---

yaml
---
r: 212299
b: refs/heads/auto
c: ce32f64
h: refs/heads/master
i:
  212297: 20f62c0
  212295: 67b6348
v: v3

Author: lucab

[refs]

@@ -10,7 +10,7 @@ refs/tags/release-0.3: b5f0d0f648d9a6153664837026ba1be43d3e2503
 refs/tags/release-0.3.1: 495bae036dfe5ec6ceafd3312b4dca48741e845b
 refs/tags/release-0.4: e828ea2080499553b97dfe33b3f4d472b4562ad7
 refs/tags/release-0.5: 7e3bcfbf21278251ee936ad53e92e9b719702d73
-refs/heads/auto: 1be9e6f055fbcd6bfcf0a1f9e9ef0e86abe54f02
+refs/heads/auto: ce32f6412e1937c0844aa48e5b4e876b96dcd66d
 refs/heads/servo: af82457af293e2a842ba6b7759b70288da276167
 refs/tags/release-0.6: b4ebcfa1812664df5e142f0134a5faea3918544c
 refs/tags/0.1: b19db808c2793fe2976759b85a355c3ad8c8b336

branches/auto/src/librustc_llvm/lib.rs

@@ -1772,6 +1772,8 @@ extern {
                          -> ValueRef;
 
     pub fn LLVMRustDebugMetadataVersion() -> u32;
+    pub fn LLVMVersionMajor() -> u32;
+    pub fn LLVMVersionMinor() -> u32;
 
     pub fn LLVMRustAddModuleFlag(M: ModuleRef,
                                  name: *const c_char,

branches/auto/src/librustc_trans/trans/context.rs

@@ -870,6 +870,11 @@ fn declare_intrinsic(ccx: &CrateContext, key: & &'static str) -> Option<ValueRef
     ifn!("llvm.trunc.f32", fn(t_f32) -> t_f32);
     ifn!("llvm.trunc.f64", fn(t_f64) -> t_f64);
 
+    ifn!("llvm.copysign.f32", fn(t_f32, t_f32) -> t_f32);
+    ifn!("llvm.copysign.f64", fn(t_f64, t_f64) -> t_f64);
+    ifn!("llvm.round.f32", fn(t_f32) -> t_f32);
+    ifn!("llvm.round.f64", fn(t_f64) -> t_f64);
+
     ifn!("llvm.rint.f32", fn(t_f32) -> t_f32);
     ifn!("llvm.rint.f64", fn(t_f64) -> t_f64);
     ifn!("llvm.nearbyint.f32", fn(t_f32) -> t_f32);
@@ -931,20 +936,22 @@ fn declare_intrinsic(ccx: &CrateContext, key: & &'static str) -> Option<ValueRef
     ifn!("llvm.assume", fn(i1) -> void);
 
     // Some intrinsics were introduced in later versions of LLVM, but they have
-    // fallbacks in libc or libm and such. Currently, all of these intrinsics
-    // were introduced in LLVM 3.4, so we case on that.
+    // fallbacks in libc or libm and such.
     macro_rules! compatible_ifn {
-        ($name:expr, $cname:ident ($($arg:expr),*) -> $ret:expr) => (
-            ifn!($name, fn($($arg),*) -> $ret);
+        ($name:expr, $cname:ident ($($arg:expr),*) -> $ret:expr, $llvm_version:expr) => (
+            if unsafe { llvm::LLVMVersionMinor() >= $llvm_version } {
+                // The `if key == $name` is already in ifn!
+                ifn!($name, fn($($arg),*) -> $ret);
+            } else if *key == $name {
+                let f = declare::declare_cfn(ccx, stringify!($cname),
+                                             Type::func(&[$($arg),*], &$ret),
+                                             ty::mk_nil(ccx.tcx()));
+                ccx.intrinsics().borrow_mut().insert($name, f.clone());
+                return Some(f);
+            }
         )
     }
 
-    compatible_ifn!("llvm.copysign.f32", copysignf(t_f32, t_f32) -> t_f32);
-    compatible_ifn!("llvm.copysign.f64", copysign(t_f64, t_f64) -> t_f64);
-    compatible_ifn!("llvm.round.f32", roundf(t_f32) -> t_f32);
-    compatible_ifn!("llvm.round.f64", round(t_f64) -> t_f64);
-
-
     if ccx.sess().opts.debuginfo != NoDebugInfo {
         ifn!("llvm.dbg.declare", fn(Type::metadata(ccx), Type::metadata(ccx)) -> void);
         ifn!("llvm.dbg.value", fn(Type::metadata(ccx), t_i64, Type::metadata(ccx)) -> void);

branches/auto/src/rustllvm/RustWrapper.cpp

@@ -237,6 +237,14 @@ extern "C" uint32_t LLVMRustDebugMetadataVersion() {
     return DEBUG_METADATA_VERSION;
 }
 
+extern "C" uint32_t LLVMVersionMinor() {
+  return LLVM_VERSION_MINOR;
+}
+
+extern "C" uint32_t LLVMVersionMajor() {
+  return LLVM_VERSION_MAJOR;
+}
+
 extern "C" void LLVMRustAddModuleFlag(LLVMModuleRef M,
                                       const char *name,
                                       uint32_t value) {