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Prepare inbounds_gep for opaque pointers

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Implement inbounds_gep using LLVMBuildInBoundsGEP2 which takes an
explicit type argument instead of deriving it from a pointer type.
This commit is contained in:
Tomasz Miąsko 2021-08-01 00:00:00 +00:00
parent 4013e094f5
commit 77e5e17231
11 changed files with 61 additions and 22 deletions
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4
compiler/rustc_codegen_llvm/src/va_arg.rs
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@ -50,12 +50,12 @@ fn emit_direct_ptr_va_arg(
let aligned_size = size.align_to(slot_size).bytes() as i32;
let full_direct_size = bx.cx().const_i32(aligned_size);
let next = bx.inbounds_gep(addr, &[full_direct_size]);
let next = bx.inbounds_gep(bx.type_i8(), addr, &[full_direct_size]);
bx.store(next, va_list_addr, bx.tcx().data_layout.pointer_align.abi);
if size.bytes() < slot_size.bytes() && bx.tcx().sess.target.endian == Endian::Big {
let adjusted_size = bx.cx().const_i32((slot_size.bytes() - size.bytes()) as i32);
let adjusted = bx.inbounds_gep(addr, &[adjusted_size]);
let adjusted = bx.inbounds_gep(bx.type_i8(), addr, &[adjusted_size]);
(bx.bitcast(adjusted, bx.cx().type_ptr_to(llty)), addr_align)
} else {
(bx.bitcast(addr, bx.cx().type_ptr_to(llty)), addr_align)