[llvm] f8e783f - [DX] Speculative fix for big endian encoding

[Chris Bieneman via llvm-commits]

Author: Chris Bieneman
Date: 2023-02-01T23:19:35-06:00
New Revision: f8e783f1662812a0a417e463f1ea646c96bb0743

URL: https://github.com/llvm/llvm-project/commit/f8e783f1662812a0a417e463f1ea646c96bb0743
DIFF: https://github.com/llvm/llvm-project/commit/f8e783f1662812a0a417e463f1ea646c96bb0743.diff

LOG: [DX] Speculative fix for big endian encoding

I missed byte swapping the size field.

Added: 
    

Modified: 
    llvm/lib/MC/DXContainerPSVInfo.cpp

Removed: 
    


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diff  --git a/llvm/lib/MC/DXContainerPSVInfo.cpp b/llvm/lib/MC/DXContainerPSVInfo.cpp
index 5463f850be1e..399f54c8332f 100644
--- a/llvm/lib/MC/DXContainerPSVInfo.cpp
+++ b/llvm/lib/MC/DXContainerPSVInfo.cpp
@@ -26,6 +26,8 @@ void PSVRuntimeInfo::write(raw_ostream &OS, uint32_t Version) const {
   default:
     InfoSize = sizeof(dxbc::PSV::v2::RuntimeInfo);
   }
+  if (sys::IsBigEndianHost)
+    sys::swapByteOrder(InfoSize);
   // Write the size of the info.
   OS.write(reinterpret_cast<const char *>(&InfoSize), sizeof(uint32_t));
   // Write the info itself.