In PR #79382, I need to add a new type that derives from
ConstantArrayType. This means that ConstantArrayType can no longer use
`llvm::TrailingObjects` to store the trailing optional Expr*.
This change refactors ConstantArrayType to store a 60-bit integer and
4-bits for the integer size in bytes. This replaces the APInt field
previously in the type but preserves enough information to recreate it
where needed.
To reduce the number of places where the APInt is re-constructed I've
also added some helper methods to the ConstantArrayType to allow some
common use cases that operate on either the stored small integer or the
APInt as appropriate.
Resolves#85124.
In g++, empty unions are not ignored like empty structs when flattening
structs to examine whether the structs can be passed via FARs in C++.
This patch aligns clang++ with g++.
Fix https://github.com/llvm/llvm-project/issues/70890.
How empty structs (not as fields of container struct) are passed in C++
is not explicitly documented in psABI. However, this patch fixes the
mismatch with g++.
Note that the unnamed bitfield case `struct { int : 1; }` in C is also
fixed. Previously clang regards it as an empty struct and then ignores
it when passing. Now size of the struct is counted; since it's size is
not 0, clang will not ignore it even in C.
While https://reviews.llvm.org/D156116 fixed the handling of empty
struct when considering eligibility of the container struct for the FP
calling convention ('flattening'), this patch fixes the handling of
passing the empty struct itself.
Fix https://github.com/llvm/llvm-project/issues/70319
GCC doesn't ignore non-zero-length array of empty structures in C++
while clang does. What this patch did is to match GCC's behaviour
although this rule is not documented in psABI.
Similar to D142327 for RISCV.
Reviewed By: xry111, xen0n
Differential Revision: https://reviews.llvm.org/D156116
GCC doesn't ignore non-zero-length array of empty structures in C++
while clang does. What this patch did is to match GCC's behaviour
although this rule is not documented in psABI.
Similar to D142327 for RISCV.
Reviewed By: xry111, xen0n
Differential Revision: https://reviews.llvm.org/D156116
Partial progress towards replacing `CreateElementBitCast`, as it no
longer does what its name suggests. Either replace its uses with
`Address::withElementType()`, or remove them if no longer needed.
Reviewed By: barannikov88, nikic
Differential Revision: https://reviews.llvm.org/D153314
This commit breaks up CodeGen/TargetInfo.cpp into a set of *.cpp files,
one file per target. There are no functional changes, mostly just code moving.
Non-code-moving changes are:
* A virtual destructor has been added to DefaultABIInfo to pin the vtable to a cpp file.
* A few methods of ABIInfo and DefaultABIInfo were split into declaration + definition
in order to reduce the number of transitive includes.
* Several functions that used to be static have been placed in clang::CodeGen
namespace so that they can be accessed from other cpp files.
RFC: https://discourse.llvm.org/t/rfc-splitting-clangs-targetinfo-cpp/69883
Reviewed By: efriedma
Differential Revision: https://reviews.llvm.org/D148094
