diff options
Diffstat (limited to 'compiler/rustc_codegen_ssa/src/mir/rvalue.rs')
| -rw-r--r-- | compiler/rustc_codegen_ssa/src/mir/rvalue.rs | 22 |
1 files changed, 13 insertions, 9 deletions
diff --git a/compiler/rustc_codegen_ssa/src/mir/rvalue.rs b/compiler/rustc_codegen_ssa/src/mir/rvalue.rs index 3b7fefee80a..4c5b183cfe9 100644 --- a/compiler/rustc_codegen_ssa/src/mir/rvalue.rs +++ b/compiler/rustc_codegen_ssa/src/mir/rvalue.rs @@ -435,18 +435,22 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> { scalar: abi::Scalar, backend_ty: Bx::Type, ) { - if matches!(self.cx.sess().opts.optimize, OptLevel::No) - // For now, the critical niches are all over `Int`eger values. - // Should floating-point values or pointers ever get more complex - // niches, then this code will probably want to handle them too. - || !matches!(scalar.primitive(), abi::Primitive::Int(..)) - || scalar.is_always_valid(self.cx) - { + if matches!(self.cx.sess().opts.optimize, OptLevel::No) || scalar.is_always_valid(self.cx) { return; } - let range = scalar.valid_range(self.cx); - bx.assume_integer_range(imm, backend_ty, range); + match scalar.primitive() { + abi::Primitive::Int(..) => { + let range = scalar.valid_range(self.cx); + bx.assume_integer_range(imm, backend_ty, range); + } + abi::Primitive::Pointer(abi::AddressSpace::DATA) + if !scalar.valid_range(self.cx).contains(0) => + { + bx.assume_nonnull(imm); + } + abi::Primitive::Pointer(..) | abi::Primitive::Float(..) => {} + } } pub(crate) fn codegen_rvalue_unsized( |