Add sycl_global address space inference.

JackAKirk · JackAKirk · commit 694bf67cae7c · 2024-10-16T18:25:44.000+01:00
Try to avoid using slow generic address space where possible.

Signed-off-by: JackAKirk &lt;jack.kirk@codeplay.com&gt;
diff --git a/clang/lib/CodeGen/CodeGenModule.cpp b/clang/lib/CodeGen/CodeGenModule.cpp
@@ -5755,6 +5755,9 @@ LangAS CodeGenModule::GetGlobalVarAddressSpace(const VarDecl *D) {
   }
 
   if (LangOpts.SYCLIsDevice && D) {
+    if (D->hasAttr<SYCLGlobalVarAttr>())
+      return LangAS::sycl_global;
+
     auto *Scope = D->getAttr<SYCLScopeAttr>();
     if (Scope && Scope->isWorkGroup())
       return LangAS::sycl_local;

Original file line number	Diff line number	Diff line change
`@@ -5755,6 +5755,9 @@ LangAS CodeGenModule::GetGlobalVarAddressSpace(const VarDecl *D) {`
`5755`	`5755`	`}`
`5756`	`5756`
`5757`	`5757`	`if (LangOpts.SYCLIsDevice && D) {`
	`5758`	`+ if (D->hasAttr<SYCLGlobalVarAttr>())`
	`5759`	`+ return LangAS::sycl_global;`
	`5760`	`+`
`5758`	`5761`	`auto *Scope = D->getAttr<SYCLScopeAttr>();`
`5759`	`5762`	`if (Scope && Scope->isWorkGroup())`
`5760`	`5763`	`return LangAS::sycl_local;`