patch added to solve build failure, see https://gitlab.freedesktop.org/mesa/mesa/-/issues/5320

.SRCINFO

@@ -1,6 +1,6 @@
 pkgbase = mesa-git
 	pkgdesc = an open-source implementation of the OpenGL specification, git version
-	pkgver = 21.2.0_devel.142376.c70f45c7596
+	pkgver = 21.3.0_devel.144688.2587fa1570e
 	pkgrel = 1
 	url = https://www.mesa3d.org
 	arch = x86_64
@@ -60,9 +60,12 @@ pkgbase = mesa-git
 	conflicts = vulkan-swrast
 	source = mesa::git+https://gitlab.freedesktop.org/mesa/mesa.git#branch=main
 	source = LICENSE
+	source = 12715 - use hasParamAttr instead of hasAttribute.patch
 	md5sums = SKIP
 	md5sums = 5c65a0fe315dd347e09b1f2826a1df5a
+	md5sums = 87cc71137f5fa8b686ff4f562dbf65d5
 	sha512sums = SKIP
 	sha512sums = 25da77914dded10c1f432ebcbf29941124138824ceecaf1367b3deedafaecabc082d463abcfa3d15abff59f177491472b505bcb5ba0c4a51bb6b93b4721a23c2
+	sha512sums = 47886f0916dbf68b5cad7cd6aacfc61955d1352bff9431b0958aa17b0280e18d03b3690be872f10156a1d206560b11cf8835446df82f118ffa138acd551e47b8
 
 pkgname = mesa-git

12715 - use hasParamAttr instead of hasAttribute.patch

@@ -0,0 +1,24 @@
+--- a/src/amd/llvm/ac_llvm_helper.cpp
++++ b/src/amd/llvm/ac_llvm_helper.cpp
+@@ -60,7 +60,7 @@
+    llvm::Argument *A = llvm::unwrap<llvm::Argument>(arg);
+    llvm::AttributeList AS = A->getParent()->getAttributes();
+    unsigned ArgNo = A->getArgNo();
+-   return AS.hasAttribute(ArgNo + 1, llvm::Attribute::InReg);
++   return AS.hasParamAttr(ArgNo, llvm::Attribute::InReg);
+ }
+
+
+--- a/src/gallium/frontends/clover/llvm/codegen/common.cpp
++++ b/src/gallium/frontends/clover/llvm/codegen/common.cpp
+@@ -233,8 +233,8 @@ namespace {
+                }
+
+             } else {
+-               const bool needs_sign_ext = f.getAttributes().hasAttribute(
+-                  arg.getArgNo() + 1, ::llvm::Attribute::SExt);
++               const bool needs_sign_ext = f.getAttributes().hasParamAttr(
++                  arg.getArgNo(), ::llvm::Attribute::SExt);
+
+                args.emplace_back(module::argument::scalar, arg_api_size,
+                                  target_size, target_align,

PKGBUILD

@@ -12,7 +12,7 @@
 
 pkgname=mesa-git
 pkgdesc="an open-source implementation of the OpenGL specification, git version"
-pkgver=21.2.0_devel.142376.c70f45c7596
+pkgver=21.3.0_devel.144688.2587fa1570e
 pkgrel=1
 arch=('x86_64')
 makedepends=('git' 'python-mako' 'xorgproto'
@@ -26,11 +26,14 @@ conflicts=('mesa' 'opencl-mesa' 'vulkan-intel' 'vulkan-radeon' 'vulkan-mesa-laye
 url="https://www.mesa3d.org"
 license=('custom')
 source=('mesa::git+https://gitlab.freedesktop.org/mesa/mesa.git#branch=main'
-        'LICENSE')
+        'LICENSE'
+        "12715 - use hasParamAttr instead of hasAttribute.patch")
 md5sums=('SKIP'
-         '5c65a0fe315dd347e09b1f2826a1df5a')
+         '5c65a0fe315dd347e09b1f2826a1df5a'
+         '87cc71137f5fa8b686ff4f562dbf65d5')
 sha512sums=('SKIP'
-            '25da77914dded10c1f432ebcbf29941124138824ceecaf1367b3deedafaecabc082d463abcfa3d15abff59f177491472b505bcb5ba0c4a51bb6b93b4721a23c2')
+            '25da77914dded10c1f432ebcbf29941124138824ceecaf1367b3deedafaecabc082d463abcfa3d15abff59f177491472b505bcb5ba0c4a51bb6b93b4721a23c2'
+            '47886f0916dbf68b5cad7cd6aacfc61955d1352bff9431b0958aa17b0280e18d03b3690be872f10156a1d206560b11cf8835446df82f118ffa138acd551e47b8')
 
 # NINJAFLAGS is an env var used to pass commandline options to ninja
 # NOTE: It's your responbility to validate the value of $NINJAFLAGS. If unsure, don't set it.
@@ -95,8 +98,10 @@ prepare() {
     if [  -d _build ]; then
         rm -rf _build
     fi
+    patch --directory=mesa --forward --strip=1 --input="${srcdir}/12715 - use hasParamAttr instead of hasAttribute.patch"
 }
 
+
 build () {
     meson setup mesa _build \
        -D b_ndebug=true \