[llvm-branch-commits] [llvm] [SystemZ][z/OS] Remove temporary gnu as output on z/OS (PR #181906)

[Kai Nacke via llvm-branch-commits]

https://github.com/redstar created https://github.com/llvm/llvm-project/pull/181906

On z/OS, there is only HLASM as system assembler available. Since all LIT tests are migrated, the temporary option can now be removed.

>From 960dbff617bc7a0a3cb7a2626ada9b648e7fec31 Mon Sep 17 00:00:00 2001
From: Kai Nacke <kai.peter.nacke at ibm.com>
Date: Tue, 17 Feb 2026 15:47:11 -0500
Subject: [PATCH] [SystemZ][z/OS] Remove temporary gnu as output on z/OS

On z/OS, there is only HLASM as system assembler available. Since
all LIT tests are migrated, the temporary option ca now be removed.
---
 .../SystemZ/MCTargetDesc/SystemZMCTargetDesc.cpp       | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/llvm/lib/Target/SystemZ/MCTargetDesc/SystemZMCTargetDesc.cpp b/llvm/lib/Target/SystemZ/MCTargetDesc/SystemZMCTargetDesc.cpp
index 4356f7ad05121..fa6a6a02f98b7 100644
--- a/llvm/lib/Target/SystemZ/MCTargetDesc/SystemZMCTargetDesc.cpp
+++ b/llvm/lib/Target/SystemZ/MCTargetDesc/SystemZMCTargetDesc.cpp
@@ -37,12 +37,6 @@ using namespace llvm;
 #define GET_REGINFO_MC_DESC
 #include "SystemZGenRegisterInfo.inc"
 
-// Temporary option to assist with the migration to a new HLASMAsmStreamer on
-// z/OS
-static cl::opt<bool> GNUAsOnzOSCL("emit-gnuas-syntax-on-zos",
-                                  cl::desc("Emit GNU Assembly Syntax on z/OS."),
-                                  cl::init(false));
-
 const unsigned SystemZMC::GR32Regs[16] = {
     SystemZ::R0L,  SystemZ::R1L,  SystemZ::R2L,  SystemZ::R3L,
     SystemZ::R4L,  SystemZ::R5L,  SystemZ::R6L,  SystemZ::R7L,
@@ -203,7 +197,7 @@ static MCInstPrinter *createSystemZMCInstPrinter(const Triple &T,
 static MCTargetStreamer *createAsmTargetStreamer(MCStreamer &S,
                                                  formatted_raw_ostream &OS,
                                                  MCInstPrinter *InstPrint) {
-  if (S.getContext().getTargetTriple().isOSzOS() && !GNUAsOnzOSCL)
+  if (S.getContext().getTargetTriple().isOSzOS())
     return new SystemZTargetHLASMStreamer(S, OS);
   else
     return new SystemZTargetGNUStreamer(S, OS);
@@ -215,7 +209,7 @@ static MCStreamer *createSystemZAsmStreamer(
     std::unique_ptr<MCAsmBackend> TAB) {
 
   auto TT = Ctx.getTargetTriple();
-  if (TT.isOSzOS() && !GNUAsOnzOSCL)
+  if (TT.isOSzOS())
     return new SystemZHLASMAsmStreamer(Ctx, std::move(OS), std::move(IP),
                                        std::move(CE), std::move(TAB));