llvmPackages_{18,19}.mlir: fix build with gcc15

- add patch from 2 upstream commits that were not backported to llvm_18
and llvm_19:

https://github.com/llvm/llvm-project/commit/41eb186fbb024898bacc2577fa3b88db0510ba1f
Fixes build failure with gcc15:
```
In file included from /build/mlir-src-18.1.8/mlir/lib/Dialect/Affine/IR/ValueBoundsOpInterfaceImpl.cpp:9:
/build/mlir-src-18.1.8/mlir/include/mlir/Dialect/Affine/IR/ValueBoundsOpInterfaceImpl.h:31:11:
error: 'int64_t' was not declared in this scope
   31 | FailureOr<int64_t> fullyComposeAndComputeConstantDelta(Value value1,
      |           ^~~~~~~
/build/mlir-src-18.1.8/mlir/include/mlir/Dialect/Affine/IR/ValueBoundsOpInterfaceImpl.h:13:1:
note: 'int64_t' is defined in header '<cstdint>'; this is probably
fixable by adding '#include <cstdint>'
   12 | #include "mlir/Support/LogicalResult.h"
  +++ |+#include <cstdint>
   13 |
```

https://github.com/llvm/llvm-project/commit/101109fc5460d5bb9bb597c6ec77f998093a6687
Fixes failure with gcc15:
```
In file included from /build/mlir-src-19.1.7/mlir/lib/Target/SPIRV/Deserialization/Deserialization.cpp:9:
/build/mlir-src-19.1.7/mlir/include/mlir/Target/SPIRV/Deserialization.h:29:51:
error: 'uint32_t' was not declared in this scope
   29 | OwningOpRef<spirv::ModuleOp> deserialize(ArrayRef<uint32_t> binary,
      |                                                   ^~~~~~~~
/build/mlir-src-19.1.7/mlir/include/mlir/Target/SPIRV/Deserialization.h:18:1:
note: 'uint32_t' is defined in header '<cstdint>'; this is probably
fixable by adding '#include <cstdint>'
   17 | #include "mlir/Support/LLVM.h"
  +++ |+#include <cstdint>
   18 |
```

First patch can be applied with `fetchpatch`, but only on llvm_19, because
of changed include line right above.
So use 2 versions of combined patches with 2 commits.

pkgs/development/compilers/llvm/18/mlir/mlir-add-include-cstdint.patch

@@ -0,0 +1,28 @@
+Rebase of 2 upstream commits:
+https://github.com/llvm/llvm-project/commit/41eb186fbb024898bacc2577fa3b88db0510ba1f
+https://github.com/llvm/llvm-project/commit/101109fc5460d5bb9bb597c6ec77f998093a6687
+
+diff --git a/include/mlir/Dialect/Affine/IR/ValueBoundsOpInterfaceImpl.h b/include/mlir/Dialect/Affine/IR/ValueBoundsOpInterfaceImpl.h
+index 451c466fa0c95..642e99d963ef6 100644
+--- a/include/mlir/Dialect/Affine/IR/ValueBoundsOpInterfaceImpl.h
++++ b/include/mlir/Dialect/Affine/IR/ValueBoundsOpInterfaceImpl.h
+@@ -10,6 +10,7 @@
+ #define MLIR_DIALECT_AFFINE_IR_VALUEBOUNDSOPINTERFACEIMPL_H
+ 
+ #include "mlir/Support/LogicalResult.h"
++#include <cstdint>
+ 
+ namespace mlir {
+ class DialectRegistry;
+diff --git a/include/mlir/Target/SPIRV/Deserialization.h b/include/mlir/Target/SPIRV/Deserialization.h
+index e39258beeaac8..a346a7fd1e5f7 100644
+--- a/include/mlir/Target/SPIRV/Deserialization.h
++++ b/include/mlir/Target/SPIRV/Deserialization.h
+@@ -15,6 +15,7 @@
+ 
+ #include "mlir/IR/OwningOpRef.h"
+ #include "mlir/Support/LLVM.h"
++#include <cstdint>
+ 
+ namespace mlir {
+ class MLIRContext;

pkgs/development/compilers/llvm/19/mlir/mlir-add-include-cstdint.patch

@@ -0,0 +1,29 @@
+Rebase of 2 upstream commits:
+https://github.com/llvm/llvm-project/commit/41eb186fbb024898bacc2577fa3b88db0510ba1f
+https://github.com/llvm/llvm-project/commit/101109fc5460d5bb9bb597c6ec77f998093a6687
+
+diff --git a/include/mlir/Dialect/Affine/IR/ValueBoundsOpInterfaceImpl.h b/include/mlir/Dialect/Affine/IR/ValueBoundsOpInterfaceImpl.h
+index 451c466fa0c95..642e99d963ef6 100644
+--- a/include/mlir/Dialect/Affine/IR/ValueBoundsOpInterfaceImpl.h
++++ b/include/mlir/Dialect/Affine/IR/ValueBoundsOpInterfaceImpl.h
+@@ -10,6 +10,7 @@
+ #define MLIR_DIALECT_AFFINE_IR_VALUEBOUNDSOPINTERFACEIMPL_H
+ 
+ #include "mlir/Support/LLVM.h"
++#include <cstdint>
+ 
+ namespace mlir {
+ class DialectRegistry;
+diff --git a/include/mlir/Target/SPIRV/Deserialization.h b/include/mlir/Target/SPIRV/Deserialization.h
+index e39258beeaac8..a346a7fd1e5f7 100644
+--- a/include/mlir/Target/SPIRV/Deserialization.h
++++ b/include/mlir/Target/SPIRV/Deserialization.h
+@@ -15,6 +15,7 @@
+ 
+ #include "mlir/IR/OwningOpRef.h"
+ #include "mlir/Support/LLVM.h"
++#include <cstdint>
+ 
+ namespace mlir {
+ class MLIRContext;
+

pkgs/development/compilers/llvm/common/mlir/default.nix

@@ -12,6 +12,7 @@
   libllvm,
   version,
   devExtraCmakeFlags ? [ ],
+  getVersionFile,
 }:
 
 stdenv.mkDerivation (finalAttrs: {
@@ -38,6 +39,12 @@ stdenv.mkDerivation (finalAttrs: {
 
   patches = [
     ./gnu-install-dirs.patch
+  ]
+  ++ lib.optional (lib.versionOlder release_version "20") [
+    # Fix build with gcc15
+    # https://github.com/llvm/llvm-project/commit/41eb186fbb024898bacc2577fa3b88db0510ba1f
+    # https://github.com/llvm/llvm-project/commit/101109fc5460d5bb9bb597c6ec77f998093a6687
+    (getVersionFile "mlir/mlir-add-include-cstdint.patch")
   ];
 
   nativeBuildInputs = [

pkgs/development/compilers/llvm/common/patches.nix

@@ -116,4 +116,16 @@
       path = ../21;
     }
   ];
+  "mlir/mlir-add-include-cstdint.patch" = [
+    {
+      after = "18";
+      before = "19";
+      path = ../18;
+    }
+    {
+      after = "19";
+      before = "20";
+      path = ../19;
+    }
+  ];
 }