inore some codegen tests when debug assertions are enabled

.travis.yml

@@ -46,6 +46,8 @@ matrix:
     # slow to run.
 
     # OSX builders running tests, these run the full test suite.
+    # NO_DEBUG_ASSERTIONS=1 to make them go faster, but also do have some
+    # runners that run `//ignore-debug` tests.
     #
     # Note that the compiler is compiled to target 10.8 here because the Xcode
     # version that we're using, 8.2, cannot compile LLVM for OSX 10.7.

src/test/codegen/vec-clear.rs

@@ -8,6 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+// ignore-debug: the debug assertions get in the way
 // compile-flags: -O
 
 #![crate_type = "lib"]

src/test/codegen/vec-iter-collect-len.rs

@@ -8,6 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+// ignore-debug: the debug assertions get in the way
 // no-system-llvm
 // compile-flags: -O
 #![crate_type="lib"]

src/test/codegen/vec-optimizes-away.rs

@@ -8,6 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 //
+// ignore-debug: the debug assertions get in the way
 // no-system-llvm
 // compile-flags: -O
 #![crate_type="lib"]

src/tools/compiletest/src/header.rs

@@ -615,12 +615,14 @@ fn parse_cfg_name_directive(&self, line: &str, prefix: &str) -> bool {
                     common::DebugInfoLldb => name == "lldb",
                     common::Pretty => name == "pretty",
                     _ => false,
-                } || (self.target != self.host && name == "cross-compile") ||
+                } ||
+                (self.target != self.host && name == "cross-compile") ||
                 match self.compare_mode {
                     Some(CompareMode::Nll) => name == "compare-mode-nll",
                     Some(CompareMode::Polonius) => name == "compare-mode-polonius",
                     None => false,
-                }
+                } ||
+                (cfg!(debug_assertions) && name == "debug")
         } else {
             false
         }