Backport gfx1154 support into ZLUDA's Windows LLVM compiler

Adapt official LLVM 7a0829e41228 to the pinned LLVM 22 parser and ELF structures. Apply and audit the complete source delta before building, export its provenance, and package the source patch. Add 33 offline public PTX compilation checks across all eleven GPU targets without hardware execution. Preserve strict arithmetic and document RX9070XT K/M regressions.

docs/windows-rdna4-port.md

@@ -52,6 +52,22 @@ Results: `test-results/windows-gpu-coverage`; build logs and the compile-only
 matrix report: `build/windows-gpu-coverage`. No physical multi-GPU, APU or
 other-target validation is claimed. K performance remains open.
 
+The final translator gate exposed a separate dependency gap: pinned LLVM 22
+rejects `gfx1154` and aborts (`0xC0000409`) on a public PTX pattern. A minimal
+source backport of official LLVM `7a0829e41228` adds the processor's real
+11.5.4 features, parser and ELF identity. It is exported under
+`patches/zluda-llvm`, applied idempotently by the LLVM builder and included with
+its base/hash in package metadata. LLVM and ZLUDA are rebuilt; all 33 offline
+pattern/F16-reference/WMMA compilations pass across the eleven targets without
+GPU execution. The existing strict gfx12 F16 reference lowering remains intact.
+The rebuilt ZLUDA passes 20/20 RX 9070 XT CTest gates. Its twelve further K
+4K burst/recreation frames are finite and all six async RGB images are exact;
+three sync RGB images also exactly match the previous compiler's captures.
+Four further M 4K frames are finite and match all four previous-compiler RGB
+images exactly. Both require native transformer hits, zero CPU frame copies
+and frame age 0. Results: `k-new-zluda`, `m-new-zluda` and compiler comparison
+logs under `test-results/windows-gpu-coverage`. Other GPUs remain unverified.
+
 **Current milestone: K performance remains open.** The latest unprofiled 4K
 Silent Hill 2 scene capture records 65.250 FPS. Functional K/M and the
 reproducible archive do not close this gate. Prioritize measured K kernel cost
@@ -1219,7 +1235,10 @@ Pinned additional build dependencies:
   rust-std and rust-mingw archives and installs only under `.tools`.
 * ZLUDA LLVM submodule `ff4dc1f7c9e1c64d4d69e40f4ed30c2280a96dfd`,
   `llvm-config` reports `22.0.0git`. AMDGPU/LLVM/LLD are built with LLVM-MinGW
-  `20260922`; no Linux build host or runtime is used.
+  `20260922`; no Linux build host or runtime is used. The Windows builder adds
+  `patches/zluda-llvm/0001-backport-gfx1154.patch`, adapted from official LLVM
+  `7a0829e41228513299c5108685b0bc127463c6a1`. Rebuild and relink ZLUDA when
+  updating; native Clang 24 target support alone does not cover translated PTX.
 * HiGHS submodule `364c83a51e44ba6c27def9c8fc1a49b1daf5ad5c`.
 * The LLVM IR helper producer is stable HIP 7.2/LLVM 21. The final target is
   selected by the translator from HIP `gfx1201`; generic helper generation