[AsmPrinter] Use the per-function subtarget to emit inline asm instructions that

are not at the file level.

Previously, the default subtarget created from the target triple was used to
emit inline asm instructions. Compilation would fail in cases where the feature
bits necessary to assemble an inline asm instruction in a function weren't set.

llvm-svn: 232392

1 files changed, 5 insertions, 1 deletions

diff --git a/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp b/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
index 4a03e5ef045..b2919f2301e 100644
--- a/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
@@ -221,9 +221,13 @@ bool AsmPrinter::doInitialization(Module &M) {
 
   // Emit module-level inline asm if it exists.
   if (!M.getModuleInlineAsm().empty()) {
+    // We're at the module level. Construct MCSubtarget from the default CPU
+    // and target triple.
+    std::unique_ptr<MCSubtargetInfo> STI(TM.getTarget().createMCSubtargetInfo(
+        TM.getTargetTriple(), TM.getTargetCPU(), TM.getTargetFeatureString()));
     OutStreamer.AddComment("Start of file scope inline assembly");
     OutStreamer.AddBlankLine();
-    EmitInlineAsm(M.getModuleInlineAsm()+"\n");
+    EmitInlineAsm(M.getModuleInlineAsm()+"\n", *STI);
     OutStreamer.AddComment("End of file scope inline assembly");
     OutStreamer.AddBlankLine();
   }