bjoernager/rust
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Emit getelementptr inbounds nuw for pointer::add()

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This commit is contained in:
Nikita Popov 2025-02-19 11:06:11 +01:00
parent 5e9d8a7d55
commit 31cc4c074d
7 changed files with 55 additions and 15 deletions
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23
compiler/rustc_codegen_llvm/src/builder.rs
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@ -32,7 +32,9 @@ use crate::abi::FnAbiLlvmExt;
use crate::attributes;
use crate::common::Funclet;
use crate::context::{CodegenCx, SimpleCx};
use crate::llvm::{self, AtomicOrdering, AtomicRmwBinOp, BasicBlock, False, GEPNoWrapFlags, Metadata, True};
use crate::llvm::{
self, AtomicOrdering, AtomicRmwBinOp, BasicBlock, False, GEPNoWrapFlags, Metadata, True,
};
use crate::type_::Type;
use crate::type_of::LayoutLlvmExt;
use crate::value::Value;
@ -939,6 +941,25 @@ impl<'a, 'll, 'tcx> BuilderMethods<'a, 'tcx> for Builder<'a, 'll, 'tcx> {
}
}
fn inbounds_nuw_gep(
&mut self,
ty: &'ll Type,
ptr: &'ll Value,
indices: &[&'ll Value],
) -> &'ll Value {
unsafe {
llvm::LLVMBuildGEPWithNoWrapFlags(
self.llbuilder,
ty,
ptr,
indices.as_ptr(),
indices.len() as c_uint,
UNNAMED,
GEPNoWrapFlags::InBounds | GEPNoWrapFlags::NUW,
)
}
}
/* Casts */
fn trunc(&mut self, val: &'ll Value, dest_ty: &'ll Type) -> &'ll Value {
unsafe { llvm::LLVMBuildTrunc(self.llbuilder, val, dest_ty, UNNAMED) }