1 files changed, 146 insertions, 0 deletions
diff --git a/clang/test/CodeGenCXX/pr12251.cpp b/clang/test/CodeGenCXX/pr12251.cpp
new file mode 100644
index 0000000..a9920c0
--- /dev/null
+++ b/clang/test/CodeGenCXX/pr12251.cpp
@@ -0,0 +1,146 @@
+// RUN: %clang_cc1 %s -emit-llvm -O1 -relaxed-aliasing -fstrict-enums -std=c++11 -o - | FileCheck %s
+// RUN: %clang_cc1 %s -emit-llvm -O1 -relaxed-aliasing -std=c++11 -o - | FileCheck --check-prefix=NO-STRICT-ENUMS %s
+
+bool f(bool *x) {
+  return *x;
+}
+// CHECK: define zeroext i1 @_Z1fPb
+// CHECK: load i8* %{{.*}}, align 1, !range !0
+
+// Only enum-tests follow. Ensure that after the bool test, no further range
+// metadata shows up when strict enums are disabled.
+// NO-STRICT-ENUMS: define zeroext i1 @_Z1fPb
+// NO-STRICT-ENUMS: load i8* %{{.*}}, align 1, !range !0
+// NO-STRICT-ENUMS-NOT: !range
+
+enum e1 { };
+e1 g1(e1 *x) {
+  return *x;
+}
+// CHECK: define i32 @_Z2g1P2e1
+// CHECK: load i32* %x, align 4, !range !1
+
+enum e2 { e2_a = 0 };
+e2 g2(e2 *x) {
+  return *x;
+}
+// CHECK: define i32 @_Z2g2P2e2
+// CHECK: load i32* %x, align 4, !range !1
+
+enum e3 { e3_a = 16 };
+e3 g3(e3 *x) {
+  return *x;
+}
+// CHECK: define i32 @_Z2g3P2e3
+// CHECK: load i32* %x, align 4, !range !2
+
+enum e4 { e4_a = -16};
+e4 g4(e4 *x) {
+  return *x;
+}
+// CHECK: define i32 @_Z2g4P2e4
+// CHECK: load i32* %x, align 4, !range !3
+
+enum e5 { e5_a = -16, e5_b = 16};
+e5 g5(e5 *x) {
+  return *x;
+}
+// CHECK: define i32 @_Z2g5P2e5
+// CHECK: load i32* %x, align 4, !range !4
+
+enum e6 { e6_a = -1 };
+e6 g6(e6 *x) {
+  return *x;
+}
+// CHECK: define i32 @_Z2g6P2e6
+// CHECK: load i32* %x, align 4, !range !5
+
+enum e7 { e7_a = -16, e7_b = 2};
+e7 g7(e7 *x) {
+  return *x;
+}
+// CHECK: define i32 @_Z2g7P2e7
+// CHECK: load i32* %x, align 4, !range !3
+
+enum e8 { e8_a = -17};
+e8 g8(e8 *x) {
+  return *x;
+}
+// CHECK: define i32 @_Z2g8P2e8
+// CHECK: load i32* %x, align 4, !range !4
+
+enum e9 { e9_a = 17};
+e9 g9(e9 *x) {
+  return *x;
+}
+// CHECK: define i32 @_Z2g9P2e9
+// CHECK: load i32* %x, align 4, !range !2
+
+enum e10 { e10_a = -16, e10_b = 32};
+e10 g10(e10 *x) {
+  return *x;
+}
+// CHECK: define i32 @_Z3g10P3e10
+// CHECK: load i32* %x, align 4, !range !6
+
+enum e11 {e11_a = 4294967296 };
+enum e11 g11(enum e11 *x) {
+  return *x;
+}
+// CHECK: define i64 @_Z3g11P3e11
+// CHECK: load i64* %x, align {{[84]}}, !range !7
+
+enum e12 {e12_a = 9223372036854775808U };
+enum e12 g12(enum e12 *x) {
+  return *x;
+}
+// CHECK: define i64 @_Z3g12P3e12
+// CHECK: load i64* %x, align {{[84]}}
+// CHECK-NOT: range
+// CHECK: ret
+
+enum e13 : char {e13_a = -1 };
+e13 g13(e13 *x) {
+  return *x;
+}
+// CHECK: define signext i8 @_Z3g13P3e13
+// CHECK: load i8* %x, align 1
+// CHECK-NOT: range
+// CHECK: ret
+
+enum class e14 {e14_a = 1};
+e14 g14(e14 *x) {
+  return *x;
+}
+// CHECK: define i32 @_Z3g14P3e14
+// CHECK: load i32* %x, align 4
+// CHECK-NOT: range
+// CHECK: ret
+
+enum e15 { e15_a = 2147483648 };
+e15 g15(e15 *x) {
+  return *x;
+}
+// CHECK: define i32 @_Z3g15P3e15
+// CHECK: load i32* %x, align 4
+// CHECK-NOT: range
+// CHECK: ret
+
+enum e16 { e16_a = -2147483648 };
+e16 g16(e16 *x) {
+  return *x;
+}
+// CHECK: define i32 @_Z3g16P3e16
+// CHECK: load i32* %x, align 4
+// CHECK-NOT: range
+// CHECK: ret
+
+
+// CHECK: !0 = metadata !{i8 0, i8 2}
+// CHECK: !1 = metadata !{i32 0, i32 1}
+// CHECK: !2 = metadata !{i32 0, i32 32}
+// CHECK: !3 = metadata !{i32 -16, i32 16}
+// CHECK: !4 = metadata !{i32 -32, i32 32}
+// CHECK: !5 = metadata !{i32 -1, i32 1}
+// CHECK: !6 = metadata !{i32 -64, i32 64}
+// CHECK: !7 = metadata !{i64 0, i64 8589934592}