Fix SLANG_USE_SYSTEM_SPIRV_HEADERS=TRUE (#7916)
find_package is locally scoped, so like other find_packages we should do
it at the top level
Closes #7643

Fix segfault when using -separate-debug-info with unsupported targets (…
…#7777)
* Initial plan
* Fix segfault when using -separate-debug-info with unsupported targets
Add validation to emit a diagnostic error when -separate-debug-info is used
with targets other than SPIR-V binary. Previously, this would cause a segfault
because the separate debug info logic is only implemented for SPIR-V targets.
Changes:
- Added new diagnostic error (ID 18) for unsupported separate debug info usage
- Added validation in OptionsParser::_parse() to check target compatibility
- Created test cases for HLSL and GLSL targets to verify the fix
- Updated error message to clarify only SPIR-V binary targets are supported
The fix prevents segfaults and provides clear feedback to users about
target limitations for the -separate-debug-info option.
Co-authored-by: csyonghe <2652293+csyonghe@users.noreply.github.com>
* Address feedback: fix segfault properly instead of preventing it
Co-authored-by: csyonghe <2652293+csyonghe@users.noreply.github.com>
---------
Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: csyonghe <2652293+csyonghe@users.noreply.github.com>

Slang v2025.12.1
=== Breaking changes ===
No breaking changes
=== All changes for this release ===
69947de Use fossil for IR serialization (#7619)
3865a65 Language server: sort completion candidate by relevance. (#7626)
7119d9c Catch abort exception from leaking from loadModule (#7627)
b282c88 Make copysign function differentiable (#7585)
b4fc380 Language Server Enhancements (#7604)
551d0c3 Replace SLANG_ALIGN_OF with C++11 alignof (#7523)
ebfb8d0 Fix for mixed block/embedded usage of structs in SPIRV (#7608)
279de50 Remove a test from expected-failure-github for MacOS (#7526)
20afbfe Don't use access::sample for multisample texture in metal (#7601)
141eac9 Enable tests for CUDA (#7593)
7dd89f2 Remove swiftshader (#7600)
05ff885 Fix crash when using wrong type for inout parameter with WGSL target (#7588)
3e1dd65 [HLSL, SPIRV_1_3] Hoist OpSelect returning a composite into `if`/`else` (#7594)
54a5d7f Run full check on merge_queue, but not on push. (#7596)
bee3142 add task shader alias (#7372)
cd28357 Fix spurious vk::binding warnings when attribute is present (#7581)
0aa6733 Don't run full gpu tests on merge queue. (#7587)
35f0036 Fix diagnostics not appearing when semantic tokens are disabled (#7477) (#7532)
7ffb9f5 Fix for emitting ArrayStride decoration for arrays of opaque types (#7568)
415adcf Add copilot environment configuration. (#7586)
c701ec0 Defer immutable buffer loads when emitting spirv. (#7579)
83c72fd Comment SLANG_OVERRIDE options (#7584)
eb7f335 Misc language server improvements. (#7569)
5120c1c extend fiddle to allow custom lua splices in more places (#7559)
b903ae0 update slang-rhi (#7494)
c94ca16 Allow Link time constant array length sizing, warn on unsupported functionality (#7067)

Add arguments for controlling floating point denormal mode (#7461)
* Implement -fp-denorm-mode slangc arg
* Split fp-denorm-mode into 3 args for fp16/32/64
* Remove redundant option categories
* Use emitInst for multiple of the same OpExecutionMode
* Fix formatting
* Remove -denorm any
* Re-add option categories
* emitinst for ftz
* Use enums for type text
* Remove extra categories again
* Add tests for denorm mode
* Move denorm mode to post linking
* format code (#8)
Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com>
* regenerate command line reference (#9)
Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com>
* Clean up tests
* Fix option text
* format code (#10)
Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com>
* Add tests for "any" mode
* Return "any" enum if option not set
* Simplify emission logic
* Add support for generic entrypoints
* Move denorm modes to end of CompilerOptionName enum
* format code (#11)
Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com>
* Move new enum members to before CountOf
* Add not checks to tests, fix generic test, add functionality tests
* Rename denorm to fpDenormal
* Clean up functional test
* Rename denorm test dir
* Fix formatting, regenerate cmdline ref
* Fold simple tests into functional tests, add more dxil checks
* Remove no-op DX tests, make tests more consistent
* Disable VK functionality tests that will fail on the CI configs
* Fix formatting
* Add comments to disabled tests explaining why
---------
Co-authored-by: slangbot <ellieh+slangbot@nvidia.com>
Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com>

Add MLP training examples. (#7550)
* Add MLP training examples.
* Formatting fix.
* Fix.
* Improve documentation on coopvector.
* Improve doc.
* Update doc.
* Fix typo.
* Cleanup shader.
* Cleanup.
* Fix test.
* Fix type check recursion.
* Fix.
* Fix.
* Fix override check.

Move separate-debug-info arg to target options (#7540)
* Move separate-debug-info arg to target options
The separate-debug-info command line option is listed under debugging
options, move this to the target options section which includes other
similar flags like -g and -emit-spirv-directly.
* regenerate command line reference
---------
Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com>

Fix Phi elimination pass sometimes leaving broken insts in release bu…
…ilds (#7499)
* Make phi elimination pass modify branches in-place
* Add test and fix formatting
* Avoid double removal of param insts

=== Breaking changes ===
No breaking changes
=== All changes for this release ===
4747511 Document supported compiler versions in building.md (#7512)
b1fc75f Add default implementation for determinant (#7505)
4b7a899 Fix a small typo in CPU target docs (#7507)
5510278 Update spirv-tools and spirv-headers (#7500)
23dcea8 Enabling optix ci pipeline  (#7311)
5da7301 remove sccache due to the instability (#7484)
e61f7c4 Fix wasm releases (#7313)
9d01a90 Fix cuda_fp16 header issue (#7476)
82418b1 Always emit DepthReplacing execution mode when writing to FragDepth (#7450)
9bcbf59 Update slang-rhi (#7457)
3ed7761 Add support for on-demand AST deserialization (#7482)
97f328a Add merge queue CI trigger. (#7485)
3cbc500 Fix retry logic for unit test (#7471)
777ac6c Fix coopvector neg intrinsic. (#7481)
ef6c21a Use 1-based argument index for DebugLocalVariable (#7438)
1fb60f2 Delete GFX User Guide (#7474)
3822f92 Fix additional VVL violations (#7377)
63ca232 Fix false negative result for CUDA with recent versions (#7409)
8c10030 Fix out of bound buffer access in the preprocessor. (#7475)
4d51779 LanguageServer: Enhance auto completion for override. (#7465)
b9799e6 Update CMake version to 3.26 (#7459)
b6ab113 Fix slangpy not using correct slang backend (#7334)
14d002a AD cleanup for 'break' replacement (#7456)
60a8f1f Fix for missing signedness cast in SwizzleIR (#7448)
a434572 Require `override` keyword for overriding default interface methods. (#7458)
07f79b9 Disable periadic diagnostic update on language-server on CI (#7445)
28d9573 Exposing TU-local entity with modules fix (#7449)
bb03daf Bump the min shader model version for CUDA 12.8+ (#7415)
6e570b5 Skip processing import declarations after errors (#7393)
6a23949 Allow interface methods to have default implementations. (#7439)
e72b332 Print CUDA version on CI servers (#7413)
84148b8 Fix a bug in empty array legalization. (#7444)
1d8f6f8 Fix SLANG_USE_SYSTEM_SPIRV_HEADERS  (#7371)
debdc72 Support SM6.9 with GFX (#7387)
497033d Fix issue that struct with  member is not its Differential type (#7434)
ad6478f Re-enable running slang-rhi-tests (#7360)

Fix SLANG_USE_SYSTEM_SPIRV_HEADERS (#7371)
* Use aliased SPIRV-Headers::SPIRV-Headers to also work with an installed SPIRV-Headers
SPIRV-Headers standalone is only defined when using sources directly.
When consuming an installed SPIRV-Headers via find_package, the full SPIRV-Headers::SPIRV-Headers must be used.
The full syntax is supported by both source and installed builds.
* Fix SLANG_USE_SYSTEM_SPIRV_HEADERS
- Use find_package to bring in SPIRV-Headers cmake targets
- Set SPIRV-Headers_SOURCE_DIR as a workaround when including
  spirv-tools
- Query cmake for SLANG_SPIRV_HEADERS_INCLUDE_DIR location, supporting
  default, SLANG_OVERRIDE_SPIRV_HEADERS_PATH and find_package builds.
- Cleanup unnecessary SPIRV_HEADER_DIR (unconditionally overwritten in
  spirv-tools)

v2025.10.3
=== Breaking changes ===
0d16228 Add command line option for separate debug info (#7178)
=== All changes for this release ===
3fa3825 Allow checking capabilities in specific stages (#7375)
e372020 Fix IR layout of 3-element vectors in cbuffers for -fvk-use-dx-layout (#7282)
954ad3d remove unnecessary use of std::bit_cast (#7384)
405d438 Legalise out parameters for vertex shaders on metal (#6943)
d70da65 Add optix support for coopvec (#7286)
ab6b5f2 Add release workflow targeting glibc2.17 with ubuntu 18 (#7363)
bfae49d Mediate access to ContainerDecl members (#7242)
bfac247 Fix interface types as RHS of is/as operators (#7234)
10a3b87 Remove unnecessary compile definitions (#7355)
[BREAKING] 0d16228 Add command line option for separate debug info (#7178)
649d533 Address issues with GLSL style global in/out vars (#6669) (#6998)
7f04adb Disable Link-Time-Optimization by default (#7345)
2203df7 Disable coopvec while using Agility SDK and until graphics driver supports it (#7357)
8abaec7 Update slang-rhi (#7303)