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auxiliary
auxiliary
 
 
avr
avr
 
 
cffi
cffi
 
 
cross-crate-inlining
cross-crate-inlining
 
 
debug-accessibility
debug-accessibility
 
 
dllimports
dllimports
 
 
enum
enum
 
 
float
float
 
 
instrument-coverage
instrument-coverage
 
 
instrument-xray
instrument-xray
 
 
intrinsics
intrinsics
 
 
issues
issues
 
 
lib-optimizations
lib-optimizations
 
 
loongarch-abi
loongarch-abi
 
 
macos
macos
 
 
meta-filecheck
meta-filecheck
 
 
naked-fn
naked-fn
 
 
non-terminate
non-terminate
 
 
patchable-function-entry
patchable-function-entry
 
 
remap_path_prefix
remap_path_prefix
 
 
repr
repr
 
 
riscv-abi
riscv-abi
 
 
sanitizer
sanitizer
 
 
simd-intrinsic
simd-intrinsic
 
 
simd
simd
 
 
src-hash-algorithm
src-hash-algorithm
 
 
unwind-abis
unwind-abis
 
 
README.md
README.md
 
 
aarch64-struct-align-128.rs
aarch64-struct-align-128.rs
 
 
abi-efiapi.rs
abi-efiapi.rs
 
 
abi-main-signature-16bit-c-int.rs
abi-main-signature-16bit-c-int.rs
 
 
abi-main-signature-32bit-c-int.rs
abi-main-signature-32bit-c-int.rs
 
 
abi-repr-ext.rs
abi-repr-ext.rs
 
 
abi-sysv64.rs
abi-sysv64.rs
 
 
abi-x86-interrupt.rs
abi-x86-interrupt.rs
 
 
abi-x86_64_sysv.rs
abi-x86_64_sysv.rs
 
 
addr-of-mutate.rs
addr-of-mutate.rs
 
 
adjustments.rs
adjustments.rs
 
 
align-byval-alignment-mismatch.rs
align-byval-alignment-mismatch.rs
 
 
align-byval-vector.rs
align-byval-vector.rs
 
 
align-byval.rs
align-byval.rs
 
 
align-enum.rs
align-enum.rs
 
 
align-fn.rs
align-fn.rs
 
 
align-offset.rs
align-offset.rs
 
 
align-struct.rs
align-struct.rs
 
 
alloc-optimisation.rs
alloc-optimisation.rs
 
 
array-clone.rs
array-clone.rs
 
 
array-cmp.rs
array-cmp.rs
 
 
array-codegen.rs
array-codegen.rs
 
 
array-equality.rs
array-equality.rs
 
 
array-from_fn.rs
array-from_fn.rs
 
 
array-map.rs
array-map.rs
 
 
array-optimized.rs
array-optimized.rs
 
 
array-repeat.rs
array-repeat.rs
 
 
ascii-char.rs
ascii-char.rs
 
 
asm-arm64ec-clobbers.rs
asm-arm64ec-clobbers.rs
 
 
asm-clobber_abi.rs
asm-clobber_abi.rs
 
 
asm-clobbers.rs
asm-clobbers.rs
 
 
asm-goto.rs
asm-goto.rs
 
 
asm-may_unwind.rs
asm-may_unwind.rs
 
 
asm-maybe-uninit.rs
asm-maybe-uninit.rs
 
 
asm-msp430-clobbers.rs
asm-msp430-clobbers.rs
 
 
asm-multiple-options.rs
asm-multiple-options.rs
 
 
asm-options.rs
asm-options.rs
 
 
asm-powerpc-clobbers.rs
asm-powerpc-clobbers.rs
 
 
asm-s390x-clobbers.rs
asm-s390x-clobbers.rs
 
 
asm-sanitize-llvm.rs
asm-sanitize-llvm.rs
 
 
asm-target-clobbers.rs
asm-target-clobbers.rs
 
 
async-closure-debug.rs
async-closure-debug.rs
 
 
async-fn-debug-awaitee-field.rs
async-fn-debug-awaitee-field.rs
 
 
async-fn-debug-msvc.rs
async-fn-debug-msvc.rs
 
 
async-fn-debug.rs
async-fn-debug.rs
 
 
atomic-operations.rs
atomic-operations.rs
 
 
atomicptr.rs
atomicptr.rs
 
 
autovectorize-f32x4.rs
autovectorize-f32x4.rs
 
 
binary-heap-peek-mut-pop-no-panic.rs
binary-heap-peek-mut-pop-no-panic.rs
 
 
binary-search-index-no-bound-check.rs
binary-search-index-no-bound-check.rs
 
 
bool-cmp.rs
bool-cmp.rs
 
 
box-uninit-bytes.rs
box-uninit-bytes.rs
 
 
bpf-alu32.rs
bpf-alu32.rs
 
 
branch-protection-old-llvm.rs
branch-protection-old-llvm.rs
 
 
branch-protection.rs
branch-protection.rs
 
 
call-llvm-intrinsics.rs
call-llvm-intrinsics.rs
 
 
call-metadata.rs
call-metadata.rs
 
 
cast-optimized.rs
cast-optimized.rs
 
 
cast-target-abi.rs
cast-target-abi.rs
 
 
catch-unwind.rs
catch-unwind.rs
 
 
cdylib-external-inline-fns.rs
cdylib-external-inline-fns.rs
 
 
cf-protection.rs
cf-protection.rs
 
 
cfguard-checks.rs
cfguard-checks.rs
 
 
cfguard-disabled.rs
cfguard-disabled.rs
 
 
cfguard-nochecks.rs
cfguard-nochecks.rs
 
 
cfguard-non-msvc.rs
cfguard-non-msvc.rs
 
 
char-ascii-branchless.rs
char-ascii-branchless.rs
 
 
checked_ilog.rs
checked_ilog.rs
 
 
checked_math.rs
checked_math.rs
 
 
clone-shims.rs
clone-shims.rs
 
 
clone_as_copy.rs
clone_as_copy.rs
 
 
codemodels.rs
codemodels.rs
 
 
coercions.rs
coercions.rs
 
 

README.md

The files here use the LLVM FileCheck framework, documented at https://llvm.org/docs/CommandGuide/FileCheck.html.

One extension worth noting is the use of revisions as custom prefixes for FileCheck. If your codegen test has different behavior based on the chosen target or different compiler flags that you want to exercise, you can use a revisions annotation, like so:

// revisions: aaa bbb
// [bbb] compile-flags: --flags-for-bbb

After specifying those variations, you can write different expected, or explicitly unexpected output by using <prefix>-SAME: and <prefix>-NOT:, like so:

// CHECK: expected code
// aaa-SAME: emitted-only-for-aaa
// aaa-NOT:                        emitted-only-for-bbb
// bbb-NOT:  emitted-only-for-aaa
// bbb-SAME:                       emitted-only-for-bbb