[llvm] eb68cbb - Fix big endian build bots

[Chris Bieneman via llvm-commits]

Author: Chris Bieneman
Date: 2022-06-06T19:27:23-05:00
New Revision: eb68cbb405512b448a2f3336e102982c144ad4e9

URL: https://github.com/llvm/llvm-project/commit/eb68cbb405512b448a2f3336e102982c144ad4e9
DIFF: https://github.com/llvm/llvm-project/commit/eb68cbb405512b448a2f3336e102982c144ad4e9.diff

LOG: Fix big endian build bots

Another case of reading a value from a struct that has been byte
swapped to write out. This should address the failure on the ppcbe bot.

Added: 
    

Modified: 
    llvm/lib/ObjectYAML/DXContainerEmitter.cpp

Removed: 
    


################################################################################
diff  --git a/llvm/lib/ObjectYAML/DXContainerEmitter.cpp b/llvm/lib/ObjectYAML/DXContainerEmitter.cpp
index e3ab1ef9f7a6e..260e059415cdf 100644
--- a/llvm/lib/ObjectYAML/DXContainerEmitter.cpp
+++ b/llvm/lib/ObjectYAML/DXContainerEmitter.cpp
@@ -144,14 +144,15 @@ void DXContainerWriter::writeParts(raw_ostream &OS) {
         Header.Size = P.Program->Size.getValue();
       else
         Header.Size = sizeof(dxbc::ProgramHeader) + Header.Bitcode.Size;
+
+      uint32_t BitcodeOffset = Header.Bitcode.Offset;
       if (sys::IsBigEndianHost)
         Header.swapBytes();
       OS.write(reinterpret_cast<const char *>(&Header),
                sizeof(dxbc::ProgramHeader));
       if (P.Program->DXIL) {
-        if (Header.Bitcode.Offset > sizeof(dxbc::BitcodeHeader)) {
-          uint32_t PadBytes =
-              Header.Bitcode.Offset - sizeof(dxbc::BitcodeHeader);
+        if (BitcodeOffset > sizeof(dxbc::BitcodeHeader)) {
+          uint32_t PadBytes = BitcodeOffset - sizeof(dxbc::BitcodeHeader);
           OS.write_zeros(PadBytes);
         }
         OS.write(reinterpret_cast<char *>(P.Program->DXIL->data()),