commit 4ada2ca7d82dab68d3646f3eb6dcdfee072e8ea4
author Argyrios Kyrtzidis <akyrtzi@gmail.com> Tue Sep 14 00:42:34 2010 +0000
committer Argyrios Kyrtzidis <akyrtzi@gmail.com> Tue Sep 14 00:42:34 2010 +0000
tree cdc1b145e91170c4a18d5c5466390e905c5c8321
parent 1f6206ed21e026ca7ddaf0bff9599c476301a695

Fix VLA miscompilation.

llvm.stacksave/llvm.stackrestore wasn't emitted for VLAs in inner scopes.
Fixes r8403108.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@113822 91177308-0d34-0410-b5e6-96231b3b80d8

test/CodeGen/vla.c

diff --git a/test/CodeGen/vla.c b/test/CodeGen/vla.c
index 0c53900..1770472 100644
--- a/test/CodeGen/vla.c
+++ b/test/CodeGen/vla.c
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 %s -emit-llvm -o %t
+// RUN: %clang_cc1 %s -emit-llvm -o - | FileCheck %s
 
 int b(char* x);
 
@@ -35,3 +35,18 @@
   int (*a[5])[count];
   int (*b)[][count];
 }
+
+// rdar://8403108
+// CHECK: define void @f_8403108
+void f_8403108(unsigned x) {
+  // CHECK: call i8* @llvm.stacksave()
+  char s1[x];
+  while (1) {
+    // CHECK: call i8* @llvm.stacksave()
+    char s2[x];
+    if (1)
+      break;
+  // CHECK: call void @llvm.stackrestore(i8*
+  }
+  // CHECK: call void @llvm.stackrestore(i8*
+}