[AMDGPU] Set metadata access for explicit section
Summary:
This patch provides a means to set Metadata section kind
for a global variable, if its explicit section name is
prefixed with ".AMDGPU.metadata."
This could be useful to make the global variable go to
an ELF section without any section flags set.
Reviewers: dstuttard, tpr, kzhuravl, nhaehnle, t-tye
Reviewed By: dstuttard, kzhuravl
Subscribers: llvm-commits, arsenm, jvesely, wdng, yaxunl, t-tye
Differential Revision: https://reviews.llvm.org/D55267
llvm-svn: 348922
diff --git a/llvm/lib/Target/AMDGPU/AMDGPUTargetObjectFile.cpp b/llvm/lib/Target/AMDGPU/AMDGPUTargetObjectFile.cpp
index e2f718b..7a72071 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPUTargetObjectFile.cpp
+++ b/llvm/lib/Target/AMDGPU/AMDGPUTargetObjectFile.cpp
@@ -29,3 +29,13 @@
return TargetLoweringObjectFileELF::SelectSectionForGlobal(GO, Kind, TM);
}
+
+MCSection *AMDGPUTargetObjectFile::getExplicitSectionGlobal(
+ const GlobalObject *GO, SectionKind SK, const TargetMachine &TM) const {
+ // Set metadata access for the explicit section
+ StringRef SectionName = GO->getSection();
+ if (SectionName.startswith(".AMDGPU.metadata."))
+ SK = SectionKind::getMetadata();
+
+ return TargetLoweringObjectFileELF::getExplicitSectionGlobal(GO, SK, TM);
+}
