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Remap ssa RealPredicate to llvm RealPredicate

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to avoid relying on the discriminant of the former for FFI purposes
This commit is contained in:
Tomasz Miąsko 2021-10-12 00:00:00 +00:00
parent ffdf18d144
commit ce7713d6b4
2 changed files with 28 additions and 0 deletions
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1
compiler/rustc_codegen_llvm/src/builder.rs
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@ -828,6 +828,7 @@ fn icmp(&mut self, op: IntPredicate, lhs: &'ll Value, rhs: &'ll Value) -> &'ll V
}
fn fcmp(&mut self, op: RealPredicate, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
let op = llvm::RealPredicate::from_generic(op);
unsafe { llvm::LLVMBuildFCmp(self.llbuilder, op as c_uint, lhs, rhs, UNNAMED) }
}

27
compiler/rustc_codegen_llvm/src/llvm/ffi.rs
View File

@ -223,6 +223,33 @@ pub enum RealPredicate {
RealPredicateTrue = 15,
}
impl RealPredicate {
pub fn from_generic(realp: rustc_codegen_ssa::common::RealPredicate) -> Self {
match realp {
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)]