[MC] Delete unused MCAsmInfoELF::UsesNonexecutableStackSection after EM_WEBASSEMBLY was removed in D48744

MaskRay · MaskRay · commit fdb408f348f9 · 2019-12-15T15:43:30.000-08:00
This removes remnant of D15969 which hasn't been removed by D48744.
diff --git a/llvm/include/llvm/MC/MCAsmInfoELF.h b/llvm/include/llvm/MC/MCAsmInfoELF.h
@@ -18,10 +18,6 @@ class MCAsmInfoELF : public MCAsmInfo {
   MCSection *getNonexecutableStackSection(MCContext &Ctx) const final;
 
 protected:
-  /// Targets which have non-executable stacks by default can set this to false
-  /// to disable the special section which requests a non-executable stack.
-  bool UsesNonexecutableStackSection = true;
-
   MCAsmInfoELF();
 };
 
diff --git a/llvm/lib/MC/MCAsmInfoELF.cpp b/llvm/lib/MC/MCAsmInfoELF.cpp
@@ -21,8 +21,6 @@ using namespace llvm;
 void MCAsmInfoELF::anchor() {}
 
 MCSection *MCAsmInfoELF::getNonexecutableStackSection(MCContext &Ctx) const {
-  if (!UsesNonexecutableStackSection)
-    return nullptr;
   return Ctx.getELFSection(".note.GNU-stack", ELF::SHT_PROGBITS, 0);
 }
 
diff --git a/llvm/test/CodeGen/WebAssembly/non-executable-stack.ll b/llvm/test/CodeGen/WebAssembly/non-executable-stack.ll

Original file line number	Diff line number	Diff line change
`@@ -21,8 +21,6 @@ using namespace llvm;`
`21`	`21`	`void MCAsmInfoELF::anchor() {}`
`22`	`22`
`23`	`23`	`MCSection *MCAsmInfoELF::getNonexecutableStackSection(MCContext &Ctx) const {`
`24`		`- if (!UsesNonexecutableStackSection)`
`25`		`- return nullptr;`
`26`	`24`	`return Ctx.getELFSection(".note.GNU-stack", ELF::SHT_PROGBITS, 0);`
`27`	`25`	`}`
`28`	`26`