Fix for PR1633: Verifier doesn't fully verify GC intrinsics
LLVM now enforces the following prototypes for the write barriers:
<ty>* @llvm.gcread(<ty2>*, <ty>**)
void @llvm.gcwrite(<ty>*, <ty2>*, <ty>**)
And for @llvm.gcroot, the first stack slot is verified to be an alloca or a
bitcast of an alloca.
Fixes test/CodeGen/Generic/GC/lower_gcroot.ll, which violated these.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42051 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/Generic/GC/lower_gcroot.ll b/test/CodeGen/Generic/GC/lower_gcroot.ll
index 3a3abac..2dbbc83 100644
--- a/test/CodeGen/Generic/GC/lower_gcroot.ll
+++ b/test/CodeGen/Generic/GC/lower_gcroot.ll
@@ -3,7 +3,8 @@
%Env = type opaque*
define void @.main(%Env) {
- call void @llvm.gcroot( %Env* null, %Env null )
+ %Root = alloca %Env
+ call void @llvm.gcroot( %Env* %Root, %Env null )
unreachable
}
diff --git a/test/Verifier/gcread-ptrptr.ll b/test/Verifier/gcread-ptrptr.ll
new file mode 100644
index 0000000..bcfc6eb
--- /dev/null
+++ b/test/Verifier/gcread-ptrptr.ll
@@ -0,0 +1,13 @@
+; RUN: not llvm-as < %s
+; PR1633
+
+%meta = type { i8* }
+%obj = type { %meta* }
+
+declare %obj* @llvm.gcread(%obj*, %obj*)
+
+define %obj* @f() {
+entry:
+ %x = call %obj* @llvm.gcread(%obj* null, %obj* null)
+ ret %obj* %x
+}
diff --git a/test/Verifier/gcroot-alloca.ll b/test/Verifier/gcroot-alloca.ll
new file mode 100644
index 0000000..c44321a
--- /dev/null
+++ b/test/Verifier/gcroot-alloca.ll
@@ -0,0 +1,14 @@
+; RUN: not llvm-as < %s
+; PR1633
+
+%meta = type { i8* }
+%obj = type { %meta* }
+
+declare void @llvm.gcroot(%obj**, %meta*)
+
+define void @f() {
+entry:
+ call void @llvm.gcroot(%obj** null, %meta* null)
+
+ ret void
+}
diff --git a/test/Verifier/gcroot-meta.ll b/test/Verifier/gcroot-meta.ll
new file mode 100644
index 0000000..51d1951
--- /dev/null
+++ b/test/Verifier/gcroot-meta.ll
@@ -0,0 +1,16 @@
+; RUN: not llvm-as < %s
+; PR1633
+
+%meta = type { i8* }
+%obj = type { %meta* }
+
+declare void @llvm.gcroot(%obj**, %meta*)
+
+define void @f() {
+entry:
+ %local.obj = alloca %obj*
+ %local.meta = alloca %meta
+ call void @llvm.gcroot(%obj** %local.obj, %meta* %local.meta)
+
+ ret void
+}
diff --git a/test/Verifier/gcroot-ptrptr.ll b/test/Verifier/gcroot-ptrptr.ll
new file mode 100644
index 0000000..0a7738d
--- /dev/null
+++ b/test/Verifier/gcroot-ptrptr.ll
@@ -0,0 +1,14 @@
+; RUN: not llvm-as < %s
+; PR1633
+
+%meta = type { i8* }
+%obj = type { %meta* }
+
+declare void @llvm.gcroot(%obj*, %meta*)
+
+define void @f() {
+entry:
+ %local.obj = alloca %obj
+ call void @llvm.gcroot(%obj* %local.obj, %meta* null)
+ ret void
+}
diff --git a/test/Verifier/gcwrite-ptrptr.ll b/test/Verifier/gcwrite-ptrptr.ll
new file mode 100644
index 0000000..b1e96c8
--- /dev/null
+++ b/test/Verifier/gcwrite-ptrptr.ll
@@ -0,0 +1,13 @@
+; RUN: not llvm-as < %s
+; PR1633
+
+%meta = type { i8* }
+%obj = type { %meta* }
+
+declare void @llvm.gcwrite(%obj*, %obj*, %obj*)
+
+define void @f() {
+entry:
+ call void @llvm.gcwrite(%obj* null, %obj* null, %obj* null)
+ ret void
+}