Skip to content

[RISCV] Set __GCC_CONSTRUCTIVE_SIZE/__GCC_DESTRUCTIVE_SIZE to 64 #162986

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
wangpc-pp merged 5 commits into from
Nov 11, 2025
Merged

[RISCV] Set __GCC_CONSTRUCTIVE_SIZE/__GCC_DESTRUCTIVE_SIZE to 64 #162986

Show file tree
Hide file tree
Changes from 4 commits
Commits
Show all changes
5 commits
Select commit Hold shift + click to select a range
2dc5e8e
[RISCV] Set __GCC_CONSTRUCTIVE_SIZE/__GCC_DESTRUCTIVE_SIZE to 64 for …
wangpc-pp Oct 11, 2025
e0f0733
Add new line at the EOF
wangpc-pp Oct 11, 2025
d233bbd
Change to 64 for RV32/RV64
wangpc-pp Nov 6, 2025
a62882a
Add ReleaseNotes
wangpc-pp Nov 7, 2025
e1a5a16
Add clang links and remove riscv-registered-target
wangpc-pp Nov 8, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
2 changes: 2 additions & 0 deletions clang/docs/ReleaseNotes.rst
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -580,6 +580,8 @@ RISC-V Support
- Add `-march=unset` to clear any previous `-march=` value. This ISA string will
be computed from `-mcpu` or the platform default.

- `__GCC_CONSTRUCTIVE_SIZE` and `__GCC_DESTRUCTIVE_SIZE` are changed to 64.

CUDA/HIP Language Changes
^^^^^^^^^^^^^^^^^^^^^^^^^

Expand Down
2 changes: 1 addition & 1 deletion clang/lib/Basic/Targets/RISCV.h
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -126,7 +126,7 @@ class RISCVTargetInfo : public TargetInfo {
llvm::APInt getFMVPriority(ArrayRef<StringRef> Features) const override;

std::pair<unsigned, unsigned> hardwareInterferenceSizes() const override {
return std::make_pair(32, 32);
return std::make_pair(64, 64);
}

bool supportsCpuSupports() const override { return getTriple().isOSLinux(); }
Expand Down
12 changes: 12 additions & 0 deletions clang/test/Preprocessor/init-riscv.c
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,12 @@
// REQUIRES: riscv-registered-target

// RUN: %clang_cc1 -E -dM -triple=riscv32 < /dev/null | \
// RUN: FileCheck -match-full-lines -check-prefixes=RV32 %s
// RUN: %clang_cc1 -E -dM -triple=riscv64 < /dev/null | \
// RUN: FileCheck -match-full-lines -check-prefixes=RV64 %s

// RV32: #define __GCC_CONSTRUCTIVE_SIZE 64
// RV32: #define __GCC_DESTRUCTIVE_SIZE 64

// RV64: #define __GCC_CONSTRUCTIVE_SIZE 64
// RV64: #define __GCC_DESTRUCTIVE_SIZE 64