From c70d633e94dd52d036ef5808ab7dc49a72506492 Mon Sep 17 00:00:00 2001
From: Jorge Aparicio <japaricious@gmail.com>
Date: Sat, 27 Aug 2016 17:12:37 -0500
Subject: [PATCH 1/2] rustbuild: skip filecheck check if codegen tests are
 disabled

to match the behavior of the old Makefile-based build system

closes #35752
---
 src/bootstrap/config.rs | 3 +++
 src/bootstrap/sanity.rs | 2 +-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/bootstrap/config.rs b/src/bootstrap/config.rs
index aafbf68d1b7b6..682a6f74126a8 100644
--- a/src/bootstrap/config.rs
+++ b/src/bootstrap/config.rs
@@ -78,6 +78,7 @@ pub struct Config {
     pub channel: String,
     pub musl_root: Option<PathBuf>,
     pub prefix: Option<String>,
+    pub codegen_tests: bool,
 }
 
 /// Per-target configuration stored in the global configuration structure.
@@ -169,6 +170,7 @@ impl Config {
         config.rust_codegen_units = 1;
         config.build = build.to_string();
         config.channel = "dev".to_string();
+        config.codegen_tests = true;
 
         let toml = file.map(|file| {
             let mut f = t!(File::open(&file));
@@ -322,6 +324,7 @@ impl Config {
                 ("DEBUGINFO_TESTS", self.rust_debuginfo_tests),
                 ("LOCAL_REBUILD", self.local_rebuild),
                 ("NINJA", self.ninja),
+                ("CODEGEN_TESTS", self.codegen_tests),
             }
 
             match key {
diff --git a/src/bootstrap/sanity.rs b/src/bootstrap/sanity.rs
index d6ac3ef6c9c50..c0d303c0ea9ae 100644
--- a/src/bootstrap/sanity.rs
+++ b/src/bootstrap/sanity.rs
@@ -89,7 +89,7 @@ pub fn check(build: &mut Build) {
 
     // Externally configured LLVM requires FileCheck to exist
     let filecheck = build.llvm_filecheck(&build.config.build);
-    if !filecheck.starts_with(&build.out) && !filecheck.exists() {
+    if !filecheck.starts_with(&build.out) && !filecheck.exists() && build.config.codegen_tests {
         panic!("filecheck executable {:?} does not exist", filecheck);
     }
 

From b8ebc1347c0f69c833b4fa908bcc43eb47949efa Mon Sep 17 00:00:00 2001
From: Jorge Aparicio <japaricious@gmail.com>
Date: Sat, 27 Aug 2016 22:14:29 -0500
Subject: [PATCH 2/2] don't run codegen tests when they have been disabled

---
 src/bootstrap/lib.rs | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/bootstrap/lib.rs b/src/bootstrap/lib.rs
index 9eacb5e3924fa..9f0efa8289d48 100644
--- a/src/bootstrap/lib.rs
+++ b/src/bootstrap/lib.rs
@@ -390,8 +390,10 @@ impl Build {
                                        "mir-opt", "mir-opt");
                 }
                 CheckCodegen { compiler } => {
-                    check::compiletest(self, &compiler, target.target,
-                                       "codegen", "codegen");
+                    if self.config.codegen_tests {
+                        check::compiletest(self, &compiler, target.target,
+                                           "codegen", "codegen");
+                    }
                 }
                 CheckCodegenUnits { compiler } => {
                     check::compiletest(self, &compiler, target.target,