[llvm] 01fee8d - [DebugInfo][test] Attempt to fix big endian build bots

[James Henderson via llvm-commits]

Author: James Henderson
Date: 2020-06-23T12:34:27+01:00
New Revision: 01fee8dce549a7c3787655c48a35ce22168d87e2

URL: https://github.com/llvm/llvm-project/commit/01fee8dce549a7c3787655c48a35ce22168d87e2
DIFF: https://github.com/llvm/llvm-project/commit/01fee8dce549a7c3787655c48a35ce22168d87e2.diff

LOG: [DebugInfo][test] Attempt to fix big endian build bots

Commit 9782c922c broke them since it prints raw bytes, whose order will
be different dependent on the endianness of the host.

Added: 
    

Modified: 
    llvm/unittests/DebugInfo/DWARF/DWARFDebugLineTest.cpp

Removed: 
    


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diff  --git a/llvm/unittests/DebugInfo/DWARF/DWARFDebugLineTest.cpp b/llvm/unittests/DebugInfo/DWARF/DWARFDebugLineTest.cpp
index c8b7535b9066..ad59098ff405 100644
--- a/llvm/unittests/DebugInfo/DWARF/DWARFDebugLineTest.cpp
+++ b/llvm/unittests/DebugInfo/DWARF/DWARFDebugLineTest.cpp
@@ -1443,6 +1443,21 @@ struct TruncatedExtendedOpcodeFixture
   void SetUp() {
     std::tie(BodyLength, OpcodeLength, Opcode, Operands, ExpectedOutput,
              ExpectedErr) = GetParam();
+    // Swap the byte order of the operands on big endian hosts, so that the raw
+    // bytes are always in the same order. ValLen.Value is a uint64_t, so make
+    // sure to shift the value back to the actually used bits for the
+    // appropriate type.
+    if (sys::IsBigEndianHost)
+      for (LineTable::ValueAndLength &ValLen : Operands)
+        if (ValLen.Length != LineTable::SLEB &&
+            ValLen.Length != LineTable::ULEB &&
+            ValLen.Length != LineTable::Byte) {
+          sys::swapByteOrder(ValLen.Value);
+          if (ValLen.Length == LineTable::Long)
+              ValLen.Value >>= 32;
+          if (ValLen.Length == LineTable::Half)
+              ValLen.Value >>= 48;
+        }
   }
 
   uint64_t OpcodeLength;