Hi,
Currently -fno-inline doesnt do much, it just prevents adding InlineHint
attributes. This means that we differ from gcc which prevents all
functions (except always_inline) from inlining. This simple patch
implements that behaviour, is that ok?
Index: lib/CodeGen/CodeGenFunction.cpp
===================================================================
--- lib/CodeGen/CodeGenFunction.cpp (revision 199224)
+++ lib/CodeGen/CodeGenFunction.cpp (working copy)
@@ -510,7 +510,7 @@
// Pass inline keyword to optimizer if it appears explicitly on any
// declaration.
- if (!CGM.getCodeGenOpts().NoInline)
+ if (!CGM.getCodeGenOpts().NoInline) {
if (const FunctionDecl *FD = dyn_cast_or_null<FunctionDecl>(D))
for (FunctionDecl::redecl_iterator RI = FD->redecls_begin(),
RE = FD->redecls_end(); RI != RE; ++RI)
@@ -518,6 +518,10 @@
Fn->addFnAttr(llvm::Attribute::InlineHint);
break;
}
+ } else if (const FunctionDecl *FD = dyn_cast_or_null<FunctionDecl>(D))
+ if (!FD->hasAttr<AlwaysInlineAttr>() &&
+ !FD->hasAttr<ForceInlineAttr>())
+ Fn->addFnAttr(llvm::Attribute::NoInline);
if (getLangOpts().OpenCL) {
// Add metadata for a kernel function.
Index: test/CodeGen/noinline.c
===================================================================
--- test/CodeGen/noinline.c (revision 199224)
+++ test/CodeGen/noinline.c (working copy)
@@ -7,6 +7,7 @@
volatile int *pa = (int*) 0x1000;
void foo() {
+// NOINLINE: Function Attrs: noinline
// NOINLINE: @foo
// NOINLINE: dont_inline_me
// NOINLINE-NOT: inlinehint
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