diff options
| -rw-r--r-- | llvm/lib/Target/X86/X86AsmPrinter.cpp | 6 | ||||
| -rw-r--r-- | llvm/test/CodeGen/X86/x86-16.ll | 20 |
2 files changed, 26 insertions, 0 deletions
diff --git a/llvm/lib/Target/X86/X86AsmPrinter.cpp b/llvm/lib/Target/X86/X86AsmPrinter.cpp index 9d0ac319859..0a00463f8bf 100644 --- a/llvm/lib/Target/X86/X86AsmPrinter.cpp +++ b/llvm/lib/Target/X86/X86AsmPrinter.cpp @@ -538,6 +538,12 @@ void X86AsmPrinter::EmitStartOfAsmFile(Module &M) { } } OutStreamer->EmitSyntaxDirective(); + + // If this is not inline asm and we're in 16-bit + // mode prefix assembly with .code16. + bool is16 = TT.getEnvironment() == Triple::CODE16; + if (M.getModuleInlineAsm().empty() && is16) + OutStreamer->EmitAssemblerFlag(MCAF_Code16); } static void diff --git a/llvm/test/CodeGen/X86/x86-16.ll b/llvm/test/CodeGen/X86/x86-16.ll new file mode 100644 index 00000000000..775b2c447bb --- /dev/null +++ b/llvm/test/CodeGen/X86/x86-16.ll @@ -0,0 +1,20 @@ +; RUN: llc < %s | FileCheck %s +target datalayout = "e-m:e-p:32:32-f64:32:64-f80:32-n8:16:32-S128" +target triple = "i386-unknown-linux-code16" + +; Function Attrs: nounwind +define i32 @main() #0 { + %retval = alloca i32, align 4 + store i32 0, i32* %retval, align 4 + ret i32 0 +} + +; CHECK: .code16 +; CHECK-LABEL: main + + +attributes #0 = { nounwind } + +!llvm.ident = !{!0} + +!0 = !{!"clang version 3.9.0 (trunk 265439) (llvm/trunk 265567)"}
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