CHECK-LABEL-ify some code gen tests to improve diagnostic experience when tests fail.

llvm-svn: 188447
diff --git a/clang/test/CodeGenCXX/pr12251.cpp b/clang/test/CodeGenCXX/pr12251.cpp
index 261c558..bb1c82d 100644
--- a/clang/test/CodeGenCXX/pr12251.cpp
+++ b/clang/test/CodeGenCXX/pr12251.cpp
@@ -4,12 +4,12 @@
 bool f(bool *x) {
   return *x;
 }
-// CHECK: define zeroext i1 @_Z1fPb
+// CHECK-LABEL: define zeroext i1 @_Z1fPb
 // CHECK: load i8* %{{[^ ]*}}, align 1, !range [[RANGE_i8_0_2:![^ ]*]]
 
 // 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-LABEL: define zeroext i1 @_Z1fPb
 // NO-STRICT-ENUMS: load i8* %{{[^ ]*}}, align 1, !range
 // NO-STRICT-ENUMS-NOT: !range
 
@@ -17,84 +17,84 @@
 e1 g1(e1 *x) {
   return *x;
 }
-// CHECK: define i32 @_Z2g1P2e1
+// CHECK-LABEL: define i32 @_Z2g1P2e1
 // CHECK: load i32* %x, align 4, !range [[RANGE_i32_0_1:![^ ]*]]
 
 enum e2 { e2_a = 0 };
 e2 g2(e2 *x) {
   return *x;
 }
-// CHECK: define i32 @_Z2g2P2e2
+// CHECK-LABEL: define i32 @_Z2g2P2e2
 // CHECK: load i32* %x, align 4, !range [[RANGE_i32_0_1]]
 
 enum e3 { e3_a = 16 };
 e3 g3(e3 *x) {
   return *x;
 }
-// CHECK: define i32 @_Z2g3P2e3
+// CHECK-LABEL: define i32 @_Z2g3P2e3
 // CHECK: load i32* %x, align 4, !range [[RANGE_i32_0_32:![^ ]*]]
 
 enum e4 { e4_a = -16};
 e4 g4(e4 *x) {
   return *x;
 }
-// CHECK: define i32 @_Z2g4P2e4
+// CHECK-LABEL: define i32 @_Z2g4P2e4
 // CHECK: load i32* %x, align 4, !range [[RANGE_i32_m16_16:![^ ]*]]
 
 enum e5 { e5_a = -16, e5_b = 16};
 e5 g5(e5 *x) {
   return *x;
 }
-// CHECK: define i32 @_Z2g5P2e5
+// CHECK-LABEL: define i32 @_Z2g5P2e5
 // CHECK: load i32* %x, align 4, !range [[RANGE_i32_m32_32:![^ ]*]]
 
 enum e6 { e6_a = -1 };
 e6 g6(e6 *x) {
   return *x;
 }
-// CHECK: define i32 @_Z2g6P2e6
+// CHECK-LABEL: define i32 @_Z2g6P2e6
 // CHECK: load i32* %x, align 4, !range [[RANGE_i32_m1_1:![^ ]*]]
 
 enum e7 { e7_a = -16, e7_b = 2};
 e7 g7(e7 *x) {
   return *x;
 }
-// CHECK: define i32 @_Z2g7P2e7
+// CHECK-LABEL: define i32 @_Z2g7P2e7
 // CHECK: load i32* %x, align 4, !range [[RANGE_i32_m16_16]]
 
 enum e8 { e8_a = -17};
 e8 g8(e8 *x) {
   return *x;
 }
-// CHECK: define i32 @_Z2g8P2e8
+// CHECK-LABEL: define i32 @_Z2g8P2e8
 // CHECK: load i32* %x, align 4, !range [[RANGE_i32_m32_32:![^ ]*]]
 
 enum e9 { e9_a = 17};
 e9 g9(e9 *x) {
   return *x;
 }
-// CHECK: define i32 @_Z2g9P2e9
+// CHECK-LABEL: define i32 @_Z2g9P2e9
 // CHECK: load i32* %x, align 4, !range [[RANGE_i32_0_32]]
 
 enum e10 { e10_a = -16, e10_b = 32};
 e10 g10(e10 *x) {
   return *x;
 }
-// CHECK: define i32 @_Z3g10P3e10
+// CHECK-LABEL: define i32 @_Z3g10P3e10
 // CHECK: load i32* %x, align 4, !range [[RANGE_i32_m64_64:![^ ]*]]
 
 enum e11 {e11_a = 4294967296 };
 enum e11 g11(enum e11 *x) {
   return *x;
 }
-// CHECK: define i64 @_Z3g11P3e11
+// CHECK-LABEL: define i64 @_Z3g11P3e11
 // CHECK: load i64* %x, align {{[84]}}, !range [[RANGE_i64_0_2pow33:![^ ]*]]
 
 enum e12 {e12_a = 9223372036854775808U };
 enum e12 g12(enum e12 *x) {
   return *x;
 }
-// CHECK: define i64 @_Z3g12P3e12
+// CHECK-LABEL: define i64 @_Z3g12P3e12
 // CHECK: load i64* %x, align {{[84]}}
 // CHECK-NOT: range
 // CHECK: ret
@@ -103,7 +103,7 @@
 e13 g13(e13 *x) {
   return *x;
 }
-// CHECK: define signext i8 @_Z3g13P3e13
+// CHECK-LABEL: define signext i8 @_Z3g13P3e13
 // CHECK: load i8* %x, align 1
 // CHECK-NOT: range
 // CHECK: ret
@@ -112,7 +112,7 @@
 e14 g14(e14 *x) {
   return *x;
 }
-// CHECK: define i32 @_Z3g14P3e14
+// CHECK-LABEL: define i32 @_Z3g14P3e14
 // CHECK: load i32* %x, align 4
 // CHECK-NOT: range
 // CHECK: ret
@@ -121,7 +121,7 @@
 e15 g15(e15 *x) {
   return *x;
 }
-// CHECK: define i32 @_Z3g15P3e15
+// CHECK-LABEL: define i32 @_Z3g15P3e15
 // CHECK: load i32* %x, align 4
 // CHECK-NOT: range
 // CHECK: ret
@@ -130,7 +130,7 @@
 e16 g16(e16 *x) {
   return *x;
 }
-// CHECK: define i32 @_Z3g16P3e16
+// CHECK-LABEL: define i32 @_Z3g16P3e16
 // CHECK: load i32* %x, align 4
 // CHECK-NOT: range
 // CHECK: ret