specs: Set max-atomic-width to 16

Rahix · Sep 15, 2024 · b631bab · b631bab
1 parent 416bd01
commit b631bab
Show file tree

Hide file tree

Showing 17 changed files with 19 additions and 17 deletions.
diff --git a/avr-specs/avr-atmega1280.json b/avr-specs/avr-atmega1280.json
@@ -17,7 +17,7 @@
  "linker": "avr-gcc",
  "linker-flavor": "gnu-cc",
  "llvm-target": "avr-unknown-unknown",
- "max-atomic-width": 8,
+ "max-atomic-width": 16,
  "metadata": {
  "description": null,
  "host_tools": null,

diff --git a/avr-specs/avr-atmega1284p.json b/avr-specs/avr-atmega1284p.json
@@ -17,7 +17,7 @@
  "linker": "avr-gcc",
  "linker-flavor": "gnu-cc",
  "llvm-target": "avr-unknown-unknown",
- "max-atomic-width": 8,
+ "max-atomic-width": 16,
  "metadata": {
  "description": null,
  "host_tools": null,

diff --git a/avr-specs/avr-atmega128a.json b/avr-specs/avr-atmega128a.json
@@ -17,7 +17,7 @@
  "linker": "avr-gcc",
  "linker-flavor": "gnu-cc",
  "llvm-target": "avr-unknown-unknown",
- "max-atomic-width": 8,
+ "max-atomic-width": 16,
  "metadata": {
  "description": null,
  "host_tools": null,

diff --git a/avr-specs/avr-atmega164pa.json b/avr-specs/avr-atmega164pa.json
@@ -17,7 +17,7 @@
  "linker": "avr-gcc",
  "linker-flavor": "gnu-cc",
  "llvm-target": "avr-unknown-unknown",
- "max-atomic-width": 8,
+ "max-atomic-width": 16,
  "metadata": {
  "description": null,
  "host_tools": null,

diff --git a/avr-specs/avr-atmega168.json b/avr-specs/avr-atmega168.json
@@ -17,7 +17,7 @@
  "linker": "avr-gcc",
  "linker-flavor": "gnu-cc",
  "llvm-target": "avr-unknown-unknown",
- "max-atomic-width": 8,
+ "max-atomic-width": 16,
  "metadata": {
  "description": null,
  "host_tools": null,

diff --git a/avr-specs/avr-atmega2560.json b/avr-specs/avr-atmega2560.json
@@ -17,7 +17,7 @@
  "linker": "avr-gcc",
  "linker-flavor": "gnu-cc",
  "llvm-target": "avr-unknown-unknown",
- "max-atomic-width": 8,
+ "max-atomic-width": 16,
  "metadata": {
  "description": null,
  "host_tools": null,

diff --git a/avr-specs/avr-atmega328.json b/avr-specs/avr-atmega328.json
@@ -17,7 +17,7 @@
  "linker": "avr-gcc",
  "linker-flavor": "gnu-cc",
  "llvm-target": "avr-unknown-unknown",
- "max-atomic-width": 8,
+ "max-atomic-width": 16,
  "metadata": {
  "description": null,
  "host_tools": null,

diff --git a/avr-specs/avr-atmega328p.json b/avr-specs/avr-atmega328p.json
@@ -17,7 +17,7 @@
  "linker": "avr-gcc",
  "linker-flavor": "gnu-cc",
  "llvm-target": "avr-unknown-unknown",
- "max-atomic-width": 8,
+ "max-atomic-width": 16,
  "metadata": {
  "description": null,
  "host_tools": null,

diff --git a/avr-specs/avr-atmega32a.json b/avr-specs/avr-atmega32a.json
@@ -17,7 +17,7 @@
  "linker": "avr-gcc",
  "linker-flavor": "gnu-cc",
  "llvm-target": "avr-unknown-unknown",
- "max-atomic-width": 8,
+ "max-atomic-width": 16,
  "metadata": {
  "description": null,
  "host_tools": null,

diff --git a/avr-specs/avr-atmega32u4.json b/avr-specs/avr-atmega32u4.json
@@ -17,7 +17,7 @@
  "linker": "avr-gcc",
  "linker-flavor": "gnu-cc",
  "llvm-target": "avr-unknown-unknown",
- "max-atomic-width": 8,
+ "max-atomic-width": 16,
  "metadata": {
  "description": null,
  "host_tools": null,

diff --git a/avr-specs/avr-atmega48p.json b/avr-specs/avr-atmega48p.json
@@ -17,7 +17,7 @@
  "linker": "avr-gcc",
  "linker-flavor": "gnu-cc",
  "llvm-target": "avr-unknown-unknown",
- "max-atomic-width": 8,
+ "max-atomic-width": 16,
  "metadata": {
  "description": null,
  "host_tools": null,

diff --git a/avr-specs/avr-atmega8.json b/avr-specs/avr-atmega8.json
@@ -17,7 +17,7 @@
  "linker": "avr-gcc",
  "linker-flavor": "gnu-cc",
  "llvm-target": "avr-unknown-unknown",
- "max-atomic-width": 8,
+ "max-atomic-width": 16,
  "metadata": {
  "description": null,
  "host_tools": null,

diff --git a/avr-specs/avr-attiny167.json b/avr-specs/avr-attiny167.json
@@ -17,7 +17,7 @@
  "linker": "avr-gcc",
  "linker-flavor": "gnu-cc",
  "llvm-target": "avr-unknown-unknown",
- "max-atomic-width": 8,
+ "max-atomic-width": 16,
  "metadata": {
  "description": null,
  "host_tools": null,

diff --git a/avr-specs/avr-attiny2313.json b/avr-specs/avr-attiny2313.json
@@ -17,7 +17,7 @@
  "linker": "avr-gcc",
  "linker-flavor": "gnu-cc",
  "llvm-target": "avr-unknown-unknown",
- "max-atomic-width": 8,
+ "max-atomic-width": 16,
  "metadata": {
  "description": null,
  "host_tools": null,

diff --git a/avr-specs/avr-attiny85.json b/avr-specs/avr-attiny85.json
@@ -17,7 +17,7 @@
  "linker": "avr-gcc",
  "linker-flavor": "gnu-cc",
  "llvm-target": "avr-unknown-unknown",
- "max-atomic-width": 8,
+ "max-atomic-width": 16,
  "metadata": {
  "description": null,
  "host_tools": null,

diff --git a/avr-specs/avr-attiny88.json b/avr-specs/avr-attiny88.json
@@ -17,7 +17,7 @@
  "linker": "avr-gcc",
  "linker-flavor": "gnu-cc",
  "llvm-target": "avr-unknown-unknown",
- "max-atomic-width": 8,
+ "max-atomic-width": 16,
  "metadata": {
  "description": null,
  "host_tools": null,

diff --git a/avr-specs/sync-from-upstream.py b/avr-specs/sync-from-upstream.py
@@ -58,7 +58,9 @@
  # needed because we currently rely on avr-libc
  "no-default-libraries": False,
  # 8-bit operations on AVR are atomic
- "max-atomic-width": 8,
+ # LLVM also supports 16-bit atomics by disabling interrupts
+ # see also https://github.com/rust-lang/rust/pull/114495
+ "max-atomic-width": 16,
 }