
 
     if (Bytes.size() >= 8) {
       const uint64_t QW = eatBytes<uint64_t>(Bytes);
@@ -552,10 +552,10 @@ DecodeStatus AMDGPUDisassembler::getInstruction(MCInst &MI, uint64_t &Size,
       if (isGFX12() &&
           tryDecodeInst(DecoderTableGFX12W6464, MI, QW, Address, CS))
         break;
-    }
 
-    // Reinitialize Bytes
-    Bytes = Bytes_.slice(0, MaxInstBytesNum);
+      // Reinitialize Bytes
+      Bytes = Bytes_.slice(0, MaxInstBytesNum);
+    }
 
     // Try decode 32-bit instruction
     if (Bytes.size() >= 4) {