[PATCH] [PATCH 1/2] Add a "probe-stack" attribute

[John Kåre Alsaker]

No.


http://reviews.llvm.org/D9653

Files:
  lib/Transforms/IPO/Inliner.cpp
  test/Transforms/Inline/inline-probe-stack.ll

Index: lib/Transforms/IPO/Inliner.cpp
===================================================================
--- lib/Transforms/IPO/Inliner.cpp
+++ lib/Transforms/IPO/Inliner.cpp
@@ -132,6 +132,12 @@
 
   AdjustCallerSSPLevel(Caller, Callee);
 
+  // If the callee requires stack probes, we ensure that the caller will
+  // require those too
+  if (Callee->hasFnAttribute("probe-stack")) {
+    Caller->addFnAttr("probe-stack");
+  }
+
   // Look at all of the allocas that we inlined through this call site.  If we
   // have already inlined other allocas through other calls into this function,
   // then we know that they have disjoint lifetimes and that we can merge them.
Index: test/Transforms/Inline/inline-probe-stack.ll
===================================================================
--- /dev/null
+++ test/Transforms/Inline/inline-probe-stack.ll
@@ -0,0 +1,12 @@
+; RUN: opt %s -inline -S | FileCheck %s
+
+define internal void @inner() "probe-stack" {
+  ret void
+}
+
+define void @outer() {
+  call void @inner()
+  ret void
+}
+; CHECK: define void @outer() #0
+; CHECK: attributes #0 = { "probe-stack" }

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