From cee313d288a4faf0355d76fb6e0e927e211d08a5 Mon Sep 17 00:00:00 2001
From: Eric Christopher <echristo@gmail.com>
Date: Wed, 17 Apr 2019 04:52:47 +0000
Subject: Revert "Temporarily Revert "Add basic loop fusion pass.""

The reversion apparently deleted the test/Transforms directory.

Will be re-reverting again.

llvm-svn: 358552
---
 .../GlobalOpt/cleanup-pointer-root-users.ll        | 49 ++++++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 llvm/test/Transforms/GlobalOpt/cleanup-pointer-root-users.ll

(limited to 'llvm/test/Transforms/GlobalOpt/cleanup-pointer-root-users.ll')

diff --git a/llvm/test/Transforms/GlobalOpt/cleanup-pointer-root-users.ll b/llvm/test/Transforms/GlobalOpt/cleanup-pointer-root-users.ll
new file mode 100644
index 00000000000..16da5315db0
--- /dev/null
+++ b/llvm/test/Transforms/GlobalOpt/cleanup-pointer-root-users.ll
@@ -0,0 +1,49 @@
+; RUN: opt -globalopt -S -o - < %s | FileCheck %s
+
+@glbl = internal global i8* null
+
+define void @test1a() {
+; CHECK-LABEL: @test1a(
+; CHECK-NOT: store
+; CHECK-NEXT: ret void
+  store i8* null, i8** @glbl
+  ret void
+}
+
+define void @test1b(i8* %p) {
+; CHECK-LABEL: @test1b(
+; CHECK-NEXT: store
+; CHECK-NEXT: ret void
+  store i8* %p, i8** @glbl
+  ret void
+}
+
+define void @test2() {
+; CHECK-LABEL: @test2(
+; CHECK: alloca i8
+  %txt = alloca i8
+  call void @foo2(i8* %txt)
+  %call2 = call i8* @strdup(i8* %txt)
+  store i8* %call2, i8** @glbl
+  ret void
+}
+declare i8* @strdup(i8*)
+declare void @foo2(i8*)
+
+define void @test3() uwtable personality i32 (i32, i64, i8*, i8*)* @__gxx_personality_v0 {
+; CHECK-LABEL: @test3(
+; CHECK-NOT: bb1:
+; CHECK-NOT: bb2:
+; CHECK: invoke
+  %ptr = invoke i8* @_Znwm(i64 1)
+          to label %bb1 unwind label %bb2
+bb1:
+  store i8* %ptr, i8** @glbl
+  unreachable
+bb2:
+  %tmp1 = landingpad { i8*, i32 }
+          cleanup
+  resume { i8*, i32 } %tmp1
+}
+declare i32 @__gxx_personality_v0(i32, i64, i8*, i8*)
+declare i8* @_Znwm(i64)
-- 
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