[LLVM][WebAssembly] Change custom section naming in object file

Author: Lukasdoe

llvm/lib/Target/WebAssembly/WebAssemblyAsmPrinter.cpp

@@ -462,7 +462,7 @@ void WebAssemblyAsmPrinter::emitEndOfAsmFile(Module &M) {
 
 void WebAssemblyAsmPrinter::emitBranchHintSection() const {
   MCSectionWasm *BranchHintsSection = OutContext.getWasmSection(
-      "metadata.code.branch_hint", SectionKind::getMetadata());
+      ".custom_section.metadata.code.branch_hint", SectionKind::getMetadata());
   OutStreamer->pushSection();
   OutStreamer->switchSection(BranchHintsSection);
   const uint32_t NumFunctionHints =

llvm/test/MC/WebAssembly/branch-hints.ll

@@ -24,7 +24,7 @@
 ; ASM-CHECK-NEXT:   .int8   14
 ; ASM-CHECK-NEXT:   .ascii  "branch-hinting"
 
-; ASM-CHECK:        .section        metadata.code.branch_hint,"",@
+; ASM-CHECK:        .section        .custom_section.metadata.code.branch_hint,"",@
 ; ASM-CHECK-NEXT:   .asciz  "\202\200\200\200"
 ; ASM-CHECK-NEXT:   .uleb128 test_unlikely_likely_branch@FUNCINDEX
 ; ASM-CHECK-NEXT:   .int8   2