[Mesa-dev] [PATCH] radv: setup llvm target data layout

[Dave Airlie]

From: Dave Airlie <airlied at redhat.com>

Ported from radeonsi, pointed out by Tom.

"This prevents LLVM from using sext instructions for local memory
offsets and allows the backend to fold immediate offsets into the
instruction. This also prevents some incorrect code generation for
ptrtoint and inttoptr instructions."

Signed-off-by: Dave Airlie <airlied at redhat.com>
---
 src/amd/common/ac_nir_to_llvm.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/amd/common/ac_nir_to_llvm.c b/src/amd/common/ac_nir_to_llvm.c
index 47091a2..417b34e 100644
--- a/src/amd/common/ac_nir_to_llvm.c
+++ b/src/amd/common/ac_nir_to_llvm.c
@@ -4911,6 +4911,13 @@ LLVMModuleRef ac_translate_nir_to_llvm(LLVMTargetMachineRef tm,
 	memset(shader_info, 0, sizeof(*shader_info));
 
 	LLVMSetTarget(ctx.module, options->supports_spill ? "amdgcn-mesa-mesa3d" : "amdgcn--");
+
+	LLVMTargetDataRef data_layout = LLVMCreateTargetDataLayout(tm);
+	char *data_layout_str = LLVMCopyStringRepOfTargetData(data_layout);
+	LLVMSetDataLayout(ctx.module, data_layout_str);
+	LLVMDisposeTargetData(data_layout);
+	LLVMDisposeMessage(data_layout_str);
+
 	setup_types(&ctx);
 
 	ctx.builder = LLVMCreateBuilderInContext(ctx.context);
-- 
2.9.3