Adjust test/CodeGenCXX/pr12251.cpp

InstCombine just got a bit smarter about checking known bits of returned
values, and because this test runs the optimizer, it requires an update. We
should really rewrite this test to directly check the IR output from CodeGen.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@217347 91177308-0d34-0410-b5e6-96231b3b80d8

test/CodeGenCXX/pr12251.cpp

@@ -18,14 +18,14 @@ e1 g1(e1 *x) {
   return *x;
 }
 // CHECK-LABEL: define i32 @_Z2g1P2e1
-// CHECK: load i32* %x, align 4, !range [[RANGE_i32_0_1:![^ ]*]]
+// CHECK: ret i32 0
 
 enum e2 { e2_a = 0 };
 e2 g2(e2 *x) {
   return *x;
 }
 // CHECK-LABEL: define i32 @_Z2g2P2e2
-// CHECK: load i32* %x, align 4, !range [[RANGE_i32_0_1]]
+// CHECK: ret i32 0
 
 enum e3 { e3_a = 16 };
 e3 g3(e3 *x) {
@@ -137,7 +137,6 @@ e16 g16(e16 *x) {
 
 
 // CHECK: [[RANGE_i8_0_2]] = metadata !{i8 0, i8 2}
-// CHECK: [[RANGE_i32_0_1]] = metadata !{i32 0, i32 1}
 // CHECK: [[RANGE_i32_0_32]] = metadata !{i32 0, i32 32}
 // CHECK: [[RANGE_i32_m16_16]] = metadata !{i32 -16, i32 16}
 // CHECK: [[RANGE_i32_m32_32]] = metadata !{i32 -32, i32 32}