Revert r237385, "[CodeGen] Reuse stack space from unused function results"

It broke clang stage2, at least tblgen.

llvm-svn: 237418

1 files changed, 0 insertions, 125 deletions

diff --git a/clang/test/CodeGenCXX/stack-reuse.cpp b/clang/test/CodeGenCXX/stack-reuse.cpp
deleted file mode 100644
index 67a0e4fe160..00000000000
--- a/clang/test/CodeGenCXX/stack-reuse.cpp
+++ /dev/null
@@ -1,125 +0,0 @@
-// RUN: %clang -target armv7l-unknown-linux-gnueabihf -S %s -o - -emit-llvm -O1 -disable-llvm-optzns | FileCheck %s
-
-// Stack should be reused when possible, no need to allocate two separate slots
-// if they have disjoint lifetime.
-
-// Sizes of objects are related to previously existed threshold of 32.  In case
-// of S_large stack size is rounded to 40 bytes.
-
-// 32B
-struct S_small {
-  int a[8];
-};
-
-// 36B
-struct S_large {
-  int a[9];
-};
-
-extern S_small foo_small();
-extern S_large foo_large();
-extern void bar_small(S_small*);
-extern void bar_large(S_large*);
-
-// Prevent mangling of function names.
-extern "C" {
-
-void small_rvoed_unnamed_temporary_object() {
-// CHECK-LABEL: define void @small_rvoed_unnamed_temporary_object
-// CHECK: call void @llvm.lifetime.start
-// CHECK: call void @_Z9foo_smallv
-// CHECK: call void @llvm.lifetime.end
-// CHECK: call void @llvm.lifetime.start
-// CHECK: call void @_Z9foo_smallv
-// CHECK: call void @llvm.lifetime.end
-
-  foo_small();
-  foo_small();
-}
-
-void large_rvoed_unnamed_temporary_object() {
-// CHECK-LABEL: define void @large_rvoed_unnamed_temporary_object
-// CHECK: call void @llvm.lifetime.start
-// CHECK: call void @_Z9foo_largev
-// CHECK: call void @llvm.lifetime.end
-// CHECK: call void @llvm.lifetime.start
-// CHECK: call void @_Z9foo_largev
-// CHECK: call void @llvm.lifetime.end
-
-  foo_large();
-  foo_large();
-}
-
-void small_rvoed_named_temporary_object() {
-// CHECK-LABEL: define void @small_rvoed_named_temporary_object
-// CHECK: call void @llvm.lifetime.start
-// CHECK: call void @_Z9foo_smallv
-// CHECK: call void @llvm.lifetime.end
-// CHECK: call void @llvm.lifetime.start
-// CHECK: call void @_Z9foo_smallv
-// CHECK: call void @llvm.lifetime.end
-
-  {
-    S_small s = foo_small();
-  }
-  {
-    S_small s = foo_small();
-  }
-}
-
-void large_rvoed_named_temporary_object() {
-// CHECK-LABEL: define void @large_rvoed_named_temporary_object
-// CHECK: call void @llvm.lifetime.start
-// CHECK: call void @_Z9foo_largev
-// CHECK: call void @llvm.lifetime.end
-// CHECK: call void @llvm.lifetime.start
-// CHECK: call void @_Z9foo_largev
-// CHECK: call void @llvm.lifetime.end
-
-  {
-    S_large s = foo_large();
-  }
-  {
-    S_large s = foo_large();
-  }
-}
-
-void small_auto_object() {
-// CHECK-LABEL: define void @small_auto_object
-// CHECK: call void @llvm.lifetime.start
-// CHECK: call void @_Z9bar_smallP7S_small
-// CHECK: call void @llvm.lifetime.end
-// CHECK: call void @llvm.lifetime.start
-// CHECK: call void @_Z9bar_smallP7S_small
-// CHECK: call void @llvm.lifetime.end
-
-  {
-    S_small s;
-    bar_small(&s);
-  }
-  {
-    S_small s;
-    bar_small(&s);
-  }
-}
-
-void large_auto_object() {
-// CHECK-LABEL: define void @large_auto_object
-// CHECK: call void @llvm.lifetime.start
-// CHECK: call void @_Z9bar_largeP7S_large
-// CHECK: call void @llvm.lifetime.end
-// CHECK: call void @llvm.lifetime.start
-// CHECK: call void @_Z9bar_largeP7S_large
-// CHECK: call void @llvm.lifetime.end
-
-  {
-    S_large s;
-    bar_large(&s);
-  }
-  {
-    S_large s;
-    bar_large(&s);
-  }
-}
-
-}