backport from Mesa upstream to fix i386 build with llvm 13

gallivm: fix FTBFS on i386 with LLVM >= 13, StackAlignmentOverride is gone
3a2d317b996f57647da23de7876142be4b9b71f3

gallivm: add new wrapper around Module::setOverrideStackAlignment()
c1b4c64a28d9fc093229eab91a3a7fc4cb4fe29a

https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11940

ok sthen@

3 files changed, 17 insertions, 1 deletions

diff --git a/lib/mesa/src/gallium/auxiliary/gallivm/lp_bld_init.c b/lib/mesa/src/gallium/auxiliary/gallivm/lp_bld_init.c
index dd428242c..8694b3923 100644
--- a/lib/mesa/src/gallium/auxiliary/gallivm/lp_bld_init.c
+++ b/lib/mesa/src/gallium/auxiliary/gallivm/lp_bld_init.c
@@ -347,6 +347,10 @@ init_gallivm_state(struct gallivm_state *gallivm, const char *name,
    if (!gallivm->module)
       goto fail;
 
+#if defined(PIPE_ARCH_X86)
+   lp_set_module_stack_alignment_override(gallivm->module, 4);
+#endif
+
    gallivm->builder = LLVMCreateBuilderInContext(gallivm->context);
    if (!gallivm->builder)
       goto fail;
diff --git a/lib/mesa/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp b/lib/mesa/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp
index 4f3e69681..3efa1d911 100644
--- a/lib/mesa/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp
+++ b/lib/mesa/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp
@@ -350,7 +350,7 @@ lp_build_create_jit_compiler_for_module(LLVMExecutionEngineRef *OutJIT,
     * friends for configuring code generation options, like stack alignment.
     */
    TargetOptions options;
-#if defined(PIPE_ARCH_X86)
+#if defined(PIPE_ARCH_X86) && LLVM_VERSION_MAJOR < 13
    options.StackAlignmentOverride = 4;
 #endif
 
@@ -596,3 +596,12 @@ lp_is_function(LLVMValueRef v)
 {
 	return LLVMGetValueKind(v) == LLVMFunctionValueKind;
 }
+
+extern "C" void
+lp_set_module_stack_alignment_override(LLVMModuleRef MRef, unsigned align)
+{
+#if LLVM_VERSION_MAJOR >= 13
+   llvm::Module *M = llvm::unwrap(MRef);
+   M->setOverrideStackAlignment(align);
+#endif
+}
diff --git a/lib/mesa/src/gallium/auxiliary/gallivm/lp_bld_misc.h b/lib/mesa/src/gallium/auxiliary/gallivm/lp_bld_misc.h
index f2a15f19e..fa0ce9016 100644
--- a/lib/mesa/src/gallium/auxiliary/gallivm/lp_bld_misc.h
+++ b/lib/mesa/src/gallium/auxiliary/gallivm/lp_bld_misc.h
@@ -91,6 +91,9 @@ lp_is_function(LLVMValueRef v);
 
 void
 lp_free_objcache(void *objcache);
+
+void
+lp_set_module_stack_alignment_override(LLVMModuleRef M, unsigned align);
 #ifdef __cplusplus
 }
 #endif