[llvm] [llvm-objdump] Fix --disassembler-color with --macho flag (PR #163815)

[Ryan Mansfield via llvm-commits]

https://github.com/rjmansfield created https://github.com/llvm/llvm-project/pull/163815

The --disassembler-color option was being ignored when using the --macho flag because DisassembleMachO() never called setUseColor() on the instruction printer.

>From f43372049d65a37af8492b2e78d1cb2e104914e5 Mon Sep 17 00:00:00 2001
From: Ryan Mansfield <ryan_mansfield at apple.com>
Date: Thu, 16 Oct 2025 09:41:48 -0400
Subject: [PATCH] [llvm-objdump] Fix --disassembler-color with --macho flag

The --disassembler-color option was being ignored when using the --macho
flag because DisassembleMachO() never called setUseColor() on the
instruction printer.
---
 .../MachO/arm64-disassembly-color.s           |  4 +++
 llvm/tools/llvm-objdump/MachODump.cpp         | 26 +++++++++++++++++++
 llvm/tools/llvm-objdump/llvm-objdump.cpp      |  9 +------
 llvm/tools/llvm-objdump/llvm-objdump.h        |  8 ++++++
 4 files changed, 39 insertions(+), 8 deletions(-)

diff --git a/llvm/test/tools/llvm-objdump/MachO/arm64-disassembly-color.s b/llvm/test/tools/llvm-objdump/MachO/arm64-disassembly-color.s
index 50cd24c766763..b612e9a1b3f81 100644
--- a/llvm/test/tools/llvm-objdump/MachO/arm64-disassembly-color.s
+++ b/llvm/test/tools/llvm-objdump/MachO/arm64-disassembly-color.s
@@ -6,6 +6,10 @@
 // RUN: llvm-objdump --disassembler-color=off --disassemble %t | FileCheck %s --check-prefix=NOCOLOR
 // RUN: llvm-objdump --disassembler-color=terminal --disassemble %t | FileCheck %s --check-prefix=NOCOLOR
 
+// Test with --macho flag to ensure DisassembleMachO respects color settings
+// RUN: llvm-objdump --disassembler-color=on --macho --disassemble %t | FileCheck %s --check-prefix=COLOR
+// RUN: llvm-objdump --disassembler-color=off --macho --disassemble %t | FileCheck %s --check-prefix=NOCOLOR
+
 sub	sp, sp, #16
 str	w0, [sp, #12]
 ldr	w8, [sp, #12]
diff --git a/llvm/tools/llvm-objdump/MachODump.cpp b/llvm/tools/llvm-objdump/MachODump.cpp
index 8e9c91fde544d..b707617928f95 100644
--- a/llvm/tools/llvm-objdump/MachODump.cpp
+++ b/llvm/tools/llvm-objdump/MachODump.cpp
@@ -7321,6 +7321,19 @@ static void DisassembleMachO(StringRef Filename, MachOObjectFile *MachOOF,
   CHECK_TARGET_INFO_CREATION(IP);
   // Set the display preference for hex vs. decimal immediates.
   IP->setPrintImmHex(PrintImmHex);
+  // Set up disassembler color output.
+  switch (DisassemblyColor) {
+  case ColorOutput::Enable:
+    IP->setUseColor(true);
+    break;
+  case ColorOutput::Auto:
+    IP->setUseColor(outs().has_colors());
+    break;
+  case ColorOutput::Disable:
+  case ColorOutput::Invalid:
+    IP->setUseColor(false);
+    break;
+  }
   // Comment stream and backing vector.
   SmallString<128> CommentsToEmit;
   raw_svector_ostream CommentStream(CommentsToEmit);
@@ -7374,6 +7387,19 @@ static void DisassembleMachO(StringRef Filename, MachOObjectFile *MachOOF,
     CHECK_THUMB_TARGET_INFO_CREATION(ThumbIP);
     // Set the display preference for hex vs. decimal immediates.
     ThumbIP->setPrintImmHex(PrintImmHex);
+    // Set up disassembler color output.
+    switch (DisassemblyColor) {
+    case ColorOutput::Enable:
+      ThumbIP->setUseColor(true);
+      break;
+    case ColorOutput::Auto:
+      ThumbIP->setUseColor(outs().has_colors());
+      break;
+    case ColorOutput::Disable:
+    case ColorOutput::Invalid:
+      ThumbIP->setUseColor(false);
+      break;
+    }
   }
 
 #undef CHECK_TARGET_INFO_CREATION
diff --git a/llvm/tools/llvm-objdump/llvm-objdump.cpp b/llvm/tools/llvm-objdump/llvm-objdump.cpp
index 3ec644a472bfc..aa3106f268397 100644
--- a/llvm/tools/llvm-objdump/llvm-objdump.cpp
+++ b/llvm/tools/llvm-objdump/llvm-objdump.cpp
@@ -291,13 +291,6 @@ class BBAddrMapInfo {
 
 #define DEBUG_TYPE "objdump"
 
-enum class ColorOutput {
-  Auto,
-  Enable,
-  Disable,
-  Invalid,
-};
-
 static uint64_t AdjustVMA;
 static bool AllHeaders;
 static std::string ArchName;
@@ -310,7 +303,7 @@ bool objdump::SymbolDescription;
 bool objdump::TracebackTable;
 static std::vector<std::string> DisassembleSymbols;
 static bool DisassembleZeroes;
-static ColorOutput DisassemblyColor;
+ColorOutput objdump::DisassemblyColor;
 DIDumpType objdump::DwarfDumpType;
 static bool DynamicRelocations;
 static bool FaultMapSection;
diff --git a/llvm/tools/llvm-objdump/llvm-objdump.h b/llvm/tools/llvm-objdump/llvm-objdump.h
index 3525be9a5314a..ed0918c93c28e 100644
--- a/llvm/tools/llvm-objdump/llvm-objdump.h
+++ b/llvm/tools/llvm-objdump/llvm-objdump.h
@@ -43,6 +43,13 @@ namespace objdump {
 
 enum DebugFormat { DFASCII, DFDisabled, DFInvalid, DFLimitsOnly, DFUnicode };
 
+enum class ColorOutput {
+  Auto,
+  Enable,
+  Disable,
+  Invalid,
+};
+
 extern bool ArchiveHeaders;
 extern int DbgIndent;
 extern DebugFormat DbgVariables;
@@ -51,6 +58,7 @@ extern bool Demangle;
 extern bool Disassemble;
 extern bool DisassembleAll;
 extern std::vector<std::string> DisassemblerOptions;
+extern ColorOutput DisassemblyColor;
 extern DIDumpType DwarfDumpType;
 extern std::vector<std::string> FilterSections;
 extern bool LeadingAddr;