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Auto merge of #105545 - erikdesjardins:ptrclean, r=bjorn3

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cleanup: remove pointee types

This can't be merged until the oldest LLVM version we support uses opaque pointers, which will be the case after #114148. (Also note `-Cllvm-args="-opaque-pointers=0"` can technically be used in LLVM 15, though I don't think we should support that configuration.)

I initially hoped this would provide some minor perf win, but in https://github.com/rust-lang/rust/pull/105412#issuecomment-1341224450 it had very little impact, so this is only valuable as a cleanup.

As a followup, this will enable #96242 to be resolved.

r? `@ghost`

`@rustbot` label S-blocked
This commit is contained in:
bors 2023-08-01 19:44:17 +00:00
commit abd3637e42
32 changed files with 227 additions and 584 deletions
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7
compiler/rustc_codegen_llvm/src/back/write.rs
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@ -4,7 +4,6 @@ use crate::back::profiling::{
};
use crate::base;
use crate::common;
use crate::consts;
use crate::errors::{
CopyBitcode, FromLlvmDiag, FromLlvmOptimizationDiag, LlvmError, WithLlvmError, WriteBytecode,
};
@ -992,7 +991,7 @@ fn create_msvc_imps(
let prefix = if cgcx.target_arch == "x86" { "\x01__imp__" } else { "\x01__imp_" };
unsafe {
let i8p_ty = Type::i8p_llcx(llcx);
let ptr_ty = Type::ptr_llcx(llcx);
let globals = base::iter_globals(llmod)
.filter(|&val| {
llvm::LLVMRustGetLinkage(val) == llvm::Linkage::ExternalLinkage
@ -1012,8 +1011,8 @@ fn create_msvc_imps(
.collect::<Vec<_>>();
for (imp_name, val) in globals {
let imp = llvm::LLVMAddGlobal(llmod, i8p_ty, imp_name.as_ptr().cast());
llvm::LLVMSetInitializer(imp, consts::ptrcast(val, i8p_ty));
let imp = llvm::LLVMAddGlobal(llmod, ptr_ty, imp_name.as_ptr().cast());
llvm::LLVMSetInitializer(imp, val);
llvm::LLVMRustSetLinkage(imp, llvm::Linkage::ExternalLinkage);
}
}