Remove (lots of) dead code

Found with https://github.com/est31/warnalyzer.

Dubious changes:
- Is anyone else using rustc_apfloat? I feel weird completely deleting
  x87 support.
- Maybe some of the dead code in rustc_data_structures, in case someone
  wants to use it in the future?
- Don't change rustc_serialize

  I plan to scrap most of the json module in the near future (see
  https://github.com/rust-lang/compiler-team/issues/418) and fixing the
  tests needed more work than I expected.

TODO: check if any of the comments on the deleted code should be kept.

1 files changed, 1 insertions, 87 deletions

diff --git a/compiler/rustc_codegen_llvm/src/llvm/ffi.rs b/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
index 82cd1be3b3b..4a1b76079b3 100644
--- a/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
+++ b/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
@@ -190,33 +190,6 @@ pub enum RealPredicate {
     RealPredicateTrue = 15,
 }
 
-impl RealPredicate {
-    pub fn from_generic(realpred: rustc_codegen_ssa::common::RealPredicate) -> Self {
-        match realpred {
-            rustc_codegen_ssa::common::RealPredicate::RealPredicateFalse => {
-                RealPredicate::RealPredicateFalse
-            }
-            rustc_codegen_ssa::common::RealPredicate::RealOEQ => RealPredicate::RealOEQ,
-            rustc_codegen_ssa::common::RealPredicate::RealOGT => RealPredicate::RealOGT,
-            rustc_codegen_ssa::common::RealPredicate::RealOGE => RealPredicate::RealOGE,
-            rustc_codegen_ssa::common::RealPredicate::RealOLT => RealPredicate::RealOLT,
-            rustc_codegen_ssa::common::RealPredicate::RealOLE => RealPredicate::RealOLE,
-            rustc_codegen_ssa::common::RealPredicate::RealONE => RealPredicate::RealONE,
-            rustc_codegen_ssa::common::RealPredicate::RealORD => RealPredicate::RealORD,
-            rustc_codegen_ssa::common::RealPredicate::RealUNO => RealPredicate::RealUNO,
-            rustc_codegen_ssa::common::RealPredicate::RealUEQ => RealPredicate::RealUEQ,
-            rustc_codegen_ssa::common::RealPredicate::RealUGT => RealPredicate::RealUGT,
-            rustc_codegen_ssa::common::RealPredicate::RealUGE => RealPredicate::RealUGE,
-            rustc_codegen_ssa::common::RealPredicate::RealULT => RealPredicate::RealULT,
-            rustc_codegen_ssa::common::RealPredicate::RealULE => RealPredicate::RealULE,
-            rustc_codegen_ssa::common::RealPredicate::RealUNE => RealPredicate::RealUNE,
-            rustc_codegen_ssa::common::RealPredicate::RealPredicateTrue => {
-                RealPredicate::RealPredicateTrue
-            }
-        }
-    }
-}
-
 /// LLVMTypeKind
 #[derive(Copy, Clone, PartialEq, Debug)]
 #[repr(C)]
@@ -711,7 +684,7 @@ pub mod coverageinfo {
     }
 
     impl CounterMappingRegion {
-        pub fn code_region(
+        crate fn code_region(
             counter: coverage_map::Counter,
             file_id: u32,
             start_line: u32,
@@ -730,65 +703,6 @@ pub mod coverageinfo {
                 kind: RegionKind::CodeRegion,
             }
         }
-
-        pub fn expansion_region(
-            file_id: u32,
-            expanded_file_id: u32,
-            start_line: u32,
-            start_col: u32,
-            end_line: u32,
-            end_col: u32,
-        ) -> Self {
-            Self {
-                counter: coverage_map::Counter::zero(),
-                file_id,
-                expanded_file_id,
-                start_line,
-                start_col,
-                end_line,
-                end_col,
-                kind: RegionKind::ExpansionRegion,
-            }
-        }
-
-        pub fn skipped_region(
-            file_id: u32,
-            start_line: u32,
-            start_col: u32,
-            end_line: u32,
-            end_col: u32,
-        ) -> Self {
-            Self {
-                counter: coverage_map::Counter::zero(),
-                file_id,
-                expanded_file_id: 0,
-                start_line,
-                start_col,
-                end_line,
-                end_col,
-                kind: RegionKind::SkippedRegion,
-            }
-        }
-
-        pub fn gap_region(
-            counter: coverage_map::Counter,
-            file_id: u32,
-            start_line: u32,
-            start_col: u32,
-            end_line: u32,
-            end_col: u32,
-        ) -> Self {
-            Self {
-                counter,
-                file_id,
-                expanded_file_id: 0,
-                start_line,
-                start_col,
-                end_line,
-                end_col: ((1 as u32) << 31) | end_col,
-                kind: RegionKind::GapRegion,
-            }
-        }
     }
 }