radeonsi: add shared memory

Declares the shared memory as a global variable so that
LLVM is aware of it and it does not conflict with passes
like AMDGPUPromoteAlloca.

v2: - Use ctx->i8.
    - Dropped null-check for declare_memory_region.
    - Changed memory region array to single region.

Signed-off-by: Bas Nieuwenhuizen <[email protected]>
Reviewed-by: Marek Olšák <[email protected]>
Reviewed-by: Nicolai Hähnle <[email protected]>
Reviewed-by: Edward O'Callaghan <[email protected]>

2 files changed, 7 insertions, 0 deletions

diff --git a/src/gallium/drivers/radeon/radeon_llvm.h b/src/gallium/drivers/radeon/radeon_llvm.h
index 0a164bba307..3e11b36b1fd 100644
--- a/src/gallium/drivers/radeon/radeon_llvm.h
+++ b/src/gallium/drivers/radeon/radeon_llvm.h
@@ -68,6 +68,9 @@ struct radeon_llvm_context {
 			unsigned index,
 			const struct tgsi_full_declaration *decl);
 
+	void (*declare_memory_region)(struct radeon_llvm_context *,
+			const struct tgsi_full_declaration *decl);
+
 	/** This array contains the input values for the shader.  Typically these
 	  * values will be in the form of a target intrinsic that will inform the
 	  * backend how to load the actual inputs to the shader. 
diff --git a/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c b/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c
index fb883cb585e..08281973b29 100644
--- a/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c
+++ b/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c
@@ -366,6 +366,10 @@ static void emit_declaration(
 		break;
 	}
 
+	case TGSI_FILE_MEMORY:
+		ctx->declare_memory_region(ctx, decl);
+		break;
+
 	default:
 		break;
 	}